The invention discloses a more concise and more practical ultrashort optical pulse sequence frequency multiplier, and belongs to the field of optical communication. Components of the ultrashort optical pulse sequence frequency multiplier are connected through the following manners: input and output of a first opto-isolator (21) are connected with output of a mode-locked laser (1) and a first port of a first 2*2 optical coupler (31) respectively; input and output of a second opto-isolator (22) are connected with a first port of a second 2*2 optical coupler (32) and a high-speed light oscilloscope (2) respectively; third and fourth ports of the first 2*2 optical coupler (31) are connected with third and fourth ports of the second 2*2 optical coupler (32) respectively; the second ports of the first and second 2*2 optical couplers (31 and 32) are connected with one ends of first and second polarization controllers (11 and 12) respectively; the other ends of the first and second polarization controllers (11 and 12) are connected through a polarization-maintaining single-mode fiber (4).


We refer to two articles by Duijvestein et al and Ciccocioppo et al 1 2 in which the authors suggest that administration of autologous bone marrow-derived mesenchymal stem cells (MSCs) is safe and feasible in the treatment of refractory Crohn's disease (CD). However, to date there are few data about allogeneic MSC transplantation (MSCT) for patients with inflammatory bowel disease (IBD).

We wish to report our experience of allogeneic MSCT in seven patients with IBD.

Infused allogeneic MSCs were obtained from the bone marrow or umbilical cord. Bone marrow was aspirated from healthy relatives of three patients. Umbilical cords were obtained from local maternity hospitals after normal deliveries. The isolated MSCs were given by intravenous infusions …


Fistulariidae species (Cornetfishes) exist in tropical and subtropical waters having four species; two of them are found in the Mediterranean Sea. This study records Fistularia petimba from the Syrian marine waters for the first time, filling the gap in its distribution along the eastern Mediterranean.


In order to improve the surface quality and prevention of corrosion and reduction of wear in the components like gears and bearings, they can be covered with phosphate coatings. SCM420H alloy steel was coated with manganese phosphate deposition. The microstructure and corrosion resistance of the coating was studied by change of bath pH. In order to investigate the phase analysis and coating microstructure, X-ray diffraction (XRD) and scanning electron microscopy (SEM) were used, respectively. XRD analysis from the coated surface revealed the phases of MnFe2(PO4)2(OH)2H2O, Mn(PO)3، Fe(PO)3 and (Mn,Fe)5H2(PO4)4•4H2O. Results showed the obtained coating at pH=2.1 was uniform and continuous and no crack or porosity observed. The phosphate surface at pH=1.9 and pH=2.4 was non-uniform and included cracks. In order to investigate the corrosion resistance, potentiodynamic polarization and electrochemical impedance spectroscopy (EIS) tests were applied on coated and uncoated specimens in 3.5% NaCl solution. The results of potentiodynamic polarization and electrochemical impedance spectroscopy tests were in agree with microscopic images. The results of electrochemical impedance spectroscopy demonostrated that the formed manganese phosphate deposition in bath with pH=2.1 had the highest polarization resistance (28020 Ω) compared to the formed coating in bath at pH=1.9 (1480 Ω) and the formed coating in a bath with pH=2.4 (3155 Ω).


There is ongoing controversy and limited data about the optimal timing to perform delayed percutaneous coronary intervention (PCI) in stable ST-segment elevation myocardial infarction (STEMI) patients who have missed opportunities for acute reperfusion therapy and are in absence of ongoing ischemia.

 To evaluate the effects of timing of delayed PCI on short- and long-term safety outcomes in stable STEMI patients.

 A cohort of 3,048 stable STEMI patients without acute reperfusion therapy who underwent delayed PCI were included in the study. Procedural timing was stratified into three groups: <3d, 3–7d, >7d. Primary outcomes were 30-day and 12-month major adverse cardiac events (MACE), a composite of death and reinfarction. Multivariate logistic and Cox regression models were performed.

