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Picasolar | Department of Energy
Energy.gov (U.S. Department of Energy (DOE)) Indexed Site
Picasolar Picasolar National Clean Energy Business Plan Competition 2013 16 likes Picasolar University of Arkansas Picasolar, Inc. has developed a patent-pending technology known as the Hydrogen Selective Emitter (HSE) that increases the efficiency of silicon solar cells by up to 15 percent while reducing manufacturing costs. Our technology is a process that preferentially alters the top layer conductivity of a silicon solar cell so as to reduce the total required amount of silver by up to 22 percent while simultaneously boosting efficiencies as high as 15 percent. The HSE is an easy to implement technology; a one-step process that can utilize tap water offering an incredible cost-savings for solar manufacturers. Picasolar is unlocking the energy potential of today's silicon solar cells to further reduce the
Bearing Analytics Purdue University 355 likes Bearing Analytics is a leading-edge equipment monitoring company aimed at pioneering a new era in industrial bearing condition...
Bioadhesive Alliance North Carolina A&T State University 1322 likes Bioadhesive Alliance Inc. is a developer and manufacturer of "PiGrid", bio-based adhesive that is green, low...
SiNode Systems SiNode Systems Northwestern University 31 likes SiNode Systems is a battery materials venture developing silicon-graphene anodes for the next generation of lithium-ion batteries. SiNode anodes offer higher battery capacity and faster charging rates, all while being produced via a low cost solution chemistry-based manufacturing process. Learn More Pyro-E University of California-Berkeley 190 likes Pyro-E, LLC is developing a solid-state device for waste heat harvesting at the distributed energy scale. The device is designed based on the pyroelectric effect and can be used to improve the fuel-use efficiency of 300 million vehicles and generators in the United States. Learn More Inviroment Brigham Young University 300 likes PlasTek(tm) is patent-pending technology created by Inviroment(tm) that
Pyro-E | Department of Energy
Picasolar Picasolar University of Arkansas 16 likes Picasolar wholly owns the hydrogen selective emitter (HSE) technology. HSE can increase the efficiency of solar cells by up to 15 percent and remove up to 33 percent of the silver grid lines in a conventional silicon solar cell. Learn More SiNode Systems Northwestern University 31 likes SiNode Systems is a battery materials venture developing silicon-graphene anodes for the next generation of lithium-ion batteries. SiNode anodes offer higher battery capacity and faster charging rates, all while being produced via a low cost solution chemistry-based manufacturing process. Learn More Inviroment Brigham Young University 300 likes PlasTek(tm) is patent-pending technology created by Inviroment(tm) that facilitates the biodegradation of all types of plastic found in landfills.
Bearing Analytics | Department of Energy
Picasolar Picasolar University of Arkansas 16 likes Picasolar wholly owns the hydrogen selective emitter (HSE) technology. HSE can increase the efficiency of solar cells by up to 15 percent and remove up to 33 percent of the silver grid lines in a conventional silicon solar cell. Learn More SiNode Systems Northwestern University 31 likes SiNode Systems is a battery materials venture developing silicon-graphene anodes for the next generation of lithium-ion batteries. SiNode anodes offer higher battery capacity and faster charging rates, all while being produced via a low cost solution chemistry-based manufacturing process. Learn More Pyro-E University of California-Berkeley 190 likes Pyro-E, LLC is developing a solid-state device for waste heat harvesting at the distributed energy scale. The device is designed based on the
Bioadhesive Alliance | Department of Energy
Picasolar Picasolar University of Arkansas 16 likes Picasolar wholly owns the hydrogen selective emitter (HSE) technology. HSE can increase the efficiency of solar cells by up to 15 percent and remove up to 33 percent of the silver grid lines in a conventional silicon solar cell. Learn More Pyro-E University of California-Berkeley 190 likes Pyro-E, LLC is developing a solid-state device for waste heat harvesting at the distributed energy scale. The device is designed based on the pyroelectric effect and can be used to improve the fuel-use efficiency of 300 million vehicles and generators in the United States. Learn More SiNode Systems Northwestern University 31 likes SiNode Systems is a battery materials venture developing silicon-graphene anodes for the next generation of lithium-ion batteries. SiNode anodes
2013 National Clean Energy Business Plan Competition | Department of Energy
Inviroment | Department of Energy
Pyro-E Pyro-E University of California-Berkeley 190 likes Pyro-E, LLC is developing a solid-state device for waste heat harvesting at the distributed energy scale. The device is designed based on the pyroelectric effect and can be used to improve the fuel-use efficiency of 300 million vehicles and generators in the United States. Learn More SiNode Systems Northwestern University 31 likes SiNode Systems is a battery materials venture developing silicon-graphene anodes for the next generation of lithium-ion batteries. SiNode anodes offer higher battery capacity and faster charging rates, all while being produced via a low cost solution chemistry-based manufacturing process. Learn More Picasolar University of Arkansas 16 likes Picasolar wholly owns the hydrogen selective emitter (HSE) technology. HSE
Bearing Analytics Bearing Analytics Purdue University 355 likes Bearing Analytics is a leading-edge equipment monitoring company aimed at pioneering a new era in industrial bearing condition monitoring. Our objective is to consolidate the needs of customers, environment, and manufacturers to improve asset management and energy efficiency capabilities one bearing at a time. Learn More Bioadhesive Alliance North Carolina A&T State University 1322 likes Bioadhesive Alliance Inc. is a developer and manufacturer of "PiGrid", bio-based adhesive that is green, low cost, and durable and can be utilized as a substitute to petroleum-based asphalt binder. Learn More Picasolar University of Arkansas 16 likes Picasolar wholly owns the hydrogen selective emitter (HSE) technology. HSE
A Wholly Owned Subsidiary of
E-Print Network (OSTI)
This Environmental Report (ER) constitutes one portion of an application being submitted by International Isotopes Fluorine Products (IIFP) to construct and operate a facility that will utilize depleted DUF6 to produce high purity inorganic fluorides, uranium oxides, and anhydrous hydrofluoric acid. The proposed IIFP facility will be located near Hobbs, New Mexico. IIFP has prepared the ER to meet the requirements specified in 10 CFR 51, Subpart A, particularly those requirements set forth in 10 CFR 51.45(b)-(e). The organization of this ER is generally consistent with NUREG-1748, �Environmental Review Guidance for Licensing Actions Associated with NMSS Programs, Final Report.� The Environmental Report for this proposed facility provides information that is specifically required by the NRC to assist it in meeting its obligations under the National Environmental Policy Act (NEPA) of 1969 and the agency�s NEPA-implementing regulations. This ER demonstrates that the environmental protection measures proposed by IIFP are adequate to protect both the environment and the health and safety of the public. This Environmental Report evaluates the potential environmental impacts of the Proposed Action and its reasonable alternatives. This ER also describes the environment potentially affected by IIEF�s proposal,
Revision A
Parabolic-like maps
In this paper we introduce the notion of parabolic-like mapping, which is an object similar to a polynomial-like mapping, but with a parabolic external class, i.e. an external map with a parabolic fixed point. We prove a straightening theorem for parabolic-like maps, which states that any parabolic-like map of degree 2 is hybrid conjugate to a member of the family Per_1(1), and this member is unique (up to holomorphic conjugacy) if the filled Julia set of the parabolic-like map is connected.
Lomonaco, Luciana Luna Anna
omnibus appropriations bill likely
Science Conference Proceedings (OSTI)
The outlook for spending bills is much like recent years, in which the House and Senate could not complete the normal process of each passing appropriations�...
Tissue-like phantoms
DOE Patents (OSTI)
The invention is based, in part, on the discovery that by combining certain components one can generate a tissue-like phantom that mimics any desired tissue, is simple and inexpensive to prepare, and is stable over many weeks or months. In addition, new multi-modal imaging objects (e.g., beads) can be inserted into the phantoms to mimic tissue pathologies, such as cancer, or merely to serve as calibration standards. These objects can be imaged using one, two, or more (e.g., four) different imaging modalities (e.g., x-ray computed tomography (CT), positron emission tomography (PET), single photon emission computed tomography (SPECT), and near-infrared (NIR) fluorescence) simultaneously.
Frangioni, John V. (Wayland, MA); De Grand, Alec M. (Boston, MA)
No Home Like Your Own.
??No Home Like Your Own is a journey through my childhood memories of pre?war Socialist Yugoslavia and the war in Bosnia and Herzegovina that followed� (more)
Aliba�i?, Emir
Widget:FacebookLike | Open Energy Information
Open Energy Info (EERE)
FacebookLike FacebookLike Jump to: navigation, search This widget puts a Facebook "Like" button onto the current page. In most cases, if should only be called via Template:FacebookLike. Parameters Parameter Type Required? Example Description url URL Y http://en.openei.org/ The URL which will be "liked" if the resulting button is clicked. height Integer Y 35 Height of the Like button iframe (in pixels). width Integer Y 100 Width of the Like button iframe (in pixels). Example Output Ext LikeLike UnlikeLike You like this.Sign Up to see what your friends like. ernal resources http://developers.facebook.com/docs/reference/plugins/like Retrieved from "http://en.openei.org/w/index.php?title=Widget:FacebookLike&oldid=305090" Category:
Wholly Owned Offshore Subsidiaries for IT Development: A Program of Research
Information Technology (IT) offshore outsourcing is a non-reversible trend due to its cost implications, and as a result, target of much inquiry in different areas of knowledge. We propose to focus research efforts on a smaller niche within that larger ...
Roberto Evaristo; Jorge L. Nicolas; Rafael Prikladnicki; Jairo Avritchir
Contour Dynamics of Tornado-like Vortices
Contour dynamics (CD) is applied to study the mechanism responsible for the breakup of an isolated tornado-like vortex into multiple vortices, the nonlinear interaction between a tornado and its parent storm, and the impact of tornadoes, which ...
Shian-Jiann Lin
Indirect signatures for axion(-like) particles
Magnetic field dependent transient solar observations are suggestive for axion-photon oscillations with light axion(-like) particle involvement. Novel dark-moon measurements with the SMART X-ray detectors can be conclusive for radiatively decaying massive exotica like the generic solar Kaluza-Klein (KK) axions. Furthermore, the predicted intrinsic strong solar magnetic fields could be the reason of enhanced low energy axion production. Such an axion component could be the as yet unknown origin of the strong quiet Sun X-ray luminosity at energies below ? 1 keV. Solar axion telescopes should lower their threshold, aiming to copy processes that might occur near the solar surface, be it due to spontaneous or magnetically induced radiative decay of axion(-like) particles. This is motivated also by the recent claim of an axion-like particle detection by the laser experiment PVLAS. 2 1
K. Zioutas; K. Dennerl; M. Gr; D. H. H. Hoffmann; J. Huovelin; B. Laki?; S. Orl; A. Ortiz; Th. Papaevangelou; Y. Semertzidis
Phenomenology of heavy vector-like leptons
We study the impact that a heavy generation of vector-like leptons can have on the value of the electric dipole moment of the electron, and the rates for the flavor violating processes mu --> e gamma and mu --> 3e. The smallness of the charged lepton masses suggests that at least some of the Yukawa coupling constants of the vector-like leptons to the ordinary leptons or amongst themselves are small, but even with such small couplings experiments trying to detect these quantities are sensitive to extra generation lepton masses up to about 100 TeV.
Koji Ishiwata; Mark B. Wise
Solar-like oscillations in cluster stars
We present a brief overview of the history of attempts to obtain a clear detection of solar-like oscillations in cluster stars, and discuss the results on the first clear detection, which was made by the Kepler Asteroseismic Science Consortium (KASC) Working Group 2.
Stello, D; Bedding, T R; Brogaard, K; Bruntt, H; Chaplin, W J; Christensen-Dalsgaard, J; Demarque, P; Elsworth, Y P; Garc�a, R A; Gilliland, R L; Hekker, S; Huber, D; Karoff, C; Kjeldsen, H; Lebreton, Y; Mathur, S; Meibom, S; Zakowicz, J Molenda-\\; Noels, A; Roxburgh, I W; Aguirre, V S; Sterken, C; Szab�, R
Decameter Type III-Like Bursts
Starting from 1960s Type III-like bursts (Type III bursts with high drift rates) in a wide frequency range from 300 to 950MHz have been observed. These new bursts observed at certain frequency being compared to the usual Type III bursts at the same frequency show similar behaviour but feature frequency drift 2-6 times higher than the normal bursts. In this paper we report the first observations of Type III-like bursts in decameter range, carried out during summer campaigns 2002 - 2004 at UTR-2 radio telescope. The circular polarization of the bursts was measured by the radio telescope URAN-2 in 2004. The observed bursts are analyzed and compared with usual Type III bursts in the decameter range. From the analysis of over 1100 Type III-like bursts, their main parameters have been found. Characteristic feature of the observed bursts is similar to Type III-like bursts at other frequencies, i.e. measured drift rates (5-10 MHz/s) of this bursts are few times larger than that for usual Type III bursts, and their durations (1-2 s) are few times smaller than that for usual Type III bursts in this frequency band.
V. N. Melnik; A. A. Konovalenko; B. P. Rutkevych; H. O. Rucker; V. V. Dorovskyy; E. P. Abranin; A. Lecacheux; A. I. Brazhenko; A. A. Stanislavskyy
Geometric View on Photon-like Objects
This book aims to summarize in a consistent way the authors' results in attempting to build spatially finite and time-stable models of photon-like objects through extending Maxwell vacuum equations to local energy-momentum exchange relations and making use of modern differential geometry. In particular, we interpret dynamically Frobenius integrability theory of distributions on manifolds through an appropriate $\\varphi$-extension along $p$-vector fields of the classical Lie derivative, and give interaction interpretation of the nonintegrability of subdistributions of an integrable distribution recognizing physically these subdistributions as time-stable subsystems of the field object considered and formally presented by the integrable distribution. The space-time propagation of our photon-like object is, of course, along appropriate symmetry of the representing distribution.
Stoil Donev; Maria Tashkova
Donev, Stoil
On Superspace Chern-Simons-like Terms
We search for superspace Chern-Simons-like higher-derivative terms in the low energy effective actions of supersymmetric theories in four dimensions. Superspace Chern-Simons-like terms are those gauge-invariant terms which cannot be written solely in terms of field strength superfields and covariant derivatives, but in which a gauge potential superfield appears explicitly. We find one class of such four-derivative terms with N=2 supersymmetry which, though locally on the Coulomb branch can be written solely in terms of field strengths, globally cannot be. These terms are classified by certain Dolbeault cohomology classes on the moduli space. We include a discussion of other examples of terms in the effective action involving global obstructions on the Coulomb branch.
Philip C. Argyres; Adel M. Awad; Gregory A. Braun; F. Paul Esposito
Schrodinger-like (Dilaton-)Gravity
We investigate possibilities for the Schrodinger-like gravity with the dynamical critical exponent z=2, where the action only contains the first-order time derivative. The Horava gravity always admits such a relevant deformation because the full (d+1) dimensional diffeomorphism of the Einstein gravity is replaced by the foliation preserving diffeomorphism. The dynamics is locally trivial or topological for the pure gravity case, but we can construct a dynamical field theory with z=2 dispersion relation by introducing a dilaton degree of freedom. Our model gives birth to a new model for quantum (dilaton-)gravity which may be applied to a membrane quantization.
Nakayama, Yu
Iterated maps for clarinet-like systems
The dynamical equations of clarinet-like systems are known to be reducible to a non-linear iterated map within reasonable approximations. This leads to time oscillations that are represented by square signals, analogous to the Raman regime for string instruments. In this article, we study in more detail the properties of the corresponding non-linear iterations, with emphasis on the geometrical constructions that can be used to classify the various solutions (for instance with or without reed beating) as well as on the periodicity windows that occur within the chaotic region. In particular, we find a regime where period tripling occurs and examine the conditions for intermittency. We also show that, while the direct observation of the iteration function does not reveal much on the oscillation regime of the instrument, the graph of the high order iterates directly gives visible information on the oscillation regime (characterization of the number of period doubligs, chaotic behaviour, etc.).
Pierre-Andr� Taillard; Jean Kergomard; Franck Lalo�
Apparatus for insulating windows and the like
Apparatus for insulating window openings through walls and the like includes a thermal shutter, a rail for mounting the shutter adjacent to the window opening and a coupling for connecting the shutter to the rail. The thermal shutter includes an insulated panel adhered to frame members which surround the periphery of the panel. The frame members include a hard portion for providing the frame and a soft portion for providing a seal with that portion of the wall adjacent to the periphery of the opening. The coupling means is preferably integral with the attachment rail. According to a preferred embodiment, the coupling means includes a continuous hinge of reduced thickness. The thermal shutter can be permanently attached, hinged, bi-folded, or sliding with respect to the window and wall. A distribution method is to market the apparatus in kit'' form. 11 figs.
Mitchell, R.A.
Apparatus for insulating window openings through walls and the like includes a thermal shutter, a rail for mounting the shutter adjacent to the window opening and a coupling for connecting the shutter to the rail. The thermal shutter includes an insulated panel adhered to frame members which surround the periphery of the panel. The frame members include a hard portion for providing the frame and a soft portion for providing a seal with that portion of the wall adjacent to the periphery of the opening. The coupling means is preferably integral with the attachment rail. According to a preferred embodiment, the coupling means includes a continuous hinge of reduced thickness. The thermal shutter can be permanently attached, hinged, bi-folded, or sliding with respect to the window and wall. A distribution method is to market the apparatus in "kit" form.
Mitchell, Robert A. (R.D. #1, Box 462-A, Voorheesville, NY 12186)
Heuristic viewpoint concerning the Magnetic-like Energy
The symmetrized formulism of gravitational fields in a manner similar to Dirac's symmetrization of electromagnetism predicts the existence of dual energy called the magnetic-like energy, which can present the magnetic-like curvature as a consequence. We intend to show that the magnetic-like curvature has connection to either the magnetic-like energy or the vortices of ordinary energy. We investigate the propagation of electromagnetic radiations on both the ordinary and magnetic-like curvatures, which symmetrize the formulism of this literature based on the electric-like and magnetic-like energies.
Danehkar, Ashkbiz
Topological Polarization in Graphene-like Systems
In this article we investigate the possibility of generating piezoelectric orbital polarization in graphene-like systems which are deformed periodically. We start with discrete two-level models which depend on control parameters; in this setting, time-dependent model hamiltonians are described by loops in parameter space. Then, the gap structure at a given Fermi energy generates a non-trivial topology on parameter space which then leads to possibly non-trivial polarizations. More precisely, we show the polarization, as given by the *King-Smith--Vanderbilt formula*, depends only on the homotopy class of the loop; hence, a necessary condition for non-trivial piezo effects is that the fundamental group of the gapped parameter space must not be trivial. The use of the framework of non-commutative geometry implies our results extend to systems with weak disorder. We then apply this analysis to the uniaxial strain model for graphene which includes nearest-neighbor hopping and a stagger potential, and show that it supports non-trivial piezo effects; this is in agreement with recent physics literature.
Giuseppe De Nittis; Max Lein
Remote creation of hybrid entanglement between particle-like and wave-like optical qubits
The wave-particle duality of light has led to two different encodings for optical quantum information processing. Several approaches have emerged based either on particle-like discrete-variable states, e.g. finite-dimensional quantum systems, or on wave-like continuous-variable states, e.g. infinite-dimensional systems. Here, we demonstrate the first measurement-induced generation of entanglement between optical qubits of these different types, located at distant places and connected by a lossy channel. Such hybrid entanglement, which is a key resource for a variety of recently proposed schemes, including quantum cryptography and computing, enables to convert information from one Hilbert space to the other via teleportation and therefore connect remote quantum processors based upon different encodings. Beyond its fundamental significance for the exploration of entanglement and its possible instantiations, our optical circuit opens the promises for heterogeneous network implementations, where discrete and continuous-variable operations and techniques can be efficiently combined.
Olivier Morin; Kun Huang; Jianli Liu; Hanna Le Jeannic; Claude Fabre; Julien Laurat
FAQ 18-What does a cylinder storage yard look like?
NLE Websites -- All DOE Office Websites (Extended Search)
cylinder storage yard look like? What does a cylinder storage yard look like? Pictures of depleted UF6 cylinder storage yards are shown below. Storage yards are large outdoor areas...
SLAC National Accelerator Laboratory - Diamond-like Coating Improves...
News Feature Archive Diamond-like Coating Improves Electron Microscope Images By Mike Ross November 26, 2012 Coating the surface of a material with a single layer of diamond-like...
Coal likely to remain most prevalent fuel for electricity ...
U.S. Energy Information Administration (EIA)
Coal is currently the dominant fuel for electricity generation and is likely to remain so, even if additional environmental control regulations ...
Incremental-like Bundle Methods with Application to Energy Planning
Nov 18, 2008 ... Incremental-like Bundle Methods with Application to Energy Planning. Gr�gory Emiel (gemiel ***at*** impa.br) Claudia Sagastiz�bal (sagastiz�...
Skin-Like Prosthetic Polymer Surfaces - Energy Innovation Portal
ORNL scientists combined superhydrophobic polymer inventions with carbon nanotubes to create a self-cleaning skin-like surface material with the ...
NETL: News Release - State Regulatory Framework Will Most Likely...
February 1, 2011 State Regulatory Framework Will Most Likely Result in Robust CO2 Pipeline System, New Study Says Analysis Funded by NETL May Help Speed Commercialization of...
Control of Wire Rod Physical Properties Like Ultimate Tensile ...
Sep 1, 2001 ... Control of Wire Rod Physical Properties Like Ultimate Tensile Strength and Elongation by Close Monitoring of Rolling Energy Input
Perception modeling for human-like artificial sensor systems
In this article we present an approach to the design of human-like artificial systems. It uses a perception model to describe how sensory information is processed for a particular task and to correlate human and artificial perception. Since human-like ... Keywords: Active perception, Artificial hand, Artificial perceptual systems, Dexterous manipulation, Electronic tongue, Human-based sensors, Passive perception
Linn Robertsson; Boyko Iliev; Rainer Palm; Peter Wide
User evaluation of god-like interaction techniques
God-like interaction is a metaphor for improved communication of situational and navigational information between outdoor users, equipped with mobile augmented reality systems, and indoor users, equipped with tabletop projector display systems. This ... Keywords: 3D reconstruction, god-like interaction metaphor, outdoor augmented reality, remote communication, user study
Aaron Stafford; Wayne Piekarski
Like Energy Savers? Tell Your Friends! | Department of Energy
Like Energy Savers? Tell Your Friends! Like Energy Savers? Tell Your Friends! Like Energy Savers? Tell Your Friends! May 25, 2010 - 7:30am Addthis Allison Casey Senior Communicator, NREL One of the best things about the latest social tools on the Web is that it's so easy to share information that we find useful, interesting, or entertaining. My friends and the people I follow in social media generally have interests that are similar to mine, so I like it when they share links that to content that interests them. If you find something here on the blog or on the Energy Savers Web site that you find useful or interesting, we hope you'll share it with others. There are a few ways you can do that: On the blog, click the links at the bottom of each entry (or RSS feed) to e-mail the article or share in places like Twitter, Digg, and
How Do You Like the Monthly Recaps? | Department of Energy
Like the Monthly Recaps? Like the Monthly Recaps? How Do You Like the Monthly Recaps? September 2, 2011 - 8:17am Addthis No doubt you've noticed them by now, but this year we started a regular column on the Energy Savers blog where we show you what's new on the website, what we've talked about, our weekly questions, and a few posts from the archives. We'd like to know: Do you find the "This Month on Energy Savers" column useful? Why or why not? Is there anything you'd like to see in these that we're not doing now? Let us know in the comments below. Thank you for your feedback! Each week, you have the chance to share your thoughts on a question about energy efficiency or renewable energy for consumers. E-mail your responses to the Energy Saver team at email@example.com.
Which Energy Resources Would You Like Translated to Spanish? | Department
Which Energy Resources Would You Like Translated to Spanish? Which Energy Resources Would You Like Translated to Spanish? Which Energy Resources Would You Like Translated to Spanish? October 14, 2010 - 7:30am Addthis On Tuesday, Shannon told you about some of the EERE, Energy Savers, and federal government resources that are available in Spanish. We know that many other resources would be useful to Spanish speakers, but we want to know which are the top priorities. So tell us: Which energy resources would you like translated to Spanish? Each Thursday, you have the chance to share your thoughts on a question about energy efficiency or renewable energy for consumers. E-mail your responses to the Energy Saver team at firstname.lastname@example.com. Addthis Related Articles Which Energy Resources Would You Like Translated to Spanish?
Transfer and excitation processes studied in H-like S and Li-like and H-like F colliding with H/sub 2/
DOE Green Energy (OSTI)
We have studied transfer and simultaneous excitation by three different experimental techniques. Coincidences between two K x rays were measured for S/sup 15 +/, coincidences between one K x ray and the charge exchanged projectile for Li-like F and projectile Auger electrons for H-like F in each case colliding with H/sub 2/. For all three collision systems, the measured cross sections are dominated by Resonant Transfer and Excitation (RTE). Also, for the F projectiles, strong contributions from Two Electron Transfer and Excitation (2eTE) were found. 9 refs., 3 figs.
Schulz, M.; Datz, S.; Dittner, P.F.; Giese, J.P.; Krause, H.F.; Miller, P.D.; Schoene, H.; Swenson, J.K.; Vane, C.R.; Schuch, R.; Justiniano, E.; Benhenni, M.; Shafroth, S.M.; Mokler, P.H.; Reusch, S.
Soft X-ray laser using pumping of 3P and 4P levels of He-like and H-like ions
X-ray laser method and apparatus for producing coherent radiation at, for example, energies of at least 40 eV, using Be-like Cr, N-like Ni, He-like Na, B-like Cr, Be-like Mn or similar multiply ionized species to pump appropriate high energy transitions in He-like or H-like N, O, F, C or rare gases, with associated laser transition gains of 4-50 cm.sup.-1.
Hagelstein, Peter L. (Livermore, CA)
Soft x-ray laser using pumping of 3p and 4p levels of He-like and H-like ions
X-ray laser method and apparatus for producing coherent radiation at, for example, energies of at least 40 eV, using Be-like Cr, N-like Ni, He-like Na, B-like Cr, Be-like Mn or similar multiply ionized species to pump appropriate high energy transitions in He-like or H-like N, O, F, C or rare gases, with associated laser transition gains of 4 to 50 cm/sup -1/.
Hagelstein, P.L.
The Structure and Dynamics of Tornado-Like Vortices
The structure and dynamics of axisymmetric tornado-like vortices are explored with a numerical model of axisymmetric incompressible flow based on recently developed numerical methods. The model is first shown to compare favorably with previous ...
David S. Nolan; Brian F. Farrell
Life Cycles of Hurricane-Like Vorticity Rings
The asymmetric dynamics of potential vorticity mixing in the hurricane inner core are further advanced by examining the end states that result from the unforced evolution of hurricane-like vorticity rings in a nondivergent barotropic model. The ...
Eric A. Hendricks; Wayne H. Schubert; Richard K. Taft; Huiqun Wang; James P. Kossin
Barish, F. D. 1974, in Solar Wind Three, ed. C. T. Russell (in AIP Conf. Proc. 471, Solar Wind Nine, ed. S. R. Habbal (SHEET�LIKE STRUCTURES IN THE SOLAR WIND G. Li Space Science
Li, Gang
Measurements of Axial Pressures in Tornado-like Vortices
The results of a series of measurements of centerline pressure deficit in tornado-like vortices are described. These measurements were undertaken for the purpose of determining 1) how the magnitude of the central pressure deficit in a columnar ...
Christopher R. Church; John T. Snow
Molecular Mimicry: Plastic, Steel Line Up Like Kin
| 2007 | 2006 | 2005 2004 | 2003 | 2002 | 2001 2000 Subscribe to APS News rss feed Molecular Mimicry: Plastic, Steel Line Up Like Kin OCTOBER 20, 2010 Bookmark and Share Tasty...
Enhanced MJO-like Variability at High SST
The authors report a significant increase in Madden�Julian oscillation (MJO)�like variability in a superparameterized version of the NCAR Community Atmosphere Model run with high sea surface temperatures (SSTs). A series of aquaplanet simulations ...
Nathan P. Arnold; Zhiming Kuang; Eli Tziperman
Computing Enables New Insights into Generating Power Like the...
powers stars like our Sun, the world could have an inexhaustible energy source. In theory, scientists could produce a steady stream of fusion energy on Earth by heating up two...
Upcoming Science Bowl Championship is a Competition like No Other |
Upcoming Science Bowl Championship is a Competition like No Other Upcoming Science Bowl Championship is a Competition like No Other Upcoming Science Bowl Championship is a Competition like No Other April 23, 2013 - 6:01pm Addthis The Final Match at the U.S Department of Energy National Science Bowl in Washington, DC on April 30, 2012. | Photograph by Dennis Brack, U.S. Department of Energy, Office of Science The Final Match at the U.S Department of Energy National Science Bowl in Washington, DC on April 30, 2012. | Photograph by Dennis Brack, U.S. Department of Energy, Office of Science Charles Rousseaux Charles Rousseaux Senior Writer, Office of Science How can I participate? Learn more at the National Science Bowl homepage: science.energy.gov/nsb/ Imagine an event on the scale of March Madness . . . but multiplied by two.
Capacitively coupled RF diamond-like-carbon reactor
A process of coating a non-conductive fiber with diamond-like carbon, including passing a non-conductive fiber between a pair of parallel metal grids within a reaction chamber, introducing a hydrocarbon gas into the reaction chamber, forming a plasma within the reaction chamber for a sufficient period of time whereby diamond-like carbon is formed upon the non-conductive fiber, is provided together with a reactor chamber for deposition of diamond-like carbon upon a non-conductive fiber, including a vacuum chamber, a cathode assembly including a pair of electrically isolated opposingly parallel metal grids spaced apart at a distance of less than about 1 centimeter, an anode, a means of introducing a hydrocarbon gas into said vacuum chamber, and a means of generating a plasma within said vacuum chamber.
Devlin, David James (Los Alamos, NM); Coates, Don Mayo (Santa Fe, NM); Archuleta, Thomas Arthur (Espanola, NM); Barbero, Robert Steven (Santa Cruz, NM)
Satellite spectra for helium-like titanium. Part II
K/sup ..cap alpha../ x-ray spectra of helium-like titanium, Ti XXI, from Tokamak Fusion Test Reactor (TFTR) plasmas have been observed with a high resolution crystal spectrometer and have been used as a diagnostic of central plasma parameters. The data allow detailed comparison with recent theoretical predictions for the Ti XXI helium-like lines and the associated satellite spectrum in the wavelength range from 2.6000 to 2.6400 A. Improved values for the excitation rate coefficients of the Ti XXI resonance line, the intercombination lines and the forbidden line, and new theoretical results on the wavelengths and transition probabilities for beryllium-like satellites due to transitions of the type 1s/sup 2/ 2lnl' - 1s2p2l'' nl'' with n = 2-4 have been calculated.
Bitter, M.; Hill, K.W.; Zarnstorff, M.; von Goeler, S.; Hulse, R.; Johnson, L.C.; Sauthoff, N.R.; Sesnic, S.; Young, K.M.; Tavernier, M.
Why Onion-Like Carbons Make High-Energy Supercapacitors
Why Onion-Like Why Onion-Like Carbons Make High-Energy Supercapacitors Why Onion-Like Carbons Make High-Energy Supercapacitors Simulations explain experimental results for electrical storage devices June 1, 2012 JiangCummingsCoverLarge.gif Capacitance and geometry effects revealed by molecular dynamics simulations. The OLC and the ionic liquid that were the basis of the simulation are shown in the lower left. (Guang Feng, De-en Jiang, Peter T. Cummings, © ACS Publications) The two most important electrical storage technologies are batteries and capacitors. Batteries can store a lot of energy, but have slow charge and discharge rates. Capacitors generally store less energy but have very fast (nearly instant) charge and discharge rates, and last longer than rechargeable batteries. Developing technologies that combine the optimal
Search for Earth-like planets includes LANL star analysis
Search for earth-like planets Search for earth-like planets Search for Earth-like planets includes LANL star analysis The mission will not only be able to search for planets around other stars, but also yield new insights into the parent stars themselves. March 6, 2009 Los Alamos National Laboratory sits on top of a once-remote mesa in northern New Mexico with the Jemez mountains as a backdrop to research and innovation covering multi-disciplines from bioscience, sustainable energy sources, to plasma physics and new materials. Los Alamos National Laboratory sits on top of a once-remote mesa in northern New Mexico with the Jemez mountains as a backdrop to research and innovation covering multi-disciplines from bioscience, sustainable energy sources, to plasma physics and new materials.
Goos-Hanchen like Shifts in Graphene Double Barriers
We study the Goos-Hanchen like shifts for Dirac fermions in graphene scattered by double barrier structures. After obtaining the solution for the energy spectrum, we use the boundary conditions to explicitly determine the Goos-Hanchen like shifts and the associated transmission probability. We analyze these two quantities at resonances by studying their {main} characteristics as a function of the energy and electrostatic potential parameters. To check the validity of our computations we recover previous results obtained for a single barrier under appropriate limits.
Ahmed Jellal; Ilham Redouani; Youness Zahidi; Hocine Bahlouli
Spectral Fingerprints of Earth-like Planets Around FGK Stars
We present model atmospheres for an Earth-like planet orbiting the entire grid of main sequence FGK stars with effective temperatures ranging from T[subscript eff]=4250?K to T[subscript eff]=7000?K in 250?K intervals. We ...
Rugheimer, Sarah
The Generation and Evolution of Mushroom-like Vortices
Numerical simulations have been performed to understand the generation and evolution of mushroom-like patterns observed in remote sensing images of the ocean surface. A two-layer, shallow-water model is employed using a periodic channel on an f-...
Richard P. Mied; Gloria J. Lindemann; James C. McWilliams
Backoff algorithms performance in burst-like traffic
In the present paper several backoff algorithms are considered to analysis their behavior in burst-like traffic of smart metering network: YITRAN, Binary Exponential and Polynomial backoff algorithms. The comparison was performed by means of transmission ... Keywords: Markov chains, backoff algorithms, smart grid
Ievgenii Tsokalo; Yamnenko Yulia; Stanislav Mudriievskyi
Alignment of Hurricane-like Vortices on f and ? Planes
A nonlinear, two-layer, vortex-tracking semispectral model (i.e., Fourier transformed in azimuth only) is used to study the evolution of dry, but otherwise hurricane-like, initially tilted vortices in quiescent surroundings on f and ? planes. The ...
Robert W. Jones; Hugh E. Willoughby; Michael T. Montgomery
Evidence for an anomalous like-sign dimuon charge asymmetry
SciTech Connect
We measure the charge asymmetry A of like-sign dimuon events in 6.1 fb{sup -1} of p{bar p} collisions recorded with the DO detector at a center of mass energy sqrt s = 1.96 TeV at the Fermilab Tevatron Collider.
Abazov, Victor Mukhamedovich; /Dubna, JINR; Abbott, Braden Keim; /Oklahoma U.; Abolins, Maris A.; /Michigan State U.; Acharya, Bannanje Sripath; /Tata Inst.; Adams, Mark Raymond; /Illinois U., Chicago; Adams, Todd; /Florida State U.; Aguilo, Ernest; /York U., Canada; Alexeev, Guennadi D.; /Dubna, JINR; Alkhazov, Georgiy D.; /St. Petersburg, INP; Alton, Andrew K.; /Michigan U. /Augustana Coll., Sioux Falls; Alverson, George O.; /Northeastern U. /Rio de Janeiro, CBPF
Fusion modeling in plasma physics: Vlasov-like systems
The methods developed by authors are applied to some reductions of BBGKY hierarchy, namely, various examples of Vlasov-like systems which are important both for fusion modeling and for particular physical problems related to plasma/beam physics. We mostly concentrate on phenomena of localization and pattern formation.
Antonina N. Fedorova; Michael G. Zeitlin
Three alternatives to measure the human-likeness of a handshake model in a turing-like test
In the Turing test, a computer model is deemed to think intelligently if it can generate answers indistinguishable from those of a human. We proposed a Turing-like handshake test for testing motor aspects of machine intelligence. The test is administered ...
Ilana Nisky; Guy Avraham; Amir Karniel
Soft x-ray laser using pumping of 3P and 4P levels of He-like and H-like ions
X-ray laser method and apparatus for producing coherent radiation at, for example, energies of 40 to 189 eV, using Be-like Cr, N-like Ni, He-like Na, B-like Cr, Be-like Mn or similar multiply ionized species to pump appropriate high energy transitions in He-like or H-like rare gases or N, O, F, or C gases, with associated laser transition gains of 20 to 50 cm/sup -1/.
Hagelstein, P.
X-ray laser method and apparatus are disclosed for producing coherent radiation at, for example, energies of at least 40 eV, using Be-like Cr, N-like Ni, He-like Na, B-like Cr, Be-like Mn or similar multiply ionized species to pump appropriate high energy transitions in He-like or H-like N, O, F, C or rare gases, with associated laser transition gains of 4-50 cm[sup [minus]1]. 8 figs.
JGI - Why Sequence a Rhodocyclus-like PAO?
a Rhodocyclus-like PAO? a Rhodocyclus-like PAO? Shotgun sequencing of a simple acid-mine-drainage biofilm community has recently demonstrated that, for one archaeal species population at least, individual genomes are recombinant mosaics (i.e., combinations of segments of genomes) of closely related strains. This suggests that, as in sexual organisms and contrary to current opinion, genetic exchange may be the cohesive force holding microbial species together. How, then, might microbial genomes diverge to define separate species? Since the frequency of homologous recombination decreases exponentially with genome divergence, microbial species may be naturally defined by their ability to recombine, solving a fundamental issue in biology. However, genomic mosaicism is an isolated observation in an extreme habitat that needs to be confirmed with
Polarization mesurements of gamma ray bursts and axion like particles
A polarized gamma ray emission spread over a sufficiently wide energy band from a strongly magnetized astrophysical object like gamma ray bursts (GRBs) offers an opportunity to test the hypothesis of axion like particles (ALPs). Based on evidences of polarized gamma ray emission detected in several gamma ray bursts we estimated the level of ALPs induced dichroism, which could take place in the magnetized fireball environment of a GRB. This allows to estimate the sensitivity of polarization measurements of GRBs to the ALP-photon coupling. This sensitivity $\\gag\\le 2.2\\cdot 10^{-11} {\\rm GeV^{-1}}$ calculated for the ALP mass $m_a=10^{-3}~{\\rm eV}$ and MeV energy spread of gamma ray emission is competitive with the sensitivity of CAST and becomes even stronger for lower ALPs masses.
Andre Rubbia; Alexander Sakharov
Aspects of metric-like higher-spin geometry
We consider the higher-derivative equations obtained setting to zero the divergence of the higher-spin curvatures in metric-like form, showing their equivalence to the second-order equations emerging from the tensionless limit of open string field theory, propagating reducible spectra of particles with different spins. This result can be viewed as complementary to the possibility of setting to zero a single trace of the higher-spin field strengths, yielding an equation known to imply Fronsdal's equation in the compensator form. We review the general context and results obtained in the investigation of metric-like higher-spin geometry, the structure of the corresponding non-local actions, together with their links to more conventional, local forms including a recently proposed one for higher-spin theories with transverse gauge invariance.
Francia, D. [Centro Studi e Ricerche E. Fermi, piazza del Viminale 1, I-00184 Roma, Italy and Scuola Normale Superiore and INFN, Piazza dei Cavalieri 7, I-56126 Pisa (Italy)
Photon-Axion-Like Particle Coupling Constant and Cosmological Observations
We estimated the photon-pseudoscalar particle mixing constant from the effect of cosmological alignment and cosmological rotation of polarization plane of distant QSOs. This effect is explained in terms of birefringent phenomenon due to photon-pseudoscalar (axion-like) particle mixing in a cosmic magnetic field. On the contrary, one can estimate the strength of the cosmic magnetic field using the constraints on the photon-axion-like particle coupling constant from the CAST experiment and from SNe Ia dimming effect. In a result, the lower limit on the intergalactic ($z\\approx 1\\div 2$) magnetic field appears at the level of about $4\\times 10^{-10}\\div 10^{-11}$ G.
M. Yu. Piotrovich; Yu. N. Gnedin; T. M. Natsvlishvili
We measure the charge asymmetry A of like-sign dimuon events in 6.1 fb{sup -1} of pp collisions recorded with the D0 detector at a center-of-mass energy {radical}(s)=1.96 TeV at the Fermilab Tevatron collider. From A, we extract the like-sign dimuon charge asymmetry in semileptonic b-hadron decays: A{sub sl}{sup b}=-0.00957{+-}0.00251 (stat){+-}0.00146 (syst). This result differs by 3.2 standard deviations from the standard model prediction A{sub sl}{sup b}(SM)=(-2.3{sub -0.6}{sup +0.5})x10{sup -4} and provides first evidence of anomalous CP violation in the mixing of neutral B mesons.
Abazov, V. M.; Alexeev, G. D.; Golovanov, G.; Kharzheev, Y. N.; Malyshev, V. L.; Tokmenin, V. V.; Vertogradov, L. S.; Yatsunenko, Y. A. [Joint Institute for Nuclear Research, Dubna (Russian Federation); Abbott, B.; Gutierrez, P.; Hossain, S.; Severini, H.; Skubic, P.; Strauss, M. [University of Oklahoma, Norman, Oklahoma 73019 (United States); Abolins, M.; Benitez, J. A.; Brock, R.; Edmunds, D.; Fisher, W.; Hall, I. [Michigan State University, East Lansing, Michigan 48824 (United States)
Process of cleaning oil spills and the like
A process of cleaning spills of toxic or hazardous materials such as oil, antifreeze, gasoline, and the like from bodies of water, garage floors, roadways and the like, comprising spraying unbonded shredded fiberglass blowing wool composition particles onto the spill, absorbing the spill into the shredded fiberglass blowing wool composition particles, and removing the soaked shredded fiberglass blowing wool composition particles and the spill absorbed therein. An absorbent composition for absorbing spills of toxic or hazardous materials such as oil, antifreeze, gasoline, and like, comprising shredded fiberglass blowing wool particles, and means for absorbing the spill and for stiffening the co-position so that the composition fights against being compressed so that less of the absorbed spill escapes from the composition when it is being removed from the spill, said means including cork particles dispersed in with the fiberglass blowing wool particles. An absorbent sock for absorbing or containing a spill of toxic or hazardous materials such as oil, antifreeze, gasoline, and the like, comprising a hollow tube, said tube being permeable to the toxic or hazardous materials and being made of nylon or polypropylene, and unbonded, shredded fiberglass blowing wool composition particles enclosed in the tube. Apparatus for controlling an oil slick on the surface of water, comprising a craft for traversing the slick, a supply of fiberglass blowing wool composition particles stored on the craft in position for being dispersed, shredding means on the craft for shredding the fiberglass blowing wool particles to form unbonded, shredded fiberglass blowing wool particles, and dispensing means on the craft for dispensing the unbonded, shredded fiberglass blowing wool particles onto the slick.
Breisford, J.A.
Single-qubit tests of Bell-like inequalities
This paper discusses some tests of Bell-like inequalities not requiring entangled states. The proposed tests are based on consecutive measurements on a single qubit. Available hidden-variable models for a single qubit [see, e.g., J. S. Bell, Rev. Mod. Phys. 38, 447 (1966)] reproduce the predictions of quantum mechanics and hence violate the Bell-like inequalities addressed in this paper. It is shown how this fact is connected with the state 'collapse' and with its random nature. Thus, it becomes possible to test truly realistic and deterministic hidden-variable models. In this way, it can be shown that a hidden-variable model should entail at least one of the following features: (i) nonlocality, (ii) contextuality, or (iii) discontinuous measurement-dependent probability functions. The last two features are put to the test with the experiments proposed in this paper. A hidden-variable model that is noncontextual and deterministic would be at variance with some predictions of quantum mechanics. Furthermore, the proposed tests are more likely to be loophole-free, as compared to former ones.
Zela, F. de [Departamento de Ciencias, Seccion Fisica Pontificia, Universidad Catolica del Peru, Apartado 1761, Lima (Peru)
Differential rotation in solar-like stars from global simulations
To explore the physics of large-scale flows in solar-like stars, we perform 3D anelastic simulations of rotating convection for global models with stratification resembling the solar interior. The numerical method is based on an implicit large-eddy simulation approach designed to capture effects from non-resolved small scales. We obtain two regimes of differential rotation, with equatorial zonal flows accelerated either in the direction of rotation (solar-like) or in the opposite direction (anti-solar). While the models with the solar-like differential rotation tend to produce multiple cells of meridional circulation, the models with anti-solar differential rotation result in only one or two meridional cells. Our simulations indicate that the rotation and large-scale flow patterns critically depend on the ratio between buoyancy and Coriolis forces. By including a subadiabatic layer at the bottom of the domain, corresponding to the stratification of a radiative zone, we reproduce a layer of strong radial shear...
Guerrero, G; Kosovichev, A G; Mansour, N N
Asteroseismology of Sun-like Stars - A Proposal
In the past decade, helioseismology has revolutionized our understanding of the interior structure of the Sun. In the next decade, asteroseismology will place this knowledge into context, by providing structural information for dozens of pulsating stars across the H-R diagram. Solar-like oscillations have already been detected from the ground in a few stars, and several current and planned satellite missions will soon unleash a flood of stellar pulsation data. Deriving reliable seismological constraints from these observations will require a significant improvement to our current analysis methods. We are adapting a computational method, based on a parallel genetic algorithm, to help interpret forthcoming observations of Sun-like stars. This approach was originally developed for white dwarfs and ultimately led to several interesting tests of fundamental physics, including a key astrophysical nuclear reaction rate and the theory of stellar crystallization. The impact of this method on the analysis of pulsating white dwarfs suggests that seismological modeling of Sun-like stars will also benefit from this approach.
T. S. Metcalfe; T. M. Brown; J. Christensen-Dalsgaard
Plasma deposited diamond-like carbon films for large neutralarrays
To understand how large systems of neurons communicate, we need to develop methods for growing patterned networks of large numbers of neurons. We have found that diamond-like carbon thin films formed by energetic deposition from a filtered vacuum arc carbon plasma can serve as ''neuron friendly'' substrates for the growth of large neural arrays. Lithographic masks can be used to form patterns of diamond-like carbon, and regions of selective neuronal attachment can form patterned neural arrays. In the work described here, we used glass microscope slides as substrates on which diamond-like carbon was deposited. PC-12 rat neurons were then cultured on the treated substrates and cell growth monitored. Neuron growth showed excellent contrast, with prolific growth on the treated surfaces and very low growth on the untreated surfaces. Here we describe the vacuum arc plasma deposition technique employed, and summarize results demonstrating that the approach can be used to form large patterns of neurons.
Brown, I.G.; Blakely, E.A.; Bjornstad, K.A.; Galvin, J.E.; Monteiro, O.R.; Sangyuenyongpipat, S.
Fish Bulletin No. 97. A Descriptive Study of Certain Tuna-like Fishes
97 A Descriptive Study of Certain Tuna-like Fishes By H. C.of a number of species of tuna-like fishes and an evaluationof the tunas and the tuna-like fishes has long been a
Godsil, H C
Glass-like thermal transport in symmetry-broken clathrates.
We present the quantitative interpretation for the glass-like behavior of thermal conductivities {kappa}(T) for type-I clathrate compounds involving off-centered guest ions. It is shown that the dipole-dipole interaction generated in cage/guest-ion systems is crucial to reproduce the characteristics of thermal conductivities for these symmetry-broken clathrates. The above scenario also explains well the difference of {kappa}(T) between the p-type and the n-type {beta}-BGS found recently by K. Suekuni et al.
Kanashita, E.; Nakayama, T.; Toyota Phys. Chem. Res. Inst.
Striped instability of a holographic Fermi-like liquid
We consider a holographic description of a system of strongly-coupled fermions in 2+1 dimensions based on a D7-brane probe in the background of D3-branes. The black hole embedding represents a Fermi-like liquid. We study the excitations of the Fermi liquid system. Above a critical density which depends on the temperature, the system becomes unstable towards an inhomogeneous modulated phase which is similar to a charge density and spin wave state. The essence of this instability can be effectively described by a Maxwell-axion theory with a background electric field. We also consider the fate of zero sound at non-zero temperature.