 After multivariate adjustment, restricted cubic splines revealed a monotonic decrease in the risk of MACE with prolonged procedural timing (Figure-1). Delayed PCI on 3–7d and >7d were strongly associated with lower risks of MACE at 30 days (3–7d: Hazard ratio (HR) 0.43 [95% Confidence interval (CI) 0.18–0.99], P=0.046; >7d: HR 0.40 [95% CI 0.19–0.87], P=0.020) and 12 months (3–7d: HR 0.49 [95% CI 0.25–0.95], P=0.036; >7d: HR 0.42 [95% CI 0.22–0.77], P=0.006) compared with that on <3d. Delayed PCI on >7d also showed improvement in 12-month mortality (HR 0.45 [95% CI 0.22–0.91], P=0.026) over that on <3d, whereas procedure on 3–7d did not (HR 0.52 [95% CI 0.24–1.11], P=0.091). MI location and cardiac function had significant interactions with procedural timing for 12-month MACE (P-interaction=0.141 and 0.137). Procedural timing had more significant effects on MACE in patients with anterior MI or cardiac insufficiency.

 Delayed PCI over a week after symptom onset had significant improvement in short- and long-term safety in stable STEMI patients especially with anterior MI or cardiac insufficiency. Decision-making on optimal timing should identify the high-risk individuals and balance between ischemic benefits and safety.
 Figure 1

 Type of funding source: Public grant(s) – National budget only. Main funding source(s): National Twelfth Five-year Science and Technology Support Projects by Ministry of Science and Technology of China.


The combination of silicone emulsion and self-crosslinking polyacrylate emulsion was used as a binder for preparing a kind of water-borne ultra thin intumescent fire retardant coating for steel structure.The influence of the binder on the properties of fire retardant coatings was investigated.The experimental results show that the state of charring layer,fire retardant properties and intumescent rate of the coatings are improved by the addition of proper content of silicone emulsion.The coating has the superior properties when the content of silicone emulsion in the binder is 32.9%(by mass) and the content of binder was 16.7 %(by mass).


Indonesia's high dependence on soybean imports as a raw material for tempeh has brought various efforts to find a substitute of this raw material. One of the most potential substitute is lupin ( Lupinusangustifolius ). However, the mass adoption of these beans as raw material for tempe production is still low. In this study, we test effects of several ratios between soybeans and lupine, by using mix starters on the characteristics and quality of a substituted tempeh. The results indicated that the best treatment for the substituted tempeh was a 2 b 6 treatment with a 1: 2 ratio of soybeans and lupin by using the starter produced by Indonesian Institute of Sciences (LIPI). Moreover, the substituted tempeh has a low water and fiber content as well as sensory acceptable.


Autoradiography was employed to examine the incorporation pattern of 3 H-thymidine and 3 H-uridine into presumptive stratified squamous epithelial cells and prospective degenerating cells of the chick embryo esophagus. The incorporation pattern of 3 H- thymidine suggests that esophageal epithelial nuclei in the vesiculated region undergo interkinetic migration, synthesizing DNA at the basement membrane and moving to the free surface of the vesicles to complete the mitotic phase of the cell cycle. Incorporation patterns in prospective degenerating cells show a cessation of DNA synthesis correlating with the posterior-to-anterior degeneration gradient. No regionally specific pattern of 3 H-uridine incorporation was observed.


In continuation of our study on new types of analgesics, we synthesized various hexahydro-3-benzazocines. The synthesis of these compounds, starting from well-known intermediates, is described in this paper. The compounds do not exhibit biological activities worthy of further exploration.