Oren Bergman; Niko Jokela; Gilad Lifschytz; Matthew Lippert
Microeconomics of the ideal gas like market models
We develop a framework based on microeconomic theory from which the ideal gas like market models can be addressed. A kinetic exchange model based on that framework is proposed and its distributional features have been studied by considering its moments. Next, we derive the moments of the CC model (Eur. Phys. J. B 17 (2000) 167) as well. Some precise solutions are obtained which conform with the solutions obtained earlier. Finally, an output market is introduced with global price determination in the model with some necessary modifications.
Chakrabarti, Anindya S
Method and apparatus for making diamond-like carbon films
Ion-assisted plasma enhanced deposition of diamond-like carbon (DLC) films on the surface of photovoltaic solar cells is accomplished with a method and apparatus for controlling ion energy. The quality of DLC layers is fine-tuned by a properly biased system of special electrodes and by exact control of the feed gas mixture compositions. Uniform (with degree of non-uniformity of optical parameters less than 5%) large area (more than 110 cm.sup.2) DLC films with optical parameters varied within the given range and with stability against harmful effects of the environment are achieved.
Pern, Fu-Jann (Golden, CO); Touryan, Kenell J. (Indian Hills, CO); Panosyan, Zhozef Retevos (Yerevan, AM); Gippius, Aleksey Alekseyevich (Moscow, RU)
R Parity in Standard--like Superstring Models
We investigate the R symmetries of standard--like superstring models. At the level of the cubic superpotential there are three global $U(1)$ R symmetries. These are broken explicitly by $N>3$ terms in the superpotential and spontaneously by scalar VEVs necessary to preserve supersymmetry at $M_P$. A $Z_2$ discrete symmetry remains but is equivalent to fermion number modulo 2. These models possess an effective R parity which arises from the interplay between the gauged $U(1)_{B-L}$ and $U(1)_{r_{j+3}}$.
Edi Halyo
RECOMBINATION RATE COEFFICIENTS OF Be-LIKE Si
Recombination of Be-like Si{sup 10+} over the 0-43 eV electron-ion energy range is measured at the CRYRING electron cooler. In addition to radiative and dielectronic recombination, the recombination spectrum also shows strong contributions from trielectronic recombination. Below 100 meV, several very strong resonances associated with a spin-flip of the excited electron dominate the spectrum and also dominate the recombination in the photoionized plasma. The resonant plasma rate coefficients corrected for the experimental field ionization are in good agreement with calculated results by Gu and with AUTOSTRUCTURE calculations. All other calculations significantly underestimate the plasma rate coefficients at low temperatures.
Orban, I.; Boehm, S.; Schuch, R. [Department of Physics, Stockholm University, 10691 Stockholm (Sweden); Loch, S. D. [Department of Physics, Auburn University, Auburn, AL 36849 (United States)
We present a measurement of the like-sign dimuon asymmetry in semileptonic b-hadron decays, performed using 6.1 fb{sup -1} of p{bar p} collisions recorded with the D0 detector at a center-of-mass energy {radical}s = 1.96 TeV at the Fermilab Tevatron collider. This measured value is A{sub sl}{sup b} = [-0.957 {+-} 0.251 (stat) {+-} 0.146 (syst)] %, which disagrees with the Standard Model prediction at a statistical level of 3.2 {sigma}, and provides the first evidence of anomalous CP violation in the mixing of neutral B mesons.
Williams, M.R.J.; /Lancaster U.
A Skyrme-like model with an exact BPS bound
We propose a new Skyrme-like model with fields taking values on the sphere S^3 or, equivalently, on the group SU(2). The action of the model contains a quadratic kinetic term plus a quartic term which is the same as that of the Skyrme-Faddeev model. The novelty of the model is that it possess a first order Bogomolny type equation whose solutions automatically satisfy the second order Euler-Lagrange equations. It also possesses a lower bound on the static energy which is saturated by the Bogomolny solutions. Such Bogomolny equation is equivalent to the so-called force free equation used in plasma and solar Physics, and which possesses large classes of solutions. An old result due to Chandrasekhar prevents the existence of finite energy solutions for the force free equation on the entire tridimensional space R^3. We construct new exact finite energy solutions to the Bogomolny equations for the case where the space is the three-sphere S^3, using toroidal like coordinates.
L. A. Ferreira; Wojtek J. Zakrzewski
Analysing solar-like oscillations with an automatic pipeline
Kepler mission will provide a huge amount of asteroseismic data during the next few years, among which hundreds of solar-like stars will be targeted. The amount of stars and their observation length represent a step forward in the comprehension of the stellar evolution that has already been initiated by CoRoT and MOST missions. Up to now, the slow cadence of observed targets allowed an individual and personalized analysis of each star. During the survey phase of Kepler, this will be impossible. This is the reason why, within the AsteroFLAG team, we have been developing automatic pipelines for the Kepler solar-like oscillation stars. Our code starts by finding the frequency-range where p-mode power is present and, after fitting the background, it looks for the mode amplitudes as well as the central frequency of the p-mode hump. A good estimation of the large separation can thus be inferred in this region. If the signal to noise is high enough, the code obtains the characteristics of the p modes by doing a glob...
Mathur, S; Regulo, C; Ballot, J; Salabert, D; Chaplin, W J
Star-Like Micelles with Star-Like Interactions: A quantitative Evaluation of Structure Factor and Phase Diagram
PEP-PEO block copolymer micelles offer the possibility to investigate phase behaviour and interactions of star polymers (ultra-soft colloids). A star-like architecture is achieved by an extremely asymmetric block ratio (1:20). Micellar functionality f can be smoothly varied by changing solvent composition (interfacial tension). Structure factors obtained by SANS can be quantitatively described in terms of an effective potential developed for star polymers. The experimental phase diagram reproduces to a high level of accuracy the predicted liquid/solid transition. Whereas for intermediate f a bcc phase is observed, for high f the formation of a fcc phase is preempted by glass formation.
M. Laurati; J. Stellbrink; R. Lund; L. Willner; D. Richter; E. Zaccarelli
Likely social impacts of proposed national-level policy initiatives
The results are described of an investigation of likely social effects of enacting nine proposed national-level policy initiatives to accelerate development and use of solar energy. This study is part of the Technology Assessment of Solar Energy Systems (TASE) project supported by the US Department of Energy. The report presents general social impact information about the variety of ways in which the American people could be affected by enactment of these initiatives. It identifies the effects of each initiative on individuals, groups, organizations, communities, and society as a whole. In addition, it provides a framework for organizing a myriad of impact information into a set of conceptually exclusive impact categories. It illustrates that social impacts means effects on people as individuals, groups, organizations, and communities as well as on the infrastructure of society. Finally, it demonstrates the importance of specifying an audience of impact with a case example from the residential rental market.
Piernot, C.A.; Rothweiler, M.A.; Levine, A.; Crews, R.
Nonlinear Connections and Description of Photon-like Objects
This paper aims to present a general idea for description of spatially finite physical objects with a consistent nontrivial translational-rotational dynamical structure and evolution as a whole, making use of the mathematical concepts and structures connected with the Frobenius integrability/nonintegrability theorems given in terms of distributions on manifolds with corresponding curvature defined by the Nijenhuis operator. The idea is based on consideration of {\\it nonintegrable} subdistributions of some appropriate completely integrable distribution (differential system) on a manifold and then to make use of the corresponding curvatures as generators of measures of interaction, i.e. of energy-momentum exchange among the physical subsystems mathematically represented by the nonintegrable subdistributions. The concept of photon-like object is introduced and description of such objects in these terms is given.
Self-cleaning skin-like prosthetic polymer surfaces
An external covering and method of making an external covering for hiding the internal endoskeleton of a mechanical (e.g., prosthetic) device that exhibits skin-like qualities is provided. The external covering generally comprises an internal bulk layer in contact with the endoskeleton of the prosthetic device and an external skin layer disposed about the internal bulk layer. The external skin layer is comprised of a polymer composite with carbon nanotubes embedded therein. The outer surface of the skin layer has multiple cone-shaped projections that provide the external skin layer with superhydrophobicity. The carbon nanotubes are preferably vertically aligned between the inner surface and outer surface of the external skin layer in order to provide the skin layer with the ability to transmit heat. Superhydrophobic powders may optionally be used as part of the polymer composite or applied as a coating to the surface of the skin layer to enhance superhydrophobicity.
Simpson, John T. (Clinton, TN); Ivanov, Ilia N. (Knoxville, TN); Shibata, Jason (Manhattan Beach, CA)
Random bipartite entanglement from W and W-like states
We describe a protocol for distilling maximally entangled bipartite states between random pairs of parties (``random entanglement'') from those sharing a tripartite W state, and show that this may be done at a higher rate than distillation of bipartite entanglement between specified pairs of parties (``specified entanglement''). Specifically, the optimal distillation rate for specified entanglement for the W has been previously shown to be the asymptotic entanglement of assistance of 0.92 EPR pairs per W, while our protocol can distill 1 EPR pair per W between random pairs of parties, which we conjecture to be optimal. We further extend this to a more general class of W-like states and show by increasing the number of parties in the protocol that there exist states with fixed lower-bounded distillable random entanglement for arbitrarily small specified entanglement.
Fortescue, B; Fortescue, Ben; Lo, Hoi-Kwong
Searches for New Vector Like Quarks: Higgs Channels
New vector-like quarks can mix sizably with first generation Standard Model quarks without conflicting with current experimental constraints. Searches for such new quarks have been performed in pair production and electroweak single production channels with subsequent decays into electroweak gauge bosons. To fully explore the underlying structure of the theory the channels with heavy quark decays into Higgs bosons are crucial and in this article we consider for the first time the LHC reach for such channels. The two main production mechanisms involve single production of new quarks through the fusion of a vector boson and the Higgs and single production in association with a Higgs boson. We show that both channels have promising reach at the LHC and that they complement the current direct searches involving decays into electroweak gauge bosons.
Anupama Atre; Mikael Chala; Jose Santiago
Atre, Anupama; Santiago, Jose
Valence-shell photoionization of chlorine-like Ar$^{+}$ ions
Absolute cross-section measurements for valence-shell photoionization of Ar$^{+}$ ions are reported for photon energies ranging from 27.4 eV to 60.0 eV. The data, taken by merging beams of ions and synchrotron radiation at a photon energy resolution of 10 meV, indicate that the primary ion beam was a statistically weighted mixture of the $^2P^o_{3/2}$ ground state and the $^2P^o_{1/2}$ metastable state of Ar$^{+}$. Photoionization of this C$\\ell$-like ion is characterized by multiple Rydberg series of autoionizing resonances superimposed on a direct photoionization continuum. Observed resonance lineshapes indicate interference between indirect and direct photoionization channels. Resonance features are spectroscopically assigned and their energies and quantum defects are tabulated. The measurements are satisfactorily reproduced by theoretical calculations based on an intermediate coupling semi-relativistic Breit-Pauli approximation.
Covington, A M; Covington, I R; Hinojosa, G; Shirley, C A; �lvarez, I; Cisneros, C; Dominguez-Lopez, I; Sant'Anna, M M; Schlachter, A S; Ballance, C P; McLaughlin, B M
KamLAND-Experiment and Soliton-Like Nuclear Georeactor
We give an alternative description of the new data produced in the KamLAND experiment, assuming the existence of a natural nuclear reactor on the boundary of the liquid and solid phases of the Earth's core. Analyzing the uncertainty of antineutrino spectrum of georeactor origin, we show that the theoretical (which takes into account the soliton-like nuclear georeactor with power about 20 TW) reactor antineutrino spectrum describes with good accuracy the new experimental KamLAND-data. At the same time the parameters of mixing calculated within the framework of georeactor hypothesis are substantially closer to the data of solar flux SNO-experiment then the parameters of mixing obtained in KamLAND-experiment.
V. D. Rusov; D. A. Litvinov; S. Ch. Mavrodiev; E. P. Linnik; V. N. Vaschenko; T. N. Zelentsova; V. A. Tarasov
Cornell researchers take step in deciphering what proteins look like
Ealick Research Group Ealick Research Group Cornell researchers take step in deciphering what proteins look like through discovery of new family member important in making DNA Nov. 3, 2004 ITHACA, N.Y. -- Cornell University researchers, who are trying to understand how proteins evolve and function by looking at their structural features, have uncovered the crystal structure of a protein involved in making the building blocks of DNA correctly. The protein is AIRs kinase, and to the researchers' surprise, its shape is similar to other members of the riboside kinase family, proteins that are important in making DNA and RNA, the molecules that make up genes. As a result, the research group now has nine members of the riboside kinase family that are thought to have evolved from a common protein ancestor.
Amplitudes for space-like separations and causality
This paper explores whether quantum field theory allows the events of emission and absorption of a single particle to be separated by a space-like interval without violating Lorentz symmetries and causality. Although the answer is indeed affirmative, traditionally such effects have been considered negligible. We show that for sufficiently light mass eigenstates such processes can become significant over macroscopic length scales. A critical review of the historical literature reveals various shortcomings of the standard methods; specifically, one finds that they are restricted to states for which the expectation value of momentum vanishes. Furthermore, the results obtained here correct Feynman's analysis of this subject. A formalism is thus developed that allows the description of states with non-zero momentum, which is then applied to the OPERA and ICARUS neutrino-speed experiments. For OPERA we choose a mass in the nano electron-volt range and find that although our formalism predicts a non-zero detection probability for an early arrival time of 60 ns, the predicted event distribution is maximal on the light-cone. Consequently, our prediction does not reproduce the peak at 60 ns reported by the OPERA collaboration. Turning to the ICARUS experiment, we note that while the collaboration reported an average time of flight that is consistent with the speed of light, the event data with its associated uncertainties nevertheless indicates that some of the detection events are separated from their corresponding emission events by a space-like interval. For a micro electron-volt mass range, this is in agreement with the here reported formalism. We thus raise the possibility of employing high-precision neutrino-speed experiments to determine the absolute masses of neutrino mass eigenstates.
S. P. Horvath; D. Schritt; D. V. Ahluwalia
Silicon Isotopic Fractionation of CAI-like Vacuum Evaporation Residues
Calcium-, aluminum-rich inclusions (CAIs) are often enriched in the heavy isotopes of magnesium and silicon relative to bulk solar system materials. It is likely that these isotopic enrichments resulted from evaporative mass loss of magnesium and silicon from early solar system condensates while they were molten during one or more high-temperature reheating events. Quantitative interpretation of these enrichments requires laboratory determinations of the evaporation kinetics and associated isotopic fractionation effects for these elements. The experimental data for the kinetics of evaporation of magnesium and silicon and the evaporative isotopic fractionation of magnesium is reasonably complete for Type B CAI liquids (Richter et al., 2002, 2007a). However, the isotopic fractionation factor for silicon evaporating from such liquids has not been as extensively studied. Here we report new ion microprobe silicon isotopic measurements of residual glass from partial evaporation of Type B CAI liquids into vacuum. The silicon isotopic fractionation is reported as a kinetic fractionation factor, {alpha}{sub Si}, corresponding to the ratio of the silicon isotopic composition of the evaporation flux to that of the residual silicate liquid. For CAI-like melts, we find that {alpha}{sub Si} = 0.98985 {+-} 0.00044 (2{sigma}) for {sup 29}Si/{sup 28}Si with no resolvable variation with temperature over the temperature range of the experiments, 1600-1900 C. This value is different from what has been reported for evaporation of liquid Mg{sub 2}SiO{sub 4} (Davis et al., 1990) and of a melt with CI chondritic proportions of the major elements (Wang et al., 2001). There appears to be some compositional control on {alpha}{sub Si}, whereas no compositional effects have been reported for {alpha}{sub Mg}. We use the values of {alpha}Si and {alpha}Mg, to calculate the chemical compositions of the unevaporated precursors of a number of isotopically fractionated CAIs from CV chondrites whose chemical compositions and magnesium and silicon isotopic compositions have been previously measured.
Knight, K; Kita, N; Mendybaev, R; Richter, F; Davis, A; Valley, J
Wavelet Analysis on Detecting Pulse-Like Earthquakes
A quantitative approach for identifying pulse-like ground motions is proposed herein. It is based on the use of the wavelet transform which has the peculiarity to detect sudden jumps in time histories by separating the contributions of different levels of frequency. Moreover, it has the advantage of low computational cost. Three different wavelet-based signal processing procedures are considered here in order to detect large pulses in near-fault ground motions. The first one is based on the direct decomposition of velocity time histories in frequency level and has been exploited elsewhere in the scientific literature. The other two are introduced here and take into account energy and power spectra. It is shown that wavelet analysis of the energy allows one to put in evidence even pulses that can be hardly recognized in the analysis of velocity time-histories. The proposed procedure permits also to distinguish the various energy contributions in different frequency ranges. By analyzing the wavelet coefficients, in fact, it is possible to verify if the mechanical energy release rate associated with a certain earthquake is due to a few severe events or to a series of 'small' events. It is also possible to evidence the frequency contents of a specific pulse (let say the one with highest amount of energy and corresponding power), isolating its analysis from the rest of the ground motion.
Bosi, Anna; Mariano, Paolo Maria [DICeA, Univesrity of Florence, via Santa Marta 3, I-50139 Firenze (Italy); Mollaioli, Fabrizio [Dipartimento di Ingegneria Strutturale e Geotecnica, Universita di Roma 'La Sapienza' Via Gramsci 53, 00197 Roma (Italy)
A Quantum-like Approach to the Stock Market
Modern approaches to stock pricing in quantitative finance are typically founded on the 'Black-Scholes model' and the underlying 'random walk hypothesis'. Empirical data indicate that this hypothesis works well in stable situations but, in abrupt transitions such as during an economical crisis, the random walk model fails and alternative descriptions are needed. For this reason, several proposals have been recently forwarded which are based on the formalism of quantum mechanics. In this paper we apply the 'SCoP formalism', elaborated to provide an operational foundation of quantum mechanics, to the stock market. We argue that a stock market is an intrinsically contextual system where agents' decisions globally influence the market system and stocks prices, determining a nonclassical behavior. More specifically, we maintain that a given stock does not generally have a definite value, e.g., a price, but its value is actualized as a consequence of the contextual interactions in the trading process. This contextual influence is responsible of the non-Kolmogorovian quantum-like behavior of the market at a statistical level. Then, we propose a 'sphere model' within our 'hidden measurement formalism' that describes a buying/selling process of a stock and shows that it is intuitively reasonable to assume that the stock has not a definite price until it is traded. This result is relevant in our opinion since it provides a theoretical support to the use of quantum models in finance.
Diederik Aerts; Bart D'Hooghe; Sandro Sozzo
Evolution of quantum-like modeling in decision making processes
The application of the mathematical formalism of quantum mechanics to model behavioral patterns in social science and economics is a novel and constantly emerging field. The aim of the so called 'quantum like' models is to model the decision making processes in a macroscopic setting, capturing the particular 'context' in which the decisions are taken. Several subsequent empirical findings proved that when making a decision people tend to violate the axioms of expected utility theory and Savage's Sure Thing principle, thus violating the law of total probability. A quantum probability formula was devised to describe more accurately the decision making processes. A next step in the development of QL-modeling in decision making was the application of Schroedinger equation to describe the evolution of people's mental states. A shortcoming of Schroedinger equation is its inability to capture dynamics of an open system; the brain of the decision maker can be regarded as such, actively interacting with the external environment. Recently the master equation, by which quantum physics describes the process of decoherence as the result of interaction of the mental state with the environmental 'bath', was introduced for modeling the human decision making. The external environment and memory can be referred to as a complex 'context' influencing the final decision outcomes. The master equation can be considered as a pioneering and promising apparatus for modeling the dynamics of decision making in different contexts.
Khrennikova, Polina [School of Management, University of Leicester, University Road Leicester LE1 7RH (United Kingdom)
Quantum dissipative effects in graphene-like mirrors
We study quantum dissipative effects due to the accelerated motion of a single, imperfect, zero-width mirror. It is assumed that the microscopic degrees of freedom on the mirror are confined to it, like in plasma or graphene sheets. Therefore, the mirror is described by a vacuum polarization tensor $\\Pi_{\\alpha\\beta}$ concentrated on a time-dependent surface. Under certain assumptions about the microscopic model for the mirror, we obtain a rather general expression for the Euclidean effective action, a functional of the time-dependent mirror's position, in terms of two invariants that characterize the tensor $\\Pi_{\\alpha\\beta}$. The final result can be written in terms of the TE and TM reflection coefficients of the mirror, with qualitatively different contributions coming from them. We apply that general expression to derive the imaginary part of the `in-out' effective action, which measures dissipative effects induced by the mirror's motion, in different models, in particular for an accelerated graphene sheet.
C. D. Fosco; F. C. Lombardo; F. D. Mazzitelli; M. L. Remaggi
Analysis of Star Formation in Galaxy-like Objects
Using cosmological hydrodynamical simulations, we investigate the effects of hierarchical aggregation on the triggering of star formation in galactic-like objects. We include a simple star formation model to transform the cold gas in dense regions into stars. Simulations with different parameters have been performed in order to quantify the dependence of the results on the parameters. We then resort to stellar population synthesis models to trace the color evolution of each object with red-shift and in relation to their merger histories. We find that, in a hierarchical clustering scenario, the process of assembling of the structure is one natural mechanism that may trigger star formation. The resulting star formation rate history for each individual galactic object is composed of a continuous one ($\\leq 3 \\rm{M_{\\odot}/yr}$) and a series of star bursts. We find that even the accretion of a small satellite can be correlated with a stellar burst. Massive mergers are found to be more efficient at transforming gas into stars
Patricia B. Tissera
Atmospheric Plasma Deposition of Diamond-like Carbon Coatings
DLC coatings in a low-pressure environment. For example, ion beam processes are widely utilized since the ion bombardment is thought to promote denser sp3-bonded carbon networks. Other processes, such as sputtering, are better suited for coating large parts [29,30,44]. However, the deposition of DLC in a vacuum system has several disadvantages, including high equipment cost and restrictions on the size and shape of material that may be treated. The deposition of DLC at atmospheric pressure has been demonstrated by several researchers. Izake, et al [53] and Novikov and Dymont [54] have demonstrated an electrochemical process that is carried out with organic compounds such as methanol and acetylene dissolved in ammonia. This process requires that the substrates be immersed in the liquid [53-54]. The atmospheric pressure deposition of DLC was also demonstrated by Kulik, et al. utilizing a plasma torch. However, this process requires operating temperatures in excess of 800 oC [55]. In this report, we investigate the deposition of diamond-like carbon films using a low temperature, atmospheric pressure plasma-enhanced chemical vapor deposition (PECVD) process. The films were characterized by solid-state carbon-13 nuclear magnetic resonance (13C NMR) and found to have a ratio of sp2 to sp3 carbon of 43 to 57%. The films were also tested for adhesion, coefficient of friction, and dielectric strength.
Ladwig, Angela
Axisymmetrically Tropical Cyclone-like Vortices with Secondary Circulations
The secondary circulation of the tropical cyclone (TC) is related to its formation and intensification, thus becomes very important in the studies. The analytical solutions have both the primary and secondary circulation in a three-dimensionally nonhydrostatic and adiabatic model. We prove that there are three intrinsic radiuses for the axisymmetrically ideal incompressible flow. The first one is the radius of maximum primary circular velocity $r_m$. The second one is radius of the primary kernel $r_k>r_m$, across which the vorticity of the primary circulation changes sign and the vertical velocity changes direction. The last one is the radius of the maximum primary vorticity $r_d$, at which the vertical flow of the secondary circulation approaches its maximum, and across which the radius velocity changes sign. The first TC-like vortex solution has universal inflow or outflow. The relations between the intrinsic length scales are $r_k=\\sqrt{2}r_m$ and $r_d=2r_m$. The second one is a multi-planar solution, per...
Sun, Liang
The technology referred to as Cavity Like Completions (CLC) offers a new technique to complete wells in friable and unconsolidated sands. A successfully designed CLC provides significant increases in well PI (performance index) at lower costs than alternative completion techniques. CLC technology is being developed and documented by a partnership of major oil and gas companies through a GPRI (Global Petroleum Research Institute) joint venture. Through the DOE-funded PUMP program, the experiences of the members of the joint venture will be described for other oil and gas producing companies. To date six examples of CLC completions have been investigated by the JV. The project was performed to introduce a new type of completion (or recompletion) technique to the industry that, in many cases, offers a more cost effective method to produce oil and gas from friable reservoirs. The project's scope of work included: (1) Further develop theory, laboratory and field data into a unified model to predict performance of cavity completion; (2) Perform at least one well test for cavity completion (well provided by one of the sponsor companies); (3) Provide summary of geo-mechanical models for PI increase; and (4) Develop guidelines to evaluate success of potential cavity completion. The project tracks the experiences of a joint industry consortium (GPRI No. 17) over a three year period and compiles results of the activities of this group.
Ian Palmer; John McLennan
Atrial natriuretic polypeptide-like material in rat lung
Atrial natriuretic polypeptide-like immunoreactive material (ANP-IR) was found in rat lung by radioimmunoassay, with the concentration ranging from 0.6-1.2 pmol/g of tissue in each lobe. PAP-immunohistochemical study demonstrated that specific staining of granules for ..cap alpha..-human ANP are mainly located in the muscular layer of the pulmonary vein. Fractionation of lung extract by gel filtration and reserve phase HPLC revealed the presence of multiple forms of ANP-IR, which possibly possessed molecular structure partially different from rat ANP, atriopeptin I and III. Intravenous injection of lung extract induced potent diuresis and natriuresis in rats. These responses could be abolished when the lung extract was preincubated with antiserum for ..cap alpha..-human ANP. Specific binding sites for /sup 125/I-labeled rat ANP were also found in lung membrane preparation by radioreceptor assay. Incubation of synthetic atriopeptin III (10/sup -9/ to 10/sup -6/M) with lung tissue induced 1-28 fold increase in lung cGMP content. The results suggest that ANP-IR and its receptors existing in rat lung may be involved in the regulation of pulmonary function and have a synergic effect with ANP of cardiac origin in the control of water-electrolytes balance.
Chang, J.K.; Chang, D.; Xie, C.W.; Song, D.L.; Li, X.R.; Zhang, S.X.; Wang, T.L.; Tang, J.
Commissioning of the ITER-like ICRF antenna for JET
The new JET ion cyclotron resonance frequency (ICRF) ITER-like antenna (ILA), which was assembled during 2006, was commissioned on the JET RF testbed prior to installation on the JET torus. The 4 resonant double loops (RDL) of the ILA were tested at high power at 42 MHz up to 42 kV for 5 s in 10 min intervals. Low power matching studies using a saltwater load placed in front of the ILA have allowed testing and optimizing proposed matching algorithms on single RDLs, paired RDLs and finally on the full array. The upper limit of the frequency range of the ILA appears to be limited to 47 49 MHz due to the effect on the electrical lengths of the connection between the capacitors and the conjugate T point. Capacitor position scans have allowed obtaining the necessary data to confirm the RF model of the RDL which is necessary for the scattering matrix arc detection. The latter is deemed necessary in order to detect arcs at the low impedance conjugate T of the circuit. The antenna was installed onto JET during August 2007 and commissioning on plasma started May 2008. At present the commissioning of the ILA on JET is ongoing in a series of dedicated experimental campaigns.
Durodie, F. [ERM-KMS, Association EURATOM-Belgian State, Brussels, Belgium; Dumortier, P. [ERM-KMS, Association EURATOM-Belgian State, Brussels, Belgium; Huygen, S. [ERM-KMS, Association EURATOM-Belgian State, Brussels, Belgium; Jachmich, S. [ERM-KMS, Association EURATOM-Belgian State, Brussels, Belgium; Lerche, E. [ERM-KMS, Association EURATOM-Belgian State, Brussels, Belgium; Messiaen, A. [ERM-KMS, Association EURATOM-Belgian State, Brussels, Belgium; Ongena, J. [ERM-KMS, Association EURATOM-Belgian State, Brussels, Belgium; Van Eester, D. [Laboratory for Plasma Physics-ERM/KMS (LPP-ERM/KMS), Brussels, Belgium; Vervier, M. [ERM-KMS, Association EURATOM-Belgian State, Brussels, Belgium; Vrancken, M. [ERM-KMS, Association EURATOM-Belgian State, Brussels, Belgium; Nightingale, M. [EURATOM / UKAEA, Abingdon, UK; Blackman, T. [EURATOM / UKAEA, Abingdon, UK; Edwards, P. [EURATOM / UKAEA, Abingdon, UK; Fanthome, J. [EURATOM / UKAEA, Abingdon, UK; Graham, M. [EURATOM / UKAEA, Abingdon, UK; Jacquet, P. [EURATOM / UKAEA, Abingdon, UK; Kaye, A. [EURATOM / UKAEA, Abingdon, UK; Mayoral, M. -L. [EURATOM / UKAEA, Abingdon, UK; Monakhov, I. [EURATOM / UKAEA, Abingdon, UK; Nicholls, K. [EURATOM / UKAEA, Abingdon, UK; Stork, D. [EURATOM / UKAEA, Abingdon, UK; Walden, A. [EURATOM / UKAEA, Abingdon, UK; Whitehurst, A. [EURATOM / UKAEA, Abingdon, UK; Zastrow, K. -D. [EURATOM / UKAEA, Abingdon, UK; Argouarch, A. [CEA-Cadarache, St. Paul lex Durance, France; Berger-By, G. [CEA-Cadarache, St. Paul lex Durance, France; Loarer, T. [CEA-Cadarache, St. Paul lex Durance, France; Rimini, F. [CEA-Cadarache, St. Paul lex Durance, France; Castano-Giraldo, C. [University of Illinois, Urbana-Champaign; Caughman, John B [ORNL; Goulding, Richard Howell [ORNL; Cocilovo, V. [Association Euratom-ENEA sulla Fusione, Italy; Frigione, D. [Association Euratom-ENEA sulla Fusione, Italy; Sozzi, C. [Association Euratom-ENEA sulla Fusione, Italy; Hobrik, J. [Max-Planck-Institut fu?r Plasmaphysik, EURATOM Association, Garching, Germany; Lamalle, Philippe [ITER Joint Work Site, Cadarache; Nave, M. F. F. [Association EURATOM/IST, Lisbon, Portugal; Tsalas, M. [Association EURATOM-Hellas, Attica, Greece
What Does Self-Assessment of Safety Culture Look Like? Discussion...
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NIST, CU to Build Instrument to Help Search for Earth-like ...
NIST, CU to Build Instrument to Help Search for Earth-like Planets. For Immediate Release: November 3, 2009. ...
Some Like It Hot: How to Heat a 'Nano Bathtub' the JILA Way
Some Like It Hot: How to Heat a 'Nano Bathtub' the JILA Way. For Immediate Release: July 21, 2010. ...
Molecular genetic analysis reveals that a nonribosomal peptide synthetase-like (NRPS-like) gene in Aspergillus nidulans is responsible for microperfuranone biosynthesis
Genome sequencing of Aspergillus species including A. nidulans has revealed that there are far more secondary metabolite biosynthetic gene clusters than secondary metabolites isolated from these organisms. This implies that these organisms can produce additional secondary metabolites have not yet been elucidated. The A. nidulans genome contains twelve nonribosomal peptide synthetase (NRPS), one hybrid polyketide synthase/nonribosomal peptide synthetase (PKS/NRPS), and fourteen NRPS-like genes. The only NRPS-like gene in A. nidulans with a known product is tdiA which is involved in terrequinone A biosynthesis. To attempt to identify the products of these NRPS-like genes, we replaced the native promoters of the NRPS-like genes with the inducible alcohol dehydrogenase (alcA) promoter. Our results demonstrated that induction of the single NRPS-like gene AN3396.4 led to the enhanced production of microperfuranone. Furthermore, heterologous expression of AN3396.4 in A. niger confirmed that only one NRPS-like gene, AN3396.4, is necessary for the production of microperfuranone.
Yeh, Hsu-Hua; Chiang, Yi Ming; Entwistle, Ruth; Ahuja, Mammeet; Lee, Kuan-Han; Bruno, Kenneth S.; Wu, Tung-Kung; Oakley, Berl R.; Wang, Clay C.
The GammeV suite of experimental searches for axion-like particles
We report on the design and results of the GammeV search for axion-like particles and for chameleon particles. We also discuss plans for an improved experiment to search for chameleon particles, one which is sensitive to both cosmological and power-law chameleon models. Plans for an improved axion-like particle search using coupled resonant cavities are also presented. This experiment will be more sensitive to axion-like particles than stellar astrophysical models or current helioscope experiments.
Steffen, Jason H.; /Fermilab; Upadhye, Amol; /KICP, Chicago /Chicago U., EFI
One of These Homes is Not Like the Other: Residential Energy Consumption Variability
Like the Other: Residential Consumption Variability Phillipthe total annual energy consumption. The behavior patternsin total residential energy consumption per home, even when
Kelsven, Phillip
Soliton-like waves of nuclear burning in the neutron multiplicating media : (theory and computational approach).
??The research project has dealt with a conceptual design of a model of an innovative inherently safe nuclear soliton-like fast reactor of Feoktistov type. The� (more)
Byegunova, Olga
Mono-Like Ingot/Wafers Made of Solar-Grade Silicon for Solar Cells ...
About this Abstract. Meeting, 2012 TMS Annual Meeting & Exhibition. Symposium , Solar Cell Silicon. Presentation Title, Mono-Like Ingot/Wafers Made of�...
Corrosion Resistance of Diamond-Like Carbon (DLC) Lined Pipe to ...
Author(s), Peter F. Ellis, Brian Chambers, Bill Boardman. On-Site Speaker ( Planned), Peter F. Ellis. Abstract Scope, Diamond-like carbon (DLC) coatings applied�...
Relativistic nuclear recoil corrections to the energy levels of hydrogen-like and high $Z$ lithium like atoms in all orders in $?Z$
The relativistic nuclear recoil corrections to the energy levels of low-laying states of hydrogen-like and high $Z$ lithium-like atoms in all orders in $\\alpha Z$ are calculated. The calculations are carried out using the B-spline method for the Dirac equation. For low $Z$ the results of the calculation are in good agreement with the $\\alpha Z$ -expansion results. It is found that the nuclear recoil contribution, additional to the Salpeter's one, to the Lamb shift ($n=2$) of hydrogen is $-1.32(6)\\,kHz$. The total nuclear recoil correction to the energy of the $(1s)^{2}2p_{\\frac{1}{2}}-(1s)^{2}2s$ transition in lithium-like uranium constitutes $-0.07\\,eV$ and is largely made up of QED contributions.
A. N. Artemyev; V. M. Shabaev; V. A. Yerokhin
o I would like to make a donation to the Center for Refugee and Disaster Response
o I would like to make a donation to the Center for Refugee and Disaster Response in the amount.jhsph.edu/refugee/make_a_gift o I would like to receive e-mail updates The Center for Refugee and Disaster Response works with its on Refugee and Disaster Response. Options include online courses as well as field experience in disaster
Scharfstein, Daniel
Mar 24th 2011 | from the print edition 0 40Like Battery technology
Mar 24th 2011 | from the print edition 0 40Like Battery technology Highly charged A powerful experimental battery that can be recharged completely in minutes ENGINEERS have long dreamed of shortening the time it takes to recharge batteries. Currently, that can be hours. For applications like motor vehicles
Braun, Paul
International thermonuclear experimental reactor-like extended Solovev equilibria with parallel flow
A Solovev-like equilibrium solution is extended to plasmas with incompressible flow parallel to the magnetic field. ITER-like configurations are constructed for Alfven Mach functions peaked either on or off the magnetic axis. The linear stability of the equilibrium is also examined by applying a sufficient condition.
Throumoulopoulos, G. N. [Section of Theoretical Physics, University of Ioannina, Association Euratom-Hellenic Republic, GR 451 10 Ioannina (Greece); Tasso, H. [Max-Planck-Institut fuer Plasmaphysik, Euratom Association, D-85748 Garching (Germany)
Design and realization of a snake-like robot system based on a spatial linkage mechanism
This paper presents a novel model of snake-like robots based on a spatial linkage mechanism. The reasonable structural parameters of the mechanism are obtained by performing a kinematic simulation. Then the kinematics of the spatial linkage mechanism ... Keywords: Kinematics, Locomotive gait, Motion control, Snake-like robot, Spatial parallel mechanism
Na Li; Tieshi Zhao; Yanzhi Zhao; Yongguang Lin
A revised electromagnetism-like mechanism for layout design of reconfigurable manufacturing system
The layout design problem is one of the most important issues for manufacturing system design and control. A revised electromagnetism-like mechanism (REM) is proposed in this paper for the layout design of reconfigurable manufacturing systems utilizing ... Keywords: Automated guided vehicle, Electromagnetism-like mechanism, Layout design, Variable neighbourhood search
Xianping Guan; Xianzhong Dai; Baijing Qiu; Jun Li
AdaBoost face detection on the gpu using Haar-like features
Face detection is a time consuming task in computer vision applications. In this article, an approach for AdaBoost face detection using Haar-like features on the GPU is proposed. The GPU adapted version of the algorithm manages to speed-up the detection ... Keywords: CUDA, GPU, OpenGL, adaboost, face detection, haar-like features
M. Mart�nez-Zarzuela; F. J. D�az-Pernas; M. Ant�n-Rodr�guez; F. Perozo-Rond�n; D. Gonz�lez-Ortega
The Pacific�s Response to Surface Heating in 130 Yr of SST: La Ni�a�like or El Ni�o�like?
Using a modified method of multiple linear regression on instrumented sea surface temperature (SST) in the two longest historical datasets [the Extended Reconstructed SST dataset (ERSST) and the Met Office Hadley Centre Sea Ice and SST dataset (HadISST)], it is found that the response to increased greenhouse forcing is a warm SST in the mid- to eastern Pacific Ocean in the equatorial region in the annual or seasonal mean. The warming is robustly statistically significant at the 95 % confidence level. Consistent with this, the smaller radiative heating from solar forcing produces a weak warming also in this region, and the spatial pattern of the response is neither La Ni�a�like nor El Ni�o�like. It is noted that previous reports of a coldtongue (La Ni�a�like) response to increased greenhouse or to solar-cycle heating were likely caused by contaminations due to the dominant mode of natural response in the equatorial Pacific. The present result has implications on whether the Walker circulation is weakened or strengthened in a warmer climate and on coupled atmosphere�ocean climate model validation. 1.
Ka-kit Tung; Jiansong Zhou
Gas-like state of $?$ clusters around $^{16}$O core in $^{24}$Mg
We have studied gas-like states of $\\alpha$ clusters around an $^{16}$O core in $^{24}$Mg based on a microscopic $\\alpha$-cluster model. This study was performed by introducing a Monte Carlo technique for the description of the THSR (Tohsaki Horiuchi Schuck R\\"{o}pke) wave function, and the coupling effect to other low-lying cluster states was taken into account. A large isoscalar monopole ($E0$) transition strength from the ground to the gas-like state is discussed. The gas-like state of two $\\alpha$ clusters in $^{24}$Mg around the $^{16}$O core appears slightly below the 2$\\alpha$-threshold e
T. Ichikawa; N. Itagaki; T. Kawabata; Tz. Kokalova; W. von Oertzen
What Does Self-Assessment of Safety Culture Look Like? Discussion from the
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No (Brain)power Outage at a Competition Like No Other
Office of Science (SC) Website
No (Brain)power Outage at a Competition Like No Other News In the News In Focus 2013 2012 2011 2010 2009 2008 2007 2006 2005 Presentations & Testimony Recovery Act Contact...
The Effects of a Jet-Like Current on Gravity Waves in Shallow Water
The effects of a strong current with horizontal shear on shallow water waves is studied. For jet-like currents, the existence of trapped waves and the reciprocity of scattering coefficients are pointed out. Detailed consequences of current ...
Chiang C. Mei; Edmond Lo
Liking to Be in America: Puerto Rico's Quest for Difference within the United States
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Oquendo, Angel
The Response of the Tropospheric Circulation to Water Vapor�Like Forcings in the Stratosphere
An idealized, dry general circulation model is used to examine the response of the tropospheric circulation to thermal forcings that mimic changes in stratospheric water vapor (SWV). It is found that SWV-like cooling in the stratosphere produces a ...
Neil F. Tandon; Lorenzo M. Polvani; Sean M. Davis
Glass-like thermal transport in AgSbTe2 | ORNL
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State Regulatory Framework Will Most Likely Result in Robust CO2 Pipeline
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"I'd Like to Check Out Two Books, One DVD, and One Electrical Meter,
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(j,0) {circle_plus} (0,j) representation space: Majorana-like construct
This is second of the two invited lectures presented at the ``XVII International School of Theoretical Physics: Standard Model and Beyond` 93.`` The text is essentially based on a recent publication by the present authors. Here, after briefly reviewing the (j, 0) {circle_plus} (0, j) Dirac-like construct in the front form, we present a detailed construction of the (j, 0) {circle_plus} (0, j) Majorana-like fields.
Ahluwalia, D.V.; Goldman, T.; Johnson, M.B.
High resolution n = 3 to n = 2 spectra of neon-like silver
Spectra of the n = 3 to n = 2 transitions in neon-like silver emitted from the Princeton Large Torus have been recorded with a high-resolution Bragg-crystal spectrometer. The measurements cover the wavelength region 3.3 to 4.1 A and include the forbidden 3p ..-->.. 2p electric quadrupole lines. Transitions in the adjacent sodium-like, and aluminum-like charge states of silver have also been observed and identified. The Ly-..cap alpha.. spectra of hydrogen-like argon and iron, the K..cap alpha.. spectra of helium-like argon, potassium, manganese, and iron, and the K..beta.. spectrum of helium-like argon fall in the same wavelength region in first or second order and have been measured concurrently. These spectra provide a coherent set of wavelength reference data obtained with the same spectrometer and from the same tokamak. This set is used as a basis to compare wavelength predictions for one- and two-electron systems to each other and to determine the transition energies of the silver lines with great accuracy.
Beiersdorfer, P.; Bitter, M.; von Goeler, S.; Cohen, S.; Hill, K.W.; Timberlake, J.; Walling, R.S.; Chen, M.H.; Hagelstein, P.L.; Scofield, J.H.
A Genome-Wide Analysis of FRT-Like Sequences in the
Efficient and precise genome manipulations can be achieved by the Flp/FRT system of site-specific DNA recombination. Applications of this system are limited, however, to cases when target sites for Flp recombinase, FRT sites, are preintroduced into a genome locale of interest. To expand use of the Flp/FRT system in genome engineering, variants of Flp recombinase can be evolved to recognize pre-existing genomic sequences that resemble FRT and thus can serve as recombination sites. To understand the distribution and sequence properties of genomic FRT-like sites, we performed a genome-wide analysis of FRT-like sites in the human genome using the experimentally-derived parameters. Out of 642,151 identified FRT-like sequences, 581,157 sequences were unique and 12,452 sequences had at least one exact duplicate. Duplicated FRT-like sequences are located mostly within LINE1, but also within LTRs of endogenous retroviruses, Alu repeats and other repetitive DNA sequences. The unique FRT-like sequences were classified based on the number of matches to FRT within the first four proximal bases pairs of the Flp binding elements of FRT and the nature of mismatched base pairs in the same region. The data obtained will be useful for the emerging field of genome engineering.
Human Genome; Jeffry L. Shultz; Eugenia Voziyanova; Jay H. Konieczka; Yuri Voziyanov
The simplicity of fractal-like flow networks for effective heat and mass transport
A variety of applications using disk-shaped fractal-like flow networks and the status of one and two-dimensional predictive models for these applications are summarized. Applications discussed include single-phase and two-phase heat sinks and heat exchangers, two-phase flow separators, desorbers, and passive micromixers. Advantages of using these fractal-like flow networks versus parallel-flow networks include lower pressure drop, lower maximum wall temperature, inlet plenum symmetry, alternate flow paths, and pressure recovery at the bifurcation. The compact nature of microscale fractal-like branching heat exchangers makes them ideal for modularity. Differences between fractal-like and constructal approaches applied to disk-shaped heat sink designs are highlighted, and the importance of including geometric constraints, including fabrication constraints, in flow network design optimization is discussed. Finally, a simple pencil and paper procedure for designing single-phase heat sinks with fractal-like flow networks based solely on geometric constraints is outlined. Benefit-to-cost ratios resulting from geometric-based designs are compared with those from flow networks determined using multivariable optimization. Results from the two network designs are within 11%. (author)
Pence, Deborah [Oregon State University, Mechanical Engineering, 204 Rogers Hall, Corvallis, Oregon 97331-6001 (United States)
Structure of Human Toll-like Receptor 3 (TLR3) Ligand-binding Domain
Human Toll-like Receptor Human Toll-like Receptor 3 (TLR3) Ligand-binding Domain Jungwoo Choe1, Matthew S. Kelker1, and Ian A. Wilson1 1Department of Molecular Biology and The Skaggs Institute for Chemical Biology, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, CA 92037 Figure 1. Overall structure of human TLR3 ECD. The N-terminal region is colored blue, the 23 canonical LRRs are in yellow and the C-terminal region is in pink. N-linked sugars that are observed in the electron density maps are shown in ball-and-stick. (From Choe et al. 2005). Innate immunity is the front line host defense that acts within minutes of infection to counter invasion by microorganisms. Members of the Toll-like receptor (TLR) family recognize conserved pathogen-associated molecular
Studies of Intermittency-like Phenomena in Plasma turbulence at IPR
The observation of intermittency in the turbulent scrape-off layer plasma of ADITYA tokamak was first reported about one and a half decade ago. In the last decade or so, several aspects of intermittency-like phenomena have been observed on tokamaks and other fusion devices throughout the world. A review of the research carried out at the Institute for Plasma Research (IPR) is presented, which closely follow the research trend on intermittency-like phenomena in plasmas worldwide. We also present our analysis of particle flux data in order to test the recently proposed fluctuation theorem, which states that the probability of 'entropy consuming' flux events falls off exponentially with the averaging time. This theorem, proposed in the context of small systems, is applied to macroscopic system like tokamak edge plasma by invoking an 'effective temperature' of the bath of drift waves from which, plasma objects take energy and carry out work of transporting matter
Jha, R.; Das, A.; Bisai, N.; Kaw, P. [Institute for Plasma Research, Bhat, Near Indira Bridge, Gandhinagar-382428 (India)
Formation of jet-like spikes from the ablative Rayleigh-Taylor instability
The mechanism of jet-like spike formation from the ablative Rayleigh-Taylor instability (ARTI) in the presence of preheating is reported. It is found that the preheating plays an essential role in the formation of the jet-like spikes. In the early stage, the preheating significantly increases the plasma density gradient, which can reduce the linear growth of ARTI and suppress its harmonics. In the middle stage, the preheating can markedly increase the vorticity convection and effectively reduce the vorticity intensity resulting in a broadened velocity shear layer near the spikes. Then the growth of ablative Kelvin-Helmholtz instability is dramatically suppressed and the ARTI remains dominant. In the late stage, nonlinear bubble acceleration further elongates the bubble-spike amplitude and eventually leads to the formation of jet-like spikes.
Wang, L. F.; Ye, W. H.; He, X. T. [HEDPS and CAPT, Peking University, Beijing 100871 (China); Institute of Applied Physics and Computational Mathematics, Beijing 100088 (China); Zhang, W. Y. [Institute of Applied Physics and Computational Mathematics, Beijing 100088 (China); Sheng, Z. M. [Key Laboratory for Laser Plasmas (MoE) and Department of Physics, Shanghai Jiaotong University, Shanghai 200240 (China); Beijing National Laboratory of Condensed Matter Physics, Institute of Physics, CAS, Beijing 100190 (China); Yu, M. Y. [Institute for Fusion Theory and Simulation, Zhejiang University, Hangzhou 310027 (China); Institute for Theoretical Physics I, Ruhr University, Bochum D-44780 (Germany)
Structure of a fibronectin type III-like module from Clostridium thermocellum
878 878 doi:10.1107/S1744309110022529 Acta Cryst. (2010). F66, 878-880 Acta Crystallographica Section F Structural Biology and Crystallization Communications ISSN 1744-3091 Structure of a fibronectin type III-like module from Clostridium thermocellum Markus Alahuhta, Qi Xu, Roman Brunecky, William S. Adney, Shi-You Ding, Michael E. Himmel and Vladimir V. Lunin* BioSciences Center, National Renewable Energy Laboratory, 1617 Cole Boulevard, Golden, Colorado 80401-3305, USA Correspondence e-mail: firstname.lastname@example.com Received 29 April 2010 Accepted 11 June 2010 PDB Reference: fibronectin type III-like module, 3mpc. The 1.6 A ˚ resolution structure of a fibronectin type III-like module from Clostridium thermocellum (PDB code 3mpc) with two molecules in the asymmetric unit is reported. The crystals used for data collection belonged to space group P2 1 2 1 2 1 , with
What Does the Energy Economy Look Like in Your State? | Department of
Does the Energy Economy Look Like in Your State? Does the Energy Economy Look Like in Your State? What Does the Energy Economy Look Like in Your State? January 29, 2013 - 11:21am Addthis The Energy Information Administration's video tour of its new state data portal. Matthew Loveless Matthew Loveless Data Integration Specialist, Office of Public Affairs What does this project do? The state data portal presents EIA energy data with new maps, comparison tools, and a data browser that makes it easy to see how your state compares. Back in October, the U.S. Energy Information Administration (EIA) launched the beta version of its state energy portal. Last week, I had the opportunity to take a guided tour of the latest additions to the site, and EIA has built a fantastic resource for anyone interested in the U.S. energy
Interference of outgoing electromagnetic waves generated by two point-like sources
An energy-momentum carried by electromagnetic field produced by two point-like charged particles is calculated. Integration region considered in the evaluation of the bound and emitted quantities produced by all points of world lines up to the end points at which particles' trajectories puncture an observation hyperplane $y^0=t$. Radiative part of the energy-momentum contains, apart from usual integrals of Larmor terms, also the sum of work done by Lorentz forces of point-like charges acting on one another. Therefore, the combination of wave motions (retarded Li\\'enard-Wiechert solutions) leads to the interaction between the sources.
Yurij Yaremko
Resonance-like nuclear processes in solids: 3rd and 4th order processes
It is recognized that in the family of heavy charged particle and electron assisted double nuclear processes resonance-like behavior can appear. The transition rates of the heavy particle assisted 3rd-order and electron assisted 4th-order resonance like double nuclear processes are determined. The power of low energy nuclear reactions in $Ni-H$ systems formed in $Ni$ placed in $H_{2}$ gas environment is treated. Nuclear power produced by quasi-resonant electron assisted double nuclear processes in these $Ni-H$ systems is calculated. The power obtained tallies with experiments and its magnitude is considerable for practical applications.
P�ter K�lm�n; Tam�s Keszthelyi
K�lm�n, P�ter
Extended Electrodynamics: III. Free Photons and (3+1)-Soliton- like Vacuum Solutions
This paper aims to give explicitly all non-linear vacuum solutions to our non-linear field equations, and to define in a coordinate free manner the important subclass of non-linear solutions, which we call almost photon-like. By means of a correct introduction of the local and integral intrinsic angular momentums of these solutions, we saparate the photon-like solutions through the requirement their integral intrinsic angular momentums to be equal to the Planck's constant. Finally, we consider such solutions, moving radially to or from a given center, using standard spherical coordinates.
S. Donev; M. Tashkova
Violation of Bell-like Inequality for spin-energy entanglement in neutron polarimetry
Violation of a Bell-like inequality for a spin-energy entangled neutron state has been confirmed in a polarimetric experiment. The proposed inequality, in Clauser-Horne-Shimony-Holt (CHSH) formalism, relies on correlations between the spin and energy degree of freedom in a single-neutron system. The entangled states are generated utilizing a suitable combination of two radio-frequency fields in a neutron polarimeter setup. The correlation function S is determined to be 2.333+/-0.005, which violates the Bell-like CHSH inequality by more than 66 standard deviations.
S. Sponar; J. Klepp; C. Zeiner; G. Badurek; Y. Hasegawa
Resonantly photo-pumped nickel-like erbium x-ray laser
A resonantly photo-pumped x-ray laser (10) that enhances the gain of several laser lines that also lase because of collisional excitations and recombination processes, is described. The laser comprises an aluminum (12) and erbium (14) foil combination (16) that is driven by two beams (18, 20) of intense line focused (22, 24) optical laser radiation. Ground state nickel-like erbium ions (34) are resonantly photo-pumped by line emission from hydrogen-like aluminum ions (32). 3 figs., 1 tab.
Nilsen, J.
High efficiency coaxial klystron-like relativistic backward wave oscillator with a premodulation cavity
The klystron-like relativistic backward wave oscillator (RBWO) combines the transition radiation with Cerenkov radiation and has demonstrated microwave output of high power and high efficiency. The coaxial slow wave structure device can produce microwave with a lower frequency in a smaller cross section. For the purpose of high efficiency, low frequency, and miniaturization, a coaxial klystron-like RBWO with a premodulation cavity is presented. Particle-in-cell simulations show that a microwave with power of 1.15 GW and frequency of 2.1 GHz is generated with conversion efficiency of 48%, whereas for the device with a reflector, the efficiency is 38%.
Xiao Renzhen; Teng Yan; Chen Changhua; Sun Jun [Science and Technology on High Power Microwave Laboratory, Northwest Institute of Nuclear Technology, Xi'an 710024 (China)
Metal oxide superconducting powder comprised of flake-like single crystal particles
Powder of a ceramic superconducting material is synthesized such that each particle of the powder is a single crystal having a flake-like, nonsymmetric morphology such that the c-axis is aligned parallel to the short dimension of the flake. Nonflake powder is synthesized by the normal methods and is pressed into pellets or other shapes and fired for excessive times to produce a coarse grained structure. The fired products are then crushed and ground producing the flake-like powder particles which exhibit superconducting characteristics when aligned with the crystal lattice. 3 figs.
Capone, D.W.; Dusek, J.
Powder of a ceramic superconducting material is synthesized such that each particle of the powder is a single crystal having a flake-like, nonsymmetric morphology such that the c-axis is aligned parallel to the short dimension of the flake. Nonflake powder is synthesized by the normal methods and is pressed into pellets or other shapes and fired for excessive times to produce a coarse grained structure. The fired products are then crushed and ground producing the flake-like powder particles which exhibit superconducting characteristics when aligned with the crystal lattice.
Capone, Donald W. (Bolingbrook, IL); Dusek, Joseph (Downers Grove, IL)
Regulatory Influences That Will Likely Affect Success of Plug-in Hybrid and Battery Electric Vehicles
Influences That Will Likely Influences That Will Likely Affect Success of Plug-in Hybrid and Battery Electric Vehicles By Dan Santini Argonne National Laboratory firstname.lastname@example.com Clean Cities Coordinators' Webinar Sept. 16, 2010 Vehicle fuel use regulation/policy measures differ. Which should measure plug-in success? Corporate average fuel economy (CAFE) ratings do not represent real world fuel use. However, the range ratings of EVs and PHEVs are based on CAFE tests. "Window sticker" information on vehicle fuel use predicts more gasoline and electricity use than CAFE ratings. - The GREET model (basis of GHG saving estimates) is based on real world fuel use
Characterization of a NifS-Like Chloroplast Protein from Arabidopsis. Implications for Its Role in Sulfur and
Characterization of a NifS-Like Chloroplast Protein from Arabidopsis. Implications for Its Role 6110011, Japan (S.-I.K., H.M., N.E., T.K.) NifS-like proteins catalyze the formation of elemental and characterize chloroplast NifS-like proteins. Using seleno-Cys as a substrate, it was found that 25% to 30
Fabrication and characterization of flower-like zinc oxide for dye-sensitized solar cell photoanode
Zinc oxide porous film consists of nanoparticles which assemble forming flake-like particle is synthesised through pyrolitic of chemical bath deposition product. Zinc oxide film consists of nanoparticle around 20 nm with surface area of 58.6 m2/gram ... Keywords: chemical bath depostition, dye sensitized soalr cell, nanoparticle, porous film, zinc carbonate hydroxide, zinc oxide
H. Abdullah; N. P. Ariyanto; B. Yuliarto; S. Junaidi; Yap Chi Chin; Muhamad Yahaya; S. Shaari
From Maxwell Stresses to Photon-like Objects through Curvature Geometrisation of Physical Interaction
This paper aims to review our recent results on exploring the capabilities of non-quantum field theory as a possible tool for describing single photon-like objects, considered as massless time-stable spatially finite physical entities with compatible translational-rotational dynamical structure. It consists of five chapters and includes 22 sections and subsections.
Conservation laws for voter-like models on random directed networks
Conservation laws for voter-like models on random directed networks M. ´Angeles Serrano1 that conserved quantities as weighted linear superpositions of spin states exist for all three processes and of the relative densities that decay exponentially to a homogeneous stationary value given by the conserved
Stadler, Peter F.
Adding an energy-like conservation law to the leapfrog integrator
The leapfrog integrator is widely used because of its excellent stability in molecular dynamics simulation. This is recognized as being due to the existence of a discrete variational structure of the equations. We introduce a modified leapfrog method which includes an additional energy-like conservation law by embedding a molecular dynamics simulation within a larger dynamical system.
Maggs, A C
Light-Like Noncommutativity, Light-Front Quantization and New Light on UV/IR Mixing
We revisit the problem of quantizing field theories on noncommutative Moyal spacetime with \\emph{light-like} noncommutativity. To tackle the issues arising from noncommuting and hence nonlocal time, we argue that for this case light-front quantization procedure should be employed. In this appropriate quantization scheme we perform the non-planar loop analysis for the light-like noncommutative field theories. One of the important and peculiar features of light-front quantization is that the UV cutoff of the light-cone Hamiltonian manifests itself as an IR cutoff for the light-cone momentum, $p^+$. Due to this feature, the naive results of covariant quantization for the light-like case allude to the absence of the UV/IR mixing in the light-front quantization. However, by a careful analysis of non-planar loop integrals we show that this is not the case and the UV/IR mixing persists. In addition, we argue in favour of the perturbative unitarity of light-like noncommutative field theories in the light-front quantization scheme.
M. M. Sheikh-Jabbari; A. Tureanu
Investigation on LIGA-like process based on multilevel imprint lithography
A low-cost quasi-LIGA process is proposed, in which, instead of using thick resist technique, micro-structure with large structural height is achieved by multilevel imprinting and through-mask plating. To achieve precise alignment between individual ... Keywords: Imprint lithography, LIGA-like, Layered fabrication, Microstructure
Quandai Wang; Yugang Duan; Yucheng Ding; Bingheng Lu; Jiawei Xiang; Lianfa Yang
Free-Riding on BitTorrent-Like Peer-to-Peer File Sharing Systems: Modeling
Free-Riding on BitTorrent-Like Peer-to-Peer File Sharing Systems: Modeling Analysis and Improvement contribution and prevent free-riding. However, BitTorrent's ability to prevent free-riding needs further study. In this paper, we present a fluid model with two different classes of peers to capture the effect of free
Wu, Jie
Pairing and alpha-like quartet condensation in N=Z nuclei
We discuss the treatment of isovector pairing by an alpha-like quartet condensate which conserves exactly the particle number, the spin and the isospin. The results show that the quartet condensate describes accurately the isovector pairing correlations in the ground state of systems with an equal number of protons and neutrons
N. Sandulescu; J. Dukelsky; D. Negrea
Cerenkov-like radiation in a binary superfluid flow past an obstacle H. Susanto,1
Cerenkov-like radiation in a binary superfluid flow past an obstacle H. Susanto,1 P. G. Kevrekidis of as a type of nonlinear Cerenkov radiation that is emitted, when the motion of the impurity is supercritical of the Cerenkov emission of phonons by a laser obstacle was reported 19 ; in a different study 20 , it has been
Susanto, Hadi
Although the 55 Cnc system contains multiple, closely packed planets that are presumably in a coplanar configuration, we use numerical simulations to demonstrate that they are likely to be highly inclined to their parent star's spin axis. Due to perturbations from its distant binary companion, this planetary system precesses like a rigid body about its parent star. Consequently, the parent star's spin axis and the planetary orbit normal likely diverged long ago. Because only the projected separation of the binary is known, we study this effect statistically, assuming an isotropic distribution for wide binary orbits. We find that the most likely projected spin-orbit angle is {approx}50 Degree-Sign , with a {approx}30% chance of a retrograde configuration. Transit observations of the innermost planet-55 Cnc e-may be used to verify these findings via the Rossiter-McLaughlin effect. 55 Cancri may thus represent a new class of planetary systems with well-ordered, coplanar orbits that are inclined with respect to the stellar equator.
Kaib, Nathan A.; Duncan, Martin J. [Department of Physics, Queen's University, Kingston, ON K7L 3N6 (Canada); Raymond, Sean N., E-mail: firstname.lastname@example.com [Universite de Bordeaux, Observatoire Aquitain des Sciences de l'Univers, 2 rue de l'Observatoire, BP 89 33271 Floirac Cedex (France)
A Lagged Warm Event�Like Response to Peaks in Solar Forcing in the Pacific Region
The forced response coincident with peaks in the 11-yr decadal solar oscillation (DSO) has been shown to resemble a cold event or La Ni�a�like pattern during December�February (DJF) in the Pacific region in observations and two global coupled ...
Gerald A. Meehl; Julie M. Arblaster
Hey There. Would You Like to Buy a Thneed? | Department of Energy
Hey There. Would You Like to Buy a Thneed? Hey There. Would You Like to Buy a Thneed? Hey There. Would You Like to Buy a Thneed? February 15, 2011 - 6:30am Addthis John Lippert Pssst. Hey there. Yeah, you! Would you like to buy a Thneed? A Thneed's a Fine-Something-That-All-People-Need! For the first 90 days, you may try it for free! For 90 days I won't bother you; I'll just let you be! Just give me your credit card number, now, please. You may cancel and not pay. I'm not being a tease. If you cancel within 90 days and don't stall, I swear that you won't have to pay, not at all! We all know what happens on day 91, don't we? Haven't we all fallen into this trap at one time or another? We may use their product or service for a full 30 days, 90 days, or whatever time period, depending on the lure. It WOULD be fun to try it out, after all. And the salespersons are so
Questions and Answers - Is possible to make a real light saber like in the
Can you use light to push light? Can you use light to push light? Previous Question (Can you use light to push light?) Questions and Answers Main Index Next Question (What's used to steer Jefferson Lab's electron beam?) What's used to steer JeffersonLab's electron beam? Is possible to make a "real" light saber like in the Star Wars movies? Nice idea, but nothing like it really exists. For example, if it were a laser beam why does it just stop at the end of the saber? Light just keeps on going. If it were to have the power capability of slicing through metal bars (and people) it would have to have LOTS of power behind it. Big commercial lasers can cut through steel 1/16th of an inch thick although fairly slowly (1/2" cut a second or so) but these devices are bigger than a
A handbook of vector-like quarks: mixing and single production
We obtain constraints on the mixing of vector-like quarks coupling predominantly to the third generation. We consider all (seven) relevant types of vector-like quarks, individually. The constraints are derived from oblique corrections and Z -> b bbar measurements at LEP and SLC. We investigate the implications of these constraints on LHC phenomenology, concerning the decays of the heavy quarks and their single production. We also explore indirect effects of heavy quark mixing in top and bottom couplings. A remarkable effect is the possibility of explaining the anomalous forward-backward asymmetry in Z -> b bbar at LEP, with a hypercharge -5/6 doublet. We also study the impact of the new quarks on single Higgs production at the LHC and Higgs decay.
J. A. Aguilar-Saavedra; R. Benbrik; S. Heinemeyer; M. Perez-Victoria
Reactive instabilities of lower hybrid-like waves in regions with parallel currents
The dispersion and reactive instabilities of obliquely propagating waves near the lower hybrid (LH) frequency are studied in plasma carrying a current parallel to the magnetic field. Possible applications of these instabilities include magnetic reconnection regions, where LH-like waves may accelerate and heat both ions and electrons. In plasmas with a bulk drift of electrons relative to the ions at speed v{sub d} along the magnetic field, the forward and backward propagating LH modes are shown to be replaced by four LH-like modes. Reactive instabilities are discovered here for a forward propagating mode with Re({omega}){approx_equal}k{sub ||}v{sub d}/2 and a backward propagating mode with Re({omega})cold plasma calculations and agree well, confirming that the discovered instabilities are reactive. In the cold plasma limit, the forward and backward propagating instabilities occur for v{sub d} below and above some thresholds, respectively.
Verdon, A. L.; Cairns, Iver H.; Melrose, D. B.; Robinson, P. A. [School of Physics, University of Sydney, Sydney, New South Wales 2006 (Australia)
Distinguishing a SM-like MSSM Higgs boson from SM Higgs boson at muon collider
We explore the possibility of distinguishing the SM-like MSSM Higgs boson from the SM Higgs boson via Higgs boson pair production at future muon collider. We study the behavior of the production cross section in SM and MSSM with Higgs boson mass for various choices of MSSM parameters tan \\beta and m\\sub A. We observe that at fixed CM energy, in the SM, the total cross section increases with the increase in Higgs boson mass whereas this trend is reversed for the MSSM case. The changes that occur for the MSSM case in comparison to the SM predictions are quantified in terms of the relative percentage deviation in cross section. The observed large deviations in cross section for different choices of Higgs mass suggest that the measurements of the cross section could possibly distinguish the SM-like MSSM Higgs boson from the SM Higgs boson.
Jai Kumar Singhal; Sardar Singh; Ashok K Nagawat
Far Ultraviolet Spectroscopic Explorer Spectroscopy of the Nova-like BB Doradus
We present an analysis of the Far Ultraviolet Spectroscopic Explorer ({\\it{FUSE}}) spectra of the little-known southern nova-like BB Doradus. The spectrum was obtained as part of our Cycle 8 {\\it FUSE} survey of high declination nova-like stars. The FUSE spectrum of BB Dor, observed in a high state, is modeled with an accretion disk with a very low inclination (possibly lower than 10deg). Assuming an average WD mass of 0.8 solar leads to a mass accretion rate of 1.E-9 Solar mass/year and a distance of the order of 650 pc, consistent with the extremely low galactic reddening in its direction. The spectrum presents some broad and deep silicon and sulfur absorption lines, indicating that these elements are over-abundant by 3 and 20 times solar, respectively.
P. Godon; E. M. Sion; P. E. Barrett; P. Szkody; E. M. Schlegel
Godon, P; Barrett, P E; Szkody, P; Schlegel, E M
Plasma spraying method for forming diamond and diamond-like coatings
A method and composition is disclosed for the deposition of a thick layer of diamond or diamond-like material. The method includes high temperature processing wherein a selected composition including at least glassy carbon is heated in a direct current plasma arc device to a selected temperature above the softening point, in an inert atmosphere, and is propelled to quickly quenched on a selected substrate. The softened or molten composition crystallizes on the substrate to form a thick deposition layer comprising at least a diamond or diamond-like material. The selected composition includes at least glassy carbon as a primary constituent and may include at least one secondary constituent. Preferably, the secondary constituents are selected from the group consisting of at least diamond powder, boron carbide (B{sub 4}C) powder and mixtures thereof. 9 figs.
Holcombe, C.E.; Seals, R.D.; Price, R.E.
A method and composition for the deposition of a thick layer (10) of diamond or diamond-like material. The method includes high temperature processing wherein a selected composition (12) including at least glassy carbon is heated in a direct current plasma arc device to a selected temperature above the softening point, in an inert atmosphere, and is propelled to quickly quenched on a selected substrate (20). The softened or molten composition (18) crystallizes on the substrate (20) to form a thick deposition layer (10) comprising at least a diamond or diamond-like material. The selected composition (12) includes at least glassy carbon as a primary constituent (14) and may include at least one secondary constituent (16). Preferably, the secondary constituents (16) are selected from the group consisting of at least diamond powder, boron carbide (B.sub.4 C) powder and mixtures thereof.
Holcombe, Cressie E. (Farragut, TN); Seals, Roland D. (Oak Ridge, TN); Price, R. Eugene (Knoxville, TN)
A Stellar Model-fitting Pipeline for Solar-like Oscillations
Over the past two decades, helioseismology has revolutionized our understanding of the interior structure and dynamics of the Sun. Asteroseismology will soon place this knowledge into a broader context by providing structural data for hundreds of Sun-like stars. Solar-like oscillations have already been detected from the ground in several stars, and NASA's Kepler mission is poised to unleash a flood of stellar pulsation data. Deriving reliable asteroseismic information from these observations demands a significant improvement in our analysis methods. We report the initial results of our efforts to develop an objective stellar model-fitting pipeline for asteroseismic data. The cornerstone of our automated approach is an optimization method using a parallel genetic algorithm. We describe the details of the pipeline and we present the initial application to Sun-as-a-star data, yielding an optimal model that accurately reproduces the known solar properties.
Metcalfe, T S; Christensen-Dalsgaard, J
We obtain constraints on the mixing of vector-like quarks coupling predominantly to the third generation. We consider all (seven) possible types of vector-like quarks, individually. The constraints are derived from oblique corrections and Z -> b bbar measurements at LEP and SLC. We investigate the implications of these constraints on LHC phenomenology, concerning the decays of the heavy quarks and their single production. We also explore indirect effects of heavy quark mixing in top and bottom couplings. The most remarkable of these effects is the possibility of explaining the anomalous forward-backward asymmetry in Z -> b bbar at LEP, with a hypercharge -5/6 doublet. We also study the impact of the new quarks on single Higgs production at the LHC and Higgs decay.
Building the Chessboard-like Supramolecular Structure on Au (111) Surfaces
We investigate an anthracene derivative, 3(5)-(9-anthryl) pyrazole (ANP), self-assembled on the Au (111) surface by means of scanning tunneling microscopy (STM) and density functional theory (DFT) calculations. A chessboard-like network structure composed of ANP molecules is found, covering the whole Au (111) substrate. Our STM results and DFT calculations reveal that the formation of chessboard-like networks originates from a basic unit cell, a tetramer structure, which is formed by four ANP molecules connected through C-H-N hydrogen-bonds. The hydrogen bonds inside each tetramer and the molecular adsorption interaction are fundamentally important in providing a driving force for formation of the supramolecular networks.
Dou, Ruifen; Zhang, Ping; Zhong, Dingyong; Fuchs, Harald; Wang, Yue; Chi, Lifeng
NATURAL GAS FROM SHALE: Questions and Answers It Seems Like Shale Gas Came Out
It Seems Like Shale Gas Came Out It Seems Like Shale Gas Came Out of Nowhere - What Happened? Knowledge of gas shale resources and even production techniques has been around a long time (see "Technological Highlights" timeline). But even as recently as a few years ago, very little of the resource was considered economical to produce. Innovative advances - especially in horizontal drilling, hydraulic fracturing and other well stimulation technologies - did much to make hundreds of trillions of cubic feet of shale gas technically recoverable where it once was not. The U.S. Department of Energy's (DOE) Office of Fossil Energy, along with industry partners, was heavily involved in the innovation chain, and helped to make some of these techniques, as well as protective
A Solid-like Crystal Structure on the Surface of a Liquid Alloy
A Solid-like Crystal Structure on the Surface of a Liquid Alloy A Solid-like Crystal Structure on the Surface of a Liquid Alloy A substance used in nanotechnology contains unusual structures at its surface, according to a team of researchers using the ChemMatCARS 15-ID beamline at the Advanced Photon Source. The research results, developed at the Center for Nanoscale Materials at Argonne, are published today in the journal Science. The substance in question is a gold-silicon eutectic alloy, 82 percent gold and 18 percent silicon. The term eutectic means that the combination melts at a temperature lower than that of the melting temperature of either of its components. For most eutectic alloys, the difference between the melting point of the alloy and those of its pure components is about 100 degrees Celsius; the gold-silicon eutectic alloy melts about 1,000 °C
The Sun-like activity of the solar twin 18 Scorpii
We present the results of 10 yr of complementary spectroscopic and photometric observations of the solar twin 18 Scorpii. We show that over the course of its ~7 year chromospheric activity cycle, 18 Sco's brightness varies in the same manner as the Sun's and with a likely brightness variation of 0.09%, similar to the 0.1% decadal variation in the total solar irradiance.
Jeffrey C. Hall; Gregory W. Henry; G. Wesley Lockwood
Non-Hermitian oscillator-like Hamiltonians and $?$-coherent states revisited
Previous $\\lambda$-deformed {\\it non-Hermitian} Hamiltonians with respect to the usual scalar product of Hilbert spaces dealing with harmonic oscillator-like developments are (re)considered with respect to a new scalar product in order to take into account their property of self-adjointness. The corresponding deformed $\\lambda$-states lead to new families of coherent states according to the DOCS, AOCS and MUCS points of view.
J. Beckers; J. F. Cari�ena; N. Debergh; G. Marmo
Thermodynamics of the Three-dimensional Black Hole with a Coulomb-like Field
In this paper, we study the thermodynamical properties of the (2+1)dimensional black hole with a Coulomb-like electric field and the differential form of the first law of thermodynamics is derived considering a virtual displacement of its event horizon. This approach shows that it is possible to give a thermodynamical interpretation to the field equations near the horizon. The Lambda=0 solution is studied and its interesting thermodynamical properties are commented.
Alexis Larranaga; Luz Angela Garcia
This paper aims to review our recent results on exploring the capabilities of non-quantum field theory as a possible tool for describing single photon-like objects, considered as massless time-stable spatially finite physical entities with compatible translational-rotational dynamical structure. The main idea is to interpret the local physical interaction as available Frobenius curvature. It consists of five chapters and includes 22 sections and subsections.
Superlattice-like stacking fault array in ion-irradiated GaN
Controlling defects in crystalline solids is of technological importance for realizing desirable materials properties. Irradiation with energetic particles is useful for designing the spatial distribution and concentration of defects in materials. Here, we performed ion irradiation into hexagonal GaN with the wurtzite structure and demonstrated the spontaneous formation of superlattice-like stacking fault arrays. It was found that the modulation period can be controlled by irradiation conditions and post-irradiation heat treatments.
Ishimaru, Dr. Manabu [Osaka University; Usov, Igor Olegovich [ORNL; Zhang, Yanwen [ORNL; Weber, William J [ORNL
A thermodynamic model for aqueous solutions of liquid-like density
The paper describes a model for the prediction of the thermodynamic properties of multicomponent aqueous solutions and discusses its applications. The model was initially developed for solutions near room temperature, but has been found to be applicable to aqueous systems up to 300/sup 0/C or slightly higher. A liquid-like density and relatively small compressibility are assumed. A typical application is the prediction of the equilibrium between an aqueous phase (brine) and one or more solid phases (minerals). (ACR)
Pitzer, K.S.
Walking solutions in the string background dual to N=1 SQCD-like theories
A new solution in the string background dual to N=1 SQCD-like theories is presented. The gauge coupling in this solution has walking property. The Wilson loop calculations show that quark anti-quark potential makes phase transitions. Additionally the effect of flavours on other solutions in this background is investigated by considering some unflavoured solutions and perturbing them with small parameter x=(N{sub f})/(N{sub c})
Guerdogan, Omer Can [Istanbul Teknik Universitesi Fizik Boeuemue, 34469 Maslak Istanbul (Turkey)], E-mail: email@example.com
Sensitivity to the Single Production of Vector-Like Quarks at an Upgraded Large Hadron Collider
In this note we consider the sensitivity of the Large Hadron Collider (LHC) to the single production of new heavy vector-like quarks. We consider a model with large mixing with the standard model top quark with electroweak production of single heavy top quarks. We consider center of mass energies of 14, 33, and 100 TeV with various pileup scenarios and present the expected sensitivity and exclusion limits.
Tim Andeen; Clare Bernard; Kevin Black; Taylor Childres; Lidia Dell'Asta; Natascia Vignaroli
Horizon Mechanics and Asymptotic Symmetries with a Immirzi-like Parameter in 2+1 Dimensions
Starting with a generalized theory of 2+1 gravity containing an Immirzi like parameter, we derive the modified laws of black hole mechanics using the formalism of weak isolated horizons. Definitions of horizon mass and angular momentum emerge naturally in this framework. We further go on to analyze the asymptotic symmetries, as first discussed by Brown and Henneaux, and analyze their implications in a completely covariant phase space framework.
Rudranil Basu; Ayan Chatterjee
Your Computer Would Like a Little Sleep, Too | Department of Energy
Your Computer Would Like a Little Sleep, Too Your Computer Would Like a Little Sleep, Too Your Computer Would Like a Little Sleep, Too April 2, 2012 - 5:41pm Addthis Elizabeth Spencer Communicator, National Renewable Energy Laboratory I'm in the market for a new computer right now, so I've been doing a bit of research. While looking around, I ran into this page about computers on the ENERGY STAR website. I thought I'd share! I had a little fun with the table at the bottom of the "Overview" tab, which talked about how much money you'd save if you activated power management tools on your computer. It's not the most detailed chart, and I wish I knew where their actual data was so I could look at it... But at its heart, it appears to say that if you leave your computer on every night and weekend and started using power management, you'd save $20 a year in energy
Who Will More Likely Buy PHEV: A Detailed Market Segmentation Analysis
Understanding the diverse PHEV purchase behaviors among prospective new car buyers is key for designing efficient and effective policies for promoting new energy vehicle technologies. The ORNL MA3T model developed for the U.S. Department of Energy is described and used to project PHEV purchase probabilities by different consumers. MA3T disaggregates the U.S. household vehicle market into 1458 consumer segments based on region, residential area, driver type, technology attitude, home charging availability and work charging availability and is calibrated to the EIA s Annual Energy Outlook. Simulation results from MA3T are used to identify the more likely PHEV buyers and provide explanations. It is observed that consumers who have home charging, drive more frequently and live in urban area are more likely to buy a PHEV. Early adopters are projected to be more likely PHEV buyers in the early market, but the PHEV purchase probability by the late majority consumer can increase over time when PHEV gradually becomes a familiar product. Copyright Form of EVS25.
Lin, Zhenhong [ORNL; Greene, David L [ORNL
Characterization of Rhizoctonia solani and Rhizoctonia-like Fungi infecting Vegetables in New York and their Pathogenicity to Corn .
??Vegetable growers in New York have recently observed that the corn rotation is no longer effective in suppressing diseases caused by Rhizoctonia solani and Rhizoctonia-like� (more)
Ohkura, Mana
Angular momentum conservation and torsional oscillations in the Sun and solar-like stars
The solar torsional oscillations, i.e., the perturbations of the angular velocity of rotation associated with the eleven-year activity cycle, are a manifestation of the interaction among the interior magnetic fields, amplified and modulated by the solar dynamo, and rotation, meridional flow and turbulent thermal transport. Therefore, they can be used, at least in principle, to put constraints on that interaction. Similar phenomena are expected to be observed in solar-like stars and can be modelled to shed light on analogous interactions in different environments. The source of the torsional oscillations is investigated by means of a model for the angular momentum transport within the convection zone. A description of the torsional oscillations is introduced, based on an analytical solution of the angular momentum equation in the mean-field approach. It provides information on the intensity and location of the torques producing the redistribution of the angular momentum within the convection zone of the Sun along the activity cycle. The method can be extended to solar-like stars for which some information on the time-dependence of the differential rotation is becoming available. Illustrative applications to the Sun and solar-like stars are presented. Under the hypothesis that the solar torsional oscillations are due to the mean-field Lorentz force, the mean amplitude of the Maxwell stresses and the phase relationship between poloidal and toroidal field components are obtained. Our preliminary results show the capability of the proposed approach to constrain the amplitude, phase and location of the perturbations leading to the observed torsional oscillations.
Antonino F. Lanza
Core-softened Fluids, Water-like Anomalies and the Liquid-Liquid Critical Points
Molecular dynamics simulations are used to examine the relationship between water-like anomalies and the liquid-liquid critical point in a family of model fluids with multi-Gaussian, core-softened pair interactions. The core-softened pair interactions have two length scales, such that the longer length scale associated with a shallow, attractive well is kept constant while the shorter length scale associated with the repulsive shoulder is varied from an inflexion point to a minimum of progressively increasing depth. As the shoulder well depth increases, the pressure required to form the high density liquid decreases and the temperature up to which the high-density liquid is stable increases, resulting in the shift of the liquid-liquid critical point to much lower pressures and higher temperatures. The pair correlation entropy is computed to show that the excess entropy anomaly diminishes when the shoulder well depth increases. Excess entropy scaling of diffusivity in this class of fluids is demonstrated, showing that decreasing strength of the excess entropy anomaly with increasing shoulder depth results in the progressive loss of water-like thermodynamic, structural and transport anomalies. Instantaneous normal mode analysis was used to index the overall curvature distribution of the fluid and the fraction of imaginary frequency modes was shown to correlate well with the anomalous behaviour of the diffusivity and the pair correlation entropy. The results suggest in the case of core-softened potentials, in addition to the presence of two length scales, energetic and entropic effects associated with local minima and curvatures of the pair interaction play an important role in determining the presence of water-like anomalies and the liquid-liquid phase transition.
Evy Salcedo; Alan B. de Oliveira; Ney M. Barraz Jr; Charusita Chakravarty; Marcia C. Barbosa
In order to understand the climate on terrestrial planets orbiting nearby Sun-like stars, one would like to know their thermal inertia. We use a global climate model to simulate the thermal phase variations of Earth analogs and test whether these data could distinguish between planets with different heat storage and heat transport characteristics. In particular, we consider a temperate climate with polar ice caps (like the modern Earth) and a snowball state where the oceans are globally covered in ice. We first quantitatively study the periodic radiative forcing from, and climatic response to, rotation, obliquity, and eccentricity. Orbital eccentricity and seasonal changes in albedo cause variations in the global-mean absorbed flux. The responses of the two climates to these global seasons indicate that the temperate planet has 3 Multiplication-Sign the bulk heat capacity of the snowball planet due to the presence of liquid water oceans. The obliquity seasons in the temperate simulation are weaker than one would expect based on thermal inertia alone; this is due to cross-equatorial oceanic and atmospheric energy transport. Thermal inertia and cross-equatorial heat transport have qualitatively different effects on obliquity seasons, insofar as heat transport tends to reduce seasonal amplitude without inducing a phase lag. For an Earth-like planet, however, this effect is masked by the mixing of signals from low thermal inertia regions (sea ice and land) with that from high thermal inertia regions (oceans), which also produces a damped response with small phase lag. We then simulate thermal light curves as they would appear to a high-contrast imaging mission (TPF-I/Darwin). In order of importance to the present simulations, which use modern-Earth orbital parameters, the three drivers of thermal phase variations are (1) obliquity seasons, (2) diurnal cycle, and (3) global seasons. Obliquity seasons are the dominant source of phase variations for most viewing angles. A pole-on observer would measure peak-to-trough amplitudes of 13% and 47% for the temperate and snowball climates, respectively. Diurnal heating is important for equatorial observers ({approx}5% phase variations), because the obliquity effects cancel to first order from that vantage. Finally, we compare the prospects of optical versus thermal direct imaging missions for constraining the climate on exoplanets and conclude that while zero- and one-dimensional models are best served by thermal measurements, second-order models accounting for seasons and planetary thermal inertia would require both optical and thermal observations.
Cowan, Nicolas B. [Center for Interdisciplinary Exploration and Research in Astrophysics and Department of Physics and Astronomy, Northwestern University, 2131 Tech Drive, Evanston, IL 60208 (United States); Voigt, Aiko [Max Planck Institute for Meteorology, Bundesstr. 53, D-20146 Hamburg (Germany); Abbot, Dorian S., E-mail: firstname.lastname@example.com [Department of Geophysical Sciences, University of Chicago, 5734 South Ellis Avenue, Chicago, IL 60637 (United States)
Possible Diamond-Like Nanoscale Structures Induced by Slow Highly-Charged Ions on Graphite (HOPG)
The interaction between slow highly-charged ions (SHCI) of different charge states from an electron-beam ion trap and highly oriented pyrolytic graphite (HOPG) surfaces is studied in terms of modification of electronic states at single-ion impact nanosizeareas. Results are presented from AFM/STM analysis of the induced-surface topological features combined with Raman spectroscopy. I-V characteristics for a number of different impact regions were measured with STM and the results argue for possible formation of diamond-like nanoscale structures at the impact sites.
Sideras-Haddad, E.; Schenkel, T.; Shrivastava, S.; Makgato, T.; Batra, A.; Weis, C. D.; Persaud, A.; Erasmus, R.; Mwakikunga, B.
On a "Robust" A-like State of $^3He$ in Aerogel
The orbitally isotropic Equal Spin Pairing (ESP) state has been proposed in Ref. [1] as a candidate of an A-like phase of superfluid $^3He$ in aerogel environment. In order to preserve an exact isotropy of the state in the presence of the magnetic field the condensate with equal values of the amplitudes $\\Delta_{\\uparrow\\uparrow}$ and $\\Delta_{\\downarrow\\downarrow}$ was adopted. Experimentally it is established that this version does not reproduce observed splitting asymmetry of ESP phase in aerogel under the action of an external magnetic field. Here we explore the behavior of the quasi-isotropic version of an axiplanar ESP phase with $\\Delta_{\\uparrow\\uparrow}\
G. A. Baramidze; G. A. Kharadze
Three-dimensional visualization of forming Hepatitis C virus-like particles by electron-tomography
Hepatitis C virus infects almost 170 million people per year but its assembly pathway, architecture and the structures of its envelope proteins are poorly understood. Using electron tomography of plastic-embedded sections of insect cells, we have visualized the morphogenesis of recombinant Hepatitis C virus-like particles. Our data provide a three-dimensional sketch of viral assembly at the endoplasmic reticulum showing different budding stages and contiguity of buds. This latter phenomenon could play an important role during the assembly of wt-HCV and explain the size-heterogeneity of its particles.
Badia-Martinez, Daniel; Peralta, Bibiana [Structural Biology Unit, CIC bioGUNE, CIBERehd, 48160 Derio (Spain)] [Structural Biology Unit, CIC bioGUNE, CIBERehd, 48160 Derio (Spain); Andres, German; Guerra, Milagros [Electron Microscopy Unit, Centro de Biologia Molecular Severo Ochoa, CSIC-UAM, Campus Cantoblanco, 28049 Madrid (Spain)] [Electron Microscopy Unit, Centro de Biologia Molecular Severo Ochoa, CSIC-UAM, Campus Cantoblanco, 28049 Madrid (Spain); Gil-Carton, David [Structural Biology Unit, CIC bioGUNE, CIBERehd, 48160 Derio (Spain)] [Structural Biology Unit, CIC bioGUNE, CIBERehd, 48160 Derio (Spain); Abrescia, Nicola G.A., E-mail: firstname.lastname@example.com [Structural Biology Unit, CIC bioGUNE, CIBERehd, 48160 Derio (Spain); IKERBASQUE, Basque Foundation for Science, 48011 Bilbao (Spain)
Search for solar hadronic axions produced by a bremsstrahlung-like process
We have searched for hadronic axions which may be produced in the Sun by a bremsstrahlung-like process, and observed in the HPGe detector by an axioelectric effect. A conservative upper limit on the hadronic axion mass m_a < 334 eV at 95% C.L. is obtained. Our experimental approach is based on the axion-electron coupling and it does not include the axion-nucleon coupling, which suffers from the large uncertainties related to the estimation of the flavor-singlet axial-vector matrix element.
D. Kekez; A. Ljubicic; Z. Krecak; M. Krcmar
Trauma exposure, PTSD and psychotic-like symptoms in post-conflict Timor Leste: an epidemiological survey
-like ideas. Br J Clin Psychol 2007, 46(Pt 2):187�201. 9. Freeman D, Fowler D: Routes to psychotic symptoms: trauma, anxiety and psychosis-like experiences. Psychiatry Res 2009, 169(2):107�112.10. Odenwald M, Hinkel H, Schauer E, Schauer M, Elbert T, Neuner F...
Soosay, Ian; Silove, Derrick; Bateman-Steel, Catherine; Steel, Zachary; Bebbington, Paul; Jones, Peter B; Chey, Tien; Ivancic, Lorraine; Marnane, Claire
Comparative analysis of GT14/GT14-like family genes in Arabidopsis, Oryza, Populus, Sorghum and Vitis
Glycosyltransferase family14 (GT14) belongs to the glycosyltransferase (GT) superfamily that plays important roles in the biosynthesis of cell walls, the most abundant source of cellulosic biomass for bioethanol production. It has been hypothesized that DUF266 proteins are a new class of GTs related to GT14. In this study, we identified 62 GT14 and 106 DUF266 genes (named GT14-like herein) in Arabidopsis, Oryza, Populus, Sorghum and Vitis. Our phylogenetic analysis separated GT14 and GT14-like genes into two distinct clades, which were further divided into eight and five groups, respectively. Similarities in protein domain, 3D structure and gene expression were uncovered between the two phylogenetic clades, supporting the hypothesis that GT14 and GT14-like genes belong to one family. Therefore, we proposed a new family name, GT14/GT14-like family that combines both subfamilies. Variation in gene expression and protein subcellular localization within the GT14-like subfamily were greater than those within the GT14 subfamily. One-half of the Arabidopsis and Populus GT14/GT14-like genes were found to be preferentially expressed in stem/xylem, indicating that they are likely involved in cell wall biosynthesis. This study provided new insights into the evolution and functional diversification of the GT14/GT14-like family genes.
Ye, Chuyu [ORNL; Li, Ting [ORNL; Tuskan, Gerald A [ORNL; Tschaplinski, Timothy J [ORNL; Yang, Xiaohan [ORNL
Free energy landscape of protein-like chains with discontinuous potentials Hanif Bayat Movahed, Ramses van Zon, and Jeremy Schofield
Free energy landscape of protein-like chains with discontinuous potentials Hanif Bayat Movahed://jcp.aip.org/about/rights_and_permissions #12;THE JOURNAL OF CHEMICAL PHYSICS 136, 245103 (2012) Free energy landscape of protein-like chains, and allow a natural definition of a configuration by considering which beads are bonded. Free ener- gies
Schofield, Jeremy
Hydrogen-like recombination x-ray laser experiments using a 20 picosecond laser pulse at the Nova facility
Hydrogen-like recombination X-ray lasers are currently under investigation as an alternative candidate to collisional pumped soft X-ray amplifiers. Efforts are being concentrated on the n = 3 to n = 2 transitions in H-like Mg and NaF. 5 refs., 1 fig.
Shephard, R.; Fields, D.; DaSilva, L.; Keane, C.; MacGowen, B.; Matthews, D.; Shimkaveg, G.; Stone, G.; Eder, D.; Osterheld, A.; Walling, R.; Young, B.K.F.; Fry, A.; Eckart, M.; Goldstein, W.; Stewart, R. (Lawrence Livermore National Lab., CA (USA)); Charatis, G.; Busch, G. (KMS Fusion, Inc., Ann Arbor, MI (USA))
Nonaqueous seeded growth of flower-like mixed-phase titania nanostructures for photocatalytic applications
A nonaqueous seeded-grown synthesis of three-dimensional TiO{sub 2} nanostructures in the benzyl alcohol reaction system was reported. The synthesis was simple, high-yield, and requires no structural directing or capping agents. It could be largely accelerated by applying microwave heating. The TiO{sub 2} nanostructures had a unique flower-like morphology and high surface area. Furthermore, the structural analyses suggested that the nanostructures had a non-uniform distribution of crystalline phases, with the inner part rich in anatase and the outer part rich in rutile. After heat treatments, the mixed-phase TiO{sub 2} nanostructures exhibited high photocatalytic activities for the photodegradation of methylene blue as compared to Degussa P25. The high photoactivities may be associated with the high surface area and the synergistic effect resulting from the anisotropic mixed-phase nanostructures. The results demonstrate the uniqueness of the nonaqueous seeded growth and the potential of the TiO{sub 2} nanostructures for practical applications. - Graphical abstract: Flower-like TiO{sub 2} nanostructures synthesized by a nonaqueous seeded growth without using any structural directing or capping agents.
Hsu, Y.-C.; Lin, H.-C.; Chen, C.-H.; Liao, Y.-T. [Department of Chemistry, National Tsing Hua University, Hsinchu 30013, Taiwan (China); Yang, C.-M., E-mail: email@example.com [Department of Chemistry, National Tsing Hua University, Hsinchu 30013, Taiwan (China)
A Light Supersymmetric Higgs Sector Hidden by a Standard Model-like Higgs
Extending the Higgs sector of the MSSM by triplets alleviates the little hierarchy problem and naturally allows for enhancements in the diphoton decay rate of the lightest CP-even Higgs h. In the present paper we analyze in detail the Higgs phenomenology of this theory with m_h~126 GeV. We mostly focus on a light Higgs sector where the pseudoscalar A, the next-to-lightest CP-even scalar H and the charged H^\\pm Higgses are naturally at the electroweak scale. It turns out that for any value m_A > m_h there is a parameter region at small tan(beta) where the CP-even Higgs sector appears at colliders as the SM one, except for loop-induced corrections. Notably the existence of this SM-like point, which is absent in the MSSM, is shared with supersymmetric theories where there are extra singlets. We also highlight a second parameter region at small m_A and small tan(beta) where the h signal strengths, diphoton channel included, are SM-like except those of bottoms and taus which can have at most a 10-15 % splitting. Improvements in the A and H^\\pm searches are worthwhile in order to discriminate this scenario from the SM.
Antonio Delgado; Germano Nardini; Mariano Quiros
Low cost, single crystal-like substrates for practical, high efficiency solar cells
It is well established that high efficiency (20%) solar cells can be routinely fabricated using single crystal photovoltaic (PV) materials with low defect densities. Polycrystalline materials with small grain sizes and no crystallographic texture typically result in reduced efficiences. This has been ascribed primarily to the presence of grain boundaries and their effect on recombination processes. Furthermore, lack of crystallographic texture can result in a large variation in dopant concentrations which critically control the electronic properties of the material. Hence in order to reproducibly fabricate high efficiency solar cells a method which results in near single crystal material is desirable. Bulk single crystal growth of PV materials is cumbersome, expensive and difficult to scale up. We present here a possible route to achieve this if epitaxial growth of photovoltaic materials on rolling-assisted-biaxially textured-substrates (RABiTS) can be achieved. The RABiTS process uses well-established, industrially scaleable, thermomechanical processing to produce a biaxially textured or single-crystal-like metal substrate with large grains (50-100 {mu}m). This is followed by epitaxial growth of suitable buffer layers to yield chemically and structurally compatible surfaces for epitaxial growth of device materials. Using the RABiTS process it should be possible to economically fabricate single-crystal-like substrates of desired sizes. Epitaxial growth of photovoltaic devices on such substrates presents a possible route to obtaining low-cost, high performance solar cells.
Goyal, A.; Specht, E.D.; List, F.A. [and others
A protection system for the JET ITER-like wall based on imaging diagnostics
The new JET ITER-like wall (made of beryllium and tungsten) is more fragile than the former carbon fiber composite wall and requires active protection to prevent excessive heat loads on the plasma facing components (PFC). Analog CCD cameras operating in the near infrared wavelength are used to measure surface temperature of the PFCs. Region of interest (ROI) analysis is performed in real time and the maximum temperature measured in each ROI is sent to the vessel thermal map. The protection of the ITER-like wall system started in October 2011 and has already successfully led to a safe landing of the plasma when hot spots were observed on the Be main chamber PFCs. Divertor protection is more of a challenge due to dust deposits that often generate false hot spots. In this contribution we describe the camera, data capture and real time processing systems. We discuss the calibration strategy for the temperature measurements with cross validation with thermal IR cameras and bi-color pyrometers. Most importantly, we demonstrate that a protection system based on CCD cameras can work and show examples of hot spot detections that stop the plasma pulse. The limits of such a design and the associated constraints on the operations are also presented.
Arnoux, G.; Balboa, I.; Balshaw, N.; Beldishevski, M.; Cramp, S.; Felton, R.; Goodyear, A.; Horton, A.; Kinna, D.; McCullen, P.; Obrejan, K.; Patel, K.; Lomas, P. J.; Rimini, F.; Stamp, M.; Stephen, A.; Thomas, P. D.; Williams, J.; Wilson, J.; Zastrow, K.-D. [Euratom/CCFE Fusion Association, Culham Science Centre, Abingdon, Oxon OX14 3DB (United Kingdom); and others
�Structural Transformations in Ceramics: Perovskite-like Oxides and Group III, IV, and V Nitrides�
1 Overview of Results and their Significance Ceramic perovskite-like oxides with the general formula (A. A0. ...)(B. B0. ...)O3and titanium-based oxides are of great technological interest because of their large piezoelectric and dielectric response characteristics.[1] In doped and nanoengineered forms, titantium dioxide finds increasing application as an organic and hydrolytic photocatalyst. The binary main-group-metal nitride compounds have undergone recent advancements of in-situ heating technology in diamond anvil cells leading to a burst of experimental and theoretical interest. In our DOE proposal, we discussed our unique theoretical approach which applies ab initio electronic calculations in conjunction with systematic group-theoretical analysis of lattice distortions to study two representative phase transitions in ceramic materials: (1) displacive phase transitions in primarily titanium-based perovskite-like oxide ceramics, and (2) reconstructive phase transitions in main-group nitride ceramics. A sub area which we have explored in depth is doped titanium dioxide electrical/optical properties.