The present invention discloses an intelligent robot mowers. Includes a vehicle body, running wheels, the vehicle body below the mowing machine, the mowing blades respectively connected to the speed reducer shaft running wheels, the travel drive motor output shaft and an encoder connected via the speed reducer, the output shaft of the gear unit between the two the navigation system is provided, the control system provided on a vehicle body, comprising a main control module, the drive control module, the sensor information processing module, a control module and a control module connected to the drive, the drive control module [8] is connected to the input terminal of travel drive motor encoder signal output terminal is connected to the drive control module, an ultrasonic sensor front edge of the vehicle body, the vehicle body front end caster, a battery provided on the vehicle body. The present invention does not need to set the cable and add markers can achieve unmanned autonomous lawn care, to achieve full regional coverage autonomous mowing, mowing high efficiency, no pollution, low noise, good security.


The main task of colleges is to cultivate creative talents.But the dullness of thoughts,the lack of teachers and educational investment,the incompleteness of teaching management,the limit of school characteristic,restricts the talents cultivating.To the problems in education,we should take countermeasurs to research and practise creative education.


The aim of research was to evaluate the variability and relations with forest health condition its main parameters (defoliation, dieback and epicormic shoots occurrence) in seven tree species: Norway maple (Acer platanoides L.), black alder (Alnus glutinosa L.), silver birch (Betula pendula Roth.), European ash (Fraxinus excelsior L.), English oak (Quercus robur L.), small-leaved lime (Tilia cordata Mill.), and white elm (Ulmus laevis Pall).
Research was carried out in 2018 in Trostyanetske Forest Enterprise (Left-bank Forest Steppe; Sumy region). Diameter (DBH), Kraft class, and category of health condition were assessed for each tree. Defoliation, dieback and epicormic shoots occurrence were evaluated as proportion of trees with respective symptoms. Severity of each parameter of tree health condition was estimated using respective scores.
No tree species is defoliated over 50%. A birch is characterized by the lowest health condition index (1.6) for living trees, dieback (10%), epicormic shoots occurrence (15.9%) and recently died trees proportion (0.7%), but high proportion of trees died over year ago (10.7%). An oak is characterized by the highest health condition index (2.1), proportion of trees with dieback (45.4%) and epicormic shoots (21.7%). Proportion of trees with dieback is 21.5 to 25% for alder, lime and maple, a bit higher for elm and ash (30.9 and 31.3% respectively).
DBH, Kraft class, and health condition index significantly correlate with health condition parameters of analyzed tree species, but the most of correlations are very slight and slight. Correlation between health condition index and defoliation score is significant, positive and high for all tree species (from 0.78 for alder to 0.9 for birch). Correlation between health condition index and dieback score is positive and significant for all tree species, is slight for ash, birch, lime, and alder, and moderate for maple, oak and elm. Correlation between health condition index and epicormic shoots occurrence is significant and positive for all tree species except birch, but is very slight in all cases except elm, where it is slight.


The design of reduced state, Kalman filters for an ESGM/SINS (Electrostatically Supported Gyro Monitor/Ships Inertial Navigation System) are described. The first filter is for resetting the SINS with navigation data from the ESGM; the second is for resetting the ESGM with position data from an external source. In the first case considerable test data are availalbe on which to model the Kalman filter, while in the second case the test data are extremely sparse. Two alternative designs are discussed in each case, and the best are utilized in an error analysis of the combined ESGM/SINS.


Women's sexuality as a developmental process has been described as fluid and contextual; is the same true for men's sexuality? This research investigated sexual identity development and change in attractions and sexual identity over time in sexual minority young adult women (N = 124) and men (N = 75), ages 18 to 26, who resided primarily in Wisconsin. This research tested whether an existing model of sexual fluidity applies to a new sample of women, and whether this model also extends to sexual minority men. In Study 1, participants completed an online questionnaire that measured sexual identity development, changes in attractions and sexual identity over time, contextual factors, and demographics. In the current study, 64% of women and 52% of men reported sexual fluidity, as measured by change in attractions. Compared to non-sexually fluid people, sexually fluid people were more likely to have engaged in past sexual behaviors with both genders, had greater identity uncertainty, were more likely to believe they are attracted to the person rather than gender, and to believe that sexuality is changeable. In Study 2, 18 participants (6 women, 8 men, 4 transgender) from Study 1 participated in an in-depth qualitative interview that included questions about sexual identity development, use of sexual identity labels, and interpretations of sexual fluidity. Focused and open coding procedures yielded 22 focused codes and 198 open codes that were categorized into higher order themes. The themes early indicators of sexual orientation, context of first questioning sexual identity, and current perceptions of sexual identity and changes were explored in depth. The facilitative environments model was developed to integrate these findings and provide an overall conceptual framework. This model proposes that sexual identity development and sexual fluidity occur at the intersections of individual (e.g., self-realization),