James P. Lewis (PI, former Co-PI), Dorian M. Hatch (Co-PI, former PI), and Harold T. Stokes (Co-PI)
Experimental studies of adiabatic flow boiling in fractal-like branching microchannels
Experimental results of adiabatic boiling of water flowing through a fractal-like branching microchannel network are presented and compared to numerical model simulations. The goal is to assess the ability of current pressure loss models applied to a bifurcating flow geometry. The fractal-like branching channel network is based on channel length and width ratios between adjacent branching levels of 2{sup -1/2}. There are four branching sections for a total flow length of 18 mm, a channel height of 150 {mu}m and a terminal channel width of 100 {mu}m. The channels were Deep Reactive Ion Etched (DRIE) into a silicon disk. A Pyrex disk was anodically bonded to the silicon to form the channel top to allow visualization of the flow within the channels. The flow rates ranged from 100 to 225 g/min and the inlet subcooling levels varied from 0.5 to 6 C. Pressure drop along the flow network and time averaged void fraction in each branching level were measured for each of the test conditions. The measured pressure drop ranged from 20 to 90 kPa, and the measured void fraction ranged from 0.3 to 0.9. The measured pressure drop results agree well with separated flow model predictions accounting for the varying flow geometry. The measured void fraction results followed the same trends as the model; however, the scatter in the experimental results is rather large. (author)
Daniels, Brian J.; Liburdy, James A.; Pence, Deborah V. [Mechanical Engineering, Oregon State University, Corvallis, OR 97330 (United States)
Free Energy Landscape of Protein-like Chains with Discontinuous Potentials
In this article the configurational space of two simple protein models consisting of polymers composed of a periodic sequence of four different kinds of monomers is studied as a function of temperature. In the protein models, hydrogen bond interactions, electrostatic repulsion, and covalent bond vibrations are modeled by discontinuous step, shoulder and square-well potentials, respectively. The protein-like chains exhibit a secondary alpha helix structure in their folded states at low temperatures, and allow a natural definition of a configuration by considering which beads are bonded. Free energies and entropies of configurations are computed using the parallel tempering method in combination with hybrid Monte Carlo sampling of the canonical ensemble of the discontinuous potential system. The probability of observing the most common configuration is used to analyze the nature of the free energy landscape, and it is found that the model with the least number of possible bonds exhibits a funnel-like free energy landscape at low enough temperature for chains with fewer than 30 beads. For longer proteins, the landscape consists of several minima, where the configuration with the lowest free energy changes significantly by lowering the temperature and the probability of observing the most common configuration never approaches one due to the degeneracy of the lowest accessible potential energy.
Hanif Bayat Movahed; Ramses van Zon; Jeremy Schofield
On a �Robust � A-like State of 3 He in Aerogel
The orbitally isotropic Equal Spin Pairing (ESP) state has been proposed in Ref. [1] as a candidate of an A-like phase of superfluid 3 He in aerogel environment. In order to preserve an exact isotropy of the state in the presence of the magnetic field the condensate with equal values of the amplitudes ?? ? and ?? ? was adopted. Experimentally it is established that this version does not reproduce observed splitting asymmetry of ESP phase in aerogel under the action of an external magnetic field. Here we explore the behavior of the quasi-isotropic version of an axiplanar ESP phase with ?? ? ? = ?? ? and show that for this state the splitting asymmetry ratio could be reconciled with experimental observations. In the past decade a problem of the structure of ordered (superfluid) states of liquid 3 He placed in a disordered medium (aerogel) has attached much attention. Recently it was pointed out in [1] that the A-like phase in aerogel, which undoubtedly belongs to an ESP category of spin-triplet condensates, should be different from an axially anisotropic ABM state because the presence of a spatial disorder lifts the degeneracy of this phase with respect to the orientation of orbital anisotropy axes � l, thus preventing the establishment of 1 a true long-range order (see, also Ref.[2]). In Ref.[1] it has been proposed to start from ESP order parameter
A photon-like wavepacket with quantised properties based on classical Maxwell's equations
A photon-like wavepacket based on novel solutions of Maxwell's equations is proposed. It is believed to be the first 'classical' model that contains so many of the accepted quantum features. In this new work, novel solutions to Maxwell's classical equations in dispersive guides are considered where local helical twists with an arbitrary angular frequency W modulate a classical mode (angular frequency w, group velocity vg). The modal field patterns are unchanged, apart from the twist, provided that the helical velocity vh equals vg. Pairs of resonating retarded and advanced waves with modal and helical frequencies (w,W) and (w,-W)respectively, trap one temporal period of the underlying classical mode forming a photon-like packet provided W = (M+1/2)w: 'Schrodinger' frequencies. This theory supports experimental evidence that the photon velocity does not change with M in dispersive systems. Promotion and demotion increase or decrease the helical frequencies in units of w. An energy of interaction between retarded and advanced waves in the wave-packet is also proportional to these helical frequencies W = (M+1/2)w similar to Planck's law. Group velocity and polarisation are unaffected by the value of M. Advanced waves enable phase and polarisation to be predicted along all future paths and may help to explain the outcomes of experiments on delayed-choice interference and entanglement, without causality being violated.
John E. Carroll
Design, manufacture and initial operation of the beryllium components of the JET ITER-like wall
The aim of the JET ITER-like Wall Project was to provide JET with the plasma facing material combination now selected for the DT phase of ITER (bulk beryllium main chamber limiters and a full tungsten divertor) and, in conjunction with the upgraded neutral beam heating system, to achieve ITER relevant conditions. The design of the bulk Be plasma facing components had to be compatible with increased heating power and pulse length, as well as to reuse the existing tile supports originally designed to cope with disruption loads from carbon based tiles and be installed by remote handling. Risk reduction measures (prototypes, jigs, etc) were implemented to maximize efficiency during the shutdown. However, a large number of clashes with existing components not fully captured by the configuration model occurred. Restarting the plasma on the ITER-like Wall proved much easier than for the carbon wall and no deconditioning by disruptions was observed. Disruptions have been more threatening than expected due to the redu...
Riccardo, V; Matthews, G F; Nunes, I; Thompson, V; Villedieu, E; Contributors, JET EFDA
Radiative rates and electron impact excitation rate coefficients for Ne-like selenium, Se XXV
In this article we report calculations of energy levels, radiative rates, electron impact collision strengths, and effective collision strengths for transitions among the 241 fine-structure levels arising from 2l{sup 8} and 2l{sup 7}n{sup '}l{sup '} (n{sup '{241 levels. The effective collision strengths are reported for all 28920 transitions among the 241 levels over a wide temperature range up to 10 keV. To assess the reliability and accuracy of the present collisional data, we have performed a 27-state close-coupling calculation, employing the Dirac R-matrix theory. The results from the close-coupling calculation and the independent-process calculation for the identical target states are found to be in good agreement. - Highlights: {yields} Radiative and collisional atomic data are presented for the lowest 241 fine-structure levels in Ne-like Se. {yields} Calculations are performed using the FAC package. {yields} Resonances enhance significantly a large amount of transitions. {yields} Radiative damping effects are significant for many transitions. {yields} Close-coupling effects are small in Ne-like Se.
Wang, K.; Chen, C.Y., E-mail: email@example.com; Huang, M.; Wang, Y.S.; Zou, Y.M.
Wolter-like high resolution x-ray imaging microscope for Rayleigh Taylor instabilities studies
In the context of the inertial confinement fusion, experiments have been carried out on the Phebus laser facility to study the Rayleigh-Taylor instabilities (RTIs) at the ablation front. Premodulated brominated plastic targets (25 {mu}m thick) with a modulation wavelength between 12 and 50 {mu}m were accelerated with a temporally shaped soft x-ray pulse emitted from a hohlraum with a maximum radiation temperature of about 115 eV. The RTI growth was measured by face-on radiography using a microscope coupled with an x-ray streak camera, which has spatial and temporal resolutions of about 5 {mu}m and 50 ps, respectively. The acceleration was derived from side-on velocity measurements. The microscope we have developed is a Wolter-like microscope which consists of two toroiedal mirrors. We will present the experimental and theoretical potentialities of this microscope: characterization with an x-ray generator and plasma laser x-ray source (Phebus facility) for two-dimensional (2D) and 1D time-resolved imaging studies. Spatial resolution of about 4 {mu}m was achieved in the 1-5 keV range. The Wolter-like constitutes an interesting device for laser plasma diagnostics and will be very useful in the Laser Megajoules experiments conducted with more powerful lasers.
Troussel, Ph.; Meyer, B.; Reverdin, R.; Angelier, B.; Lidove, G.; Salvatore, P.; Richard, A. [Commissariat a l'Energie Atomique, DAM-Ile de France, BP 12, 91680 Bruyeres-les-Chatel (France); Commissariat a l'Energie Atomique, Saclay 91191 (France); Commissariat a l'Energie Atomique, CESTA, BP2, 33114 Le Barp (France)
Production of charged heavy quarkonium-like states at the LHC and the Tevatron
We study prompt hadroproduction of the charged bottomonium-like states $Z_b^\\pm (10610)$ and $Z_b^\\pm (10650)$, and the charged charmonium-like states $Z_c^\\pm (3900)$ and $Z_c^\\pm (4020)$, at the Tevatron and the LHC, provided that these states are $S$-wave hadronic molecules. Using two Monte Carlo event generators, Herwig and Pythia, to simulate the production of heavy meson pairs, we derive an order-of-magnitude estimate of the production rates for these four particles. Our estimates yield a cross section at the nb level for the $Z_b(10610)$ and $Z_b(10650)$. The results for the $Z_c(3900)$ and $Z_c(4020)$ are larger by a factor of 20-30. These cross sections are large enough to be observed, and measurements at hadron colliders in the future will supplement the study using electron-positron collisions, and therefore allow to explore the mysterious nature of these exotic states.
Feng-Kun Guo; Ulf-G. Mei�ner; Wei Wang
Mechanical Design and Evaluation of the MP-11-Like Wire Scanner Prototype
A wire scanner (WS) is a linearly actuated diagnostic device that uses fiber wires (such as Tungsten or Silicon Carbide) to obtain the position and intensity profile of the proton beam at the Los Alamos Neutron Science Center (LANSCE) particle accelerator. LANSCE will be installing approximately 86 new WS in the near future as part of the LANSCE Risk Mitigation project. These 86 new WS include the replacement of many current WS and some newly added to the current linear accelerator and other beam lines. The reason for the replacement and addition of WS is that many of the existing actuators have parts that are no longer readily available and are difficult to find, thus making maintenance very difficult. One of the main goals is to construct the new WS with as many commercially-available-off-the-shelf components as possible. In addition, faster beam scans (both mechanically and in term of data acquisition) are desired for better operation of the accelerator. This document outlines the mechanical design of the new MP-11-like WS prototype and compares it to a previously built and tested SNS-like WS prototype.
Rodriguez Esparza, Sergio [Los Alamos National Laboratory; Sedillo, James Daniel [Los Alamos National Laboratory; Maestas, Alfred J. [Los Alamos National Laboratory; Gilpatrick, John D. [Los Alamos National Laboratory; Smith, Brian G. [Los Alamos National Laboratory; Raybun, Joseph L. [Los Alamos National Laboratory; Martinez, Jason P. [Los Alamos National Laboratory; Sattler, F. D. [Los Alamos National Laboratory; Gruchalla, Michael E. [Los Alamos National Laboratory
Network-like propagation of cell-level stress in random foams
Quasistatic simple shearing flow of random monodisperse soap froth is investigated by analyzing Surface Evolver simulations of spatially periodic foams. Elastic-plastic behavior is caused by irreversible topological rearrangements (T1s) that occur when Plateau's laws are violated; the first T1s occur at the elastic limit and at large strains frequent cascades of T1s, composed of one or more individual T1s, sustain the yield-stress plateau. The stress and shape anisotropy of individual cells is quantified by $Q$, a scalar measure derived from the interface tensor that gauges each cell's contribution to the global stress. During each T1 cascade, the connected set of cells with decreasing $Q$, called the \\textit{stress release domain}, is network-like and highly non-local. Geometrically, the network-like nature of the stress release domains is corroborated through morphological analysis using the Euler characteristic. The stress release domain is distinctly different from the set of cells that change topology during a T1 cascade. Our results highlight the unique rheological behavior of foams, where complex large-scale cooperative rearrangements of foam cells are observed as a consequence of distinctly local events.
Myfanwy E. Evans; Andrew M. Kraynik; Douglas A. Reinelt; Klaus Mecke; Gerd E. Schr�der-Turk
Towards the Final State of Spherical Gravitational Collapse and Likely Source of Gamma Ray Bursts
We invoke the global properties of the actual GTR field equations for spherical collapse to directly show that the condition for formation of trapped surfaces, 2GM/R >1 is not allowed by GTR. And therefore all singularity theorems based on the assumption of formation of trapped surfaces are invalidated! Our conclusion is in perfect agreement with Einstein's intuitive idea that a Sch. like surface can not occur in reality. Further as singularity is approached R ->0, in order that 2GM/R 0! Harrison, et al. had also pointed out that collapse should come to a decisive end with M=0. This is possible in GTR if the fluid radiates its entire original mass-energy during the relentless graviatational contraction process, Q->M c^2! Since the actual efficiency for gamma ray production by the relevant blast wave may hardly exceed 10-20% and there could be a stronger (undetected) nu-anti-nu burst precding GRBs, the actual energy released for GRB 990123, even accounting for probable weak beaming, or for GRB 971214 (unbeamed) could be ~10^{54-55} erg. And such energy release may not be properly accountable without realizing that trapped surfaces are indeed not formed. All authors concerned with this subject, and particularly those, who would like to differ with our derivation are requested to send their criticism either directly or express the same openly for a healthy scientific discussion.
Abhas Mitra
The place of the Sun among the Sun-like stars
Context. Monitoring of the photometric and chromospheric HK emission data series of stars similar to the Sun in age and average activity level showed that there is an empirical correlation between the average stellar chromospheric activity level and the photometric variability. In general, more active stars show larger photometric variability. Interestingly, the measurements and reconstructions of the solar irradiance show that the Sun is significantly less variable than indicated by the empirical relationship. Aims. We aim to identify possible reasons for the Sun to be currently outside of this relationship. Methods. We employed different scenarios of solar HK emission and irradiance variability and compared them with available time series of Sun-like stars. Results. We show that the position of the Sun on the diagram of photometric variability versus chromospheric activity changes with time. The present solar position is different from its temporal mean position as the satellite era of continuous solar irra...
Shapiro, A I; Cessateur, G; Rozanov, E
Random Access Game in Fading Channels with Capture: Equilibria and Braess-like Paradoxes
The Nash equilibrium point of the transmission probabilities in a slotted ALOHA system with selfish nodes is analyzed. The system consists of a finite number of heterogeneous nodes, each trying to minimize its average transmission probability (or power investment) selfishly while meeting its average throughput demand over the shared wireless channel to a common base station (BS). We use a game-theoretic approach to analyze the network under two reception models: one is called power capture, the other is called signal to interference plus noise ratio (SINR) capture. Contrary to one's intuition, we show analytically the occurrence of Braess-like paradoxes that the performance of the system may degrade when channel state information (CSI) is available at the nodes.
Hsu, Fu-Te
Burgers-like equation for spontaneous breakdown of the chiral symmetry in QCD
We link the spontaneous breakdown of chiral symmetry in Euclidean QCD to the collision of spectral shock waves in the vicinity of zero eigenvalue of Dirac operator. The mechanism, originating from complex Burger's-like equation for viscid, pressureless, one-dimensional flow of eigenvalues, is similar to recently observed weak-strong coupling phase transition in large $N_c$ Yang-Mills theory. The spectral viscosity is proportional to the inverse of the size of the random matrix that replaces the Dirac operator in the universal (ergodic) regime. We obtain the exact scaling function and critical exponents of the chiral phase transition for the averaged characteristic polynomial for $N_c \\ge3$ QCD. We reinterpret our results in terms of known properties of chiral random matrix models and lattice data.
Jean-Paul Blaizot; Maciej A. Nowak; Piotr Warcho?
Optimization of two- and three-link snake-like locomotion
We analyze two- and three-link planar snake-like locomotion and optimize the motion for efficiency. The locomoting system consists of two or three identical inextensible links connected via hinge joints, and the angles between the links are actuated as prescribed periodic functions of time. An essential feature of snake locomotion is frictional anisotropy: the forward, backward and transverse coefficients of friction are different. The dynamics are studied analytically and numerically for small and large amplitudes of the internal angles. Efficiency is defined as the ratio between distance traveled and the energy expended within one period, i.e. the inverse of the cost of locomotion. The optimal set of coefficients of friction to maximize efficiency consists of a large backward coefficient of friction and a small transverse coefficient of friction, compared to the forward coefficient of friction. For the two-link case with a symmetrical motion, efficiency is maximized when the internal angle amplitude is appr...
Jing, Fangxu
Multiple receptor-like protein tyrosine phosphatases in the form of chondroitin sulfate proteoglycan. FEBS Lett
Abstract. Pleiotrophin/heparin-binding growth-associated molecule (HB-GAM) is a specific ligand of protein tyrosine phosphatase ? (PTP?)/receptor-like protein tyrosine phosphatase ? (RPTP?) expressed in the brain as a chondroitin sulfate proteoglycan. Pleiotrophin and PTP ? isoforms are localized along the radial glial fibers, a scaffold for neuronal migration, suggesting that these molecules are involved in migratory processes of neurons during brain development. In this study, we examined the roles of pleiotrophin-PTP ? interaction in the neuronal migration using cell migration assay systems with glass fibers and Boyden chambers. Pleiotrophin and poly-L-lysine coated on the substratums stimulated cell migration of cortical neurons, while laminin, fibronectin, and tenascin exerted almost no effect.
Nobuaki Maeda; Masaharu Noda
Glass-like phonon scattering from a spontaneous nanostructure in AgSbTe2
Materials with very low thermal conductivity are of high interest for both thermoelectric and optical phase-change applications. Synthetic nanostructuring is most promising to suppress thermal conductivity by scattering phonons, but challenges remain in producing bulk samples. We show that in crystalline AgSbTe2, a spontaneously-forming nanostructure leads to a suppression of thermal conductivity to a glass-like level. Our mappings of phonon mean-free-paths provide a novel bottom- up microscopic account of thermal conductivity, and also reveal intrinsic anisotropies associated with the nanostructure. Ground-state degeneracy in AgSbTe2 leads to the natural formation of nanoscale domains with different orderings on the cation sublattice, and correlated atomic displacements, which efficiently scatter phonons. This mechanism is general and points to a new avenue in nano- scale engineering of materials, to achieve low thermal conductivities for efficient thermoelectric converters and phase-change memory devices.
Abernathy, Douglas L [ORNL; Ehlers, Georg [ORNL; Huq, Ashfia [ORNL; Ma, Jie [ORNL; May, Andrew F [ORNL; McGuire, Michael A [ORNL; Sales, Brian C [ORNL; Delaire, Olivier A [ORNL; Hong, Tao [ORNL; Tian, Wei [ORNL
Upgrade of the infrared camera diagnostics for the JET ITER-like wall divertor
For the new ITER-like wall at JET, two new infrared diagnostics (KL9B, KL3B) have been installed. These diagnostics can operate between 3.5 and 5 {mu}m and up to sampling frequencies of {approx}20 kHz. KL9B and KL3B image the horizontal and vertical tiles of the divertor. The divertor tiles are tungsten coated carbon fiber composite except the central tile which is bulk tungsten and consists of lamella segments. The thermal emission between lamellae affects the surface temperature measurement and therefore KL9A has been upgraded to achieve a higher spatial resolution (by a factor of 2). A technical description of KL9A, KL9B, and KL3B and cross correlation with a near infrared camera and a two-color pyrometer is presented.
Balboa, I.; Arnoux, G.; Kinna, D.; Thomas, P. D. [EURATOM/CCFE Fusion Association, Culham Science Centre, Abingdon, OX14 3DB (United Kingdom); Eich, T.; Sieglin, B.; Devaux, S.; Zeidner, W. [Max-Planck-IPP, EURATOM Association, D-85748 Garching (Germany); Morlock, C.; Kruezi, U.; Sergienko, G.; Rack, M. [Institut fuer Energie und Klimaforschung Plasmaphysik, Forschungszentrum Juelich GmbH, EURATOM Association FZJ, D-52425 Juelich (Germany); Collaboration: JET EFDA Contributors
Screw Photon-Like (3+1)-Solitons in Extended Electrodynamics
This paper aims to present explicit photon-like (3+1) spatially finite soliton solutions of screw type to the vacuum field equations of Extended Electrodynamics (EED) in relativistic formulation. We begin with emphasizing the need for spatially finite soliton modelling of microobjects. Then we briefly comment the properties of solitons and photons and recall some facts from EED. Making use of the localizing functions from differential topology (used in the partition of unity) we explicitly construct spatially finite screw solutions. Further a new description of the spin momentum inside EED, based on the notion for energy-momentum exchange between $F$ and $*F$, isintroduced and used to compute the integral spin momentum of a screw soliton. The consistency between the spatial and time periodicity naturally leads to a particular relation between the longitudinal and transverse sizes of the screw solution, namely, it is equal to $\\pi$. The Planck's formula $E=h\
Donev, S
Frobenius Curvature, Electromagnetic Strain and Description of Photon-like Objects
This paper aims to present a general idea for description of spatially finite physical objects with a consistent nontrivial translational-rotational dynamical structure and evolution as a whole, making use of the mathematical concepts and structures connected with the Frobenius integrability/nonintegrability theorems and electromagnetic strain quantities. The idea is based on consideration of {\\it nonintegrable} subdistributions of some appropriate completely integrable distribution (differential system) on a manifold and then to make use of the corresponding curvatures and correspondingly directed strains as measures of interaction, i.e. of energy-momentum exchange among the physical subsystems mathematically represented by the nonintegrable subdistributions. The concept of photon-like object is introduced and description (including lagrangian) of such objects in these terms is given.
Stoil Donev
DC-like Phase Space Manipulation and Particle Acceleration Using Chirped AC Fields
Waves in plasmas can accelerate particles that are resonant with the wave. A DC electric field also accelerates particles, but without a resonance discrimination, which makes the acceleration mechanism profoundly different. We investigate the effect on a Hamiltonian distribution of an accelerating potential waveform, which could, for example, represent the average ponderomotive effect of two counterpropagating electromagnetic waves. In particular, we examine the apparent DC-like time-asymptotic response of the distribution in regimes where the potential structure is accelerated adiabatically. A highly resonant population within the distribution is always present, and we characterize its nonadiabatic response during wave-particle resonance using an integral method in the noninertial reference frame moving with the wave. Finally, we show that in the limit of infinitely slow acceleration of the wave, these highly resonant particles disappear and the response
P.F. Schmit and N.J. Fisch
Radiation reaction and renormalization for a photon-like charged particle
A renormalization scheme which relies on energy-momentum and angular momentum balance equations is applied to the derivation of effective equation of motion for a massless point-like charge. Unlike the massive case, the rates of radiated energy-momentum and angular momentum tend to infinity whenever the source is accelerated. The external electromagnetic fields which do not change the velocity of the particle admit only its presence within the interaction area. The effective equation of motion is the equation on eigenvalues and eigenvectors of the electromagnetic tensor. The massless charges move along base line determined by the eigenvectors when the effective equation of motion possesses uniform solutions. It is interesting that the same solution arises in Rylov's model of magnetosphere of a rapidly rotating neutron star (pulsar).
Can Human-Like Bots Control Collective Mood: Agent-Based Simulations of Online Chats
Using agent-based modeling approach, in this paper, we study self-organized dynamics of interacting agents in the presence of chat Bots. Different Bots with tunable ``human-like'' attributes, which exchange emotional messages with agents, are considered, and collective emotional behavior of agents is quantitatively analysed. In particular, using detrended fractal analysis we determine persistent fluctuations and temporal correlations in time series of agent's activity and statistics of avalanches carrying emotional messages of agents when Bots favoring positive/negative affects are active. We determine the impact of Bots and identify parameters that can modulate it. Our analysis suggests that, by these measures, the emotional Bots induce collective emotion among interacting agents by suitably altering the fractal characteristics of the underlying stochastic process.Positive-emotion Bots are slightly more effective than the negative ones. Moreover, the Bots which are periodically alternating between positive a...
Tadic, Bosiljka
Modeling of the ITER-like wide-angle infrared thermography view of JET
Infrared (IR) thermography systems are mandatory to ensure safe plasma operation in fusion devices. However, IR measurements are made much more complicated in metallic environment because of the spurious contributions of the reflected fluxes. This paper presents a full predictive photonic simulation able to assess accurately the surface temperature measurement with classical IR thermography from a given plasma scenario and by taking into account the optical properties of PFCs materials. This simulation has been carried out the ITER-like wide angle infrared camera view of JET in comparing with experimental data. The consequences and the effects of the low emissivity and the bidirectional reflectivity distribution function used in the model for the metallic PFCs on the contribution of the reflected flux in the analysis are discussed.
Aumeunier, M.-H. [CEA, IRFM, F-13108 Saint-Paul-Lez-Durance (France); OPTIS, ZE de La Farlede, F-83078 Toulon Cedex 9 (France); Firdaouss, M.; Travere, J.-M.; Loarer, T.; Gauthier, E.; Martin, V. [CEA, IRFM, F-13108 Saint-Paul-Lez-Durance (France); Chabaud, D.; Humbert, E. [OPTIS, ZE de La Farlede, F-83078 Toulon Cedex 9 (France); Collaboration: JET-EFDA Contributors
The High-Z hydrogen-like atom: a model for polarized structure functions
The Dirac equation offers a precise analytical description of relativistic two-particle bound states, when one of the constituent is very heavy and radiative corrections are neglected. Looking at the high-Z hydrogen-like atom in the infinite momentum frame and treating the electron as a "parton", various properties usually attributed to the quark distributions in the nucleon are tested, in particular: Bj{\\o}rken scaling; charge, helicity, transversity and momentum sum rules; existence of the parton sea; Soffer inequality; correlation between spin and transverse momentum (Sivers and Boer-Mulders effects); transverse displacement of the center-of-charge and its connection with the magnetic moment. Deep inelastic experiments with photon or positron beams at MeV energies, analogous to DIS or Drell-Yan reactions, are considered.
X. Artru; K. Benhizia
Chaotic physics in ferroelectrics hints at brain-like computing | ornl.gov
Morgan McCorkle Morgan McCorkle Oak Ridge National Laboratory 865-574-7308 Chaotic physics in ferroelectrics hints at brain-like computing Unexpected behavior in ferroelectric materials explored by researchers at Oak Ridge National Laboratory supports a new approach to information storage and processing known as memcomputing. Unexpected behavior in ferroelectric materials explored by researchers at Oak Ridge National Laboratory supports a new approach to information storage and processing known as memcomputing. (hi-res image) OAK RIDGE, Tenn., Nov. 18, 2013-Unexpected behavior in ferroelectric materials explored by researchers at the Department of Energy's Oak Ridge National Laboratory supports a new approach to information storage and processing. Ferroelectric materials are known for their ability to spontaneously switch
Controllable synthesis of a novel hedgehog-like core/shell structure
A novel hedgehog-like core/shell structure, consisting of a high density of vertically aligned graphene sheets and a thin graphene shell/a copper core (VGs-GS/CC), has been synthesized via a simple one-step synthesis route using radio-frequency plasma-enhanced chemical vapor deposition (RF-PECVD). Scanning and transmission electron microscopy investigations show that the morphology of this core/shell material could be controlled by deposition time. For a short deposition time, only multilayer graphene shell tightly surrounds the copper particle, while as the deposition time is relative long, graphene sheets extend from the surface of GS/CC. The GS can protect CC particles from oxidation. The growth mechanism for the obtained GS/CC and VGs-GS/CC has been revealed. Compared to VGs, VGs-GS/CC material exhibits a better electron field emission property. This investigation opens a possibility for designing a core/shell structure of different carbon-metal hybrid materials for a wide variety of practical applications. - Graphical abstract: With increasing deposition time, graphene sheets extend from the surface of GS/CC, causing the multilayer graphene encapsulated copper to be converted into vertically aligned graphene sheets-graphene shell/copper core structure. Highlights: Black-Right-Pointing-Pointer A novel hedgehog-like core/shell structure has been synthesized. Black-Right-Pointing-Pointer The structure consists of vertical graphene sheets-graphene shell and copper core. Black-Right-Pointing-Pointer The morphology of VGs-GS/CC can be controlled by choosing a proper deposition time. Black-Right-Pointing-Pointer With increasing deposition time, graphene sheets extend from the surface of GS/CC. Black-Right-Pointing-Pointer VGs-GS/CC exhibits a better electron field emission property as compared with VGs.
Wang Shumin; Tian Hongwei; Pei Yanhui; Meng Qingnan; Chen Jianli; Wang Huan; Zeng Yi [Department of Materials Science, Key Laboratory of Mobile Materials, MOE, and State Key Laboratory of Superhard Materials, Jilin University, Changchun 130012 (China); Zheng Weitao, E-mail: email@example.com [Department of Materials Science, Key Laboratory of Mobile Materials, MOE, and State Key Laboratory of Superhard Materials, Jilin University, Changchun 130012 (China); Liu Yichun [Center for Advanced Optoelectronic Functional Materials Research and Key Laboratory for UV-Emitting Materials and Technology of Ministry of Education, Northeast Normal University, 5268 Renmin Street, Changchun 130024 (China)
AP Theory III: Cone-like Graded SUSY, Dynamic Dark Energy and the YM Millenium Problem
Artin Presentation Theory, (AP Theory), is a new, direct infusion, via pure braid theory, of discrete group theory, (i.e., symmetry in its purest form), into the theory of {\\it smooth} 4-manifolds, (i.e.,$(3+1)$-Quantum Gravity in its purest topological form), thus exhibiting the most basic, rigorous, universal, model-free intrinsic {\\it gauge-gravity} duality in a non-infinitesimal, cone-like graded, as holographic as possible, model-independent, non-perturbative, background-independent, parameter-free manner. {\\it In AP Theory even smooth topology change becomes gauge-theoretic, setting the stage for a rigorous smooth topological $(3+1)$-QFT of Dynamic Dark Energy.} In this theory, the rigid $\\infty$ of the dimension of classical Hilbert space is substituted by the dynamic $\\infty$ of the $\\infty$ generation at each stage of a cone-like graded subgroup of topology-changing transitions/interactions. As a corollary, the Cosmological Constant problem and the YM Millenium Mass Gap problem, two of the most perplexing main problems of modern physics, become rigorously, intimately mathematically related, by having the same qualitative {\\it dynamical} roots. Ultimately our main point is meta-mathematical, as far as modern physics is concerned: due to the discrete group-theoretic conceptual simplicity of the theory, with its group-theoretic 'Planckian membrane/discreteness' starting point, {\\it the fact that it is not just a mere mathematical model,} and all its properties above, any other {\\it mathematically rigorous} approach has to built on AP Theory and be topologically absorbed and enveloped by it.
H. E. Winkelnkemper
QU Car: a very high luminosity nova-like binary with a carbon-enriched companion
QU Car is listed in cataclysmic variable star catalogues as a nova-like variable. This little-studied, yet bright interacting binary is re-appraised here in the light of new high-quality ultraviolet (UV) interstellar line data obtained with STIS on board the Hubble Space Telescope. The detection of a component of interstellar absorption at a mean LSR velocity of $-$14 km s$^{-1}$ indicates that the distance to QU Car may be $\\sim$2 kpc or more -- a considerable increase on the previous lower-limiting distance of 500 pc. If so, the bolometric luminosity of QU Car could exceed $10^{37}$ ergs s$^{-1}$. This would place this binary in the luminosity domain occupied by known compact-binary supersoft X-ray sources. Even at a 500 pc, QU Car appears to be the most luminous nova-like variable known. New intermediate dispersion optical spectroscopy of QU Car spanning 3800--7000 \\AA is presented. These data yield the discovery that C{\\sc iv} $\\lambda\\lambda$5801,12 is present as an unusually prominent emission line in an otherwise low-contrast line spectrum. Using measurements of this and other lines in a recombination line analysis, it is shown that the C/He abundance as proxied by the n(C$^{4+}$)/n(He$^{2+}$) ratio may be as high as 0.06 (an order of magnitude higher than the solar ratio). Furthermore, the C/O abundance ratio is estimated to be greater than 1. These findings suggest that the companion in QU Car is a carbon star. If so, it would be the first example of a carbon star in such a binary. An early-type R star best matches the required abundance pattern and could escape detection at optical wavelengths provided the distance to QU Car is $\\sim$2 kpc or more.
J. E. Drew; L. E. Hartley; K. S. Long; J. van der Walt
Lateral Transfer of a Lectin-Like Antifreeze Protein Gene in Fishes
Fishes living in icy seawater are usually protected from freezing by endogenous antifreeze proteins (AFPs) that bind to ice crystals and stop them from growing. The scattered distribution of five highly diverse AFP types across phylogenetically disparate fish species is puzzling. The appearance of radically different AFPs in closely related species has been attributed to the rapid, independent evolution of these proteins in response to natural selection caused by sea level glaciations within the last 20 million years. In at least one instance the same type of simple repetitive AFP has independently originated in two distant species by convergent evolution. But, the isolated occurrence of three very similar type II AFPs in three distantly related species (herring, smelt and sea raven) cannot be explained by this mechanism. These globular, lectin-like AFPs have a unique disulfide-bonding pattern, and share up to 85 % identity in their amino acid sequences, with regions of even higher identity in their genes. A thorough search of current databases failed to find a homolog in any other species with greater than 40 % amino acid sequence identity. Consistent with this result, genomic Southern blots showed the lectin-like AFP gene was absent from all other fish species tested. The remarkable conservation of both intron and exon sequences, the lack of correlation between evolutionary distance and mutation rate, and the pattern of silent vs non-silent codon changes make it unlikely that the gene for this AFP pre-existed but was lost from most branches of the teleost radiation. We propose instead that lateral gene transfer has resulted in the occurrence of the type II AFPs in herring, smelt and sea raven and
Laurie A. Graham; Stephen C. Lougheed; K. Vanya Ewart; Peter L. Davies
Spatially resolved measurements of kinematics and flow-induced birefringence in worm-like micellar solutions undergoing high rate deformations
Worm-like micellar solutions are model non-Newtonian systems on account of their well understood linear viscoelastic behavior. Their high deformation rate, non-linear rheological response, however, remains inadequately ...
Ober, Thomas J. (Thomas Joseph)
Moist Static Energy Budget of MJO-like Disturbances in the Atmosphere of a Zonally Symmetric Aquaplanet
A Madden�Julian oscillation (MJO)-like spectral feature is observed in the time�space spectra of precipitation and column-integrated moist static energy (MSE) for a zonally symmetric aquaplanet simulated with Superparameterized Community ...
Joseph Allan Andersen; Zhiming Kuang
Predictability of a Mediterranean Tropical-Like Storm Downstream of the Extratropical Transition of Hurricane Helene (2006)
The extratropical transition (ET) of a tropical cyclone is known as a source of forecast uncertainty that can propagate far downstream. The present study focuses on the predictability of a Mediterranean tropical-like storm (Medicane) on 26 ...
Florian P. Pantillon; Jean-Pierre Chaboureau; Patrick J. Mascart; Christine Lac
16th International Conference in Quantum ChromoDynamics: Charmonium-like states at BaBar
We present new results on charmonium-like states from the BaBar experiment located at the PEP-II asymmetric energy $e^+e^-$ collider at the SLAC National Accelerator Laboratory.
Elisa Fioravanti
Structural and functional analyses of minimal phosphopeptides targeting the polo-box domain of polo-like kinase 1
Polo-like kinase-1 (Plk1) has a pivotal role in cell proliferation and is considered a potential target for anticancer therapy. The noncatalytic polo-box domain (PBD) of Plk1 forms a phosphoepitope binding module for ...
Yun, Sang-Moon
Nonhydrostatic, Three-Dimensional Perturbations to Balanced, Hurricane-like Vortices. Part I: Linearized Formulation, Stability, and Evolution
In this paper, the first of two parts, the dynamics of linearized perturbations to hurricane-like vortices are studied. Unlike previous studies, which are essentially two-dimensional or assume that the perturbations are quasi-balanced, the ...
David S. Nolan; Michael T. Montgomery
Physicochemical characterization of PEG-based comb-like amphiphilic copolymer structures for possible imaging and therapeutic applications
Comb-like copolymer structures, also known as graft/comb copolymers, have obtained a significant amount of attention in biomedical and industrial applications because of their unique compositional flexibility, which can ...
Dawson, Jin Zhou
Sandia National Laboratories is a multi-program laboratory managed and operated by Sandia Corporation, a wholly owned subsidiary of Lockheed Martin Corporation, for the U.S. Department of Energy's National Nuclear Security Administration under contract DE
's National Nuclear Security Administration under contract DE-AC04-94AL85000. This document has been undergone
's National Nuclear Security Administration under contract DE-AC04-94AL85000. This document has been reviewed
BPS-like bound and thermodynamics of the charged BTZ black hole
The charged Banados-Teitelboim-Zanelli (BTZ) black hole is plagued by several pathologies: (a) Divergent boundary terms are present in the action; hence, we have a divergent black-hole mass. (b) Once a finite, renormalized, mass M is defined, black-hole states exist for arbitrarily negative values of M. (c) There is no upper bound on the charge Q. We show that these pathological features are an artifact of the renormalization procedure. They can be completely removed by using an alternative renormalization scheme leading to a different definition M{sub 0} of the black-hole mass, which is the total energy inside the horizon. The new mass satisfies a BPS-like bound M{sub 0}{>=}({pi}/2)Q{sup 2}, and the heat capacity of the hole is positive. We also discuss the black-hole thermodynamics that arises when M{sub 0} is interpreted as the internal energy of the system. We show, using three independent approaches (black-hole thermodynamics, Einstein equations, and Euclidean action formulation), that M{sub 0} satisfies the first law if a term describing the mechanical work done by the electrostatic pressure is introduced.
Cadoni, Mariano; Monni, Cristina [Dipartimento di Fisica, Universita di Cagliari and INFN, Sezione di Cagliari, Cittadella Universitaria, 09042 Monserrato (Italy)
Selective electrodiffusion of zinc ions in a Zrt-, Irt-like protein, ZIPB
All living cells need zinc ions to support cell growth. Zrt-, Irt-like proteins (ZIPs) represent a major route for entry of zinc ions into cells, but how ZIPs promote zinc uptake has been unclear. Here we report the molecular characterization of ZIPB from Bordetella bronchiseptica, the first ZIP homolog to be purified and functionally reconstituted into proteoliposomes. Zinc flux through ZIPB was found to be nonsaturable and electrogenic, yielding membrane potentials as predicted by the Nernst equation. Conversely, membrane potentials drove zinc fluxes with a linear voltage-flux relationship. Direct measurements of metal uptake by inductively coupled plasma mass spectroscopy demonstrated that ZIPB is selective for two group 12 transition metal ions, Zn{sup 2+} and Cd{sup 2+}, whereas rejecting transition metal ions in groups 7 through 11. Our results provide the molecular basis for cellular zinc acquisition by a zinc-selective channel that exploits in vivo zinc concentration gradients to move zinc ions into the cytoplasm.
Lin, W.; Fu, D.; Chai, J.; Love, J.
Factors influencing the microwave pulse duration in a klystron-like relativistic backward wave oscillator
In this paper, we analyze the factors that affect the microwave pulse duration in a klystron-like relativistic backward wave oscillator (RBWO), including the diode voltage, the guiding magnetic field, the electron beam collector, the extraction cavity, and the gap between the electron beam and the slow wave structure (SWS). The results show that the microwave pulse duration increases with the diode voltage until breakdown occurs on the surface of the extraction cavity. The pulse duration at low guiding magnetic field is generally 5-10 ns smaller than that at high magnetic field due to the asymmetric electron emission and the larger energy spread of the electron beam. The electron beam collector can affect the microwave pulse duration significantly because of the anode plasma generated by bombardment of the electron beam on the collector surface. The introduction of the extraction cavity only slightly changes the pulse duration. The decrease of the gap between the electron beam and the SWS can increase the microwave pulse duration greatly.
Xiao Renzhen; Zhang Xiaowei; Zhang Ligang; Li Xiaoze; Zhang Lijun [National Key Laboratory of Science and Technology on High Power Microwave, Northwest Institute of Nuclear Technology, Xi'an 710024 (China)
Short-lived binary splits of an excited projectile-like fragment induced by transient deformation
Aligned fragment emission associated with peripheral and midperipheral dissipative collisions of {sup 124}Xe+{sup 124}Sn at E/A=50 MeV is examined. Binary decay of the excited projectile-like fragment (PLF*) is correlated with significant velocity damping from the projectile velocity. Both a forward emission component, attributed to standard statistical emission, and a backward component are observed. The backward component arises from both statistical and dynamical decay processes. This backward component manifests a strong alignment with the direction of the PLF* velocity and is found to depend sensitively on the atomic number of the light fragment, Z{sub L}, and the velocity of the PLF{sup *}. The yield of the backward component is significantly enhanced relative to the forward component. The composition of fragments emitted in the backward direction reveals that a correlation between alignment and neutron excess exists for fragments with Z<8. From the measured asymmetry of the angular distributions, the angular distribution for dynamical fragment emission is deduced. Comparison with a schematic one-dimensional Langevin model allows extraction of both the magnitude and the dependence on Z{sub L} of the transient initial deformation of the PLF*. Fragment emission times of the order of 0.25-1.5x10{sup -21} s are extracted.
McIntosh, A. B.; Hudan, S.; Black, J.; Mercier, D.; Metelko, C. J.; Yanez, R.; Souza, R. T. de; Chbihi, A.; Famiano, M.; Fregeau, M. O.; Gauthier, J.; Moisan, J.; Roy, R.; Bianchin, S.; Schwarz, C.; Trautmann, W. [Department of Chemistry and Indiana University Cyclotron Facility 2401 Milo B. Sampson Lane, Bloomington, Indiana 47405 (United States); GANIL, Caen (France); Western Michigan University, Kalamazoo, Michigan (United States); Universite Laval, Quebec (Canada); GSI Helmholtzzentrum GmbH, Planckstr. 1, D-64291 Darmstadt (Germany)
Measurement of adiabatic burning velocity in natural gas-like mixtures
Experimental measurements of the adiabatic burning velocities were carried out for natural gas-like mixtures burning in air over a range of equivalence ratios at atmospheric pressure. Effect of CO{sub 2} dilution up to 60%, N{sub 2} dilution up to 40% and 25% enrichment of ethane on burning velocity of methane-air flames were studied. Heat flux method with setup similar to that of [K.J. Bosschaart, L.P.H. de Goey, Detailed analysis of the heat flux method for measuring burning velocity, Combustion and Flame 132 (2003) 170-180] was used for measurement of burning velocities. Initially experiments were done for methane-air and ethane-air mixtures at various equivalence ratios and the results were in good agreement with published data in the literature. Computations were performed using PREMIX code with GRI 3.0 reaction mechanism for all the mixtures. Predicted flame structures were used to the explain the effect of N{sub 2} and CO{sub 2} dilution on burning velocity of methane-air flames. Peak burning velocity for CH{sub 4}/CO{sub 2}-air mixtures occur near to {phi} = 1.0. (author)
Ratna Kishore, V.; Duhan, Nipun; Ravi, M.R.; Ray, Anjan [Department of Mechanical Engineering, Indian Institute of Technology, Delhi, Hauz Khas, New Delhi 110 016 (India)
Evolution of M82-like starburst winds revisited: 3D radiative cooling hydrodynamical simulations
In this study we present three-dimensional radiative cooling hydrodynamical simulations of galactic winds generated particularly in M82-like starburst galaxies. We have considered intermittent winds induced by SNe explosions within super star clusters randomly distributed in the central region of the galaxy and were able to reproduce the observed M82 wind conditions with its complex morphological outflow structure. We have found that the environmental conditions in the disk in nearly recent past are crucial to determine whether the wind will develop a large scale rich filamentary structure, as in M82 wind, or not. Also, the numerical evolution of the SN ejecta have allowed us to obtain the abundance distribution over the first 3 kpc extension of the wind and we have found that the SNe explosions change significantly the metallicity only of the hot, low-density wind component. Moreover, we have found that the SN-driven wind transports to outside the disk large amounts of energy, momentum and gas, but the more ...
Melioli, C; Geraissate, F
Signatures of photon and axion-like particle mixing in the gamma-ray burst jet
Photons couple to Axion-Like Particles (ALPs) or more generally to any pseudo Nambu-Goldstone boson in the presence of an external electromagnetic field. Mixing between photons and ALPs in the strong magnetic field of a Gamma-Ray Burst (GRB) jet during the prompt emission phase can leave observable imprints on the gamma-ray polarization and spectrum. Mixing in the intergalactic medium is not expected to modify these signatures for ALP mass > 10^(-14) eV and/or for gamma ray emission. We also show that when the magnetic field orientation in the propagation region is perpendicular to the field orientation in the production region, the observed synchrotron spectrum becomes steeper than the theoretical prediction and as detected in a sizable fraction of GRB sample. Detection of the correlated polarization and spectral signatures from these steep-spectrum GRBs by gamma-ray polarimeters can be a very powerful probe to discover ALPs. Measurement of gamma-ray polarization from GRBs in general, with high statistics, can also be useful to search for ALPs.
Olga Mena; Soebur Razzaque; F. Villaescusa-Navarro
Method for loading lipid like vesicles with drugs of other chemicals
A method for accumulating drugs or other chemicals within synthetic, lipid-like vesicles by means of a pH gradient imposed on the vesicles just prior to use is described. The method is suited for accumulating molecules with basic or acid moieties which are permeable to the vesicles membranes in their uncharged form and for molecules that contain charge moieties that are hydrophobic ions and can therefore cross the vesicle membranes in their charged form. The method is advantageous over prior art methods for encapsulating biologically active materials within vesicles in that is achieves very high degrees of loading with simple procedures that are economical and require little technical expertise, furthermore kits which can be stored for prolonged periods prior to use without impairment of the capacity to achieve drug accumulation are described. A related application of the method consists of using this technology to detoxify animals that have been exposed to poisons with basic, weak acid or hydrophobic charge groups within their molecular structures.
Mehlhorn, Rolf Joachim (Richmond, CA)
Quantum entanglement for two electrons in the excited states of helium-like systems
The quantum entanglement for the two electrons in the excited states of the helium-like atom/ions is investigated using the two-electron wave functions constructed by the B-spline basis. As a measure of the spatial (electron-electron orbital) entanglement, the von Neumann entropy and linear entropy of the reduced density matrix are calculated for the 1s2s 1,3S excited states for systems with some selected Z values from Z=2 to Z=100. Results for the helium atom are compared with other available calculations. We have also investigated the entropies for these excited states when the nucleus charge is reduced from Z=2 to Z=1. At such a critical charge, all the singly-excited states of this system become unbound, and the linear entropies and the von Neumann entropies for the excited states are approaching 1/2 and 1, respectively, the limits for the entropies when one electron is bound to the nucleus, and the other being free.
Yen-Chang Lin; Yew Kam Ho
Lin, Yen-Chang
Ring1B Contains a Ubiquitin-Like Docking Module for Interaction with Cbx Proteins
Polycomb group (PcG) proteins are a special set of repressive transcription factors involved in epigenetic modifications of chromatin. They form two functionally distinct groups of catalytically active complexes: Polycomb repressive complex 1 (PRC1) and 2 (PRC2). The PRC1 complex is an important yet poorly characterized multiprotein histone ubiquitylation machine responsible for maintaining transcriptionally silent states of genes through histone H2A K119 modification. The Ring domain containing subunits of PRC1 also have substrate-targeting domains that interact with Cbx proteins, which have been implicated in chromatin and RNA binding. In this work, we present a high resolution structure of the C-terminal domain of Ring1B, revealing a variant ubiquitin-like fold with a distinct conserved surface region. On the basis of crystal structure and mutational analysis of this domain we show that the conserved surface is responsible for interaction with Cbx members of the PRC1 and homodimer formation. These data suggest a mechanism by which Ring1B serves as an adaptor that mediates binding between the members of the PRC1 complex and the nucleosome.
Bezsonova, Irina; Walker, John R.; Bacik, John P.; Duan, Shili; Dhe-Paganon, Sirano; Arrowsmith, Cheryl H.; (Toronto)
Characterization of Laccase-like Multicopper Oxidases (LMCOs) in Arabidopsis thaliana
Laccase-like multicopper oxidases (LMCOs) have repeatedly been associated with the process of lignification in plants, and previous work suggested that these enzymes might be acting as specific marker for highly localized, small-scale lignification events in tissues not typically thought of as lignified. However, plant LMCOs typically occur as members of gene families and different family members can display disparate enzyme activities and overlapping patterns of expression in bulk tissues. This study used reporter genes and knockout mutants to document the involvement of a specific Arabidopsis thaliana LMCO family member (At2g30210 ) in early root development, specifically with development of endodermal tissues. Expression of the gene product was found to be under the control of sucrose levels, but the gene also responded to fluctuations in salt concentrations. The expression patterns of this gene were consistent with its involvement in the formation of suberin in the Casparian strip of root endodermis. An additional LMCO (At5g58910) displayed a more generalized expression in the radicles emergent seedlings. Additional members of the Arabidopsis LMCO family (At2g29130, At5g01190, and At5g05390) were also investigated with reporter gene constructs and knockout mutants. Expression of these LMCOs was associated with lignifying xylem, and the genes had over-lapping expression. Single knockout mutants did not display obvious phenotypes, suggesting that the gene products might have degenerate functionality that could compensate for loss of a single LMCO function.
Jeffrey F.D. Dean
Light deflection in the post-linear gravitational field of bounded point-like masses
Light deflection in the post-linear gravitational field of two bounded point-like masses is treated. Both the light source and the observer are assumed to be located at infinity in an asymptotically flat space. The equations of light propagation are explicitly integrated to the second order in $G/c^2$. Some of the integrals are evaluated by making use of an expansion in powers of the ratio of the relative separation distance to the impact parameter $(r_{12}/\\xi)$. A discussion of which orders must be retained to be consistent with the expansion in terms of $G/c^2$ is given. It is shown that the expression obtained in this paper for the angle of light deflection is fully equivalent to the expression obtained by Kopeikin and Sch\\"afer up to the order given there. The deflection angle takes a particularly simple form for a light ray originally propagating orthogonal to the orbital plane of a binary with equal masses. Application of the formulae for the deflection angle to the double pulsar PSR J0737-3039 for an impact parameter five times greater than the relative separation distance of the binary's components shows that the corrections to the Epstein-Shapiro light deflection angle of about $10^{-6}$ arcsec lie between $10^{-7}$ and $10^{-8}$ arcsec.
Michael H. Br�gmann
Observations from the EUV Imaging Spectrometer (EIS) on board Hinode have revealed outflows and non-thermal line broadening in low intensity regions at the edges of active regions (ARs). We use data from Hinode's EIS, Solar Dynamic Observatory's Atmospheric Imaging Assembly and Helioseismic and Magnetic Imager, and the Transition Region and Coronal Explorer instrument to investigate the boundaries of arcade-like AR cores for NOAA ARs 11112, 10978, and 9077. A narrow, low intensity region that is observed at the core's periphery as a dark band shows outflows and increased spectral line broadening. This dark band is found to exist for days and appears between the bright coronal loop structures of different coronal topologies. We find a case where the dark band region is formed between the magnetic field from emerging flux and the field of the pre-existing flux. A magnetic field extrapolation indicates that this dark band is coincident with the spine lines or magnetic separatrices in the extrapolated field. This occurs over unipolar regions where the brightened coronal field is separated in connectivity and topology. This separation does not appear to be infinitesimal and an initial estimate of the minimum distance of separation is found to be Almost-Equal-To 1.5-3.5 Mm.
Scott, J. T.; Martens, P. C. H.; Tarr, L. [Department of Physics, Montana State University, Bozeman, MT 59717 (United States)
A new visible spectroscopy diagnostic for the JET ITER-like wall main chamber
In preparation for ITER, JET has been upgraded with a new ITER-like wall (ILW), whereby the main plasma facing components, previously of carbon, have been replaced by mainly Be in the main chamber and W in the divertor. As part of the many diagnostic enhancements, a new, survey, visible spectroscopy diagnostic has been installed for the characterization of the ILW. An array of eight lines-of-sight (LOS) view radially one of the two JET neutral beam shine through areas (W coated carbon fibre composite tiles) at the inner wall. In addition, one vertical LOS views the solid W tile at the outer divertor. The light emitted from the plasma is coupled to a series of compact overview spectrometers, with overall wavelength range of 380-960 nm and to one high resolution Echelle overview spectrometer covering the wavelength range 365-720 nm. The new survey diagnostic has been absolutely calibrated in situ by means of a radiometric light source placed inside the JET vessel in front of the whole optical path and operated by remote handling. The diagnostic is operated in every JET discharge, routinely monitoring photon fluxes from intrinsic and extrinsic impurities (e.g., Be, C, W, N, and Ne), molecules (e.g., BeD, D{sub 2}, ND) and main chamber and divertor recycling (typically D{alpha}, D{beta}, and D{gamma}). The paper presents a technical description of the diagnostic and first measurements during JET discharges.
Maggi, C. F. [Max-Planck-Institut fuer Plasmaphysik, EURATOM Association, D-85748 Garching (Germany); Brezinsek, S. [Forschungszentrum Juelich GmbH, EURATOM Association, D-52425 Juelich (Germany); Stamp, M. F.; Griph, S.; Heesterman, P.; Hogben, C.; Horton, A.; Meigs, A.; Studholme, W.; Zastrow, K.-D. [EURATOM/CCFE, Fusion Association, Culham Science Centre, Abingdon, OX14 3DB (United Kingdom); Morlock, C. [EFDA-CSU Garching, Boltzmannstrasse 2, 85748 Garching (Germany); Collaboration: JET-EFDA Contributors
Constraints on chameleons and axion-like particles from the GammeV experiment
We present the most recent results of both aspects of the GammeV experiment. The first aspect is a search for axion-like particles using a variable baseline, "light-shining-through-a-wall" technique. This search excludes the particle interpretation of the PVLAS signal with high confidence. The second aspect of the GammeV experiment is a search for chameleon particles, scalar particles which may be responsible for the dark energy of the universe. This is accomplished by looking for a characteristic afterglow signature from a "particle-in-a-jar" experiment whereby chameleon particles become trapped in a region with a high magnetic field and slowly decay into detectable photons. This is the first use of this experimental technique to probe for these particles. We place interesting limits on a limited range of general chameleon models. These limits are complimentary to other experiments, such as torsion pendulum experiments, which probe for forces that would result from new scalar particles.
Steffen, Jason H
We use the semi-analytic model ChemTreeN, coupled to cosmological N-body simulations, to explore how different galaxy formation histories can affect observational properties of Milky Way like galaxies' stellar halos and their satellite populations. Gaussian processes are used to generate model emulators that allow one to statistically estimate a desired set of model outputs at any location of a p-dimensional input parameter space. This enables one to explore the full input parameter space orders of magnitude faster than could be done otherwise. Using mock observational data sets generated by ChemTreeN itself, we show that it is possible to successfully recover the input parameter vectors used to generate the mock observables if the merger history of the host halo is known. However, our results indicate that for a given observational data set, the determination of 'best-fit' parameters is highly susceptible to the particular merger history of the host. Very different halo merger histories can reproduce the same observational data set, if the 'best-fit' parameters are allowed to vary from history to history. Thus, attempts to characterize the formation history of the Milky Way using these kind of techniques must be performed statistically, analyzing large samples of high-resolution N-body simulations.
Gomez, Facundo A.; O'Shea, Brian W. [Department of Physics and Astronomy, Michigan State University, East Lansing, MI 48824 (United States); Coleman-Smith, Christopher E. [Department of Physics, Duke University, Durham, NC 27708 (United States); Tumlinson, Jason [Space Telescope Science Institute, Baltimore, MD 21218 (United States); Wolpert, Robert L. [Department of Statistical Science, Duke University, Durham, NC 27708-0251 (United States)
Load partitioning in honycomb-like silicon carbide aluminum alloy composites.
A 50/50 vol.% Al/SiC composite was made via melt infiltration of an aluminum alloy into a porous beech wood-derived SiC preform. The honeycomb-like composite microstructure consisted of an interconnected SiC phase surrounding discrete Al 'fibers' aligned in the growth direction of the beech wood. High energy synchrotron X-ray diffraction was used to measure the volume averaged lattice strains in both the SiC and Al phases during in situ compressive loading up to an applied stress of -530MPa. Load transfer from the Al to the SiC was observed, and the Al yielded at an applied stress of above -213MPa. The elastic behavior of the composite was modeled with both an isostrain rule of mixtures calculation and variational bounds for the effective elastic modulus. Furthermore, calculations of the von Mises effective stress of the SiC and Al phases showed that the wood-derived SiC was a more effective reinforcement than either SiC particle- or whisker-reinforced composites.
Wikes, T. E.; Harder, B. J.; Almer, J. D.; Faber, K. T.; Northwestern Univ.
Magnetite and magnetite/silver core/shell nanoparticles with diluted magnet-like behavior
In the present work is reported the use of the biopolymer chitosan as template for the preparation of magnetite and magnetite/silver core/shell nanoparticles systems, following a two step procedure of magnetite nanoparticles in situ precipitation and subsequent silver ions reduction. The crystalline and morphological characteristics of both magnetite and magnetite/silver core/shell nanoparticles systems were analyzed by high resolution transmission electron microscopy (HRTEM) and nanobeam diffraction patterns (NBD). The results of these studies corroborate the core/shell morphology and the crystalline structure of the magnetite core and the silver shell. Moreover, magnetization temperature dependent, M(T), measurements show an unusual diluted magnetic behavior attributed to the dilution of the magnetic ordering in the magnetite and magnetite/silver core/shell nanoparticles systems. - Graphical abstract: Biopolymer chitosan was used as stabilization media to synthesize both magnetite and magnetite/silver core/shell nanoparticles. Results of HRTEM and NBD patterns confirm core/shell morphology of the obtained nanoparticles. It was found that the composites show diluted magnet-like behavior.
Garza-Navarro, Marco [Facultad de Ingenieria Mecanica y Electrica, Universidad Autonoma de Nuevo Leon, Av. Universidad s/n, Cd. Universitaria, San Nicolas de los Garza, Nuevo Leon 66450 (Mexico); Torres-Castro, Alejandro, E-mail: firstname.lastname@example.com [Facultad de Ingenieria Mecanica y Electrica, Universidad Autonoma de Nuevo Leon, Av. Universidad s/n, Cd. Universitaria, San Nicolas de los Garza, Nuevo Leon 66450 (Mexico); Centro de Innovacion, Investigacion y Desarrollo en Ingenieria y Tecnologia, Universidad Autonoma de Nuevo Leon, Apodaca, Nuevo Leon 66600 (Mexico); Gonzalez, Virgilio; Ortiz, Ubaldo [Facultad de Ingenieria Mecanica y Electrica, Universidad Autonoma de Nuevo Leon, Av. Universidad s/n, Cd. Universitaria, San Nicolas de los Garza, Nuevo Leon 66450 (Mexico); Centro de Innovacion, Investigacion y Desarrollo en Ingenieria y Tecnologia, Universidad Autonoma de Nuevo Leon, Apodaca, Nuevo Leon 66600 (Mexico); De la Rosa, Elder [Centro de Investigaciones en Optica, A.P. 1-948, Leon Gto. 37160 (Mexico)
Cellular response to low dose radiation: Role of phosphatidylinositol-3 kinase like kinases
It is increasingly realized that human exposure either to an acute low dose or multiple chronic low doses of low LET radiation has the potential to cause different types of cancer. Therefore, the central theme of research for DOE and NASA is focused on understanding the molecular mechanisms and pathways responsible for the cellular response to low dose radiation which would not only improve the accuracy of estimating health risks but also help in the development of predictive assays for low dose radiation risks associated with tissue degeneration and cancer. The working hypothesis for this proposal is that the cellular mechanisms in terms of DNA damage signaling, repair and cell cycle checkpoint regulation are different for low and high doses of low LET radiation and that the mode of action of phosphatidylinositol-3 kinase like kinases (PIKK: ATM, ATR and DNA-PK) determines the dose dependent cellular responses. The hypothesis will be tested at two levels: (I) Evaluation of the role of ATM, ATR and DNA-PK in cellular response to low and high doses of low LET radiation in simple in vitro human cell systems and (II) Determination of radiation responses in complex cell microenvironments such as human EpiDerm tissue constructs. Cellular responses to low and high doses of low LET radiation will be assessed from the view points of DNA damage signaling, DNA double strand break repair and cell cycle checkpoint regulation by analyzing the activities (i.e. post-translational modifications and kinetics of protein-protein interactions) of the key target proteins for PI-3 kinase like kinases both at the intra-cellular and molecular levels. The proteins chosen for this proposal are placed under three categories: (I) sensors/initiators include ATM ser1981, ATR, 53BP1, gamma-H2AX, MDC1, MRE11, Rad50 and Nbs1; (II) signal transducers include Chk1, Chk2, FANCD2 and SMC1; and (III) effectors include p53, CDC25A and CDC25C. The primary goal of this proposal is to elucidate the differences in cellular defense mechanisms between low and high doses of low LET radiation and to define the radiation doses where the cellular DNA damage signaling and repair mechanisms tend to shift. This information is critically important to address and advance some of the low dose research program objectives of DOE. The results of this proposed study will lead to a better understanding of the mechanisms for the cellular responses to low and high doses of low LET radiation. Further, systematic analysis of the role of PIKK signaling pathways as a function of radiation dose in tissue microenvironment will provide useful mechanistic information for improving the accuracy of radiation risk assessment for low doses. Knowledge of radiation responses in tissue microenvironment is important for the accurate prediction of ionizing radiation risks associated with cancer and tissue degeneration in humans.
Balajee, A.S.; Meador, J.A.; Su, Y.
Synthesis and luminescence properties of the lithium-containing lanthanum-oxycarbonate-like borates
The lithium-containing lanthanum-oxycarbonate-like borate, Li{sub 0.6}La{sub 2}O{sub 2.25}(BO{sub 3}){sub 0.7}, has been synthesized by solid-state reactions and was found to be isostructural with the type II lanthanum-oxycarbonate La{sub 2}O{sub 2}(CO{sub 3}). The new compound, lithium-containing lanthanum-oxycarbonate-like borate Li{sub 0.6}La{sub 2}O{sub 2.25}(BO{sub 3}){sub 0.7} has been synthesized and its structure characterized by the Rietveld method using powder X-ray diffraction data. It crystallizes in space group P6{sub 3}/mmc with lattice parameters of a=b=4.03396(3) A, c=16.5863(2) A, V=233.746(4) A{sup 3}. The mechanism of the lithium incorporation in the borate is that four Li{sup +} cations replace one (B{sub 2}O){sup 4+} group, i.e. Li{sub 0.6}La{sub 2}O{sub 2.25}(BO{sub 3}){sub 0.7} can be described as Li{sub 2x}La{sub 2}O{sub 1.5+2.5x}(BO{sub 3}){sub 1-x}, x=0.3 and the lithium incorporation stabilized the type II borate. The luminescent properties of Li{sub 0.6}La{sub 2}O{sub 2.25}(BO{sub 3}){sub 0.7} doped with Eu{sup 3+} were studied, indicating a potential application in white light emitting diodes (WLEDs). - Graphical abstract: The similar compounds of the new compound Li{sub 0.6}La{sub 2}O{sub 2.25}(BO{sub 3}){sub 0.7}. Projections along the b-axes of crystal structures for (a) La{sub 2}O{sub 2}CO{sub 3}-II, (b) A-type La{sub 2}O{sub 3}, (c) Li{sub 0.52}La{sub 2}O{sub 2.52}(CO{sub 3}){sub 0.74}. Highlights: Black-Right-Pointing-Pointer The new compound Li{sub 0.6}La{sub 2}O{sub 2.25}(BO{sub 3}){sub 0.7} has been synthesized. Black-Right-Pointing-Pointer Its structure is characterized by the Rietveld method using powder X-ray diffraction data. Black-Right-Pointing-Pointer This compound crystallizes in space group P6{sub 3}/mmc. Black-Right-Pointing-Pointer The mechanism of lithium incorporation in borate is that two Li{sup +} cations replace one (BO{sub 0.5}){sup 2+} group. Black-Right-Pointing-Pointer The Eu{sup 3+} doped samples have potential application in WLEDs.
Kang, Youjun; Liu, Chunmeng; Kuang, Xiaojun [KLGHEI of Environment and Energy Chemistry, MOE Laboratory of Bioinorganic and Synthetic Chemistry, State Key Laboratory of Optoelectronic Materials and Technologies, School of Chemistry and Chemical Engineering, Sun Yat-sen University, Guangzhou 510275 (China)] [KLGHEI of Environment and Energy Chemistry, MOE Laboratory of Bioinorganic and Synthetic Chemistry, State Key Laboratory of Optoelectronic Materials and Technologies, School of Chemistry and Chemical Engineering, Sun Yat-sen University, Guangzhou 510275 (China); Mi, Jinxiao [Department of Materials Science and Engineering, Xiamen University, Xiamen 361005 (China)] [Department of Materials Science and Engineering, Xiamen University, Xiamen 361005 (China); Liang, Hongbin, E-mail: email@example.com [KLGHEI of Environment and Energy Chemistry, MOE Laboratory of Bioinorganic and Synthetic Chemistry, State Key Laboratory of Optoelectronic Materials and Technologies, School of Chemistry and Chemical Engineering, Sun Yat-sen University, Guangzhou 510275 (China)] [KLGHEI of Environment and Energy Chemistry, MOE Laboratory of Bioinorganic and Synthetic Chemistry, State Key Laboratory of Optoelectronic Materials and Technologies, School of Chemistry and Chemical Engineering, Sun Yat-sen University, Guangzhou 510275 (China); Su, Qiang [KLGHEI of Environment and Energy Chemistry, MOE Laboratory of Bioinorganic and Synthetic Chemistry, State Key Laboratory of Optoelectronic Materials and Technologies, School of Chemistry and Chemical Engineering, Sun Yat-sen University, Guangzhou 510275 (China)] [KLGHEI of Environment and Energy Chemistry, MOE Laboratory of Bioinorganic and Synthetic Chemistry, State Key Laboratory of Optoelectronic Materials and Technologies, School of Chemistry and Chemical Engineering, Sun Yat-sen University, Guangzhou 510275 (China)
Insulin-Like Growth Factor-1 Preserves Salivary Gland Function After Fractionated Radiation
Purpose: Radiotherapy for head-and-neck cancer consists of fractionated radiation treatments that cause significant damage to salivary glands leading to chronic salivary gland dysfunction with only limited prevention and treatment options currently available. This study examines the feasibility of IGF-1 in preserving salivary gland function following a fractionated radiation treatment regimen in a pre-clinical model. Methods and Materials: Mice were exposed to fractionated radiation, and salivary gland function and histological analyses of structure, apoptosis, and proliferation were evaluated. Results: In this study, we report that treatment with fractionated doses of radiation results in a significant level of apoptotic cells in FVB mice after each fraction, which is significantly decreased in transgenic mice expressing a constitutively active mutant of Akt1 (myr-Akt1). Salivary gland function is significantly reduced in FVB mice exposed to fractionated radiation; however, myr-Akt1 transgenic mice maintain salivary function under the same treatment conditions. Injection into FVB mice of recombinant insulin-like growth factor-1 (IGF-1), which activates endogenous Akt, suppressed acute apoptosis and preserved salivary gland function after fractionated doses of radiation 30 to 90 days after treatment. FVB mice exposed to fractionated radiation had significantly lower levels of proliferating cell nuclear antigen-positive salivary acinar cells 90 days after treatment, which correlated with a chronic loss of function. In contrast, FVB mice injected with IGF-1 before each radiation treatment exhibited acinar cell proliferation rates similar to those of untreated controls. Conclusion: These studies suggest that activation of IGF-1-mediated pathways before head-and-neck radiation could modulate radiation-induced salivary gland dysfunction and maintain glandular homeostasis.
Limesand, Kirsten H., E-mail: email@example.com [Department of Physiological Sciences, University of Arizona, Tucson, AZ (United States); Department of Nutritional Sciences, University of Arizona, Tucson, AZ (United States); Avila, Jennifer L. [Department of Physiological Sciences, University of Arizona, Tucson, AZ (United States); Victory, Kerton; Chang, Hui-Hua; Shin, Yoon Joo; Grundmann, Oliver [Department of Nutritional Sciences, University of Arizona, Tucson, AZ (United States); Klein, Rob R. [Department of Pathology, University of Arizona, Tucson, AZ (United States)
Physics of Extreme Gravitomagnetic and Gravity-Like Fields for Novel Space Propulsion and Energy Generation
In 2006 Tajmar et al. reported on the measurements of extreme gravitomagnetic fields from small Nb rings at cryogenic temperatures that are about 18 orders of magnitude larger than gravitomagnetic fields obtained from GR (general relativity). Cifuolini in 2004 and the NASA-Stanford Gravity Probe-B experiment in 2007 confirmed the Lense-Thirring effect as predicted by GR (gravitomagnetic fields generated by a rotating massive body, i.e. Earth) within some 10%. In 2007 gravitomagnetic fields generated by a rotating cryogenic lead disk were measured by Graham et al. Though these measurements were not conclusive (the accuracy of the laser gyrometer was not sufficient to produce a standard deviation small enough) their experiment seems to have seen the same phenomenon reported earlier by Tajmar et al., termed parity violation. This means that gravitomagnetic fields produced by the cryogenic rotating ring or disk vary substantially and change sign for clockwise and counter-clockwise directions of rotation. The experimental situation therefore occurs to be contradictory. On the one hand GR has been confirmed while at the same time, there seems to be experimental evidence for the existence of extreme gravitomagnetic fields that cannot be generated by the movement of large masses. If these experiments can be confirmed, they give a clear indication for the existence of additional gravitational fields of non-Newtonian nature. As was shown by the GP-B experiment, measuring gravitomagnetic fields from GR poses extreme difficulties. Therefore a novel physical mechanism should exist for the generation of gravity-like fields, which might also provide the key to gravitational engineering similar to electromagnetic technology.
Jochem Hauser; Walter Dr�scher
We present precision radial velocity (RV) data that reveal a Super-Earth mass planet and two probable additional planets orbiting the bright nearby G0V star HD 1461. Our 12.8 years of Keck High Resolution Echelle Spectrometer precision RVs indicate the presence of a 7.4 M{sub +} planet on a 5.77 day orbit. The data also suggest, but cannot yet confirm, the presence of outer planets on low-eccentricity orbits with periods of 446.1 and 5017 days, and projected masses (Msin i) of 27.9 and 87.1 M{sub +}, respectively. Test integrations of systems consistent with the RV data suggest that the configuration is dynamically stable. We present a 12.2 year time series of photometric observations of HD 1461, which comprise 799 individual measurements, and indicate that it has excellent long-term photometric stability. However, there are small amplitude variations with periods comparable to those of the suspected second and third signals in the RVs near 5000 and 446 days, thus casting some suspicion on those periodicities as Keplerian signals. If the 5.77 day companion has a Neptune-like composition, then its expected transit depth is of order dapprox0.5 mmag. The geometric a priori probability of transits is approx8%. Phase folding of the ground-based photometry shows no indication that transits of the 5.77 day companion are occurring, but high-precision follow-up of HD 1461 during upcoming transit phase windows will be required to definitively rule out or confirm transits. This new system joins a growing list of solar-type stars in the immediate galactic neighborhood that are accompanied by at least one Neptune (or lower) mass planets having orbital periods of 50 days or less.
Rivera, Eugenio J.; Vogt, Steven S.; Laughlin, Gregory; Meschiari, Stefano [UCO/Lick Observatory, University of California, Santa Cruz, CA 95064 (United States); Butler, R. Paul [Department of Terrestrial Magnetism, Carnegie Institution of Washington, 5241 Broad Branch Road, NW, Washington, DC 20015-1305 (United States); Henry, Gregory W. [Center of Excellence in Information Systems, Tennessee State University, Nashville, TN 37209 (United States)
Effects of Non-Commutativity on Light-Hydrogen-Like Atoms and Proton Radius
We study the corrections induced by the theory of non-commutativity, in both space-space and space-time versions, on the spectrum of hydrogen-like atoms. For this, we use the relativistic theory of two-particle systems to take into account the effects of the reduced mass, and we use perturbation methods to study the effects of non-commutativity.We apply our study to the muon hydrogen with the aim to solve the puzzle of proton radius [R. Pohl et al., Nature 466, 213 (2010) and A. Antognini et al., Science 339, 417 (2013)]. The shifts in the spectrum are found more noticeable in muon H (muH) than in electron H (eH) because the corrections depend on the mass to the third power; This explains the discrepancy between muH and eH results. In space-space non-commutativity, the parameter required to resolve the puzzle Theta(ss) (0.35GeV)-2, exceeds the limit obtained for this parameter from various studies on eH Lamb shift. For space-time non-commutativity, the value Theta(st) (14.3GeV)-2 has been obtained and it is in agreement with the limit determined by Lamb shift spectroscopy in eH. We have also found that this value fills the gap between theory and experiment in the case of muD and improves the agreement between theoretical and experimental values in the case of hydrogen-deuterium isotope shift.
M. Moumni; A. BenSlama
Nuclear recoil corrections to the $2p_\\frac{3}{2}$ state energy of hydrogen-like and high $Z$ lithium like atoms in all orders in $?Z$
The relativistic nuclear recoil corrections to the energy of the $2p_{\\frac{3}{2}}$ state of hydrogen-like and the $(1s)^{2}2p_{\\frac{3}{2}}$ state of high $Z$ lithium-like atoms in all orders in $\\alpha Z$ are calculated. The calculations are carried out using the B-spline method for the Dirac equation. For low $Z$ the results of the calculation are in good agreement with the $\\alpha Z$ -expansion results. It is found that the total nuclear recoil contribution to the energy of the $(1s)^{2}2p_{\\frac{3}{2}}- (1s)^{2}2s$ transition in lithium-like uranium constitutes $-0.09\\,eV$.
Magnetic-sublevel population and alignment for the excitation of H- and He-like uranium in relativistic collisions
We have measured the alignment of the L-shell magnetic substates following the K-shell excitation of hydrogen- and helium-like uranium in relativistic collisions with a low-Z gaseous target. Within this experiment, the population distribution for the L-shell magnetic sublevels has been obtained via an angular differential study of the decay photons associated with the subsequent deexcitation process. The results show a very distinctive behavior for the H- and He-like heavy systems. In particular, for K{yields}L excitation of He-like uranium, a considerable alignment of the L-shell levels was observed. A comparison of our experimental findings with recent rigorous relativistic predictions provides a good qualitative and a reasonable quantitative agreement, emphasizing the importance of the magnetic-interaction and many-body effects in the strong-field domain of high-Z ions.
Gumberidze, A. [ExtreMe Matter Institute EMMI and Research Division, GSI Helmholtzzentrum fuer Schwerionenforschung, D-64291 Darmstadt (Germany); FIAS Frankfurt Institute for Advanced Studies, D-60438 Frankfurt am Main (Germany); Fritzsche, S. [FIAS Frankfurt Institute for Advanced Studies, D-60438 Frankfurt am Main (Germany); GSI Helmholtzzentrum fuer Schwerionenforschung, D-64291 Darmstadt (Germany); Department of Physics, University of Oulu, P.O. Box 3000, FIN-90014 (Finland); Hagmann, S. [GSI Helmholtzzentrum fuer Schwerionenforschung, D-64291 Darmstadt (Germany); Institut fuer Kernphysik, University of Frankfurt, D-60486 Frankfurt (Germany); Kozhuharov, C.; Steck, M. [GSI Helmholtzzentrum fuer Schwerionenforschung, D-64291 Darmstadt (Germany); Ma, X. [Institute of Modern Physics, 730000 Lanzhou (China); Surzhykov, A. [GSI Helmholtzzentrum fuer Schwerionenforschung, D-64291 Darmstadt (Germany); Physikalisches Institut, Ruprecht-Karls-Universitaet, Heidelberg (Germany); Warczak, A. [Institute of Physics, Jagiellonian University, Krakow (Poland); Stoehlker, Th. [GSI Helmholtzzentrum fuer Schwerionenforschung, D-64291 Darmstadt (Germany); Physikalisches Institut, Ruprecht-Karls-Universitaet, Heidelberg (Germany); Helmholtz-Institut Jena, D-07743 Jena (Germany)
Efforts towards the synthesis of fully N-differentiated heparin-like glycosaminoglycans; and, Investigations into the mechanism of inactivation of RTPR by gemcitabine triphosphate
Efforts towards the Synthesis of Fully N-Differentiated Heparin-like Glycosaminoglycans. Heparin-like glycosaminoglycans (HLGAGs) are complex information-carrying biopolymers and are an important component of the coagulation ...
Lohman, Gregory J. S
Evaluation of Nature-like and Technical Fish Passes for the Passage of Alewife (Alosa pseudoharengus) at Two Coastal Streams in New England.
??Nature-like fish passes have been designed with the intent to re-connect river corridors and provide passage for all species occurring in a system. Nature-like fish� (more)
Franklin, Abigail
Characterisation and therapeutic modulation of toll-like receptor signalling in response to the intracellular pathogen F. tularensis
nucleator A AIM Absent in melanoma ?? Amino acid AP Activator protein APC Antigen presenting cell ARE adenylate/uridylate-rich element ASC Apoptosis-associated speck-like protein ATF AP-1 transcription factor BCGA Blood cysteine glucose agar BMDM... from their pro-forms to an active state leading to the processing of interleukin (IL)-1? and IL- 18. The most studied complex is formed of NLRP3, apoptosis-associated speck-like protein (ASC) and caspase-1 and is activated upon stimulation by numerous...
Saint, Richard
Diamond-like atomic-scale composite films: Surface properties and stability studied by STM and AFM
Amorphous ``diamond-like/quartz-like`` composites a-(C:H/Si:O) and metal containing a-(C:H/Si:O/Me) constitute a novel class of diamond-related materials with a number of unique bulk and surface properties. In order to gain a more fundamental understanding of the surface properties and stability of these solids we have performed a scanning tunneling and atomic force microscopy investigation of both a-(C:H/Si:O) and a-(C:H/Si:O/Me) films, including the effects of ion bombardment and annealing.
Dorfman, B.; Abraizov, M. [SUNY, Farmingdale, NY (United States); Pollak, F.H. [CUNY, Brooklyn, NY (United States); Eby, R. [TopoMetrix, Bedminster, NJ (United States); Rong, Z.Y. [SUNY, Stony Brook, NY (United States); Strongin, M.; Yang, X.Q. [Brookhaven National Lab., Upton, NY (United States)
Direct experimental evidence for a negative heat capacity in the liquid-to-gas like phase transitionin hydrogen cluster ions backbending of the caloric curve
Direct experimental evidence for a negative heat capacity in the liquid-to-gas like phase transitionin hydrogen cluster ions
Gobet, F; Farizon, M; Gaillard, M J; Buchet, J P; Carr�, M; Schreier, P; M�rk, T D
Green chemical transformation of phenolic pollutants using mesoporous NiO nanocrystals with sheet-like morphology
We report the fabrication of hierarchical mesoporous NiO nanocrystals (NCs) with sheet-like morphology via a simple, and eco-friendly hydrothermal method. Mesoporous NiO particles were characterized by small- and wide-angle X-ray diffraction, nitrogen ... Keywords: chemical transformation, mesoporous NiO, nanocatalysts, pollutants
Mohamed Khairy; Sherif A. El-Safty; Mohamed Ismael; M. A. Shenashen
Structurally Distinct Bacterial TBC-like GAPs Link Arf GTPase to Rab1 Inactivation to Counteract Host Defenses
Rab GTPases are frequent targets of vacuole-living bacterial pathogens for appropriate trafficking of the vacuole. Here we discover that bacterial effectors including VirA from nonvacuole Shigella flexneri and EspG from extracellular Enteropathogenic Escherichia coli (EPEC) harbor TBC-like dual-finger motifs and exhibits potent RabGAP activities. Specific inactivation of Rab1 by VirA/EspG disrupts ER-to-Golgi trafficking. S. flexneri intracellular persistence requires VirA TBC-like GAP activity that mediates bacterial escape from autophagy-mediated host defense. Rab1 inactivation by EspG severely blocks host secretory pathway, resulting in inhibited interleukin-8 secretion from infected cells. Crystal structures of VirA/EspG-Rab1-GDP-aluminum fluoride complexes highlight TBC-like catalytic role for the arginine and glutamine finger residues and reveal a 3D architecture distinct from that of the TBC domain. Structure of Arf6-EspG-Rab1 ternary complex illustrates a pathogenic signaling complex that rewires host Arf signaling to Rab1 inactivation. Structural distinctions of VirA/EspG further predict a possible extensive presence of TBC-like RabGAP effectors in counteracting various host defenses.
Dong, Na; Zhu, Yongqun; Lu, Qiuhe; Hu, Liyan; Zheng, Yuqing; Shao, Feng (NIBS-China); (Zhejiang)
Global trace asymptotics in the self-generated magnetic field in the case of Coulomb-like singularities
We consider a semiclassical asymptotics of local trace for the 3D-Schroedinger operator with self-generated magnetic field in the case when electric potential has one or several Coulomb-like singularities; it is given by Weyl expression plus (magnetic) Scott correction term with O(h^{-4/3}) error provided distance between singularities is large enough.
Ivrii, Victor
Monodisperse spindle-like FeWO{sub 4} nanoparticles: Controlled hydrothermal synthesis and enhanced optical properties
Monodisperse FeWO{sub 4} nanoparticles with specific spindle-like morphology have been synthesized in the presence of citric acid through hydrothermal process. In the synthesis route, citric acid played four roles such as the reducing agent, chelating regents, structure-directing agent and stabilizing agents. In addition, the morphology of FeWO{sub 4} was dramatically tuned by the pH value of the precursor medium. The optical properties of FeWO{sub 4} were investigated with UV-Vis spectra and photoluminescence spectroscopy. The photocatalytic experiments demonstrated that the decomposition efficiency of the monodisperse spindle-like FeWO{sub 4} nanoparticles is 74% after 30 min of UV irradiation, which displayed remarkable enhanced photodegradation activity compared with ordinary FeWO{sub 4} sample (57%) and normal TiO{sub 2} photocatalysts P-25 (56%). - Monodisperse spindle-like FeWO{sub 4} nanoparticles with enhanced photocatalytic activities. Highlights: Black-Right-Pointing-Pointer Monodisperse spindle-like FeWO{sub 4} were synthesized with hydrothermal method. Black-Right-Pointing-Pointer Citric acid plays key roles in the hydrothermal synthesis. Black-Right-Pointing-Pointer Their morphology can be tuned with pH value of the precursor medium. Black-Right-Pointing-Pointer They show enhanced photocatalytic activities with irradiation of UV light.
Guo, Jinxue; Zhou, Xiaoyu; Lu, Yibin [Qingdao University of Science and Technology, College of Chemistry and Molecular Engineering, No.53, Zhengzhou Road, People's Republic of China, Qingdao, Shandong 266042 (China)] [Qingdao University of Science and Technology, College of Chemistry and Molecular Engineering, No.53, Zhengzhou Road, People's Republic of China, Qingdao, Shandong 266042 (China); Zhang, Xiao, E-mail: email@example.com [Qingdao University of Science and Technology, College of Chemistry and Molecular Engineering, No.53, Zhengzhou Road, People's Republic of China, Qingdao, Shandong 266042 (China)] [Qingdao University of Science and Technology, College of Chemistry and Molecular Engineering, No.53, Zhengzhou Road, People's Republic of China, Qingdao, Shandong 266042 (China); Kuang, Shaoping; Hou, Wanguo [Qingdao University of Science and Technology, College of Chemistry and Molecular Engineering, No.53, Zhengzhou Road, People's Republic of China, Qingdao, Shandong 266042 (China)] [Qingdao University of Science and Technology, College of Chemistry and Molecular Engineering, No.53, Zhengzhou Road, People's Republic of China, Qingdao, Shandong 266042 (China)
Muon g - 2 anomaly and 125 GeV Higgs: Extra vector-like quark and LHC prospects
The ATLAS and CMS collaborations recently reported indication of a Higgs boson around 125GeV. If we add extra vector-like quarks to the MSSM, such a relatively heavy Higgs can be naturally realized in the GMSB framework, simultaneously explaining the muon g - 2 anomaly. I will discuss LHC prospect of this attractive model.
Iwamoto, Sho [Department of Physics, University of Tokyo, Tokyo 113-0033 (Japan)
Scheme for Generation of W and W-like States of Nonidentical Particles and their Application in Teleportation
In this paper, a scheme is proposed for the preparation of the tripartite W state or W-like state of nonidentical particles. In our scheme, our required resources include two atoms and one cavity field, which makes our system become simple. Because each ... Keywords: 03.65.Bz, 42.50.Dv, Wstate, cavity QED, teleportation
Aixi Chen; Li Deng
Evidence for a distinct region causing a cat-like cry in patients with 5p deletions
The cri-du-chat syndrome is a contiguous gene syndrome that results from a deletion of the short arm of chromosome 5 (5p). Patients present with a cat-like cry at birth, which is usually considered diagnostic of this syndrome. Additional features of the syndrome include failure to thrive, microcephaly, hypertelorism, epicanthal folds, hypotonia, and severe mental retardation. We report on four families in which patients with 5p deletions have only the characteristic cat-like cry, with normal to mildly delayed development. The precise locations of the deletions in each family were determined by FISH using lambda phage and cosmic clones. All of the deletion breakpoints map distal to a chromosomal region that is implicated with the facial features and severe mental and developmental delay in the cri-du-chat syndrome. DNA clones mapping in the chromosomal region associated with the cat-like cry feature will be useful diagnostic tools. They will allow for the distinction between 5p deletions that will result in the severe delay observed in most cri-du-chat syndrome patients and those deletions that result in the isolated cat-like cry feature, which is associated with a better prognosis. 19 refs., 5 figs., 1 tab.
Gersh, M.; Goodart, S.A.; Overhauser, J. [Thomas Jefferson Univ., Philadelphia, PA (United States)] [and others
PMC42, a breast progenitor cancer cell line, has normal-like mRNA and miRNA transcriptomes
normal breast epithelium, and PMC42, a breast cancer cell line that retains progenitor pluripotency allowing in-culture differentiation to both secretory and myoepithelial fates. In contrast, only PMC42 exhibits a normal-like miRNA expression profile. We...
Git, Anna; Spiteri, Inmaculada; Blenkiron, Cherie; Dunning, Mark J; Pole, Jessica C M; Chin, Suet-Feung; Wang, Yanzhong; Smith, James C; Livesey, Frederick J; Caldas, Carlos
Physics and engineering results obtained with the ion cyclotron range of frequencies ITER-like antenna on JET
This paper summarizes the operational experience of the ion cyclotron resonant frequency (ICRF) ITER-like antenna on JET aiming at substantially increasing the power density in the range of the requirements for ITER combined with load resiliency. An in-depth description of its commissioning, operational aspects and achieved performances is presented.
Durodie, F. [ERM-KMS, Association EURATOM-Belgian State, Brussels, Belgium; Nightingale, M. [EURATOM / UKAEA, Abingdon, UK; Mayoral, M. -L. [EURATOM / UKAEA, Abingdon, UK; Ongena, J. [ERM-KMS, Association EURATOM-Belgian State, Brussels, Belgium; Argouarch, A. [CEA Cadarache, St. Paul lex Durance, France; Berger-By, G. [CEA Cadarache, St. Paul lex Durance, France; Goulding, Richard Howell [ORNL
The FIP-1 like polyadenylation factor in trypanosomes and the structural basis for its interaction with CPSF30
In trypanosomes transcription is polycistronic and individual mRNAs are generated by a trans-splicing/polyadenylation coupled reaction. We identified a divergent trypanosome FIP1-like, a factor required for mRNA 3' end formation from yeasts to human. Here we showed that it is a nuclear protein with a speckled distribution essential for trypanosome viability. A strong interaction was found between TcFIP1-like and TcCPSF30, a component of the polyadenylation complex. We determined the specific amino acids in each protein involved in the interaction. Significant differences were found between the trypanosome interaction surface and its human counterpart. Although CPSF30/FIP1 interaction is known in other organisms, this is the first report mapping the interaction surface at the amino acid level.
Bercovich, Natalia; Levin, Mariano J. [INGEBI-CONICET, Vta. de Obligado 2490, 2P, CP 1428, 1428 Buenos Aires (Argentina); Vazquez, Martin P. [INGEBI-CONICET, Vta. de Obligado 2490, 2P, CP 1428, 1428 Buenos Aires (Argentina); Departamento de Fisiologia, Biologia Molecular y Celular, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, Pab. II, Buenos Aires (Argentina)], E-mail: email@example.com
Multiconfiguration Dirac-Fock calculations on multi-valence-electron systems: Benchmarks on Ga-like ions
High-accuracy calculations of term energies and wavelengths of resonance lines in Ga-like ions have been performed as benchmarks in the request for accurate treatments of relativity, electron correction, and QED effects in multi-valence-electron systems. The calculated energy levels are in excellent agreement with the experimental results and the experimentally compiled energy values of the National Institute for Standards and Technology wherever available. The calculated values including core-valence correction are found to be in good agreement with other theoretical and experimental values for low- to medium-Z ions. On the basis of our calculations, some theoretical wavelengths for Ga-like Rb vii to Mo xii are also given. For higher-Z ions, computed wavelengths are compared well with the experimental results [E. Traebert, J. Clementson, P. Beiersdorfer, J. A. Santana, and Y. Ishikawa, Phys. Rev. A 82, 062519 (2010), I. N Draganicet al., J. Phys. B 44, 025001 (2011)].
Hu Feng [Research Center of Laser Fusion, China Academy of Engineering Physics, Mianyang, 621900 Sichuan (China); Institute of Atomic and Molecular Physics, Sichuan University, Chengdu, 610065 Sichuan (China); Yang Jiamin; Wang Chuanke; Jing Longfei; Chen Shubo [Research Center of Laser Fusion, China Academy of Engineering Physics, Mianyang, 621900 Sichuan (China); Jiang Gang; Liu Hao; Hao Lianghuan [Institute of Atomic and Molecular Physics, Sichuan University, Chengdu, 610065 Sichuan (China)
A Supersymmetric Explanation of the Excess of Higgs--Like Events at the LHC and at LEP
The LHC collaborations have recently announced evidence for the production of a "Higgs--like" boson with mass near 125 GeV. The properties of the new particle are consistent (within still quite large uncertainties) with those of the Higgs boson predicted in the Standard Model (SM). This discovery comes nearly ten years after a combined analysis of the four LEP experiments showed a mild excess of Higgs--like events with a mass near 98 GeV. I show that both groups of events can be explained simultaneously in the minimal supersymmetric extension of the SM, in terms of the production and decay of the two neutral CP--even Higgs bosons predicted by this model, and explore the phenomenological consequences of this explanation.
Manuel Drees
Using the X-FEL to photo-pump X-ray laser transitions in He-like Ne
Nearly four decades ago H-like and He-like resonantly photo-pumped laser schemes were proposed for producing X-ray lasers. However, demonstrating these schemes in the laboratory has proved to be elusive because of the difficulty of finding a strong resonant pump line. With the advent of the X-ray free electron laser (X-FEL) at the SLAC Linac Coherent Light Source (LCLS) we now have a tunable X-ray laser source that can be used to replace the pump line in previously proposed laser schemes and allow researchers to study the physics and feasibility of resonantly photo-pumped laser schemes. In this paper we use the X-FEL at 1174 eV to photo-pump the singly excited 1s2p state of He-like Ne to the doubly excited 2p3p state and model gain on the 2p3p-2p2s transition at 175 eV and the 2p3p-1s3p transition at 1017 eV. One motivation for studying this scheme is to explore possible quenching of the gain due to strong non-linear coupling effects from the intense X-FEL beam We compare this scheme with photo-pumping the He-like Ne ground state to the 1s3p singly excited state followed by lasing on the 3p-2s and 3d-2p transitions at 158 and 151 eV. Experiments are being planned at LCLS to study these laser processes and coherent quantum effects.
Nilsen, J; Rohringer, N
Shock problem for MKdV equation: Long time Dynamics of the Step-like initial data
We consider the modified Korteveg de Vriez equation on the whole line. Initial data is real and step-like, i.e. $q(x,0)=0$ for $x\\geq0$ and $q(x,0)=c$ for $x4c^2t$ the solution is tend to $c$ and 0 correspondingly. In the region $-6c^2t V. Kotlayrov; A. Minakov 2013-03-11T23:59:59.000Z
V. Kotlayrov; A. Minakov
Upper Limits on the Number of Small Bodies in Sedna-Like Orbits by the TAOS Project
We present the results of a search for occultation events by objects at distances between 100 and 1000 AU in lightcurves from the Taiwanese-American Occultation Survey (TAOS). We searched for consecutive, shallow flux reductions in the stellar lightcurves obtained by our survey between 7 February 2005 and 31 December 2006 with a total of {approx} 4.5 x 10{sup 9} three-telescope simultaneous photometric measurements. No events were detected, allowing us to set upper limits on the number density as a function of size and distance of objects in Sedna-like orbits, using simple models.
Wang, J; Lehner, M J; Zhang, Z; Bianco, F B; Alcock, C; Chen, W; Axelrod, T; Byun, Y; Coehlo, N K; Cook, K H; Dave, R; de Pater, L; Porrata, R; Kim, D; King, S; Lee, T; Lin, H; Lissauer, J J; Marshall, S L; Protopapas, P; Rice, J A; Schwamb, M E; Wang, S; Wen, C
"Quantum" Chaos and Stability Condition of Soliton-like Waves of Nuclear Burning in Neutron-Multiplicating Media
We show that the stability condition for the soliton-like wave of nuclear burning in neutron-multiplicating medium is determined in general by two conditions. The first condition (necessary) is determined by relationship between the equilibrium concentration and critical concentration of active (fissile) isotope, that is a consequence of the Bohr-Sommerfeld quantization condition. The second condition (sufficient) is set by the so-called Wigner quantum statistics, or more accurately, by a ststistics of the Gaussian simplectic ensembles with respect to the parameter that describes the squared width of burning wave front of nuclear fuel active component.
Rusov, V D; Tarasov, V A; Zelentsova, T N; Sharf, I V; Chernezhenko, S A; Byegunova, O A
Formation of core/shell-like ZnSe1?xTex nanocrystals due to equilibrium surface segregation
We report results of equilibrium surface segregation in ZnSe{sub 1?x}Te{sub x} nanocrystals based on a computational analysis of coupled compositional, structural, and volume relaxation of the nanocrystals that employs Monte Carlo and conjugate-gradient methods according to a first-principles-parameterized description of interatomic interactions. We have determined the equilibrium concentration distribution as a function of nanocrystal size and composition for nanocrystal morphologies that include faceted equilibrium crystal shapes. The results identify the nanoparticle size and composition ranges that allow for self-assembly of core/shell-like nanocrystal structures characterized by a Te-deficient core and a Te-rich shell.
Pandey, Sumeet C.; Mountziaris, T. J.; Venkataraman, Dhandapani; Maroudas, Dimitris
Pharmacogenomics and the Yin/Yang actions of ginseng: anti-tumor, angiomodulating and steroid-like activities of ginsenosides
-leaved pseudoginseng Sichuan, China Panax vietnamensis Ha et Grushv. Bamboo ginseng Vietnamese Ginseng Panax zingiberensis C.Y. Wu and K.M. Feng Ginger ginseng Ginger-like Pseudo-ginseng Yunnan, China [References: 5, 8, 9, MULTILINGUAL MULTISCRIPT PLANT NAME DATABASE... -http://www.plantnames.unimelb.edu.au/Sorting/Panax.html#bipinnatifidus and Ginseng: A Concise Handbook. Edited by James A, Duke. Reference Publications, Inc. 1989. Michigan, USA]Page 3 of 21 (page number not for citation purposes) Finally, these ECs...