Abstract Spectroscopic changes observed on addition of nitrite to solutions of cobalt(II) tetra-sulfophthalocyanine ([Co(II)TSPc]4-) in the presence of N− 3 or ClO− 4 are reported. There is spectroscopic evidence for the oxidation of [Co(II)TSPc]4- to a [Co(III)TSPc]3- species in the presence of nitrite ions. Equilibrium and kinetic studies for the interaction between [Co(II)TSPc]4- and NO− 2 are reported. The rate was found to be first order in both [Co(II)TSPc]4- and NO− 2. The rate constant for the forward reaction, k f=1.6 × 10−4 dm3mol−1s−1 was determined at 20°C for the interaction between nitrite ions and [Co(II)TSPc]4- in the presence of NO3 − or ClO4 − ions.


When Bacurau (dir. Kleber Mendonça Filho and Juliano Dornelles, 2019) was released in Brazil, it was mainly received as a left-wing critique of the rise of the far right in the country's political landscape. But some critics argued that the feature's insistence on graphic violence was actually a celebration of barbarism, equating the oppressed villagers to their genocidal oppressors. This article refutes this view, borrowing from the analysis of science-fiction revenge fantasies and also following Foucault's genealogical perspective. It argues that Bacurau actually reenacts Brazil's foundational colonial violence through its complex temporality, in order to rediscover the forgotten past of real struggles that remain surreptitiously inserted in all levels of society, perhaps in the hope that new ways of resistance may flourish from its spectatorial experience.


Recognition of low-quality historical typewritten documents can still be considered as a challenging and difficult task due to several issues i.e. the existence of faint and degraded characters, stains, tears, punch holes etc. In this paper, we exploit the unique characteristics of historical typewritten documents in order to propose an efficient recognition methodology that requires minimum user interaction. It is based on a pre-processing stage in order to enhance the quality and extract connected components, on a semi-supervised clustering for detecting the most representative character samples and on a segmentation-free recognition stage based on a template matching and cross-correlation technique. Experimental results prove that even with minimum user interaction, the proposed method can lead to promising accuracy results.


We present A-typical machine learning (ML) based digital predistortion (DPD) solution for performance enhancement in analog optical front-hauls (OFH) for internet of things (IoT) based applications. Volterra based DPD has been realized in the past which becomes quite cumbersome due to complexity and choice of coefficients. Whereas the traditional Artificial Neural Networks techniques require time and optimization to determine the best model configuration. The proposed support vector regression (SVR) method is used that alleviates the nonlinearities and uplifts the OFH performance optimally. In this work, the experimental evaluation is made for 5G new radio (NR) signal having 256 quadrature amplitude modulation using 1550 nm Mach Zehnder Modulator and dispersion compensation fiber having 1 km link length. The experimental results suggest that SVR-DPD results in performance enhancement as compared to traditional volterra methods such as generalized memory polynomial, hence proving to be exceptionally operational.