Yue, Patrick Ying Kit; Mak, Nai Ki; Cheng, Yuen Kit; Leung, Kar Wah; Ng, Tzi Bun; Fan, Tai-Ping; Yeung, Hin Wing; Wong, Ricky Ngok Shun
Development of a Neutron Diffraction Based Experiemental Capability for Investigating Hydraulic Fracturing for EGS-like Conditions
Hydraulic fracturing to enhance formation permeability is an established practice in the Oil & Gas (O&G) industry and is expected to be an enabler for EGS. However, it is rarely employed in conventional geothermal systems and there are significant questions regarding the translation of practice from O&G to both conventional geothermal and EGS applications. Lithological differences(sedimentary versus crystalline rocks, significantly greater formation temperatures and different desired fracture characteristics are among a number of factors that are likely to result in a gap of understanding of how to manage hydraulic fracturing practice for geothermal. Whereas the O&G community has had both the capital and the opportunity to develop its understanding of hydraulic fracturing operations empirically in the field as well through extensive R&D efforts, field testing opportunities for EGS are likely to be minimal due to the high expense of hydraulic fracturing field trials. A significant portion of the knowledge needed to guide the management of geothermal/EGS hydraulic fracturing operations will therefore likely have to come from experimental efforts and simulation. This paper describes ongoing efforts at Oak Ridge National Laboratory (ORNL) to develop an experimental capability to map the internal stresses/strains in core samples subjected to triaxial stress states and temperatures representative of EGS-like conditions using neutron diffraction based strain mapping techniques. This capability is being developed at ORNL\\'s Spallation Neutron Source, the world\\'s most powerful pulsed neutron source and is still in a proof of concept phase. A specialized pressure cell has been developed that permits independent radial and axial fluid pressurization of core samples, with axial flow through capability and a temperature rating up to 300 degrees C. This cell will ultimately be used to hydraulically pressurize EGS-representative core samples to conditions of imminent fracture and map the associated internal strain states of the sample. This will hopefully enable a more precise mapping of the rock material failure envelope, facilitate a more refined understanding of the mechanism of hydraulically induced rock fracture, particularly in crystalline rocks, and serve as a platform for validating and improving fracture simulation codes. The elements of the research program and preliminary strain mapping results of a Sierra White granite sample subjected only to compressive loading will be discussed in this paper.
Polsky, Yarom [ORNL; Anovitz, Lawrence {Larry} M [ORNL; An, Ke [ORNL; Carmichael, Justin R [ORNL; Bingham, Philip R [ORNL; Dessieux Jr, Luc Lucius [ORNL
Examining the function of the residue C207 in the cysteine desulfurase reaction of an essential NifS-like protein from
NifS-like protein from Synechocystis PCC6803 Anthony Paul Trace, McNair Scholar, Pennsylvania State analysis showed the NifS protein is essential to the production of many metalloenzymes, specifically iron Synechocystis sp. PCC 6803 encodes three NifS-like proteins: Slr0077, Slr0387, and Sll0704. Genetic experiments
Omiecinski, Curtis
Structure and Formation Mechanism on the 24 May 2000 Supercell-Like Storm Developing in a Moist Environment over the Kanto Plain, Japan
The structure and formation mechanism of a supercell-like storm in a moist environment below a melting layer were investigated using dual-Doppler radar analysis and a cloud-resolving storm simulator (CReSS). The supercell-like storm developed ...
Shingo Shimizu; Hiroshi Uyeda; Qoosaku Moteki; Takeshi Maesaka; Yoshimasa Takaya; Kenji Akaeda; Teruyuki Kato; Masanori Yoshizaki
Evolution of Plant-Like Crystalline Storage Polysaccharide in the Protozoan Parasite Toxoplasma gondii Argues for a Red Alga Ancestry
Abstract. Single-celled apicomplexan parasites are known to cause major diseases in humans and animals including malaria, toxoplasmosis, and coccidiosis. The presence of apicoplasts with the remnant of a plastid-like DNA argues that these parasites evolved from photosynthetic ancestors possibly related to the dinoflagellates. Toxoplasma gondii displays amylopectin-like polymers within the cytoplasm of the dormant brain cysts. Here we report a detailed structural and comparative analysis of the Toxoplasma gondii, green alga Chlamydomonas reinhardtii, and dinoflagellate Crypthecodinium cohnii storage polysaccharides. We show Toxoplasma gondii amylopectin to be similar to the semicrystalline floridean starch accumulated by red algae. Unlike green plants or algae, the nuclear DNA sequences as well as biochemical and phylogenetic analysis argue that the Toxoplasma gondii amylopectin pathway has evolved from a totally different UDP-glucose-based metabolism similar to that of the floridean starch accumulating red alga Cyanidioschyzon merolae and, to a lesser extent, to those of glycogen storing animals or fungi. In both red algae and apicomplexan parasites, isoamylase and glucan�water dikinase sequences are proposed to explain the appearance of semicrystalline Correspondence to: Stanislas Tomavo;
Jean-st�phane Varr�; Luc Lienard; David Dauville E; Yann Gue Rardel; Marie-odile Soyer-gobillard; Alain Bule On; Steven Ball; Stanislas Tomavo
Pseudoscalar boson and standard model-like Higgs boson productions at the LHC in the simplest little Higgs model
In the framework of the simplest little Higgs model, we perform a comprehensive study for the pair productions of the pseudoscalar boson {eta} and standard model-like Higgs boson h at LHC, namely gg(bb){yields}{eta}{eta}, gg(qq){yields}{eta}h, and gg(bb){yields}hh. These production processes provide a way to probe the couplings between Higgs bosons. We find that the cross section of gg{yields}{eta}{eta} always dominates over that of bb{yields}{eta}{eta}. When the Higgs boson h which mediates these two processes is on-shell, their cross sections can reach several thousand fb and several hundred fb, respectively. When the intermediate state h is off-shell, those two cross sections are reduced by 2 orders of magnitude, respectively. The cross sections of gg{yields}{eta}h and qq{yields}{eta}h are about in the same order of magnitude, which can reach O(10{sup 2} fb) for a light {eta} boson. Besides, compared with the standard model prediction, the cross section of a pair of standard model-like Higgs bosons production at LHC can be enhanced sizably. Finally, we briefly discuss the observable signatures of {eta}{eta}, {eta}h, and hh at the LHC.
Wang Lei; Han Xiaofang [Department of Physics, Yantai University, Yantai 264005 (China)
The KamLAND-experiment and Soliton-like Nuclear Georeactor. Part 1. Comparison of Theory with Experiment
We give an alternative description of the data produced in the KamLAND experiment, assuming the existence of a natural nuclear reactor on the boundary of the liquid and solid phases of the Earth's core. Analyzing the uncertainty of antineutrino spectrum of georeactor origin, we show that the theoretical (which takes into account the soliton-like nuclear georeactor) total reactor antineutrino spectra describe with good accuracy the experimental KamLAND-data over the years 2002-2007 and 2002-2009, respectively. At the same time the parameters of mixing (delta m^2 21=2.5*10^-5 eV^2, tan^2(theta12)=0.437) calculated within the framework of georeactor hypothesis substantially differ from the parameters of mixing (delta m^2 21=7.49*10^-5 eV^2, tan^2(theta12)=0.436) obtained in KamLAND-experiment for total exposure over the period 2002-2009. By triangulation of the KamLAND and Borexino data we have constructed the coordinate location of soliton-like nuclear georeactors on the boundary of the liquid and solid phases ...
Rusov, V D; Mavrodiev, S Cht; Linnik, E P; Vaschenko, V N; Zelentsova, T N; Beglaryan, M E; Tarasov, V A; Chernegenko, S A; Smolyar, V P; Molchinikolov, P O; Merkotan, K K
A Gamma-Ray Burst/Pulsar for Cosmic-Ray Positrons with a Dark Matter-like Spectrum
We propose that a nearby gamma-ray burst (GRB) or GRB-like (old, single and short-lived) pulsar/supernova remnant/microquasar about 10^{5-6} years ago may be responsible for the excesses of cosmic-ray positrons and electrons recently observed by the PAMELA, ATIC/PPB-BETS, Fermi and HESS experiments. We can reproduce the smooth Fermi/HESS spectra as well as the spiky ATIC/PPB-BETS spectra. The spectra have a sharp cutoff that is similar to the dark matter predictions, sometimes together with a line (not similar), since higher energy cosmic-rays cool faster where the cutoff/line energy marks the source age. A GRB-like astrophysical source is expected to have a small but finite spread in the cutoff/line as well as anisotropy in the cosmic-ray and diffuse gamma-ray flux, providing a method for the Fermi and future CALET experiments to discriminate between dark matter and astrophysical origins.
Kunihito Ioka
Simulation of the electron diffraction patterns from needle/rod-like precipitates in Al-Mg-Si alloys
The origin of the selected area electron diffraction (SAED) patterns from needle/rod-like metastable precipitates embedded in {alpha}-Al matrix in Al-Mg-Si alloys have been studied via an example of {beta}'' phase. In addition, the SAED pattern from {beta}'' phase has been simulated with significant improvement in comparison with the previous simulations. Three important factors, i.e. the 12 crystallographically equivalent variants of {beta}'' phase in the {alpha}-Al matrix due to the highly symmetric f.c.c. structure of {alpha}-Al, the coherence between {beta}'' phase and the {alpha}-Al matrix, and the double diffractions from the {alpha}-Al matrix and {beta}'' phase, are proved to contribute to the special square-shaped features in the SAED patterns from {beta}'' phase and thus fully taken into account in the simulation. An improved but simplified method for simulating the SAED patterns from needle/rod-like metastable precipitates has been developed. This method is further verified by simulating the SAED pattern from Q phase. The simulated SAED patterns from both {beta}'' and Q phases fit the experimentally determined patterns very well. - Highlights: {yields}An improved method has been developed to simulate the SADPs of Al alloys. {yields}The formation mechanism of SADPs of Al alloys has been systemically studied. {yields}Double diffraction contributes to the formation of the SADPs of Al alloys.
Li Kai [State Key Laboratory of Powder Metallurgy, Central South University, Changsha 410083 (China); Song Min, E-mail: email@example.com [State Key Laboratory of Powder Metallurgy, Central South University, Changsha 410083 (China); Du Yong [State Key Laboratory of Powder Metallurgy, Central South University, Changsha 410083 (China); Zhang Hong [School of Materials Science and Engineering, Central South University, Changsha 410083 (China)
Modification of the formation of high-Mach number electrostatic shock-like structures by the ion acoustic instability
The formation of unmagnetized electrostatic shock-like structures with a high Mach number is examined with one- and two-dimensional particle-in-cell (PIC) simulations. The structures are generated through the collision of two identical plasma clouds, which consist of equally hot electrons and ions with a mass ratio of 250. The Mach number of the collision speed with respect to the initial ion acoustic speed of the plasma is set to 4.6. This high Mach number delays the formation of such structures by tens of inverse ion plasma frequencies. A pair of stable shock-like structures is observed after this time in the 1D simulation, which gradually evolve into electrostatic shocks. The ion acoustic instability, which can develop in the 2D simulation but not in the 1D one, competes with the nonlinear process that gives rise to these structures. The oblique ion acoustic waves fragment their electric field. The transition layer, across which the bulk of the ions change their speed, widens and their speed change is redu...
Dieckmann, Mark E; Doria, Domenico; Pohl, Martin; Borghesi, Marco
Gravity Behaves Like That?
Many concepts of chaotic action in astrodynamics can be appreciated through simulations with home computers and software. Many astrodynamical cases are illustrated. Although chaos theory is now applied to spaceflight trajectories
John Pazmino
Hints of the Existence of Axion-Like-Particles From the Gamma-Ray Spectra of Cosmological Sources
Axion Like Particles (ALPs) are predicted to couple with photons in the presence of magnetic fields. This effect may lead to a significant change in the observed spectra of gamma-ray sources such as AGNs. Here we carry out a detailed study that for the first time simultaneously considers in the same framework both the photon/axion mixing that takes place in the gamma-ray source and that one expected to occur in the intergalactic magnetic fields. An efficient photon/axion mixing in the source always means an attenuation in the photon flux, whereas the mixing in the intergalactic medium may result in a decrement and/or enhancement of the photon flux, depending on the distance of the source and the energy considered. Interestingly, we find that decreasing the value of the intergalactic magnetic field strength, which decreases the probability for photon/axion mixing, could result in an increase of the expected photon flux at Earth if the source is far enough. We also find a 30% attenuation in the intensity spectrum of distant sources, which occurs at an energy that only depends on the properties of the ALPs and the intensity of the intergalactic magnetic field, and thus independent of the AGN source being observed. Moreover, we show that this mechanism can easily explain recent puzzles in the spectra of distant gamma-ray sources, like the possible detection of TeV photons from 3C 66A (a source located at z=0.444) by MAGIC and VERITAS, which should not happen according to conventional models of photon propagation over cosmological distances. Another puzzle is the recent published lower limit to the EBL intensity at 3.6 {micro}m (which is almost twice larger as the previous one), which implies very hard spectra for some detected TeV gamma-ray sources located at z=0.1-0.2. The consequences that come from this work are testable with the current generation of gamma-ray instruments, namely Fermi (formerly known as GLAST) and imaging atmospheric Cherenkov telescopes like CANGAROO, HESS, MAGIC and VERITAS.
Sanchez-Conde, M.A.; /IAA, Granada /SLAC; Paneque, D.; Bloom, E.; /KIPAC, Menlo Park; Prada, F.; /IAA, Granada /UC, Santa Cruz; Dominguez, A.; /IAA, Granada /Seville U.
Preparation of diamond-like carbon and boron nitirde films by high-intensity pulsed ion beam deposition
Intense ion beams (300-keV C{sup +}, O{sup +}, and H{sup +}, 20--30 kA, 50 to 400-ns pulsewidth, up to 0.3-Hz repetition rate) were used to prepare diamond-like carbon (DLC) and boron nitride (BN) films. Deposition rates of up to 25{plus_minus}5 nm/pulse were obtained with instantaneous rates exceeding 1 mm/s. Most films were uniform, light brown, translucent, and nonporous with some micron-size particulates. Raman and parallel electron energy loss spectroscopy indicated the presence of DLC. The films possessed favorable electron field-emission characteristics desirable for cold-cathode displays. Transmission electron microscopy (TEM) and transmission electron diffraction (TED) revealed that the C films contained diamond crystals with 25 to 125-nm grain size. BN films were composed of hexagonal, cubic and wurtzite phases.
Rej, D.J.; Davis, H.A. [Los Alamos National Lab., NM (United States); Remnev, G.E. [Tomsk Polytechnic Univ., Tomsk (Russian Federation). Nuclear Physics Institute.] [and others
System and method for measuring particles in a sample stream of a flow cytometer or the like
A system and method for analyzing a particle in a sample stream of a flow cytometer or the like. The system has a light source, such as a laser pointer module, for generating a low powered light beam and a fluidics apparatus which is configured to transport particles in the sample stream at substantially low velocity through the light beam for interrogation. Detectors, such as photomultiplier tubes, are configured to detect optical signals generated in response to the light beam impinging the particles. Signal conditioning circuitry is connected to each of the detectors to condition each detector output into electronic signals for processing and is designed to have a limited frequency response to filter high frequency noise from the detector output signals.
Graves, Steven W. (San Juan Pueblo, NM); Habberset, Robert C. (Santa Fe, NM)
Calculation of the two-photon decay rates of hydrogen-like ions by using B-polynomials
A new approach is laid out to investigate the two photon atomic transitions. It is based on application of the finite basis solutions constructed from the Bernstein Polynomial (B-Polynomial) sets. We show that such an approach provides a very promising route for the relativistic second- (and even higher-order) calculations since it allows for analytical evaluation of the involved matrices elements. In order to illustrate possible applications of the method and to verify its accuracy, detailed calculations are performed for the 2s_{1/2}-1s_{1/2} transition in neutral hydrogen and hydrogen-like ions, and are compared with the theoretical predictions based on the well-established B-spline-basis-set approach.
P. Amaro; A. Surzhykov; F. Parente; P. Indelicato; J. P. Santos
Modeling most likely pathways for smuggling radioactive and special nuclear materials on a worldwide multi-modal transportation network
Nuclear weapons proliferation is an existing and growing worldwide problem. To help with devising strategies and supporting decisions to interdict the transport of nuclear material, we developed the Pathway Analysis, Threat Response and Interdiction Options Tool (PATRIOT) that provides an analytical approach for evaluating the probability that an adversary smuggling radioactive or special nuclear material will be detected during transit. We incorporate a global, multi-modal transportation network, explicit representation of designed and serendipitous detection opportunities, and multiple threat devices, material types, and shielding levels. This paper presents the general structure of PATRIOT, all focuses on the theoretical framework used to model the reliabilities of all network components that are used to predict the most likely pathways to the target.
Saeger, Kevin J [Los Alamos National Laboratory; Cuellar, Leticia [Los Alamos National Laboratory
Modeling most likely pathways for smuggling radioactive and special nuclear materials on a worldwide multimodal transportation network
Nuclear weapons proliferation is an existing and growing worldwide problem. To help with devising strategies and supporting decisions to interdict the transport of nuclear material, we developed the Pathway Analysis, Threat Response and Interdiction Options Tool (PATRIOT) that provides an analytical approach for evaluating the probability that an adversary smuggling radioactive or special nuclear material will be detected during transit. We incorporate a global, multi-modal transportation network, explicit representation of designed and serendipitous detection opportunities, and multiple threat devices, material types, and shielding levels. This paper presents the general structure of PATRIOT, and focuses on the theoretical framework used to model the reliabilities of all network components that are used to predict the most likely pathways to the target.
Radiative one- and two-electron transitions into the empty K shell of He-like ions
The branching ratios between the single and double electron radiative transitions to empty K shell in He-like ions with 2s2p configuration are evaluated for 15 ions with 4{electric dipole allowed one-electron radiative transitions is negligible, it substantially changes the spin-forbidden rates and the two-electron one-photon transition probabilities. Also, while the single electron transition rates are gauge independent, the correlated double-electron probabilities are found to be gauge sensitive. The probable uncertainties in the computed transition rates have been evaluated by considering the line strengths and the differences between the calculated and experimental transition energies as accuracy indicators. The present results are compared with other available experimental and theoretical data.
Kadrekar, Riddhi; Natarajan, L. [Department of Physics, University of Mumbai, Mumbai 400 098 (India)
What Does Open-Data-Ready Look Like? Jeff Kaplan Senior Consultant, ICT Unit, Open ePolicy Solutions
Does Open-Data-Ready Does Open-Data-Ready Look Like? Jeff Kaplan - Senior Consultant, ICT Unit, Open ePolicy Solutions Email: email@example.com Twitter: @jeffkaplan88 Andrew Stott - UK Transparency Board, former UK Deputy CIO Email: email@example.com Twitter: @DirDigEng Workshop Intro 1. Workshop objective: Tool to assess readiness for an Open Data initiative 2. Why develop it? 3. How to develop it? 4. How to use it? Open Data Ecosystem Open Data Possible Readiness Categories Political leadership * Skills inside government * Skills outside government Policy & Legal Framework Financial requirements & funding * Organization & management in government * State of Data within government Demand for Data / Engagement Technical infrastructure requirements Reuse
KamLAND-experiment and Soliton-like Nuclear Georeactor. Part 1. Comparison of Theory with Experiment
We give an alternative description of the data produced in the KamLAND experiment, assuming the existence of a natural nuclear reactor on the boundary of the liquid and solid phases of the Earth's core. Analyzing the uncertainty of antineutrino spectrum of georeactor origin, we show that the theoretical (which takes into account the soliton-like nuclear georeactor) total reactor antineutrino spectra describe with good accuracy the experimental KamLAND-data over the years of 2002-2007 and 2002-2009, respectively. At the same time the parameters of mixing ({\\Delta}(m21)^2=2.5\\cdot 10^-5 eV^2, tan^2{\\theta}12=0.437) calculated within the framework of georeactor hypothesis substantially differ from the parameters of mixing ({\\Delta}(m21)^2=7.49\\cdot 10^-5 eV^2, tan^2{\\theta}12=0.436) obtained in KamLAND-experiment for total exposure over the period of 2002-2009. By traingulation of KamLAND and Borexino data we have constructed the coordinate location of soliton-like nuclear georeactors on the boundary of the liquid and solid phases of the Earth core. Based on the necessary condition of full synchronization of geological (magnetic) time scale and time evolution of heat power of nuclear georeactor, which plays the role of energy source of the Earth magnetic field, and also the strong negative correlation between magnetic field of the solar tachocline zone and magnetic field of the Earth liquid core (Y-component) we have obtain the estimation of nuclear georeactor average heat power ~30 TW over the years 2002-2009.
V. D. Rusov; D. A. Litvinov; S. Cht. Mavrodiev; E. P. Linnik; V. N. Vaschenko; T. N. Zelentsova; M. E. Beglaryan; V. A. Tarasov; S. A. Chernegenko; V. P. Smolyar; P. O. Molchinikolov; K. K. Merkotan
Comparison of CALIPSO-Like, LaRC, and MODIS Retrievals of Ice-Cloud Properties over SIRTA in France and Florida during CRYSTAL-FACE
This study compares cirrus-cloud properties and, in particular, particle effective radius retrieved by a Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observation (CALIPSO)-like method with two similar methods using Moderate-Resolution ...
M. Chiriaco; H. Chepfer; P. Minnis; M. Haeffelin; S. Platnick; D. Baumgardner; P. Dubuisson; M. McGill; V. No�l; J. Pelon; D. Spangenberg; S. Sun-Mack; G. Wind
Constraints on the Velocity and Spatial Distribution of Helium-like Ions in the Wind of SMC X-1 from Observations with XMM-Newton/RGS
We present here X-ray spectra of the HMXB SMC X-1 obtained in an observation with the XMM observatory beginning before eclipse and ending near the end of eclipse. With the Reflection Grating Spectrometers (RGS) on board XMM, we observe emission lines from hydrogen-like and helium-like ions of nitrogen, oxygen, neon, magnesium, and silicon. Though the resolution of the RGS is sufficient to resolve the helium-like n=2->1 emission into three line components, only one of these components, the intercombination line, is detected in our data. The lack of flux in the forbidden lines of the helium-like triplets is explained by pumping by ultraviolet photons from the B0 star and, from this, we set an upper limit on the distance of the emitting ions from the star. The lack of observable flux in the resonance lines of the helium-like triplets indicate a lack of enhancement due to resonance line scattering and, from this, we derive a new observational constraint on the distribution of the wind in SMC X-1 in velocity and coordinate space. We find that the solid angle subtended by the volume containing the helium-like ions at the neutron star multiplied by the velocity dispersion of the helium-like ions must be less than 4pi steradians km/s. This constraint will be satisfied if the helium-like ions are located primarily in clumps distributed throughout the wind or in a thin layer along the surface of the B0 star.
Patrick S. Wojdowski; Duane A. Liedahl; Timothy R. Kallman
Measurements of the intercombination and forbidden lines from helium-like ions in Tokamaks and Electron Beam Ion Traps
The paper reviews the results from tokamak experiments for the line ratios x/w, y/w, and z/w from helium-like ions with Z in the range from 14 to 28. With exception of the DITE experiments, where these line ratios were found to be in agreement with theoretical predictions, all other tokamak experiments yielded values that were significantly larger than predicted. The reasons for these discrepancies are not yet understood. It is possible that radial profile effects were not properly taken into account in the majority of the tokamak experiments. The paper also gives a short historical review of the X-ray diagnostic developments and also presents very recent data from a new type of X-ray imaging crystal spectrometer, which records spatially resolved spectra with a spatial resolution of about 1 cm in the plasma. These new data can be Abel inverted, so that it will be possible to determine line ratios at each radial position in the plasma. Effects of radial profiles, which may have affected the chord-integrated measurements of the past, will thus be eliminated in the future.
Bitter, M; Hill, K W; von Goeler, S; Stodiek, W; Beiersdorfer, P; Rice, J E; Ince-Cushman, A
Surfactant/detergent titration analysis method and apparatus for machine working fluids, surfactant-containing wastewater and the like
The present invention is an improved method and related apparatus for quantitatively analyzing machine working fluids and other aqueous compositions such as wastewater which contain various mixtures of cationic, neutral, and/or anionic surfactants, soluble soaps, and the like. The method utilizes a single-phase, non-aqueous, reactive titration composition containing water insoluble bismuth nitrate dissolved in glycerol for the titration reactant. The chemical reaction of the bismuth ion and glycerol with the surfactant in the test solutions results in formation of micelles, changes in micelle size, and the formation of insoluble bismuth soaps. These soaps are quantified by physical and chemical changes in the aqueous test solution. Both classical potentiometric analysis and turbidity measurements have been used as sensing techniques to determine the quantity of surfactant present in test solutions. This method is amenable to the analysis of various types of new, in-use, dirty or decomposed surfactants and detergents. It is a quick and efficient method utilizing a single-phase reaction without needing a separate extraction from the aqueous solution. It is adaptable to automated control with simple and reliable sensing methods. The method is applicable to a variety of compositions with concentrations from about 1% to about 10% weight. It is also applicable to the analysis of waste water containing surfactants with appropriate pre-treatments for concentration. 1 fig.
Smith, D.D.; Hiller, J.M.
The chemical evolution of a Milky Way-like galaxy: the importance of a cosmologically motivated infall law
We aim at finding a cosmologically motivated infall law to understand if the LambdaCDM cosmology can reproduce the main chemical characteristics of a Milky Way-like spiral galaxy. In this work we test several different gas infall laws, starting from that suggested in the two-infall model for the chemical evolution of the Milky Way by Chiappini et al., but focusing on laws derived from cosmological simulations which follows a concordance LambdaCDM cosmology. By means of a detailed chemical evolution model for the solar vicinity, we study the effects of the different gas infall laws on the abundance patterns and the G-dwarf metallicity distribution. The cosmological gas infall law predicts two main gas accretion episodes. By means of this cosmologically motivated infall law, we study the star formation rate, the SNIa and SNII rate, the total amount of gas and stars in the solar neighbourhood and the behaviour of several chemical abundances. We find that the results of the two-infall model are fully compatible with the evolution of the Milky Way with cosmological accretion laws. A gas assembly history derived from a DM halo, compatible with the formation of a late-type galaxy from the morphological point of view, can produce chemical properties in agreement with the available observations.
Edoardo Colavitti; Francesca Matteucci; Giuseppe Murante
Development of a mirror-based endoscope for divertor spectroscopy on JET with the new ITER-like wall (invited)
A new endoscope with optimised divertor view has been developed in order to survey and monitor the emission of specific impurities such as tungsten and the remaining carbon as well as beryllium in the tungsten divertor of JET after the implementation of the ITER-like wall in 2011. The endoscope is a prototype for testing an ITER relevant design concept based on reflective optics only. It may be subject to high neutron fluxes as expected in ITER. The operating wavelength range, from 390 nm to 2500 nm, allows the measurements of the emission of all expected impurities (W I, Be II, C I, C II, C III) with high optical transmittance ({>=}30% in the designed wavelength range) as well as high spatial resolution that is {ITER relevant shutter system based on pneumatic techniques has been developed and integrated into the endoscope head. The endoscope is equipped with four digital CCD cameras, each combined with two filter wheels for narrow band interference and neutral density filters. Additionally, two protection cameras in the {lambda} > 0.95 {mu}m range have been integrated in the optical design for the real time wall protection during the plasma operation of JET.
Huber, A.; Brezinsek, S.; Mertens, Ph.; Schweer, B.; Sergienko, G.; Terra, A.; Clever, M.; Lambertz, H. T.; Samm, U. [Institute of Energy and Climate Research - Plasma Physics, Forschungszentrum Juelich, EURATOM Association, Trilateral Euregio Cluster, D-52425 Juelich (Germany); Arnoux, G.; Balshaw, N.; Edlingdon, T.; Farthing, J.; Matthews, G. F.; Riccardo, V.; Sanders, S.; Stamp, M.; Williams, J.; Zastrow, K. D. [Euratom/CCFE Fusion Association, Culham Science Centre, Abingdon, OX14 3DB (United Kingdom); Egner, S. [Kayser-Threde GmbH, D-81379 Munich (Germany); and others
Free-riding on BitTorrent-like peer-to-peer file sharing systems: Modeling analysis and improvement
Abstract�BitTorrent has emerged as a very popular peer-to-peer file sharing system, which uses an embedded set of incentive mechanisms to encourage contribution and prevent free-riding. However, BitTorrent�s ability to prevent free-riding needs further study. In this paper, we present a fluid model with two different classes of peers to capture the effect of free-riding on BitTorrent-like systems. With the model, we find that BitTorrent�s incentive mechanism is successful in preventing free-riding in a system without seeds but may not succeed in producing a disincentive for free-riding in a system with a high number of seeds. The reason for this is that BitTorrent does not employ any effective mechanisms for seeds to effectively guard against free-riding. Therefore, we propose a seed bandwidth allocation strategy for the BitTorrent system to reduce the effect of seeds on free-riding. Finally, simulation results are given that validate what we have found in our analysis and demonstrate the effectiveness of the proposed strategy. Index Terms�Bandwidth allocation strategy, BitTorrent, free-riding, incentive mechanism, modeling. �
Minglu Li; Jiadi Yu; Jie Wu; Senior Member
A Failure of Serendipity: the Square Kilometre Array will struggle to eavesdrop on Human-like ETI
The Square Kilometre Array (SKA) will operate in frequency ranges often used by military radar and other communications technology. It has been shown that if Extraterrestrial Intelligences (ETIs) communicate using similar technology, then the SKA should be able to detect such transmissions up to distances of ~100 pc (~300 light years) from Earth. However, Mankind has greatly improved its communications technology over the last century, dramatically reducing signal leakage and making the Earth "radio quiet". If ETIs follow the same pattern as the human race, will we be able to detect their signal leakage before they become radio quiet? We investigate this question using Monte Carlo Realisation techniques to simulate the growth and evolution of intelligent life in the Galaxy. We show that if civilisations are "human" in nature (i.e. they are only "radio loud" for ~100 years, and can only detect each other with an SKA-like instrument out to 100 pc, within a maximum communication time of 100 years), then the prob...
Forgan, D H
Functionalization of Hydrogen-free Diamond-like Carbon Films using Open-air Dielectric Barrier Discharge Atmospheric Plasma Treatments
A dielectric barrier discharge (DBD) technique has been employed to produce uniform atmospheric plasmas of He and N2 gas mixtures in open air in order to functionalize the surface of filtered-arc deposited hydrogen-free diamond-like carbon (DLC) films. XPS measurements were carried out on both untreated and He/N2 DBD plasma treated DLC surfaces. Chemical states of the C 1s and N 1s peaks were collected and used to characterize the surface bonds. Contact angle measurements were also used to record the short- and long-term variations in wettability of treated and untreated DLC. In addition, cell viability tests were performed to determine the influence of various He/N2 atmospheric plasma treatments on the attachment of osteoblast MC3T3 cells. Current evidence shows the feasibility of atmospheric plasmas in producing long-lasting variations in the surface bonding and surface energy of hydrogen-free DLC and consequently the potential for this technique in the functionalization of DLC coated devices.
Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA; Instituto de Materiales de Madrid, C.S.I.C., Cantoblanco, 28049 Madrid, Spain; Instituto de Quimica-Fisica" Rocasolano" C.S.I.C., 28006 Madrid, Spain; Mahasarakham University, Mahasarakham 44150, Thailand; CASTI, CNR-INFM Regional Laboratory, L' Aquila 67100, Italy; SUNY Upstate Medical University, Syracuse, NY 13210, USA; Endrino, Jose; Endrino, J. L.; Marco, J. F.; Poolcharuansin, P.; Phani, A.R.; Allen, M.; Albella, J. M.; Anders, A.
Superhard behaviour, low residual stress, and unique structure in diamond-like carbon films by simple bilayer approach
Simple bilayer approach is proposed for synthesizing hard and superhard diamond-like carbon (DLC) coatings with reduced residual stress. For this, M/DLC bilayer (M = Ti and Cu) structures are grown using hybrid system involving radio frequency (RF)-sputtering and RF-plasma enhanced chemical vapor deposition techniques. Ti/DLC bilayer deposited at negative self bias of 100 V shows superhard behaviour with hardness (H) as 49 GPa. Cu/DLC bilayer grown at self bias of 100 V exhibits hard behaviour with H as 22.8 GPa. The hardness of Ti/DLC (Cu/DLC) bilayer gets changed from superhard (hard) to hard (moderate hard) regime, when the self bias is raised to 300 V. Residual stress in Ti/DLC (Cu/DLC) bilayer is found to be significantly low that varies in the range of 1 GPa-1.65 GPa (0.8 GPa-1.6 GPa). The microstructure and morphology are studied by Raman spectroscopy, scanning electron microscopy (SEM), and atomic force microscopy (AFM). SEM and AFM pictures reveal the creation of nanostructured features in the deposited bilayers. Raman, SEM, and AFM analyses are correlated with the nano-mechanical properties. Owing to excellent nano-mechanical properties, these bilayers can find their direct industrial applications as hard and protective coatings.
Dwivedi, Neeraj [Physics of Energy Harvesting Division, National Physical Laboratory (CSIR), KS Krishnan Road, New Delhi 110 012 (India); Department of Physics, Indian Institute of Technology Delhi, New Delhi 110 016 (India); Kumar, Sushil [Physics of Energy Harvesting Division, National Physical Laboratory (CSIR), KS Krishnan Road, New Delhi 110 012 (India); Malik, Hitendra K. [Department of Physics, Indian Institute of Technology Delhi, New Delhi 110 016 (India)
Pyrovanadolysis: a Pyrophosphorolysis-like Reaction Mediated by Pyrovanadate MN2plus and DNA Polymerase of Bacteriophage T7
DNA polymerases catalyze the 3'-5'-pyrophosphorolysis of a DNA primer annealed to a DNA template in the presence of pyrophosphate (PP{sub i}). In this reversal of the polymerization reaction, deoxynucleotides in DNA are converted to deoxynucleoside 5'-triphosphates. Based on the charge, size, and geometry of the oxygen connecting the two phosphorus atoms of PP{sub i}, a variety of compounds was examined for their ability to carry out a reaction similar to pyrophosphorolysis. We describe a manganese-mediated pyrophosphorolysis-like activity using pyrovanadate (VV) catalyzed by the DNA polymerase of bacteriophage T7. We designate this reaction pyrovanadolysis. X-ray absorption spectroscopy reveals a shorter Mn-V distance of the polymerase-VV complex than the Mn-P distance of the polymerase-PP{sub i} complex. This structural arrangement at the active site accounts for the enzymatic activation by Mn-VV. We propose that the Mn{sup 2+}, larger than Mg{sup 2+}, fits the polymerase active site to mediate binding of VV into the active site of the polymerase. Our results may be the first documentation that vanadium can substitute for phosphorus in biological processes.
B Akabayov; A Kulczyk; S Akabayov; C Thiele; L McLaughlin; B Beauchamp; C Richardson
The present invention is an improved method and related apparatus for quantitatively analyzing machine working fluids and other aqueous compositions such as wastewater which contain various mixtures of cationic, neutral, and/or anionic surfactants, soluble soaps, and the like. The method utilizes a single-phase, non-aqueous, reactive titration composition containing water insoluble bismuth nitrate dissolved in glycerol for the titration reactant. The chemical reaction of the bismuth ion and glycerol with the surfactant in the test solutions results in formation of micelles, changes in micelle size, and the formation of insoluble bismuth soaps. These soaps are quantified by physical and chemical changes in the aqueous test solution. Both classical potentiometric analysis and turbidity measurements have been used as sensing techniques to determine the quantity of surfactant present in test solutions. This method is amenable to the analysis of various types of new, in-use, dirty or decomposed surfactants and detergents. It is a quick and efficient method utilizing a single-phase reaction without needing a separate extraction from the aqueous solution. It is adaptable to automated control with simple and reliable sensing methods. The method is applicable to a variety of compositions with concentrations from about 1% to about 10% weight. It is also applicable to the analysis of waste water containing surfactants with appropriate pre-treatments for concentration.
Smith, Douglas D. (Knoxville, TN); Hiller, John M. (Oak Ridge, TN)
Optimization of Optical and Electronic properties of Carbon Fullerenes: Symmetry-Reduced C60 and Dumbbell-Like Novel Structures
Using quantum chemical density functional calculations, we study two possible pathways for manipulating the optical and electronic properties of all-carbon fullerenes structures. In the first, the optical properties of C{sub 60} are shown to be enhanced via reduction of the perfectly spherical Ih symmetry structure to energetically feasible lower symmetries. A D{sub 3d} symmetry structure of C{sub 60} proved to be 39 meV lower in energy than the Ih conformation. This reduction in symmetry activates otherwise silent modes in the IR and Raman spectra, possibly achievable via solvation effects. In the second pathway, fusing a building block of an-all carbon hexagonal unit as a connector between two C{sub 60} cages is considered. Optimizations on a resulting series of dumbbell-like structures, molecular C{sub 126}, C{sub 132}, C{sub 138}, C{sub 144}, and C{sub 180}, impart distinct variation in the electronic properties of these novel structures with size. These structures are further shown to support stable anionic radical forms.
Manaa, M R
On generation of Alfvenic-like fluctuations by drift wave-zonal flow system in large plasma device experiments
According to recent experiments, magnetically confined fusion plasmas with ''drift wave-zonal flow turbulence'' (DW-ZF) give rise to broadband electromagnetic waves. Sharapov et al. [Europhysics Conference Abstracts, 35th EPS Conference on Plasma Physics, Hersonissos, 2008, edited by P. Lalousis and S. Moustaizis (European Physical Society, Switzerland, 2008), Vol. 32D, p. 4.071] reported an abrupt change in the magnetic turbulence during L-H transitions in Joint European Torus [P. H. Rebut and B. E. Keen, Fusion Technol. 11, 13 (1987)] plasmas. A broad spectrum of Alfvenic-like (electromagnetic) fluctuations appears from ExB flow driven turbulence in experiments on the large plasma device (LAPD) [W. Gekelman et al., Rev. Sci. Instrum. 62, 2875 (1991)] facility at UCLA. Evidence of the existence of magnetic fluctuations in the shear flow region in the experiments is shown. We present one possible theoretical explanation of the generation of electromagnetic fluctuations in DW-ZF systems for an example of LAPD experiments. The method used is based on generalizing results on shear flow phenomena from the hydrodynamics community. In the 1990s, it was realized that fluctuation modes of spectrally stable nonuniform (sheared) flows are non-normal. That is, the linear operators of the flows modal analysis are non-normal and the corresponding eigenmodes are not orthogonal. The non-normality results in linear transient growth with bursts of the perturbations and the mode coupling, which causes the generation of electromagnetic waves from the drift wave-shear flow system. We consider shear flow that mimics tokamak zonal flow. We show that the transient growth substantially exceeds the growth of the classical dissipative trapped-particle instability of the system.
Horton, W.; Correa, C. [Institute for Fusion Studies, The University of Texas at Austin, Austin, Texas 78712 (United States); Chagelishvili, G. D.; Avsarkisov, V. S.; Lominadze, J. G. [Georgian National Astrophysical Observatory, The Chavchavadze State University, Tbilisi 0160, Georgia and M. Nodia Institute of Geophysics, Tbilisi 0193, Georgia (United States); Perez, J. C.; Kim, J.-H. [Department of Physics, University of Wisconsin-Madison, Madison, Wisconsin 53706 (United States); Carter, T. A. [Department of Physics, University of California, Los Angeles, California 90095 (United States)
First lower limits on the photon-axion-like particle coupling from very high energy gamma-ray observation
The intrinsic flux of very high energy (VHE, Energy > 100 GeV) gamma-rays from extragalactic sources is attenuated due to pair production in the interaction with photons of the extragalactic background light (EBL). Depending on the distance of the source, the Universe should be opaque to VHE photons above a certain energy. However, indications exist that the Universe is more transparent than previously thought. A recent statistical analysis of a large sample of VHE spectra shows that the correction for absorption with current EBL models is too strong for the data points with the highest attenuation. An explanation might be the oscillation of VHE photons into hypothetical axion-like particles (ALPs) in ambient magnetic fields. This mechanism would decrease the opacity as ALPs propagate unimpeded over cosmological distances. Here, a large sample of VHE gamma-ray spectra obtained with imaging air Cherenkov telescopes is used to set, for the first time, lower limits on the photon-ALP coupling constant over a large range of ALP masses. The conversion in different magnetic field configurations, including intra-cluster and intergalactic magnetic fields together with the magnetic field of the Milky Way, is investigated taking into account the energy dependence of the oscillations. For optimistic scenarios of the intervening magnetic fields, a lower limit on the photon-ALP coupling of the order of $10^{-12}\\mathrm{GeV}^{-1}$ is obtained whereas more conservative model assumptions result in $2\\times10^{-11}\\mathrm{GeV}^{-1}$. The latter value is within reach of future dedicated ALP searches.
Manuel Meyer; Dieter Horns; Martin Raue
Formation, characterization and dynamics of onion like carbon structures from nanodiamonds using reactive force-fields for electrical energy storage
We simulate the experimentally observed graphitization of nanodiamonds into multi-shell onion-like carbon nanostructures, also called carbon onions, at different temperatures, using reactive force fields. The simulations include long-range Coulomb and van der Waals interactions. Our results suggest that long-range interactions play a crucial role in the phase-stability and the graphitization process. Graphitization is both enthalpically and entropically driven and can hence be controlled with temperature. The outer layers of the nanodiamond have a lower kinetic barrier toward graphitization irrespective of the size of the nanodiamond and graphitize within a few-hundred picoseconds, with a large volume increase. The inner core of the nanodiamonds displays a large size-dependent kinetic barrier, and graphitizes much more slowly with abrupt jumps in the internal energy. It eventually graphitizes by releasing pressure and expands once the outer shells have graphitized. The degree of transformation at a particular temperature is thereby determined by a delicate balance between the thermal energy, long-range interactions, and the entropic/enthalpic free energy gained by graphitization. Upon full graphitization, a multi-shell carbon nanostructure appears, with a shell-shell spacing of about {approx}3.4 {angstrom} for all sizes. The shells are highly defective with predominantly five- and seven-membered rings to curve space. Larger nanodiamonds with a diameter of 4 nm can graphitize into spiral structures with a large ({approx}29-atom carbon ring) pore opening on the outermost shell. Such a large one-way channel is most attractive for a controlled insertion of molecules/ions such as Li ions, water, or ionic liquids, for increased electrochemical capacitor or battery electrode applications.
Kent, Paul R [ORNL
Cost Comparison of Collaborative and IPD-like Project Delivery Methods Versus Competitive Non-collaborative Project Delivery Methods
Collaborative project delivery methods are believed to contribute to faster completions times, lower overall project costs and higher quality. Contracts are expected to influence the degree of collaboration on a given project since they allow or restrict certain lines of communication in the decision making process. Various delivery systems rank differently on the spectrum of collaboration. Because collaborative project delivery methods require owners and AEC stakeholders to meet frequently early in the delivery process, they are thought to add additional upfront costs to the project. The purpose of this study is to test if collaborative project delivery methods impart enough value so that the upfront cost incurred at the beginning of project is eventually surpassed by realized savings. Ideally, the extreme forms of project delivery methods, that is, Integrated Project Delivery (IPD) and Design-Bid-Build (DBB), should be compared to test the effects of collaboration on benefits to the owner. Due to difficulty in obtaining data on IPD and similarly scaled DBB projects, for this study, their close cousins, CM-at-Risk (CMR) and Competitive Sealed Proposal (CSP) were compared. The study engaged statistical comparison of cost of change orders and overall project cost performance of 17 CMR and 13 CSP projects of similar scales by same owner. Project cost performance observed under CMR projects was found significantly more than those under CSP. This study is expected to help boost confidence in the benefits of collaborative project delivery methods. It is likely that the results will encourage acceptance of IPD for public projects. Owners who were previously discouraged by the increased upfront cost of collaborative projects may also find interest in the results of this study.
Kulkarni, Aditi
Genetic and Phylogenetic Studies of Toll-Like Receptor 5 (TLR5) in River Buffalo (Bubalus Bubalis)
River buffalo are economically important to many countries and only recently has their genome been explored for the purpose of mapping genetic variation in traits of economic and biologic interest. The purpose of this research is to characterize the genetic and evolutionary profile of Toll-like receptor 5 (TLR5), which mediates the mammalian innate immune response to bacterial flagellin. This study is comprised of three parts: 1) generating a radiation hybrid (RH) map of river buffalo chromosome 5 (BBU5) where the TLR5 gene is located and building a comparative map with homologous cattle chromosomes; 2) conducting a single-nucleotide polymorphism (SNP) survey of the TLR5 gene to reveal variation within river buffalo and other species; and 3) performing an evolutionary study by inferring phylogenetic trees of TLR5 across multiple taxa and determining the possible evolutionary constraints within the TLR5 coding region. River buffalo chromosome 5 is a bi-armed chromosome with arms corresponding to cattle chromosomes 16 and 29. A BBU5 RH map was developed using the previously published river buffalo RH mapping panel and cattle-derived markers. The RH map developed in this study became an integral part of the first river buffalo whole genome RH map. Genetic variation of the TLR5 gene was evaluated in a small domestic herd of river buffalo. Sequencing of the TLR5 coding region and partial associated 5'- and 3'-untranslated regions yielded 16 novel SNPs. Six SNPs were identified as non-synonymous with one predicted to potentially code for a functionally altered product. For the evolutionary study of the TLR5 coding region, phylogenetic trees were inferred based on TLR5 variation across multiple orders and another for artiodactyla. Species that are closely related to river buffalo appear to have undergone negative selection in TLR5 while those that diverged from river buffalo earlier may be retaining alleles that river buffalo are removing from the population. In conclusion, putative chromosomal rearrangements were identified between river buffalo and cattle, the variation that was uncovered in the TLR5 coding region could potentially lead to differential immunity across species, and there appears be some evolutionary flexibility in the DNA sequence of the TLR5 coding region.
Jones, Brittany
Self-assembly of Fe{sub 3}O{sub 4} nanocrystal-clusters into cauliflower-like architectures: Synthesis and characterization
Large-scale cauliflower-like Fe{sub 3}O{sub 4} architectures consist of well-assembled magnetite nanocrystal clusters have been synthesized by a simple solvothermal process. The as-synthesized Fe{sub 3}O{sub 4} samples were characterized by XRD, XPS, FT-IR, SEM, TEM, etc. The results show that the samples exhibit cauliflower-like hierarchical microstructures. The influences of synthesis parameters on the morphology of the samples were experimentally investigated. Magnetic properties of the Fe{sub 3}O{sub 4} cauliflower-like hierarchical microstructures have been detected by VSM at room temperature, showing a relatively low saturation magnetization of 65 emu/g and an enhanced coercive force of 247 Oe. - Graphical Abstract: Cauliflower-like Fe{sub 3}O{sub 4} architectures consist of well-assembled magnetite nanocrystal clusters have been synthesized by a simple solvothermal process, using FeCl{sub 3}.6H{sub 2}O and EDA as the starting materials. Highlights: > Cauliflower-like Fe{sub 3}O{sub 4} architectures were successfully prepared by a simple solvothermal route. > The cauliflower-like Fe{sub 3}O{sub 4} architectures have a size in the range of 200-300 nm. > They show a low saturation magnetization of 65 emu/g and an enhanced coercive force of 247 Oe. > These Fe{sub 3}O{sub 4} architectures may have potential applications in catalysis and biological fields.
Zhu Luping, E-mail: email@example.com [School of Urban Development and Environmental Engineering, Shanghai Second Polytechnic University, Shanghai 201209 (China); Liao Guihong [Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190 (China); Bing Naici; Wang Linlin; Xie Hongyong [School of Urban Development and Environmental Engineering, Shanghai Second Polytechnic University, Shanghai 201209 (China)
A Lifecycle Emissions Model (LEM): Lifecycle Emissions from Transportation Fuels, Motor Vehicles, Transportation Modes, Electricity Use, Heating and Cooking Fuels, and Materials, APPENDIX A: Energy Use and Emissions from the Lifecycle of Diesel-Like Fuels Derived From Biomass
LIKE FUELS DERIVED FROM BIOMASS An Appendix to the Report, �LIKE FUELS DERIVED FROM BIOMASS An Appendix to the Report �AFUEL Transesterified, biomass-derived oil or biodiesel can
Delucchi, Mark; Lipman, Timothy
Cosmological evolution of the cosmological plasma with interpartial scalar interaction. III. Model with the attraction of the like scalar charged particles
On the basis of the relativistic kinetic theory the mathematical model of cosmological plasmas with an attraction of the like charged scalar particles is formulated. It is shown, that cosmological the model, based on a classical scalar field with an attraction, is unsatisfactory, that leads to necessity of attraction of phantom models of a scalar field for systems with an attraction.