The application of fast pulse, high intensity lasers to drive low cost DT point neutron sources for fusion materials testing at high ux/uence is investigated. At present, high power bench- top lasers with intensities of 10 18 W=cm 2 are routinely employed and systems capable of10 21 W=cm 2 are becoming available. These potentially oer sucient energy density for ecient neutron production in DT targets with dimensions of around 100 m. Two dierent target concepts are analysed | a hot ion, beam{target system and an exploding pusher target system | and neutron emission rates are evaluated as a function of laser and target conditions. Compared with conventional beam{target neutron sources with steady state liquid cooling, the driver energy here is removed by sacricial vaporization of a small target spot. The resulting small source volumes oer the potential for a low cost, high ux source of 14 MeV neutrons at close coupled, micro (1 mm) test specimens. In particular, it is shown that a laser driven target with100 J/pulse at 100 Hz (i.e.10 kW average power) and laser irradiances in the range I 2 10 17 10 19 W m 2 =cm 2 could produce primary, uncollided neutron uxes at the test specimen in the 10 14 10 15 nc m 2 s 2 range. While focusing on the laser{plasma interaction physics and resulting neutron production, the materials science required to validate computational damage models utilizing 100 dpa irradiation of such specimens is also examined; this may provide a multiscale predictive capability for the behaviour of engineering scale components in fusion reactor applications.


Background The performance of anesthetic procedures before operating room entry (e.g., with either general or regional anesthesia [RA] induction rooms) should decrease anesthesia-controlled time in the operating room. The authors retrospectively studied the associations between anesthesia techniques and anesthesia-controlled time, evaluating one surgeon performing a single procedure over a 3-yr period. The authors hypothesized that, using the anesthesia care team model, RA would be associated with reduced anesthesia-controlled time compared with general anesthesia (GA) alone or combined general–regional anesthesia (GA–RA). Methods The authors queried an institutional database for 369 consecutive patients undergoing the same procedure (anterior cruciate ligament reconstruction) performed by one surgeon over a 3-yr period (July 1995 through June 1998). Throughout the period of study, anesthesia staffing consisted of an attending anesthesiologist medically directing two nurse anesthetists in two operating rooms. Anesthesia-controlled time values were compared based on anesthesia techniques (GA, RA, or GA–RA) using one-way analysis of variance, general linear modeling using time-series and seasonal adjustments, and chi-square tests when appropriate. P < 0.05 was considered significant. Results RA was associated with the lowest anesthesia-controlled time (11.4 ± 1.3 min, mean ± 2 SEM). GA–RA (15.7 ± 1.0 min) was associated with lower anesthesia-controlled time than GA used alone (20.3 ± 1.2 min). Conclusions When compared with GA without an induction room for outpatients undergoing anterior cruciate ligament reconstruction, RA with an induction room was associated with the lowest anesthesia- controlled time. Managers must weigh the costs and time required for anesthesiologists and additional personnel to place nerve blocks or induce GA preoperatively in such a staffing model.


Abstract In this paper, an observer bank design for sensor fault diagnosis and fault-tolerant control schemes for wind turbines with hydrostatic transmissions are presented. The sensor faults are detected and isolated by several observers using different sensor signals. Starting from a detailed problem formulation that takes into account structured model uncertainties and external inputs, the sufficient conditions for robust observer and controller design are obtained by using multiple Lyapunov functions. Thereafter, the drive train is modeled and the resulting nonlinear continuous-time system is transformed into a discrete-time Takagi-Sugeno form. Within the latter model, a fault-tolerant control scheme is set up by means of a switched observer-based parallel distributed controller (PDC) structure, where only the observed state vector, which is not affected by sensor faults, is fed back. Finally, the obtained results are applied to a fault tolerant speed control for wind turbines with hydrostatic transmission in the presence of permanent pressure or displacement sensor faults.