Yu. G. Ignat'ev
Search for heavy vector-like quarks coupling to light quarks in proton-proton collisions at root s=7 TeV with the ATLAS detector
This Letter presents a search for singly produced vector-like quarks, Q, coupling to light quarks, q. The search is sensitive to both charged current (CC) and neutral current (NC) processes, pp {yields} Qq {yields} Wqq{prime} and pp {yields} Qq {yields} Zqq{prime} with a leptonic decay of the vector gauge boson. In 1.04 fb{sup -1} of data taken in 2011 by the ATLAS experiment at a center-of-mass energy {radical}s = 7 TeV, no evidence of such heavy vector-like quarks is observed above the expected Standard Model background. Limits on the heavy vector-like quark production cross section times branching ratio as a function of mass m{sub Q} are obtained. For a coupling {kappa}{sub qQ} = v/m{sub Q}, where v is the Higgs vacuum expectation value, 95% C.L. lower limits on the mass of a vector-like quark are set at 900 GeV and 760 GeV from CC and NC processes, respectively.
Aad G.; Abbott, B.; Abdallah, J.; Khalek, S. Abdel; Abdelalim, A. A.; Abdesselam, A.; Abdinov, O.; Abi, B.; Abolins, M.; AbouZeid, O. S. s; Abramowicz, H.; Abreu, H.; Acerbi, E.; Acharya, B. S.; Adamczyk, L.; Adams, D. L.; Addy, T. N.; Adelman, J.; et al.
Dynamic Instabilities of Simulated Hurricane-like Vortices and Their Impacts on the Core Structure of Hurricanes. Part II: Moist Experiments
The energy flows of a simulated moist hurricane-like vortex are analyzed to examine the processes that change the intensity and structure of tropical cyclones. The moist vortex used in this study is initially axisymmetric on an f plane and is ...
Young C. Kwon; William M. Frank
State Selective Electron Capture Studies:The Contribution of M1-and E2-Transitions to the Lyman Radiation of H-like Uranium
Radiation of H-like Uranium Th. Sto« hlker,1;2 F. Bosch,2 R. W. Dunford,3 C. Kozhuharov,2 T. Ludziejewski,2 to decelerate highly charged ions up to bare uranium to energies which are far below the energy required for decelerated bare uranium ion are discussed and their relevance for Lamb shift investigations on high
EIS-0375: Disposal of Greater-than-Class-C Low-Level Radioactive Waste and Department of Energy GTCC-like Waste
Energy.gov (U.S. Department of Energy (DOE))
This EIS evaluates the reasonably foreseeable environmental impacts associated with the proposed development, operation, and long-term management of a disposal facility or facilities for Greater-Than-Class C (GTCC) low-level radioactive waste and GTCC-like waste. The Environmental Protection Agency is a cooperating agency in the preparation of this EIS.
How do high tides and low tides occur? Is it possible to have an Earth-like planet orbiting a multiple-star system?
LED lights that make them more efficient and longer lasting than incandescent bulbs? Why is it that some people see rays of light emanate outward from certain light sources, such as streetlights or headlights on cars? Is it possible to use light/x rays to see through walls and other solid objects? (like x
Redner, Sidney
Simulating the Fate of an Earth-like Planet Inclined to the Ecliptic Plane to Improve Understanding of Planetary System Formation
The formation of our Earth and Solar System has befuddled humankind for centuries. Although there remain a number of peculiarities to be remedied by the currently held nebular theory of Solar System formation, there exists a widely held convergence on the basic components of planetary formation. Interactions with the giant planets of our system, as well as heavy bombardment that occurred billions of years ago, played major roles in early Solar System formation and continue to shape its dynamics through huge gravitational perturbations. In order to better understand the effect that planetary giants have on bodies within our Solar System, this paper proposes to simulate the n-body problem for the Sun-Jupiter-Earth system so as to quantify the effect that a Jupiter giant would have on an Earth-like planet inclined to the ecliptic planet. Through iteration of the Earth-like planet�s inclination, the maximum angle of inclination before ejection from the Solar System can be found. Using only Newtonian forces for the three-body problem, the simulation runs using a Runge-Kutta 4 solver to plot each body�s position, velocity, and acceleration against time. These results give new insight into why our Solar System lies primarily in the ecliptic disc and how its dynamics will continue to vary over time. For the Sun-Earth-Jupiter system simulated in this paper (run over 119,000 years), orbits inclined to the ecliptic plane greater than 50� became unstable, with Earth ejection after 62,000 years (85�). Furthermore, simulation of other solar systems leads to a more general theory on the impact of planetary formation and heavy bombardment on the fate of Earth-like planets elsewhere in the Universe. For the exoplanetary system simulated in this paper, which includes a hot Jupiter at 1.5 AU and an Earth-like planet at 1 AU (run over 94,000 years), orbits inclined to the ecliptic plane greater than 10� became unstable, with Earth ejection after 6,250 years (50�). Thus, as the Jupiter giant is moved inward, its influence over the Earth-like planet increases and the time to orbital decay of the Earth-like planet decreases. Overall, these results illustrate that the orbits of Earth-like planets in systems with Jupiter giants have restrictions on available orbital inclinations to remain stable.
Nichols, Kristin
Toward high-precision values of the self energy of non-S states in hydrogen and hydrogen-like ions
The method and status of a study to provide numerical, high-precision values of the self-energy level shift in hydrogen and hydrogen-like ions is described. Graphs of the self energy in hydrogen-like ions with nuclear charge number between 20 and 110 are given for a large number of states. The self-energy is the largest contribution of Quantum Electrodynamics (QED) to the energy levels of these atomic systems. These results greatly expand the number of levels for which the self energy is known with a controlled and high precision. Applications include the adjustment of the Rydberg constant and atomic calculations that take into account QED effects.
Eric-Olivier Le Bigot; Ulrich D. Jentschura; Paul Indelicato; Peter J. Mohr
Reducing volatilization of heavy metals in phosphate-pretreated municipal solid waste incineration fly ash by forming pyromorphite-like minerals
This research investigated the feasibility of reducing volatilization of heavy metals (lead, zinc and cadmium) in municipal solid waste incineration (MSWI) fly ash by forming pyromorphite-like minerals via phosphate pre-treatment. To evaluate the evaporation characteristics of three heavy metals from phosphate-pretreated MSWI fly ash, volatilization tests have been performed by means of a dedicated apparatus in the 100-1000 deg. C range. The toxicity characteristic leaching procedure (TCLP) test and BCR sequential extraction procedure were applied to assess phosphate stabilization process. The results showed that the volatilization behavior in phosphate-pretreated MSWI fly ash could be reduced effectively. Pyromorphite-like minerals formed in phosphate-pretreated MSWI fly ash were mainly responsible for the volatilization reduction of heavy metals in MSWI fly ash at higher temperature, due to their chemical fixation and thermal stabilization for heavy metals. The stabilization effects were encouraging for the potential reuse of MSWI fly ash.
Sun Ying; Zheng Jianchang [School of Environmental and Chemical Engineering, Shanghai University, Shanghai 200444 (China); Zou Luquan [Shanghai Center of Solid Waste Disposal, Shanghai (China); Liu Qiang; Zhu Ping [School of Environmental and Chemical Engineering, Shanghai University, Shanghai 200444 (China); Qian Guangren, E-mail: email@example.com [School of Environmental and Chemical Engineering, Shanghai University, Shanghai 200444 (China)
Methods of Using Existing Wire Lines (power lines, phone lines, internet lines) for Totally Secure Classical Communication Utilizing Kirchoff's Law and Johnson-like Noise
We outline some general solutions to use already existing and currently used wire lines, such as power lines, phone lines, internet lines, etc, for the unconditionally secure communication method based on Kirchoff's Law and Johnson-like Noise (KLJN). Two different methods are shown. One is based on filters used at single wires and the other one utilizes a common mode voltage superimposed on a three-phase powerline.
Laszlo B. Kish
Large-scale controllable synthesis of dumbbell-like BiVO{sub 4} photocatalysts with enhanced visible-light photocatalytic activity
The controllable synthesis of novel dumbbell-like BiVO{sub 4} hierarchical nanostructures has been successfully obtained via a simple hydrothermal route. The as-synthesized products were studied by X-ray powder diffraction, scanning electron microscopy, transmission electron microscopy and UV-vis absorption spectroscopy. The results showed that the nucleation and growth of the nanodumbbells were governed by an oriented aggregation growth mechanism. It is noteworthy that the concentration of poly(vinyl pyrrolidone) and the volume ratio of H{sub 2}O to CH{sub 3}COOH were crucial to the growth of the final nanoarchitectures. Control experiments were also carried out to investigate the factors which impact on the morphology of the products. Furthermore, the as-prepared BiVO{sub 4} hierarchical nanostructures demonstrated the superior visible-light-driven photocatalytic efficiency, which is helpful for the separation and recycle considering their promising applications in harmful pollutants disposal. - Graphical Abstract: The controllable synthesis of novel dumbbell-like BiVO{sub 4} hierarchical nanostructures has been successfully obtained via a simple hydrothermal route; the as-prepared BiVO{sub 4} hierarchical nanostructures demonstrated the superior visible-light-driven photocatalytic efficiency. Highlights: Black-Right-Pointing-Pointer Dumbbell-like BiVO{sub 4} structures were synthesized and characterized for the first time. Black-Right-Pointing-Pointer The volume ratios of H{sub 2}O to CH{sub 3}COOH were crucial to the final morphologies. Black-Right-Pointing-Pointer Their photocatalytic activity was up to 90% under visible-light irradiation. Black-Right-Pointing-Pointer Dumbbell-like BiVO{sub 4} structures may utilize the pollutant disposal.
Lu Yang [Department of Physics and Electronic Engineering, Xinyang Normal University, Xinyang 464000 (China); Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190 (China); Luo Yongsong, E-mail: email@example.com [Department of Physics and Electronic Engineering, Xinyang Normal University, Xinyang 464000 (China); Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190 (China); Kong Dezhi; Zhang Deyang; Jia Yonglei; Zhang Xinwei [Department of Physics and Electronic Engineering, Xinyang Normal University, Xinyang 464000 (China)
Terrace-like structure in the above-threshold ionization spectrum of an atom in an IR+XUV two-color laser field
Based on the frequency-domain theory, we investigate the above-threshold ionization (ATI) process of an atom in a two-color laser field with infrared (IR) and extreme ultraviolet (XUV) frequencies, where the photon energy of the XUV laser is close to or larger than the atomic ionization threshold. By using the channel analysis, we find that the two laser fields play different roles in an ionization process, where the XUV laser determines the ionization probability by the photon number that the atom absorbs from it, while the IR laser accelerates the ionized electron and hence widens the electron kinetic energy spectrum. As a result, the ATI spectrum presents a terrace-like structure. By using the saddle-point approximation, we obtain a classical formula which can predict the cutoff of each plateau in the terrace-like ATI spectrum. Furthermore, we find that the difference of the heights between two neighboring plateaus in the terrace-like structure of the ATI spectrum increases as the frequency of the XUV lase...
Zhang, Kui; Fu, Panming; Yan, Zong-Chao; Wang, Bingbing
Relativistic many-body calculations of lifetimes, rates, and line strengths of multipole transitions between 3l-1 4l' states in Ni-like ions
Transition rates and line strengths are calculated for electric-multipole (E2 and E3) and magnetic-multipole (M1, M2, and M3) transitions between 3s{sup 2}3p{sup 6}3d{sup 10}, 3s{sup 2}3p{sup 6}3d{sup 9}4l, 3s{sup 2}3p{sup 5}3d{sup 10}4l, and 3s3p{sup 6}3d{sup 10}4l states (with 4l = 4s, 4p, 4d, and 4f) in Ni-like ions with the nuclear charges ranging from Z = 34 to 100. Relativistic many-body perturbation theory (RMBPT), including the Breit interaction, is used to evaluate retarded multipole matrix elements. Transition energies used in the calculation of line strengths and transition rates are from second-order RMBPT. Lifetimes of the 3s{sup 2}3p{sup 6}3d{sup 9}4s levels are given for Z = 34-100. Taking into account that calculations were performed in a very broad range of Z, most of the data are presented in graphs as Z-dependencies. The full set of data is given only for Ni-like W ion. In addition, we also give complete results for the 3d4s{sup 3}D{sub 2}-3d4s {sup 3}D{sub 1} magnetic-dipole transition, as the transition may be observed in future experiments, which measure both transition energies and radiative rates. These atomic data are important in the modeling of radiation spectra from Ni-like multiply-charged ions generated in electron beam ion trap experiments as well as for laboratory plasma diagnostics including fusion research.
Safronova, U I; Safronova, A S; Beiersdorfer, P
A MAGNETAR-LIKE EVENT FROM LS I +61 Degree-Sign 303 AND ITS NATURE AS A GAMMA-RAY BINARY
We report on the Swift Burst Alert Telescope detection of a short burst from the direction of the TeV binary LS I +61 Degree-Sign 303, resembling those generally labeled as magnetar-like. We show that it is likely that the short burst was indeed originating from LS I +61 Degree-Sign 303 (although we cannot totally exclude the improbable presence of a far-away, line-of-sight magnetar) and that it is a different phenomenon with respect to the previously observed ks-long flares from this system. Accepting the hypothesis that LS I +61 Degree-Sign 303 is the first magnetar detected in a binary system, we study those implications. We find that a magnetar-composed LS I +61 Degree-Sign 303 system would most likely be (i.e., for the usual magnetar parameters and mass-loss rate) subject to a flip-flop behavior, from a rotationally powered regime (in the apastron) to a propeller regime (in the periastron) along each of the LS I +61 Degree-Sign 303 eccentric orbital motion. We prove that, unlike near an apastron, where an interwind shock can lead to the normally observed LS I +61 Degree-Sign 303 behavior, during TeV emission the periastron propeller is expected to efficiently accelerate particles only to sub-TeV energies. This flip-flop scenario would explain the system's behavior when a recurrent TeV emission only appears near the apastron, the anti-correlation of the GeV and TeV emission, and the long-term TeV variability (which seems correlated to LS I +61 Degree-Sign 303's super-orbital period), including the appearance of a low TeV state. Finally, we qualitatively put the multi-wavelength phenomenology into the context of our proposed model and make some predictions for further testing.
Torres, Diego F.; Rea, Nanda [Institut de Ciencies de l'Espai (IEEC-CSIC), Campus UAB, Torre C5, 2a planta, 08193 Barcelona (Spain); Esposito, Paolo [INAF, Osservatorio Astronomico di Cagliari, localita Poggio dei Pini, strada 54, I-09012 Capoterra (Italy); Li Jian; Chen Yupeng; Zhang Shu [Key Laboratory of Particle Astrophysics, Institute of High Energy Physics, Chinese Academy of Science, Beijing 100049 (China)
Oscillating stars in binary systems are among the most interesting stellar laboratories, as these can provide information on the stellar parameters and stellar internal structures. Here we present a red giant with solar-like oscillations in an eclipsing binary observed with the NASA Kepler satellite. We compute stellar parameters of the red giant from spectra and the asteroseismic mass and radius from the oscillations. Although only one eclipse has been observed so far, we can already determine that the secondary is a main-sequence F star in an eccentric orbit with a semi-major axis larger than 0.5 AU and orbital period longer than 75 days.
Hekker, S. [School of Physics and Astronomy, University of Birmingham, Edgbaston B15 2TT (United Kingdom); Debosscher, J.; De Ridder, J.; Aerts, C.; Van Winckel, H.; Beck, P. G.; Blomme, J. [Instituut voor Sterrenkunde, Katholieke Universiteit Leuven, Celestijnenlaan 200D, B-3001 Leuven (Belgium); Huber, D.; Hidas, M. G.; Stello, D.; Bedding, T. R. [Sydney Institute for Astronomy (SIfA), School of Physics, University of Sydney, NSW 2006 (Australia); Gilliland, R. L. [Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, MD 21218 (United States); Christensen-Dalsgaard, J.; Kjeldsen, H. [Department of Physics and Astronomy, Aarhus University, DK-8000 Aarhus C (Denmark); Brown, T. M. [Las Cumbres Observatory Global Telescope, Goleta, CA 93117 (United States); Borucki, W. J.; Koch, D. [NASA Ames Research Center, MS 244-30, Moffet Field, CA 94035 (United States); Jenkins, J. M. [SETI Institute/NASA Ames Research Center, MS 244-30, Moffet Field, CA 94035 (United States); Southworth, J. [Astrophysics Group, Keele University Newcastle-under-Lyme, ST5 5BG (United Kingdom); Pigulski, A. [Instytut Astronomiczny Uniwersytetu Wroclawskiego, Kopernika 11, 51-622 Wroclaw (Poland)], E-mail: firstname.lastname@example.com (and others)
Search for microscopic black holes in a like-sign dimuon final state using large track multiplicity with the ATLAS detector
A search is presented for microscopic black holes in a like-sign dimuon final state in proton--proton collisions at sqrt(s)= 8 TeV. The data were collected with the ATLAS detector at the Large Hadron Collider in 2012 and correspond to an integrated luminosity of 20.3 fb-1. Using a high track multiplicity requirement, 0.6 +- 0.2 background events from Standard Model processes are predicted and none observed. This result is interpreted in the context of low-scale gravity models and 95% CL lower limits on microscopic black hole masses are set for different model assumptions.
ATLAS Collaboration
Lineshape of $e^+ e^-\\to D^* \\bar D+c.c.$ and electromagnetic form factor of $D^*\\to D$ transition in the time-like region
In this work, we apply the vector meson dominance (VMD) model to extract the electromagnetic time-like form factor of the $D^*\\to D$ transition combining the recent Belle data for $e^+ e^-\\to D^{*+} D^- + c.c.$ and data for $D^*\\to D\\gamma$. Two solutions are obtained in the interpretation of the cross section lineshape: i) With a relatively large coupling for $\\psi D^*\\bar{D}$ determined by experiment, destructive interferences among those charmonium components are required to bring down the overall cross sections, and then account for the cross section lineshape. ii) With a relatively small value for the $\\psi D^*\\bar{D}$ coupling based on heavy quark theory, an apparent cross section deficit near threshold is observed, and contributions from other mechanisms are needed. It might imply the presence of an additional resonance X(3900). Meanwhile, we also point out that an enhancement like that could be produced by the $D_s^*\\bar{D_s}+c.c.$ open channel effects.
Yuan-Jiang Zhang; Qiang Zhao
Program. The authors would like to acknowledge financial support from U.S. EPA and U.S. DOE for the
12/7/98 12:58 PM The American electric power industry is undergoing dramatic changes in the way it is structured and regulated. As of June of 1998, state utility regulators, state legislatures or both in 17 states had made the decision to implement retail competition within 5 years or less. Competition in electricity markets and associated new opportunities for expanded inter-regional electricity trading could result in substantial changes in the mix of generation technologies employed to produce electricity, in the efficiency of power plant operations, and in the price and quantity of electricity traded in the marketplace. All of these changes could in turn have potential implications for NOx emissions, with associated potential impacts on air quality in Maryland and nitrate deposition in the Chesapeake Bay. This report focuses on how restructuring and concurrent potential environmental policies could affect emissions. The report draws on a national electricity model to characterize the changes that are likely to take place under alternative scenarios for regulatory and environmental policy. Absent new NOx regulation, electricity restructuring is likely to result in up a 4% increase in annual NOx emissions nationally from the electricity sector by the year 2003, the timeframe considered in this study. The bulk of this increase would occur in the five eastern
Dallas Burtraw; Karen Palmer; Anthony Paul
Henon-like Maps Renormalisation
) FUEL Federal Excise Tax* State Excise Tax* State/Local Sales (Average Percent) M85 0.1140 0.09 7.9 CNG85 CNG Electric 40 11 6 0.6** 45 159 - 174 235 594*** 51 262 - 294 452 1,709*** Total AFVs 57.6 1,000 compressed natural gas (CNG) vehicles and 600 electric vehicles (EVs) were in use in the state. Collectively
Groningen, Rijksuniversiteit
Likely stories and other sides
the mutable landscape. Burning Man Decompression is comingmigrated down here from Burning Man set up camp on the other
Jennings, Glenna
F A C I L I T I E S M A N A G E M E N T A N D O P E R A T I O N S C E N T E R Sandia National Laboratories is a multi-program laboratory managed and operated by Sandia Corporation, a wholly owned subsidiary of
, guidelines and specifications. B. The following codes, as required by law: 1. ANSI/NFPA-70, National Electric.2 COPPER A. Wall-mounted 110-blocks (for voice applications) 1. Performance shall meet the performance 5e 110 Block Kits b) Panduit Pan-Punch 110 category 5e System Kits B. Angled patch panels 1. Size
feet per day in 2011, as production has shifted from conventional sandstone basins to shale and tight water, plus sand (either natural or synthetic) and a variety of different chemicals. The exact chemical to produce natural gas from shale and tight rock formations, including whether there is a potential
15401 Plumbing June 9, 2011 Revision 0 SAND 2011-3946P This document has been reviewed by a Derivative they are free of dirt and grit, and are well lubricated. 3 Run-up all nuts finger tight. 4 Develop the required. The joints must be made perfectly tight by the use of Teflon tape or approved Teflon thread sealing
Like 2 likes. Sign Up to see what your friends like. March 21, 2011
of the Super Bowl who deserves to be celebrated, but the winner of the science fair." Two Johns Hopkins events--a major math education symposium and a ceremony honoring the brightest middle school students,000 people who were first identified as academically talented in their middle school years in five groups
Bardsley, John
Spectral linewidth of a Ne-like Ar capillary discharge soft x-ray laser and its dependence on amplification beyond gain-saturation
We report the measurement of the linewidth and temporal coherence of a = 46.9 nm neon-like argon capillary discharge soft x-ray laser and its variation with plasma column length. A wavefront division interferometer was used to resolve the 3p 1S0-3s 1P1 laser line, resulting in a measured relative linewidths of / = 3-4 10 -5. The measurements do not observe saturation re-broadening as this clearly dominantly Doppler-broadened inhomogeneous line is amplified beyond the intensity corresponding to gain saturation. Model simulations indicate that this is the result of comparatively small collisional broadening that homogenizes the line profile to practically eliminate inhomogeneous saturation re-broadening. Collisional re-distribution is computed to only play a minor role in homogenizing the line profile.
Urbanski, Lukasz [Colorado State University, Fort Collins; Marconi, Mario [Colorado State University, Fort Collins; Meng, L. M. [Colorado State University, Fort Collins; Berrill, Mark A [ORNL; Guilbaud, O. [Universite Paris Sud, Orsay, France; Klisnick, Annie [Universite Paris Sud, Orsay, France; Rocca, Jorge [Colorado State University, Fort Collins
Search for Higgs boson production in trilepton and like-charge electron-muon final states with the D0 detector
We present a search for Higgs bosons in multilepton final states in pp-bar collisions at sqrt(s)=1.96 TeV recorded with the D0 detector at the Fermilab Tevatron Collider, using the full Run II data set with integrated luminosities of up to 9.7 fb-1. The multilepton states considered are two electron plus muon, electron with two muons, muon with two hadronic tau leptons, and like-charge electron-muon pairs. These channels directly probe the HVV (V=W,Z) coupling of the Higgs boson in production and decay. The muon with two hadronic tau lepton channel is also sensitive to H to tau lepton pair decays. Upper limits at the 95% C.L on the rate of standard model Higgs boson production are derived in the mass range 100 Higgs boson model.
D0 Collaboration
Search for the Higgs Boson Using High-pT Isolated Like-Sign Dil Events in 1.96-TeV Proton-Antiproton Collisions
Our physics objective is to search for the neutral on using events containing a like-sign dilepton pair in the following reaction: q{bar q} {yields} W{sup {+-}} H {yields} W{sup {+-}} W*W* {yields} {ell}{sup {+-}}{ell}{sup {+-}} + X. The relevant Higgs boson mass region is above 160 GeV/c{sup 2} for the Standard Model Higgs boson where the branching fraction of H {yields} W*W* supersedes that of H {yields} b{bar b}. The search for this signature in the region at low mass (less than 135 GeV/c{sup 2}) is, however, still important because we need to investigate various Higgs boson couplings as an essential test to convince that signals are attributed to the Higgs boson production. This channel also covers the case beyond the Standard Model that the Higgs boson couples only to the gauge bosons, which is referred to as the bosophilic or fermiophobic Higgs boson. The corresponding mass region suitable to our signature is above 110 GeV/c{sup 2} where the branching fraction of H {yields} {gamma}{gamma} is overtaken by this channel. On the experimental side, the like-sign dilepton event is one of the cleanest signature in hadron collisions. This analysis exploiting such a distinctive signature is therefore expected to have a high potential of the sensitivity for the search of the Higgs boson. The data were collected with the CDF II detector between March 2002 and September 2003, corresponding to an integrated luminosity of 193.5 pb{sup -1}. At off-line, the central region (|{eta}| < 1.1) is considered for the lepton detection. We require at least one electron with E{sub T} > 20 GeV or muon with p{sub T} > 20 GeV/c which is considered to be responsible for firing the corresponding trigger, and at least one other electron with E{sub T} > 6 GeV or muon with p{sub T} > 6 GeV/c. The leptons are required to be isolated in terms of the calorimeter cone-isolation with a cone size of R = 0.4. We require that the isolation is less than 2 GeV for each lepton. For the events with like-sign two or more leptons that pass our selection above, we apply a cosmic-ray veto, dilepton mass cut (M{sub {ell}{ell}} > 12 GeV/c{sup 2}), and a Z-decay removal to clean up the sample. We also explicitly require that the leptons must be consistent with coming from the same vertex, which is an important requirement for multi-lepton signatures especially in a high-luminosity situation. The selection cuts identifies high-p{sub T}, isolated leptons with almost ''standard'' identification criteria. We observed 45 like-sign dilepton events in data.
Kobayashi, Hirokazu; /Tsukuba U.
Search for anomalous production of prompt like-sign lepton pairs at $\\sqrt{s}$ = 7 TeV with the ATLAS detector
An inclusive search for anomalous production of two prompt, isolated leptons with the same electric charge is presented. The search is performed in a data sample corresponding to 4.7 fb-1 of integrated luminosity collected in 2011 at $\\sqrt{s}$ = 7 TeV with the ATLAS detector at the LHC. Pairs of leptons (ee, emu, and mumu) with large transverse momentum are selected, and the dilepton invariant mass distribution is examined for any deviation from the Standard Model expectation. No excess is found, and upper limits on the production cross section of like-sign lepton pairs from physics processes beyond the Standard Model are placed as a function of the dilepton invariant mass within a fiducial region close to the experimental selection criteria. The 95% confidence level upper limits on the cross section of anomalous ee, emu, or mumu production range between 1.7 fb and 64 fb depending on the dilepton mass and flavour combination.
Aad, Georges; Abbott, Brad; Abdallah, Jalal; Abdel Khalek, Samah; Abdelalim, Ahmed Ali; Abdinov, Ovsat; Aben, Rosemarie; Abi, Babak; Abolins, Maris; AbouZeid, Ossama; Abramowicz, Halina; Abreu, Henso; Acerbi, Emilio; Acharya, Bobby Samir; Adamczyk, Leszek; Adams, David; Addy, Tetteh; Adelman, Jahred; Adomeit, Stefanie; Adragna, Paolo; Adye, Tim; Aefsky, Scott; Aguilar-Saavedra, Juan Antonio; Agustoni, Marco; Aharrouche, Mohamed; Ahlen, Steven; Ahles, Florian; Ahmad, Ashfaq; Ahsan, Mahsana; Aielli, Giulio; Akdogan, Taylan; �kesson, Torsten Paul Ake; Akimoto, Ginga; Akimov, Andrei; Alam, Mohammad; Alam, Muhammad Aftab; Albert, Justin; Albrand, Solveig; Aleksa, Martin; Aleksandrov, Igor; Alessandria, Franco; Alexa, Calin; Alexander, Gideon; Alexandre, Gauthier; Alexopoulos, Theodoros; Alhroob, Muhammad; Aliev, Malik; Alimonti, Gianluca; Alison, John; Allbrooke, Benedict; Allport, Phillip; Allwood-Spiers, Sarah; Almond, John; Aloisio, Alberto; Alon, Raz; Alonso, Alejandro; Alonso, Francisco; Alvarez Gonzalez, Barbara; Alviggi, Mariagrazia; Amako, Katsuya; Amelung, Christoph; Ammosov, Vladimir; Amor Dos Santos, Susana Patricia; Amorim, Antonio; Amram, Nir; Anastopoulos, Christos; Ancu, Lucian Stefan; Andari, Nansi; Andeen, Timothy; Anders, Christoph Falk; Anders, Gabriel; Anderson, Kelby; Andreazza, Attilio; Andrei, George Victor; Andrieux, Marie-Laure; Anduaga, Xabier; Anger, Philipp; Angerami, Aaron; Anghinolfi, Francis; Anisenkov, Alexey; Anjos, Nuno; Annovi, Alberto; Antonaki, Ariadni; Antonelli, Mario; Antonov, Alexey; Antos, Jaroslav; Anulli, Fabio; Aoki, Masato; Aoun, Sahar; Aperio Bella, Ludovica; Apolle, Rudi; Arabidze, Giorgi; Aracena, Ignacio; Arai, Yasuo; Arce, Ayana; Arfaoui, Samir; Arguin, Jean-Francois; Arik, Engin; Arik, Metin; Armbruster, Aaron James; Arnaez, Olivier; Arnal, Vanessa; Arnault, Christian; Artamonov, Andrei; Artoni, Giacomo; Arutinov, David; Asai, Shoji; Asfandiyarov, Ruslan; Ask, Stefan; �sman, Barbro; Asquith, Lily; Assamagan, Ketevi; Astbury, Alan; Atkinson, Markus; Aubert, Bernard; Auge, Etienne; Augsten, Kamil; Aurousseau, Mathieu; Avolio, Giuseppe; Avramidou, Rachel Maria; Axen, David; Azuelos, Georges; Azuma, Yuya; Baak, Max; Baccaglioni, Giuseppe; Bacci, Cesare; Bach, Andre; Bachacou, Henri; Bachas, Konstantinos; Backes, Moritz; Backhaus, Malte; Badescu, Elisabeta; Bagnaia, Paolo; Bahinipati, Seema; Bai, Yu; Bailey, David; Bain, Travis; Baines, John; Baker, Oliver Keith; Baker, Mark; Baker, Sarah; Banas, Elzbieta; Banerjee, Piyali; Banerjee, Swagato; Banfi, Danilo; Bangert, Andrea Michelle; Bansal, Vikas; Bansil, Hardeep Singh; Barak, Liron; Baranov, Sergei; Barbaro Galtieri, Angela; Barber, Tom; Barberio, Elisabetta Luigia; Barberis, Dario; Barbero, Marlon; Bardin, Dmitri; Barillari, Teresa; Barisonzi, Marcello; Barklow, Timothy; Barlow, Nick; Barnett, Bruce; Barnett, Michael; Baroncelli, Antonio; Barone, Gaetano; Barr, Alan; Barreiro, Fernando; Barreiro Guimar�es da Costa, Jo�o; Barrillon, Pierre; Bartoldus, Rainer; Barton, Adam Edward; Bartsch, Valeria; Basye, Austin; Bates, Richard; Batkova, Lucia; Batley, Richard; Battaglia, Andreas; Battistin, Michele; Bauer, Florian; Bawa, Harinder Singh; Beale, Steven; Beau, Tristan; Beauchemin, Pierre-Hugues; Beccherle, Roberto; Bechtle, Philip; Beck, Hans Peter; Becker, Anne Kathrin; Becker, Sebastian; Beckingham, Matthew; Becks, Karl-Heinz; Beddall, Andrew; Beddall, Ayda; Bedikian, Sourpouhi; Bednyakov, Vadim; Bee, Christopher; Beemster, Lars; Begel, Michael; Behar Harpaz, Silvia; Behera, Prafulla; Beimforde, Michael; Belanger-Champagne, Camille; Bell, Paul; Bell, William; Bella, Gideon; Bellagamba, Lorenzo; Bellina, Francesco; Bellomo, Massimiliano; Belloni, Alberto; Beloborodova, Olga; Belotskiy, Konstantin; Beltramello, Olga; Benary, Odette; Benchekroun, Driss; Bendtz, Katarina; Benekos, Nektarios; Benhammou, Yan; Benhar Noccioli, Eleonora; Benitez Garcia, Jorge-Armando; Benjamin, Douglas; Benoit, Mathieu; Bensinger, James; Benslama, Kamal; Bentvelsen, Stan; Berge, David; Bergeaas Kuutmann, Elin; Berger, Nicolas; Berghaus, Frank; Berglund, Elina; Beringer, J�rg; Bernat, Pauline; Bernhard, Ralf; Bernius, Catrin; Berry, Tracey; Bertella, Claudia; Bertin, Antonio; Bertolucci, Federico; Besana, Maria Ilaria; Besjes, Geert-Jan; Besson, Nathalie; Bethke, Siegfried; Bhimji, Wahid; Bianchi, Riccardo-Maria; Bianco, Michele; Biebel, Otmar; Bieniek, Stephen Paul; Bierwagen, Katharina; Biesiada, Jed; Biglietti, Michela; Bilokon, Halina; Bindi, Marcello; Binet, Sebastien; Bingul, Ahmet; Bini, Cesare; Biscarat, Catherine; Bittner, Bernhard
Nano-hillock formation in diamond-like carbon induced by swift heavy projectiles in the electronic stopping regime: Experiments and atomistic simulations
The formation of surface hillocks in diamond-like carbon is studied experimentally and by means of large-scale molecular dynamics simulations with 5 Multiplication-Sign 10{sup 6} atoms combined with a thermal spike model. The irradiation experiments with swift heavy ions cover a large electronic stopping range between {approx}12 and 72 keV/nm. Both experiments and simulations show that beyond a stopping power threshold, the hillock height increases linearly with the electronic stopping, and agree extremely well assuming an efficiency of approximately 20% in the transfer of electronic energy to the lattice. The simulations also show a transition of sp{sup 3} to sp{sup 2} bonding along the tracks with the hillocks containing almost no sp{sup 3} contribution.
Schwen, D. [Department of Materials Science and Engineering, University of Illinois at Urbana-Champaign, Illinois 61801 (United States); Bringa, E. [CONICET and Instituto de Ciencias Basicas, Universidad Nacional de Cuyo, Mendoza 5500 (Argentina); Krauser, J. [Hochschule Harz, Friedrichstrasse 57-59, 38855 Werningerode (Germany); Weidinger, A. [Helmholtz-Zentrum Berlin fuer Materialien und Energie, 14109 Berlin (Germany); Trautmann, C. [GSI Helmholtzzentrum, Planckstr. 1, 64291, Darmstadt (Germany); Hofsaess, H. [II. Physikalisches Institut, Universitaet Goettingen, Friedrich-Hund-Platz 1, 37077 Goettingen (Germany)
A Facile synthesis of flower-like Co{sub 3}O{sub 4} porous spheres for the lithium-ion battery electrode
The porous hierarchical spherical Co{sub 3}O{sub 4} assembled by nanosheets have been successfully fabricated. The porosity and the particle size of the product can be controlled by simply altering calcination temperature. SEM, TEM and SAED were performed to confirm that mesoporous Co{sub 3}O{sub 4} nanostructures are built-up by numerous nanoparticles with random attachment. The BET specific surface area and pore size of the product calcined at 280 deg. C are 72.5 m{sup 2} g{sup -1} and 4.6 nm, respectively. Our experiments further demonstrated that electrochemical performances of the synthesized products working as an anode material of lithium-ion battery are strongly dependent on the porosity. - Graphical abstract: The flower-like Co{sub 3}O{sub 4} porous spheres with hierarchical structure have been successfully prepared via a simple calcination process using cobalt hydroxide as precursor.
Zheng Jun; Liu Jing; Lv Dongping; Kuang Qin [State Key Laboratory for Physical Chemistry of Solid Surfaces and Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005 (China); Jiang Zhiyuan, E-mail: firstname.lastname@example.com [State Key Laboratory for Physical Chemistry of Solid Surfaces and Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005 (China); Xie Zhaoxiong; Huang Rongbin; Zheng Lansun [State Key Laboratory for Physical Chemistry of Solid Surfaces and Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005 (China)
Long-range interactions between a He(2 {sup 3}S) atom and a He(2 {sup 3}P) atom for like isotopes
For the interactions between a He(2 {sup 3}S) atom and a He(2 {sup 3}P) atom for like isotopes, we report perturbation theoretic calculations using accurate variational wave functions in Hylleraas coordinates of the coefficients determining the potential energies at large internuclear separations. We evaluate the coefficient C{sub 3} of the first order resonant dipole-dipole energy and the van der Waals coefficients C{sub 6}, C{sub 8}, and C{sub 10} for the second order energies arising from the mutual perturbations of instantaneous electric dipole, quadrupole, and octupole interactions. We also evaluate the leading contribution to the third-order energy. We establish definitive values including treatment of the finite nuclear mass for the {sup 3}He(2 {sup 3}S)-{sup 3}He(2 {sup 3}P) and {sup 4}He(2 {sup 3}S)-{sup 4}He(2 {sup 3}P) interactions.
Zhang, J.-Y.; Yan, Z.-C. [Department of Physics, University of New Brunswick, Fredericton, New Brunswick, E3B 5A3 (Canada); Vrinceanu, D. [T-4 Group, Los Alamos National Laboratory, Los Alamos, New Mexico 87545 (United States); Babb, J. F.; Sadeghpour, H. R. [ITAMP, Harvard-Smithsonian Center for Astrophysics, Cambridge, Massachusetts 02138 (United States)
SN 2006gy: Discovery of the most luminous supernova ever recorded, powered by the death of an extremely massive star like Eta Carinae
(abridged) We report our discovery and observations of the peculiar Type IIn supernova SN2006gy in NGC1260, revealing that it reached a peak magnitude of -22, making it the most luminous supernova ever recorded. It is not yet clear what powers the total radiated energy of 1e51 erg, but we argue that any mechanism -- thermal emission, circumstellar interaction, or 56Ni decay -- requires a very massive progenitor star. The circumstellar interaction hypothesis would require truly exceptional conditions around the star probably experienced an LBV eruption like the 19th century eruption of eta Carinae. Alternatively, radioactive decay of 56Ni may be a less objectionable hypothesis. That power source would imply a large Ni mass of 22 Msun, requiring that SN2006gy was a pair-instability supernova where the star's core was obliterated. SN2006gy is the first supernova for which we have good reason to suspect a pair-instability explosion. Based on a number of lines of evidence, we rule out the hypothesis that SN 2006gy was a ``Type IIa'' event. Instead, we propose that the progenitor may have been a very massive evolved object like eta Carinae that, contrary to expectations, failed to completely shed its massive hydrogen envelope before it died. Our interpretation of SN2006gy implies that the most massive stars can explode earlier than expected, during the LBV phase, preventing them from ever becoming Wolf-Rayet stars. SN2006gy also suggests that the most massive stars can create brilliant supernovae instead of dying ignominious deaths through direct collapse to a black hole.
Nathan Smith; Weidong Li; Ryan J. Foley; J. Craig Wheeler; Dave Pooley; Ryan Chornock; Alexei V. Filippenko; Jeffrey M. Silverman; Robert Quimby; Joshua S. Bloom; Charles Hansen
Assess the key physics that underpins high-hydro coupling-efficiency in NDCX-II experiments and high-gain heavy ion direct drive target designs using proven hydro codes like HYDRA
physics that underpins high-hydro coupling-efficiency in N Dtarget designs using proven hydro codes like H Y D R A . byF E targets, we have studied hydro and implosion efficiency
Barnard, J. J.
Sandia National Laboratories: Working with Sandia: Potential ...
... is a multi-program laboratory managed and operated by Sandia Corporation, a wholly owned subsidiary of Lockheed Martin Corporation, ...
Sandia National Laboratories: Working with Sandia: Small Business
Sandia National Laboratories: Working with Sandia: Contract Audit
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Sandia National Laboratories: News: Economic Impact
Handbook of Best Practices for Geothermal Drilling
Sandia National Laboratories is a multi-program laboratory managed and operated by Sandia Corporation, a wholly owned
John Finger; Doug Blankenship
Expanding the Trilinos Developer Community
Michael A. Heroux; Michael A. Heroux
On D{yields}X{sub u}l{sup +}l{sup -} within the Standard Model and frameworks like the littlest Higgs model with T Parity
The D{yields}X{sub u}l{sup +}l{sup -} transitions -- branching ratios, forward-backward (FB) asymmetry A{sub FB}{sup c}, the CP asymmetry A{sub CP}{sup c}, and the CP asymmetry in the forward-backward asymmetry A{sub FB}{sup CP} -- have two sources: for D{sup {+-}}they represent a pure {Delta}C=1 and {Delta}Q=0 current interaction whereas neutral D mesons can also communicate via their antihadron. Standard model (SM) contributions to BR(D{yields}X{sub u}l{sup +}l{sup -}) come primarily from long distance dynamics, which overshadow short distance contributions by several orders of magnitude; still they fall much below the present upper experimental bounds. Even the SM contributions to A{sub FB}{sup c}, A{sub CP}{sup c}, and A{sub FB}{sup CP} are tiny, quite unlike in beauty hadrons. The branching ratios are hardly dented by contributions from the littlest Higgs models with T parity (LHT) even in the short distance regime, let alone in the SM long distances dynamics. Yet the asymmetries A{sub FB}{sup c}, A{sub CP}{sup c}, and A{sub FB}{sup CP} in these new physics models can be enhanced over SM predictions, as they arise purely from short distance dynamics; this can occur, in particular, for A{sub FB}{sup c} and A{sub FB}{sup CP}, which get enhanced by orders of magnitudes. Even such enhancements hardly reach absolute sizes for observable experimental effects for A{sub FB}{sup c} and A{sub CP}{sup c}. However, LHT contributions to A{sub FB}{sup CP} could be measured in experiments like the LHCb and the SuperB Collaboration. These results lead us to draw further conclusions on flavor-changing neutral-current interactions within LHT-like models through some simple scaling arguments that encapsulate the essence of flavor dynamics in and beyond the standard model.
Paul, Ayan; Bigi, Ikaros I.; Recksiegel, Stefan [Department of Physics, University of Notre Dame du Lac, Notre Dame, Indiana 46556 (United States); Physik Department, Technische Universitaet Muenchen, D-85748 Garching (Germany)
Johnson(-like)-Noise-Kirchhoff-Loop Based Secure Classical Communicator Characteristics, for Ranges of Two to Two Thousand Kilometers, via Model-Line
A pair of Kirchhoff-Loop-Johnson(-like)-Noise communicators, which is able to work over variable ranges, was designed and built. Tests have been carried out on a model-line performance characteristics were obtained for ranges beyond the ranges of any known direct quantum communication channel and they indicate unrivalled signal fidelity and security performance of the exchanged raw key bits. This simple device has single-wire secure key generation and sharing rates of 0.1, 1, 10, and 100 bit/second for corresponding copper wire diameters/ranges of 21 mm / 2000 km, 7 mm / 200 km, 2.3 mm / 20 km, and 0.7 mm / 2 km, respectively and it performs with 0.02% raw-bit error rate (99.98 % fidelity). The raw-bit security of this practical system significantly outperforms raw-bit quantum security. Current injection breaking tests show zero bit eavesdropping ability without triggering the alarm signal, therefore no multiple measurements are needed to build an error statistics to detect the eavesdropping as in quantum communication. Wire resistance based breaking tests of Bergou-Scheuer-Yariv type give an upper limit of eavesdropped raw bit ratio of 0.19 % and this limit is inversely proportional to the sixth power of cable diameter. Hao's breaking method yields zero (below measurement resolution) eavesdropping information.
Robert Mingesz; Zoltan Gingl; Laszlo B. Kish
Very Low Mass Stellar and Substellar Companions to Solar-like Stars From MARVELS IV: A Candidate Brown Dwarf or Low-Mass Stellar Companion to HIP 67526
We report the discovery of a candidate brown dwarf or a very low mass stellar companion (MARVELS-5b) to the star HIP 67526 from the Multi-object APO Radial Velocity Exoplanet Large-area Survey (MARVELS). The radial velocity curve for this object contains 31 epochs spread over 2.5 years. Our Keplerian fit using a Markov Chain Monte Carlo approach, reveals that the companion has an orbital period of $90.2695^{+0.0188}_{-0.0187}$ days, an eccentricity of $0.4375 \\pm 0.0040$ and a semi-amplitude of $2948.14^{+16.65}_{-16.55}$ m s$^{-1}$. Using additional high-resolution spectroscopy, we find the host star has an effective temperature $T_{\\rm{eff}}=6004 \\pm 34$ K, a surface gravity $\\log g$ [cgs] $=4.55 \\pm 0.17$ and a metallicity [Fe/H] $=+0.04 \\pm 0.06$. The stellar mass and radius determined through the empirical relationship of Torres et al. (2010), yields 1.10$\\pm$0.09 $M_{\\sun}$ and 0.92$\\pm$0.19 $R_{\\sun}$. The minimum mass of MARVELS-5b is $65.0 \\pm 2.9 M_{Jup}$, indicating that it is likely to be either a...
Jiang, Peng; Cargile, Phillip; Crepp, Justin R; De Lee, Nathan; de Mello, Gustavo F Porto; Esposito, Massimiliano; Ferreira, Let�cia D; Femenia, Bruno; Fleming, Scott W; Gaudi, B Scott; Ghezzi, Luan; Hern�ndez, Jonay I Gonz�lez; Hebb, Leslie; Lee, Brian L; Ma, Bo; Stassun, Keivan G; Wang, Ji; Wisniewski, John P; Agol, Eric; Bizyaev, Dmitry; Brewington, Howard; Chang, Liang; da Costa, Luiz Nicolaci; Eastman, Jason D; Ebelke, Garrett; Gary, Bruce; Kane, Stephen R; Li, Rui; Liu, Jian; Mahadevan, Suvrath; Maia, Marcio A G; Malanushenko, Viktor; Malanushenko, Elena; Muna, Demitri; Nguyen, Duy Cuong; Ogando, Ricardo L C; Oravetz, Audrey; Oravetz, Daniel; Pan, Kaike; Pepper, Joshua; Paegert, Martin; Prieto, Carlos Allende; Rebolo, Rafael; Santiago, Basilio X; Schneider, Donald P; Bradley, Alaina C Shelden; Sivarani, Thirupathi; Snedden, Stephanie; van Eyken, J C; Wan, Xiaoke; Weaver, Benjamin A; Zhao, Bo
Identification of cis-acting sequences responsible for phorbol ester induction of human serum amyloid A gene expression via a nuclear factor kB-like transcription factor
The authors have analyzed the 5'-flanking region of one of the genes coding for the human acute-phase protein, serum amyloid A (SAA). They found that SAA mRNA could be increased fivefold in transfected cells by treatment with phorbol 12-myristate 13-acetate (PMA). To analyze this observation further, they placed a 265-base-pair 5' SAA fragment upstream of the reporter chloramphenicol acetyltransferase (CAT) gene and transfected this construct into HeLa cells. PMA treatment of these transient transfectants resulted in increased CAT expression. Nuclear proteins from PMA-treated HeLa cells bound to this DNA fragment, and methylation interference analysis showed that the binding was specific to the sequence GGGACTTTCC (between -82 and -91), a sequence previously described by others as the binding site for the nuclear factor NF/kappa/B. In a cotransfection competition experiment, they could abolish PMA-induced CAT activity by using cloned human immunodeficiency virus long-terminal-repeat DNA containing the NF/kappa/B-binding sequence. The same long-terminal-repeat DNA containing mutant NF/kappa/B-binding sequences did not affect CAT expression, which suggested that binding by an NF/kappa/B-like factor is required for increased SAA transcription.
Edbrooke, M.R.; Cheshire, J.K.; Woo, P.; Burt, B.W.
Genetic evidence that Ras-like GTPases, Gtr1p, and Gtr2p, are involved in epigenetic control of gene expression in Saccharomyces cerevisiae
Gtr1p and Gtr2p of Saccharomyces cerevisiae are members of the Ras-like GTP binding family and interact genetically with Prp20p (yeast RCC1), which is a guanine nucleotide exchange factor for Gsp1p (yeast homolog of Ran, involved in nuclear export). Recently, Gtr1p and Gtr2p were suggested to be molecular switches in the rapamycin-sensitive TOR signaling pathway. Here, we show that Gtr1p and Gtr2p genetically interact with the chromatin remodeling factor Ino80p. Gtr2p interacted physically with both Rvb1p and Rvb2p. Consistent with these results, Gtr2p localized to chromatin and could activate transcription. Gtr1p and Gtr2p were found to be involved in chromatin silencing in the vicinity of telomeres. Gtr1p and Gtr2p were required to repress nitrogen catabolite-repressed genes, which are repressed by the TOR signaling pathway. We propose that Gtr1p and Gtr2p are involved in epigenetic control of gene expression in the TOR signaling pathway.
Sekiguchi, Takeshi [Department of Molecular Biology, Graduate School of Medical Science, Kyushu University, Maidashi 3-1-1, Higashi-ku, Fukuoka 812-8582 (Japan); Core Research for Evolutional Science and Technology (CREST), Japan Science and Technology Agency, Nihonbashi, Tokyo 103-0027 (Japan)], E-mail: firstname.lastname@example.com; Hayashi, Naoyuki [Department of Molecular Pathology, Cancer Research Institute, Kanazawa University, 13-1 Takara-machi, Kanazawa, Ishikawa 920-0934 (Japan); Wang, Yonggang [Department of Molecular Biology, Graduate School of Medical Science, Kyushu University, Maidashi 3-1-1, Higashi-ku, Fukuoka 812-8582 (Japan); Kobayashi, Hideki [Department of Molecular Biology, Graduate School of Medical Science, Kyushu University, Maidashi 3-1-1, Higashi-ku, Fukuoka 812-8582 (Japan); Core Research for Evolutional Science and Technology (CREST), Japan Science and Technology Agency, Nihonbashi, Tokyo 103-0027 (Japan)
Experimental results from containment piping bellows subjected to severe accident conditions. Volume 1, Results from bellows tested in `like-new` conditions
Bellows are an integral part of the containment pressure boundary in nuclear power plants. They are used at piping penetrations to allow relative movement between piping and the containment wall, while minimizing the load imposed on the piping and wall. Piping bellows are primarily used in steel containments; however, they have received limited use in some concrete (reinforced and prestressed) containments. In a severe accident they may be subjected to pressure and temperature conditions that exceed the design values, along with a combination of axial and lateral deflections. A test program to determine the leak-tight capacity of containment penetration bellows is being conducted under the sponsorship of the US Nuclear Regulatory Commission at Sandia National Laboratories. Several different bellows geometries, representative of actual containment bellows, have been subjected to extreme deflections along with pressure and temperature loads. The bellows geometries and loading conditions are described along with the testing apparatus and procedures. A total of thirteen bellows have been tested, all in the `like-new` condition. (Additional tests are planned of bellows that have been subjected to corrosion.) The tests showed that bellows are capable of withstanding relatively large deformations, up to, or near, the point of full compression or elongation, before developing leakage. The test data is presented and discussed.
Lambert, L.D.; Parks, M.B. [Sandia National Labs., Albuquerque, NM (United States)
The planet search programme at the ESO CES and HARPS. IV. The search for Jupiter analogues around solar-like stars
In 1992 we began a precision radial velocity (RV) survey for planets around solar-like stars with the Coude Echelle Spectrograph and the Long Camera (CES LC) at the 1.4 m telescope in La Silla (Chile). We have continued the survey with the upgraded CES Very Long Camera (VLC) and HARPS, both at the 3.6 m telescope, until 2007. The observations for 31 stars cover a time span of up to 15 years and the RV precision permit a search for Jupiter analogues. We perform a joint analysis for variability, trends, periodicities, and Keplerian orbits and compute detection limits. Moreover, the HARPS RVs are analysed for correlations with activity indicators (CaII H&K and CCF shape). We achieve a long-term RV precision of 15 m/s (CES+LC, 1992-1998), 9 m/s (CES+VLC, 1999-2006), and 2.8 m/s (HARPS, 2003-2009, including archive data), resp. This enables us to confirm the known planets around Iota Hor, HR 506, and HR 3259. A steady RV trend for Eps Ind A can be explained by a planetary companion. On the other hand, we find ...
Zechmeister, M; Endl, M; Curto, G Lo; Hartman, H; Nilsson, H; Henning, T; Hatzes, A P; Cochran, W D
Mapping of the choroideremia-like (CHML) gene at 1q42-qter and mutation analysis in patients with Usher syndrome type II
The human choroideremia-like (CHML) gene and a locus for Usher syndrome type 2 (USH2) were recently mapped to the 1q31-qter region employing physical mapping and genetic linkage studies, respectively. Using a human-rodent hybrid cell line, the authors could refine the assignment of CHML in this study to 1q42-qter. USH2 was shown to map to the same chromosomal segment as evidence by the fact that D1S58, a polymorphic marker previously shown to be located proximal to the USH2 locus, was also assigned in the 1q42-qter segment. To investigate a possible role of the CHML gene in the pathogenesis of USH2, they investigated 10 Dutch and 9 Danish USH2 patients for point mutations in the open reading frame of the CHML gene. Employing polymerase chain reaction-single-strand conformation polymorphism analysis and direct sequencing, they found no disease-specific mutations. These results suggest that CHML is not involved in the pathogenesis of USH2. 22 refs., 2 figs., 1 tab.
Bokhoven, H.V.; Genderen, C.V.; Molloy, C.M.; Pol, D.J.R.V.D.; Cremers, C.W.R.J.; Aarem, A.V.; Kessel, H.M.G.
Leptin gene expression and circulating leptin in relation to luteinizing hormone, growth hormone, insulin, and insulin-like growth factor-I in prepubertal heifers
The present study tested the hypothesis that short-term fasting would reduce leptin gene expression, circulating leptin, and luteinizing hormone (LH) pulsatility in prepubertal heifers in association with a decrease in circulating concentrations of insulin and insulin-like growth factor-I (IGF-I). Twelve prepubertal crossbred heifers (average body weight = 315 [] 5 kg) were assigned randomly to one of two treatments in two replicates: 1) Control; normal feed consumption (n=6) and 2) Fasted; 48 h of total feed restriction (n=6). Blood samples were collected at 15-min intervals for 8 h on Days 0 and 2 of the experiment, and twice on Day 1. Subcutaneous fat samples were collected before treatment onset (Day -1) and at the end of the intensive blood sampling on Day 2. Acute feed restriction markedly reduced leptin messenger ribonucleic acid (mRNA) in adipose tissue (p < 0.01) and circulating concentrations of leptin (p < 0.05), IGF-I (p < 0.01), and insulin (p = 0.05) compared to Controls on Day 2. Moreover, the treatment x day interaction (p < 0.076) and within-day contrasts (expressed as a percentage of Day 0 values) revealed that the mean frequency of LH pulses in the fasted group declined (p < 0.01) and was lower (p < 0.06) than in Controls on Day 2. Neither mean concentrations of growth hormone (GH) nor GH secretory dynamics were affected by acute feed restriction. Fasting-mediated decreases in leptin gene expression and circulating leptin, in association with reductions in secretion of IGF-I, insulin, and LH, provide a basis for investigating leptin as a metabolic hormone that signals energy status to the central reproductive axis in cattle.
Amstalden, Marcel
Mutation in a light-regulated glucan synthase-like gene (gsl12) displays light hyper-responsive and callose deficient phenotypes in arabidopsis
Light is a very important factor affecting every aspect of plant development. Plant developmental responses to light are sensitive to the direction, intensity, color, and duration of light. Light is perceived by an extensive set of photoreceptors that includes the red/far-red light�absorbing phytochromes and blue/UV-A light�absorbing cryptochromes. The Arabidopsis mutant seedling hyper-responsive to light 6 (shl6) has exaggerated developmental responses to available light. In the low light, shl6 seedlings have a phenotype similar to wild-type plants grown in high light, with short hypocotyls, expanded cotyledons, and well-developed first true leaves. In addition, the roots of shl6 are short and highly branched. The SHL6 gene was mapped to a position on chromosome 5 between simple sequence length polymorphism (SSLP) markers nga249 and nga151. Two cosmid clones from this interval (introduced by Agrobacterium-mediated transformation) complemented the shl6 mutant phenotype. One candidate gene identified by complementation is a member of the glycosyltransferase family. The sequence of shl6 mutant differs from wild type Columbia allele of this gene (At5g13000) by a single nucleotide substitution in the first exon. This putative SHL6 gene encodes a member of a glycan synthase-like (GSL12) gene family that includes callose synthase. The ?-1,3-D-glucan callose is found in the cell plate of dividing cells, in pollen mother cell walls, and pollen tubes. Callose synthase and related genes have not been previously implicated in developmental responses to light. We also observed that 90% of Col-0 anthers showed high callose deposition, but shl6 mutant did not display callose deposition in the anthers. The pollen viability in the shl6 was lower than Col-0. The epidermal cell elongation in shl6 hypocotyls was reduced when compared with Col-0. Therefore, we conclude that the mutation in light-regulated SHL6/GSL12 was involved in the synthesis of callose as well as light signaling.
Byun, Bohyun
A Large-scale Relativistic Configuration-interaction Approach: Application to the 4s2 - 4s4p Transition Energies and E1 Rates for Zn-like Ions
Relativistic configuration-interaction calculations of the 4s4p excitation energies and 4s{sup 2} - 4s4p E1 transitions for Zn-like ions from Z = 30 to 92 are shown. B-spline basis functions are used for these large-scale calculations. QED corrections to the excitation energies are also calculated. Results are in good agreement with other theories and with experiment, and demonstrate the utility of this method for high-precision atomic structure calculations not just for few-electron systems but also for large atomic systems such as Zn-like ions along the entire isoelectronic sequence.
Chen, M H; Cheng, K T
Physics 227 Winter, 1998 Problem Set 9 Due date: Monday, March 9 9.1 energy-momentum ratio A beam of moving particles, like an electromagnetic field, contains momentum
Physics 227 Winter, 1998 Problem Set 9 Due date: Monday, March 9 9.1 energy-momentum ratio A beam of moving particles, like an electromagnetic field, contains momentum and transports energy. a) Find the ratio of energy current to momentum density for a beam of particles with mass m and speed v. (The number
Witten, Thomas A.
DOE/EIS-0375D: Draft Environmental Impact Statement for the Disposal of Greater-Than-Class C (GTCC) Low-Level Radioactive Waste and GTCC-Like Waste (DOE/EIS-0375D)(February 2011)
Impact Statement for the Volume 1: Chapters 1 through 8 February 2011 Disposal of Greater-Than-Class C (GTCC) Low-Level Radioactive Waste and GTCC-Like Waste (DOE/EIS-0375-D) T H E U.S. D E P A R T M E N T O F E N E R G Y ENERGY U.S. DEPARTMENT OF On the cover: The photographs on the front cover are, from left to right: glove boxes contaminated with GTCC Other Waste, abandoned Am-241 and Cs-137 gauges and shipping shields, and disused well logging sources being loaded into a 55-gallon drum. Draft GTCC EIS Cover Sheet COVER SHEET Lead Agency: U.S. Department of Energy (DOE) Cooperating Agency: U.S. Environmental Protection Agency (EPA) Title: Draft Environmental Impact Statement for the Disposal of Greater-Than-Class C (GTCC) Low-Level Radioactive Waste and GTCC-Like Waste (DOE/EIS-0375-D)
DOE/EIS-0375D: Draft Environmental Impact Statement for the Disposal of Greater-Than-Class (GTCC) Low-Level Radioactive Waste and GTCC-Like Waste (February 2011)
Disposal of Greater-Than-Class C (GTCC) Low-Level Radioactive Waste and GTCC-Like Waste (DOE/EIS-0375-D) February 2011 SUMMARY ENERGY U.S. DEPARTMENT OF U.S. D E P A R T M E N T O F E N E R G Y On the cover: The photographs on the front cover are, from left to right: glove boxes contaminated with GTCC Other Waste, abandoned Am-241 and Cs-137 gauges and shipping shields, and disused well logging sources being loaded into a 55-gallon drum. COVER SHEET Lead Agency: U.S. Department of Energy (DOE) Cooperating Agency: U.S. Environmental Protection Agency (EPA) Title: Draft Environmental Impact Statement for the Disposal of Greater-Than-Class C (GTCC) Low-Level Radioactive Waste and GTCC-Like Waste (DOE/EIS-0375-D)
ESS 2012 Peer Review - Low Cost, Manufacturable High Voltage Power Module for ESS - Brandon Passmore, APEI
W. Research Center Blvd. * Fayetteville, AR 72701 * (479) 443-5759 W. Research Center Blvd. * Fayetteville, AR 72701 * (479) 443-5759 Design and Development of a Low Cost, Manufacturable High Voltage Power Module for Energy Storage Systems Phase I SBIR September 27, 2012 Brandon Passmore, PhD Sr. Electronics Packaging Research Engineer Email: firstname.lastname@example.com Acknowledgements * I would like to thank Dr. Imre Gyuk of the DOE Energy Storage Systems Program and Dr. Stan Atcitty for technical support * I would also like to thank 2 Sandia National Laboratories is a multi-program laboratory managed and operated by Sandia Corporation, a wholly owned subsidiary of Lockheed Martin Corporation, for the U.S. Department of Energy's National Nuclear Security Administration under contract DE-AC04-94AL85000.
Effect of point-like disorder on the vortex phase diagram in Bi{sub 2}Sr{sub 2}CaCu{sub 2}O{sub 8-{delta}} in oblique field.
The phase diagram of vortex matter in the layered superconductor Bi{sub 2}Sr{sub 2}CaCu{sub 2}O{sub 8-{delta}} exposed to a magnetic field oblique to the crystalline c-axis contains two first order transition (FOT) lines. The first, H{sub FOT}{sup m}, separates the vortex solid from the vortex liquid, the second, H{sub FOT}{sup ct}, separates the combined lattice state in the vortex solid from a tilted lattice state. The angular dependence of H{sub FOT}{sup m} in the tilted lattice region follows the anisotropic Ginzburg-Landau model, allowing for the determination of the anisotropy factor {gamma}{sub eff} and the contribution of magnetic coupling to the mutual interaction of 'pancake' vortices in the crossed lattice limit. The later parameter is directly related to the in-plane penetration depth {lambda}{sub ab}. We investigate the evolution of the phase diagram of Bi{sub 2}Sr{sub 2}CaCu{sub 2}O{sub 8-{delta}} in oblique fields with point-like disorder, introduced by irradiation with 2.3 MeV electrons. Apart from the depression of T{sub c}, point-like disorder induces an increase of {gamma}{sub eff} and a depression of the superfluid density.
Konczykowski, M.; van der Beek, C. J.; Mosser, V.; Koshelev, A. E.; Li, M.; Kes, P. H. (Materials Science Division); (Ecole Polytechnique); (ITRON); (Leiden Univ.)
Preseismic oscillating electric field "strange attractor like" precursor, of T = 6 months, triggered by Ssa tidal wave. Application on large (Ms > 6.0R) EQs in Greece (October 1st, 2006 - December 2nd, 2008)
In this work the preseismic "strange attractor like" precursor is studied, in the domain of the Earth's oscillating electric field for T = 6 months. It is assumed that the specific oscillating electric field is generated by the corresponding lithospheric oscillation, triggered by the Ssa tidal wave of the same wave length (6 months) under excess strain load conditions met in the focal area of a future large earthquake. The analysis of the recorded Earth's oscillating electric field by the two distant monitoring sites of PYR and HIO and for a period of time of 26 months (October 1st, 2006 - December 2nd, 2008) suggests that the specific precursor can successfully resolve the predictive time window in terms of months and for a "swarm" of large EQs (Ms > 6.0R), in contrast to the resolution obtained by the use of electric fields of shorter (T = 1, 14 days, single EQ identification) wave length. More over, the fractal character of the "strange attractor like" precursor in the frequency domain is pointed out. Fina...
Thanassoulas, C; Verveniotis, G; Zymaris, N
What Americans like about being online
A study of AOL users finds they are particularly gratified using the Net as a source of information, communication, and socializing---results that may be helpful to ISPs in their efforts to attract and retain users.
Thomas F. Stafford; Dennis Gonier
A Competition Like No Other Heats Up
& Testimony Recovery Act Contact Information Office of Science U.S. Department of Energy 1000 Independence Ave., SW Washington, DC 20585 P: (202) 586-5430 02.19.13 A...
A Competition Like No Other Rolls On
& Testimony Recovery Act Contact Information Office of Science U.S. Department of Energy 1000 Independence Ave., SW Washington, DC 20585 P: (202) 586-5430 02.11.13 A...
Skin-Like Prosthetic Polymer Surfaces
transmit heat much more easily than untreated polymers. In addition, the material can be adjusted for color and skin smoothness, ... ��Thermal conduct ...
Internal Dynamics of Tornado-Like Vortices
A simple model of flow through a tornado vortex simulator is described. This model assumes a very simple distribution in the vertical of the radial and tangential components of the wind, consistent with the flow found in the simulator. With these ...
Robert L. Gall
Rapid inactivation of SARS-like coronaviruses.
Chemical disinfection and inactivation of viruses is largely understudied, but is very important especially in the case of highly infectious viruses. The purpose of this LDRD was to determine the efficacy of the Sandia National Laboratories developed decontamination formulations against Bovine Coronavirus (BCV) as a surrogate for the coronavirus that causes Severe Acute Respiratory Syndrome (SARS) in humans. The outbreak of SARS in late 2002 resulted from a highly infectious virus that was able to survive and remain infectious for extended periods. For this study, preliminary testing with Escherichia coli MS-2 (MS-2) and Escherichia coli T4 (T4) bacteriophages was conducted to develop virucidal methodology for verifying the inactivation after treatment with the test formulations following AOAC germicidal methodologies. After the determination of various experimental parameters (i.e. exposure, concentration) of the formulations, final testing was conducted on BCV. All experiments were conducted with various organic challenges (horse serum, bovine feces, compost) for results that more accurately represent field use condition. The MS-2 and T4 were slightly more resistant than BCV and required a 2 minute exposure while BCV was completely inactivated after a 1 minute exposure. These results were also consistent for the testing conducted in the presence of the various organic challenges indicating that the test formulations are highly effective for real world application.
Kapil, Sanjay (Kansas State University, Manhattan, KS); Oberst, R. D. (Kansas State University, Manhattan, KS); Bieker, Jill Marie; Tucker, Mark David; Souza, Caroline Ann; Williams, Cecelia Victoria
Tissue-like phantoms - Energy Innovation Portal
... or merely to serve as calibration standards. These objects can be imaged using one, two, or more (e.g., four) different imaging modalities (e.g., ...
Western Colorado, like much of the Intermountain
per square foot: $1.25 Permanent Hoophouse · Total cost of materials: $3,270 · Space covered: 768 square feet · Cost per square foot: $4.26 * The extra cost is for the rail system and added materials cost of materials: $4,789.88 · Space covered: 3,840 square feet (768 square feet x five moves) · Cost
Goodman, Robert M.
Energy and Engineering ... images as the same rate data is received or match a user ... Produced water or wastewater from coal-methane facilities and other industries
Noncommutative geometry of groups like $?_0(N)$
We show that the Connes-Marcolli $GL_{2}$-system can be represented on the Big Picture, a combinatorial gadget introduced by Conway in order to understand various results about congruence subgroups pictorially. In this representation the time evolution of the system is implemented by Conway's distance between projective classes of commensurable lattices. We exploit these results in order to associate quantum statistical mechanical systems to congruence subgroups in a way appropriate for the study of monstrous moonshine.
Jorge Plazas
Likely Ranges of Climate Change in Bolivia
Bolivia is facing numerous climate-related threats, ranging from water scarcity due to rapidly retreating glaciers in the Andes to a partial loss of the Amazon forest in the lowlands. To assess what changes in climate may be expected in the future,...
Christian Seiler; Ronald W. A. Hutjes; Pavel Kabat
Window for radiation detectors and the like
An improved x- and gamma-radiation and particle transparent window for the environment-controlling enclosure of various types of radiation and particle detectors is provided by a special graphite foil of a thickness of from about 0.1 to 1 mil. The graphite must have very parallel hexagonal planes with a mosaic spread no greater than 5$sup 0$ to have the necessary strength in thin sections to support one atmosphere or more of pressure. Such graphite is formed by hot- pressing and annealing pyrolytically deposited graphite and thereafter stripping off layers of sufficient thickness to form the window.
Sparks, C.J. Jr.; Ogle, J.C.
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with a high level of consumption. Waste to Energy (WtE) is an essential component of the U.S. materials of renewable energy portfolios in many states in the U.S. has created a renewable energy mandate the void and meet these legal requirements. Energy consumption and renewable energy mandates The U.S
Columbia University
Hydrogen like classification for light nonstrange mesons
The recent experimental results on the spectrum of highly excited light nonstrange mesons are known to reveal a high degree of degeneracy among different groups of states. We revise some suggestions about the nature of the phenomenon and put the relevant ideas into the final shape. The full group of approximate mass degeneracies is argued to be $SU(2)_f\\times I\\times O(4)$, where $I$ is the degeneracy of isosinglets and isotriplets and O(4) is the degeneracy group of the relativistic hydrogen atom. We discuss the dynamical origin and consequences of considered symmetry with a special emphasis on distinctions of this symmetry from the so-called chiral symmetry restoration scenario.
S. S. Afonin
Asteroseismology from solar-like oscillations
There has been tremendous progress in observing oscillations in solar-type stars. In a few short years we have moved from ambiguous detections to firm measurements. We briefly review the recent results, most of which have come from high-precision Doppler measurements. We also review briefly the results on giant and supergiant stars and the prospects for the future.
Bedding, T R; Bedding, Timothy R.; Kjeldsen, Hans
Timothy R. Bedding; Hans Kjeldsen
What will the Smart Grid Look Like?
IntroductIon Many people are asking, "What is the Smart Grid?" Many more are trying to define it with short "sound bite" descriptions. These short statements cannot adequately...
OPEC Production Likely To Remain Low
Gasoline and Diesel Fuel Update (EIA)
4 4 Notes: With a background of some weakening demand from weakening economies (being pushed lower by high crude oil prices), OPEC has shown not only a a reluctance to increase production any time soon, but has actually decreased production. OPEC has attempted to reduce production by 3.5 million barrels per day so far this year. The last of these cuts is not to occur until September, which will affect consuming countries the most over the upcoming winter. Tightness in both European (Brent price) and Asian (Dubai price) markets are reflected in the recent strength seen in the marker crude oil for these regions. But with the effect of the 2nd OPEC production cuts just taking effect and the effect of the 3rd production cut yet to come, U.S. crude oil stocks are
We report the discovery via radial velocity (RV) measurements of a short-period (P = 2.430420 {+-} 0.000006 days) companion to the F-type main-sequence star TYC 2930-00872-1. A long-term trend in the RV data also suggests the presence of a tertiary stellar companion with P > 2000 days. High-resolution spectroscopy of the host star yields T{sub eff} = 6427 {+-} 33 K, log g = 4.52 {+-} 0.14, and [Fe/H] = -0.04 {+-} 0.05. These parameters, combined with the broadband spectral energy distribution (SED) and a parallax, allow us to infer a mass and radius of the host star of M{sub 1} = 1.21 {+-} 0.08 M{sub Sun} and R{sub 1} = 1.09{sup +0.15}{sub -0.13} R{sub Sun }. The minimum mass of the inner companion is below the hydrogen-burning limit; however, the true mass is likely to be substantially higher. We are able to exclude transits of the inner companion with high confidence. Further, the host star spectrum exhibits a clear signature of Ca H and K core emission, indicating stellar activity, but a lack of photometric variability and small vsin I suggest that the primary's spin axis is oriented in a pole-on configuration. The rotational period of the primary estimated through an activity-rotation relation matches the orbital period of the inner companion to within 1.5 {sigma}, suggesting that the primary and inner companion are tidally locked. If the inner companion's orbital angular momentum vector is aligned with the stellar spin axis as expected through tidal evolution, then it has a stellar mass of {approx}0.3-0.4 M{sub Sun }. Direct imaging limits the existence of stellar companions to projected separations <30 AU. No set of spectral lines and no significant flux contribution to the SED from either companion are detected, which places individual upper mass limits of M{sub {l_brace}2,3{r_brace}} {approx}< 1.0 M{sub Sun }, provided they are not stellar remnants. If the tertiary is not a stellar remnant, then it likely has a mass of {approx}0.5-0.6 M{sub Sun }, and its orbit is likely significantly inclined from that of the secondary, suggesting that the Kozai-Lidov mechanism may have driven the dynamical evolution of this system.
Fleming, Scott W.; Ge Jian; De Lee, Nathan; Jiang Peng; Lee, Brian; Nelson, Ben [Department of Astronomy, University of Florida, 211 Bryant Space Science Center, Gainesville, FL 2611-2055 (United States); Barnes, Rory [Department of Astronomy, University of Washington, P.O. Box 351580, Seattle, WA 98195 (United States); Beatty, Thomas G.; Gaudi, B. Scott; Shappee, Benjamin J. [Department of Astronomy, Ohio State University, 140 West 18th Avenue, Columbus, OH 43210 (United States); Crepp, Justin R. [Department of Astronomy, California Institute of Technology, 1200 E. California Blvd., Pasadena, CA 91125 (United States); Esposito, Massimiliano; Femenia, Bruno; Gonzalez Hernandez, Jonay I. [Instituto de Astrofisica de Canarias (IAC), E-38205 La Laguna, Tenerife (Spain); Ferreira, Leticia; Porto de Mello, Gustavo F. [Observatorio do Valongo, Universidade Federal do Rio de Janeiro, Ladeira do Pedro Antonio, 43, CEP: 20080-090, Rio de Janeiro, RJ (Brazil); Gary, Bruce; Hebb, Leslie; Stassun, Keivan [Department of Physics and Astronomy, Vanderbilt University, Nashville, TN 37235 (United States); Ghezzi, Luan, E-mail: email@example.com [Laboratorio Interinstitucional de e-Astronomia, LIneA, Rua Gal. Jose Cristino 77, Rio de Janeiro, RJ-20921-400 (Brazil); and others
US Biofuels Inc USB | Open Energy Information
US Biofuels Inc USB Jump to: navigation, search Name US Biofuels, Inc (USB) Place Delaware Sector Biofuels Product A Delaware corporation and a wholly owned subsidiary of...
SF6 Emissions Overview
SF 6 Emissions Overview Joanna Eckstein and Penny Avery Sandia National Laboratories is a multi-program laboratory managed and operated by Sandia Corporation, a wholly owned...
Sandia National Laboratories Information Technology Solutions
wholly owned subsidiary of Lockheed Martin Corpo-ration, for the United States Department of Energy�s National Nuclear Security Administration under
The Sandia Cooler
Sandia National Laboratories is a multi-program laboratory managed and operated by Sandia Corporation, a wholly owned subsidiary of Lockheed Martin Corporation,
Sandia National Laboratories: About Sandia: Leadership: CFO ...
for Sandia Corporation. The corporation is a wholly owned subsidiary of Lockheed Martin Corporation that manages and operates Sandia National Laboratories, a multi-program...
The Sandia Cooler - Sandia National Laboratories: Exceptional ...
managed and operated by Sandia Corporation, a wholly owned subsidiary of Lockheed Martin Corporation, for the U.S. Department of Energy's National Nuclear Security...
ExxonMobil Research and Engineering Company (EMRE) is a wholly owned subsidiary of Exxon Mobil Corporation and is widely recognized for its expertise in development, design,...
Sandia National Laboratories TOPHAT� for the Alignment ...
Cameras can work during the day or at night ... Sandia National Laboratories is a multi-program laboratory operated by Sandia Corporation, a wholly
Lone Star Transmission LLC | Open Energy Information
LLC Place Juno Beach, Florida Zip 33408 Product Wholly owned subsidiary of FPL Energy, developing transmission lines. First project is the DFW Express high voltage DC...
ESS 2012 Peer Review - Linear Analysis of Power Electronics for...
Linear Analysis of Power Electronics for Energy Storage Systems Sandia National Laboratories is a multi-program laboratory managed and operated by Sandia Corporation, a wholly...
Future Energy Yorkshire | Open Energy Information
Future Energy Yorkshire Jump to: navigation, search Name Future Energy Yorkshire Place Leeds, United Kingdom Zip LS11 5AE Sector Services Product Leeds-based, wholly owned...
US Canadian Biofuels Inc | Open Energy Information
Canadian Biofuels Inc Jump to: navigation, search Name US Canadian Biofuels Inc. Place Green Bay, Wisconsin Zip 54313 Sector Biofuels Product US Canadian Biofuels Inc is the wholly...
Courting Toyota, Selling Kentucky: Conflict and Relationship Building in the Establishment of Toyota Motor Manufacturing of Kentucky, 1984-1989.
??This study is an examination of the social, economic, and governmental factors that surrounded the establishment of Toyota Motor Corporation's first wholly owned automobile plant� (more)
Bailey, Eric Shea
On the Design of Oxide Films, Nanomaterials, and Heterostructures for Solar Water Oxidation Photoanodes
this chapter was supported by Sandia National Laboratories.Sandia National Laboratories is a multi-managed and operated by Sandia Corporation, a wholly owned
Kronawitter, Coleman
Atomistic Modelling of H-microstructure Interactions
... Sandia Corporation, a wholly owned subsidiary of Lockheed Martin Corporation, for the U.S. Department of Energy's National Nuclear Security Administration�...
Very Low Mass Stellar and Substellar Companions to Solar-Like Stars From MARVELS V: A Low Eccentricity Brown Dwarf from the Driest Part of the Desert, MARVELS-6b
We describe the discovery of a likely brown dwarf (BD) companion with a minimum mass of 31.7 +/- 2.0 M_Jup to GSC 03546-01452 from the MARVELS radial velocity survey, which we designate as MARVELS-6b. For reasonable priors, our analysis gives a probability of 72% that MARVELS-6b has a mass below the hydrogen-burning limit of 0.072 M_Sun, and thus it is a high-confidence BD companion. It has a moderately long orbital period of 47.8929 +0.0063/-0.0062 days with a low eccentricty of 0.1442 +0.0078/-0.0073, and a semi-amplitude of 1644 +12/-13 m/s. Moderate resolution spectroscopy of the host star has determined the following parameters: T_eff = 5598 +/- 63, log g = 4.44 +/- 0.17, and [Fe/H] = +0.40 +/- 0.09. Based upon these measurements, GSC 03546-01452 has a probable mass and radius of M_star = 1.11 +/- 0.11 M_Sun and R_star = 1.06 +/- 0.23 R_Sun with an age consistent with less than ~6 Gyr at a distance of 219 +/- 21 pc from the Sun. Although MARVELS-6b is not observed to transit, we cannot definitively rule ...
De Lee, Nathan; Crepp, Justin R; Eastman, Jason; Esposito, Massimiliano; Femen�a, Bruno; Fleming, Scott W; Gaudi, B Scott; Ghezzi, Luan; Hern�ndez, Jonay I Gonz�lez; Lee, Brian L; Stassun, Keivan G; Wisniewski, John P; Wood-Vasey, W Michael; Agol, Eric; Prieto, Carlos Allende; Barnes, Rory; Bizyaev, Dmitry; Cargile, Phillip; Chang, Liang; Da Costa, Luiz N; De Mello, G F Porto; Ferreira, Leticia D; Gary, Bruce; Hebb, Leslie; Holtzman, Jon; Liu, Jian; Ma, Bo; Mack, Claude E; Mahadevan, Suvrath; Maia, Marcio A G; Nguyen, Duy Cuong; Oravetz, Audrey; Oravetz, Daniel J; Paegert, Martin; Pan, Kaike; Pepper, Joshua; Malanushenko, Elena; Malanushenko, Viktor; Rebolo, Rafael; Santiago, Basilio X; Schneider, Donald P; Bradley, Alaina C Shelden; Wan, Xiaoke; Wang, Ji; Zhao, Bo
HIV-1 Gag p17 presented as virus-like particles on the E2 scaffold from Geobacillus stearothermophilus induces sustained humoral and cellular immune responses in the absence of IFN{gamma} production by CD4+ T cells
We have constructed stable virus-like particles displaying the HIV-1 Gag(p17) protein as an N-terminal fusion with an engineered protein domain from the Geobacillus stearothermophilus pyruvate dehydrogenase subunit E2. Mice immunized with the Gag(p17)-E2 60-mer scaffold particles mounted a strong and sustained antibody response. Antibodies directed to Gag(p17) were boosted significantly with additional immunizations, while anti-E2 responses reached a plateau. The isotype of the induced antibodies was biased towards IgG1, and the E2-primed CD4+ T cells did not secrete IFN{gamma}. Using transgenic mouse model systems, we demonstrated that CD8+ T cells primed with E2 particles were able to exert lytic activity and produce IFN{gamma}. These results show that the E2 scaffold represents a powerful vaccine delivery system for whole antigenic proteins or polyepitope engineered proteins, evoking antibody production and antigen specific CTL activity even in the absence of IFN{gamma}-producing CD4+ T cells.
Caivano, Antonella [Institute of Protein Biochemistry, C.N.R., via P. Castellino 111, 80131 Naples (Italy); Doria-Rose, Nicole A. [Seattle Biomedical Research Institute, 307 Westlake Av, Seattle, WA 98109-5240 (United States); Dept. of Molecular and Cell Biology, University of Washington, Seattle, WA 98124-6108 (United States); Buelow, Benjamin [Seattle Biomedical Research Institute, 307 Westlake Av, Seattle, WA 98109-5240 (United States); Dept. of Pathobiology, University of Washington, Seattle, WA 98124-6108 (United States); Sartorius, Rossella; Trovato, Maria; D' Apice, Luciana [Institute of Protein Biochemistry, C.N.R., via P. Castellino 111, 80131 Naples (Italy); Domingo, Gonzalo J.; Sutton, William F. [Seattle Biomedical Research Institute, 307 Westlake Av, Seattle, WA 98109-5240 (United States); Haigwood, Nancy L. [Seattle Biomedical Research Institute, 307 Westlake Av, Seattle, WA 98109-5240 (United States); Dept. of Molecular and Cell Biology, University of Washington, Seattle, WA 98124-6108 (United States); Dept. of Pathobiology, University of Washington, Seattle, WA 98124-6108 (United States); De Berardinis, Piergiuseppe, E-mail: email@example.com [Institute of Protein Biochemistry, C.N.R., via P. Castellino 111, 80131 Naples (Italy)
Is the most likely model likely to be the correct model?
In this work, I test the hypothesis that the 2-dimensional dependencies of a deterministic model can be correctly recovered via hypothesis-enumeration and Bayesian selection for a linear sequence, and what the degree of ...
Yankama, Beracah
Results on Charmonium(?like) and Bottomonium(?like) States from Belle and BaBar
Spectroscopy results for Belle and BaBar are reported. A particular focus is put on new results of the X(3872) state with its radiative decays to J/?? and ??? its decay into J/?3? and the search for production in radiative Upsilon decays. Another focus is L?=?2 mesons in particlar a possible D?wave assignment to the X(3872) and the confirmation of an Upsilon D?wave state.
Jens S�ren; The Belle Collaboration
Hawking-like radiation does not require a trapped region
We discuss the issue of quasi-particle production by ``analogue black holes'' with particular attention to the possibility of reproducing Hawking radiation in a laboratory. By constructing simple geometric acoustic models, we obtain a somewhat unexpected result: We show that in order to obtain a stationary and Planckian emission of quasi-particles, it is not necessary to create a trapped region in the acoustic spacetime (corresponding to a supersonic regime in the fluid flow). It is sufficient to set up a dynamically changing flow asymptotically approaching a sonic regime with sufficient rapidity in laboratory time.
Carlos Barcelo; Stefano Liberati; Sebastiano Sonego; Matt Visser
Imitation Versus Communication: Testing for Human-Like Intelligence
Turing's Imitation Game is often viewed as a test for theorised machines that could `think' and/or demonstrate `intelligence'. However, contrary to Turing's apparent intent, it can be shown that Turing's Test is essentially a test for humans only. Such ... Keywords: Communication, Imitation Game, Philosophy of Artificial Intelligence, Turing Test
Jamie Cullen
Lab employees don't treat their trash like garbage
able to recycle 93 percent of its construction and demolition waste (almost 7,000 tons of debris and scrap materials) and reused more than 5,000 of the 20,188 cubic yards of clean...
The Final Brackets Are Being Set . . . For a Competition Like...
& Testimony Recovery Act Contact Information Office of Science U.S. Department of Energy 1000 Independence Ave., SW Washington, DC 20585 P: (202) 586-5430 03.20.13 The...
The Final Tickets Have Been Punched . . . For a Competition Like...
& Testimony Recovery Act Contact Information Office of Science U.S. Department of Energy 1000 Independence Ave., SW Washington, DC 20585 P: (202) 586-5430 04.01.13 The...
Using Artificial, Cell-Like 'Honey Pots' To Entrap Deadly ...
... host cells. One, the so-called "G" protein, acts as a spotter, recognizing and binding to a specific "receptor" protein on the surface of the target cell. ...
Newton-Like Methods for Sparse Inverse Covariance Estimation
Jun 7, 2012 ... LASSO: Other Losses (Likelihoods). https://sites.google.com/site/ eecs6898sparse2011/, 2011. [11] S. Sra, S. Nowozin, and S. J. Wright.
States with NEPA-like Environmental Planning Requirements | Department...
Federal NEPA Contacts Directory of Potential Stakeholders for DOE Actions under NEPA REPORT TO CONGRESS ON COMPETITION IN WHOLESALE AND RETAIL MARKETS FOR ELECTRIC ENERGY...
Action disambiguation analysis using normalized google-like distance correlogram
Classifying realistic human actions in video remains challenging for existing intro-variability and inter-ambiguity in action classes. Recently, Spatial-Temporal Interest Point (STIP) based local features have shown great promise in complex action analysis. ...
Qianru Sun, Hong Liu
A Tropical "NAT-like" belt observed from space
The optical properties of cold tropical tropopause clouds are examined on a global scale, using two years of space-borne lidar observations from CALIPSO (June 2006 ? May 2008). The linear depolarization ratio, color ratio and backscatter signal are analyzed in tropical clouds colder than 200 K in a way similar to recent studies of Polar Stratospheric Clouds (PSCs). It is found that the three categories of particles encountered in PSC (Ice, Sulfate Ternary Solutions or STS, and Nitric Acid Trihydrate or NAT) do also occur in tropical cold cloud layers. Particles with optical properties similar to NAT are few, but they cover the tropical belt and represent about 20% of cold cloud tropical particles. The optical behavior of these particles requires them to be small, non-spherical, optically thin, and persistent in the TTL at temperatures colder than 200 K; NAT particles and very small ice crystals meet these criteria.
Chepfer, H�l�ne; 10.1029/2008GL036289
A tropical � NAT-like � belt observed from space
The optical properties of cold tropical tropopause clouds are examined on a global scale, using two years of space-borne lidar observations from CALIPSO (June 2006- May 2008). The linear depolarization ratio, color ratio and backscatter signal are analyzed in tropical clouds colder than 200 K in a way similar to recent studies of Polar Stratospheric Clouds (PSCs). It is found that the three categories of particles encountered in PSC (Ice, Sulfate Ternary Solutions or STS, and Nitric Acid Trihydrate or NAT) do also occur in tropical cold cloud layers. Particles with optical properties similar to NAT are few, but they cover the hal-00439695, version 1- 8 Dec 2009 tropical belt and represent about 20 % of cold cloud tropical particles all year long. The optical behavior of these particles requires them to be very small, non-spherical, optically thin, and persistent in the TTL at temperatures colder than 200 K; NAT particles and very small ice crystals meet these criteria and are right now the best candidates to explain the presented observations. 2
unknown authors
A continuous gradient-like dynamical approach to Pareto ...
Apr 26, 2013 ... By time discretization, we make a link to recent studies of Svaiter et al. .... In order to prove the weak convergence of the trajectories of (MCSD).
Coal stocks at power plants are likely sufficient despite river ...
As of March 31, 2011, EIA estimates that coal-fired power plants in States identified in the map had an average of a two-to-three month supply of coal on hand.
Contested areas of South China Sea likely have few conventional ...
Tools; Glossary � All Reports ... weather; gasoline; capacity; nuclear; exports; forecast; View All Tags ...
Questions and Answers - What does the element krypton look like...
krypton. When this is done, krypton lights up in much the same way a fluorescent light bulb does and glows with a smokey-white light. This glowing gas is called a plasma. A...
Seborrheic dermatitis-like eruption following interleukin-2 administration
12 Department of Dermatology, Fukushima Medical UniversitySchool of Medicine, Fukushima, Japan Abstract We describe a
Kawakami, Yoshio; Nakamura-Wakatsuki, Taeko; Yamamoto, Toshiyuki
The phenomenon of fragmentation and spreading of a high-speed flying object resembling a meteorite is studied experimentally and theoretically. Experimentally, a model made of graphite is launched in a ballistic range and is made to fragment and spread. The flow field produced by the cloud of the fragments is observed optically. The observed deceleration and spreading behavior is numerically reconstructed using computational-fluid-dynamic calculations, applying an improved meteoroid fragmentation theory. The existing meteoroid fragmentation theory is improved by introducing the hypothesis that the incubation process of the pressurized fluid permeating through the fragment precedes the splitting process. The incubation time is determined by the ratio of permeability of the fragment to the fluid's viscosity and is much longer than the time for splitting given by the existing theory. Agreement is obtained between the observed and calculated behavior of the fragment cloud by appropriately choosing this ratio.
Park, Chul [Department of Aerospace Engineering Korea Advanced Institute of Science and Technology, Daejeon 305-701 (Korea, Republic of); Brown, Jeffrey D. [ERC, Inc., Moffett Field, CA 94035 (United States)
Two-axis tracker for solar panels and the like
A tracker including an outer post having elongated bore and a lower end mounted on a sub-structure, an inner pole rotatably received in the elongated bore, a lower bearing in the bore adjacent a lower end of the outer post and attached thereto to be constrained from lateral movement and mounted on the sub-structure such that a lower end of the inner pole rests on and is supported by the lower bearing, an upper bearing near an upper end of the outer post, a circumferential drive supported on the outer post for rotating the inner pole relative to the outer post, such that substantially a full weight of a load on the inner pole is directly transmitted to the sub-structure and lateral force and torque leverage are placed on a full length of the outer post by way of the upper and lower bearing.
Liao, Henry H.
Why Star Wars is not like the Manhattan Project
The absence of a viable plan appears to enhance the strength of the Strategic defense initiative (SDI) advocates' position that this is their opportunity to emulate the Manhattan Project. The author argues that this is a false analogy, that the critics need a less glamorous argument than identifying SDI with Star Wars. Quoting from Freemon Dyson's Weapons and Hope, he notes that the goal of rendering nuclear weapons obsolete is a grant technical folly more analogous to the nuclear airplane project. Rationalizations enable special-interest groups to pursue narrow technical concerns without worrying about the original goal. The driving force of the arms race has made the hydrogen bomb almost irrelevant through technical obsolescence, yet a decision not to test it might have deterred the Soviets as well. A rejection of Star Wars offers a similar opportunity to preclude a new arms race.
Tierney, J.
Heat exchanger for reactor core and the like
A compact bayonet tube type heat exchanger which finds particular application as an auxiliary heat exchanger for transfer of heat from a reactor gas coolant to a secondary fluid medium. The heat exchanger is supported within a vertical cavity in a reactor vessel intersected by a reactor coolant passage at its upper end and having a reactor coolant return duct spaced below the inlet passage. The heat exchanger includes a plurality of relatively short length bayonet type heat exchange tube assemblies adapted to pass a secondary fluid medium therethrough and supported by primary and secondary tube sheets which are releasibly supported in a manner to facilitate removal and inspection of the bayonet tube assemblies from an access area below the heat exchanger. Inner and outer shrouds extend circumferentially of the tube assemblies and cause the reactor coolant to flow downwardly internally of the shrouds over the tube bundle and exit through the lower end of the inner shroud for passage to the return duct in the reactor vessel.
Kaufman, Jay S. (Del Mar, CA); Kissinger, John A. (Del Mar, CA)
Quantifying disturbance rejection of SLIP-like running systems
The speed and maneuverability at which legged animals can travel across rough and cluttered landscapes has provided inspiration for the development of legged robots with similar capabilities. Researchers have developed a number of robots that can run ... Keywords: Legged robot, biologically-inspired robot, disturbance rejection, stability
Bruce Miller; John Schmitt; Jonathan E Clark
Nonthermal Electron Bernstein Emission in NSTX-Like Discharges
Technical Paper / Special Issue on Electron Cyclotron Wave Physics, Technology, and Applications - Part 2
R. W. Harvey; A. P. Smirnov; E. Nelson-Melby; G. Taylor; S. Coda; A. K. Ram
North American spot crude oil benchmarks likely diverging ...
Petroleum & Other Liquids. Crude oil, gasoline, heating oil, diesel, propane, and other liquids including biofuels and natural gas liquids. ...
Finding the Most Likely Infection Path in Networks with Limited ...
a new solution method based on a three step heuristic which (1) reduces the initial graph using a ...... Understanding individual human mobility patterns. Nature�...
Will electricity market reform likely reduce retail rates?
To win public support, proponents for electricity market reform to introduce competition often promise that the post-reform retail rates will be lower than the average embedded cost rates that would have prevailed under the status quo of a regulated monopoly. A simple economic analysis shows that such a promise is unlikely to occur without the critical assumption that the post-reform market has marginal costs below average costs. (author)
Woo, C.K.; Zarnikau, Jay
Piecewise uniform conduction-like flow channels and method therefor
A low-dispersion methodology for designing microfabricated conduction channels for on-chip electrokinetic-based systems is presented. The technique relies on trigonometric relations that apply for ideal electrokinetic flows, allowing faceted channels to be designed on chips using common drafting software and a hand calculator. Flows are rotated and stretched along the abrupt interface between adjacent regions with differing permeability. Regions bounded by interfaces form flow "prisms" that can be combined with other designed prisms to obtain a wide range of turning angles and expansion ratios while minimizing dispersion. Designs are demonstrated using two-dimensional numerical solutions of the Laplace equation.
Cummings, Eric B. (Livermore, CA); Fiechtner, Gregory J. (Livermore, CA)
Plasma Facing Materials for the JET ITER-Like Wall
PFC and FW Materials Issues / Proceedings of the Fifteenth International Conference on Fusion Reactor Materials, Part A: Fusion Technology
C. Thomser; V. Bailescu; S. Brezinsek; J. W. Coenen; H. Greuner; T. Hirai; J. Linke; C. P. Lungu; H. Maier; G. Matthews; Ph. Mertens; R. Neu; V. Philipps; V. Riccardo; M. Rubel; C. Ruset; A. Schmidt; I. Uytdenhouwen; Jet Efda Contributors
New Intrinsic Mechanism on Gum-like Superelasticity of ...
A Case Study in Future Energy Challenges: Towards In Situ Hard X-ray Microscopy of Photovoltaic Systems � A General Formalism to Model the Diffraction�...
Power gating design for standard-cell-like structured ASICs
Structured ASIC has been introduced to bridge the power, performance, area and design cost gaps between ASIC and FPGA. As technology scales, leakage power consumption becomes a serious problem. Among the leakage power reduction techniques, power gating ... Keywords: low power, power-gating, structured ASIC, via-configurable
Sin-Yu Chen; Rung-Bin Lin; Hui-Hsiang Tung; Kuen-Wey Lin
Evolution and dynamics of cusped light-like Wilson loops
We discuss the possible relation between the singular structure of TMDs on the light-cone and the geometrical behaviour of rectangular Wilson loops.
Frederik F. Van der Veken
Eye gaze assistance for a game-like interactive task
Human beings communicate in abbreviated ways dependent on prior interactions and shared knowledge. Furthermore, humans share information about intentions and future actions using eye gaze. Among primates, humans are unique in the whiteness of the sclera ...
Tam�s D. Gedeon; Dingyun Zhu; B. Sumudu U. Mendis
Like Fireflies and Pendulum Clocks, Nano-oscillators ...
... The work described in Nature is an advance in the field of �spintronics,� which takes advantage of the fact that the individual electrons in an electric ...
thermal, mechanical, and chemical properties. But given that graphene can form stripes, tubes, balls, ribbons, and other useful shapes, an important question is how shape...
Promise for Onion-Like Carbons as Supercapacitors
understanding of how such materials behave in EDLs. Given that graphene can form stripes, tubes, balls, ribbons, and other useful shapes, an important question is how shape...