Three-dimensional spatial filtering and measurement noise associated with experimental particle image velocimetry (PIV) measurements of wall-bounded flows are investigated via the application of the noiseless transfer function of PIV to the results of direct numerical simulations (DNS) and the comparison with real PIV measurements undertaken at the equivalent spatial resolution. For interrogation region dimensions typical of many PIV experiments the spatial filtering inherent in PIV is shown to significantly underestimate turbulent fluctuations, however in practical experiments this effect is largely offset by measurement noise. In order to determine the noise level and the noise-free effective spatial dynamic range of a given PIV measurement it is therefore necessary to compare experimental measurements in terms of the 1D velocity power spectra and the associated 1D transfer function of PIV, in both the absence of measurement noise and at the equivalent spatial resolution. In this paper the relationship between the 1D transfer function and the 3D transfer function of PIV is explained and a method for identifying the noise dominated scales is demonstrated using data from a tomographic PIV measurement of a turbulent boundary l yer. Following this method filtering is applied to reduce the influence of the noise dominated scales and provide experimental PIV velocity fields inline with that which should be generated by a noise free measure of a given spatial dynamic range.


A new scale-up concept for microwave assisted flow processing is presented where modular scale-up is achieved by implementing microwave cavities in series. The scale-up concept is demonstrated for case studies of a packed-bed reactor and a wall-coated tubular reactor. With known kinetics and reaction temperature, a packed-bed reactor gave a conversion of 99% with the highest production rate of 170 kgprod/kgcat·h for esterification of acetic acid and ethanol catalyzed by ion-exchange resin in 18 cavities. A similar approach for a multicomponent reaction of benzaldehyde, piperidine, and phenylacetylene catalyzed by a thin Cu film in a wall-coated tubular reactor gave 99% conversion with the highest production rate of 7740 kgprod/kgcat·h in 28 cavities. In both cases, the pseudo first order reaction rate with respect to the limiting reactant yielded a typical rise in conversion and production rate. In a packed-bed reactor-heat exchanger operated at a temperature between 343 and 348 K, the conversion in the e...


Abstract Dynamic properties of vibration isolators made with EPT vulcanizates may be controlled, within limits, by choice of compounding ingredients in the vulcanizate. The choice of compounding ingredients will also affect efficiency of the isolator in preventing transmission of vibrations at low temperatures. Efficiency of vibration isolation may be calculated by measuring dynamic spring rates at the temperatures of operation.


Various tests were performed on glass cap insulators under laboratory conditions. Laboratory methods were selected for a systematic insulator diagnosis on porcelain cap and long rod insulators. Electromechanical parameters of the aged insulators may be reduced to half the original value, to far below the required values. The power frequency wet test proved the ageing for other type of insulator strings too. The monitoring of leakage current impulses helps to follow the procedure. The selection of these impulses detects the mechanical defects of the insulators.


To identify the quorum-sensing system(QS) genes in Oxalobacter formigenes, QS-related genes from Vibrio fischeri and Pseudomonas fluorences were aligned with the genome sequence of O.formigenes. The genes hdtS and AGPA were chosen as the candidate QS-related genes, cloned by PCR into the vector pEASY- T3, and constructed into pET19- pp- histag. The resulting expression vectors designated pET19-hdtS and pET19-AGPA were transformed into Escherichia coli BL21(DE3), respectively,followed by the induction by IPTG. SDS-PAGE showed that the genes hdtS and AGPA were over-expressed in E. coli BL21(DE3). The hdtS gene, but AGPA not, was finally established to encode an acylhomoserine lactone(AHL) synthase via an AHL reporter strain, Agrobacterium tumefaciens NTIA(pZLR4) through the double- agar diffusion method. To the best of our knowledge, this is the first report on the cloning and identification of the QS-realted gene from O. formigenes, which is very helpful for better understanding of the quorum sensing system of O. formigenes and analysis of impact factors of its colonization in human intestines.


The ICT sector in South Africa is pivotal to economic development, and innovation as a corporate strategy is a logical response to the presence of industry related environmental conditions, in terms of competitive intensity, technological change and evolving product-market domains. Despite the importance of this sector, little in-depth research regarding corporate entrepreneurship has been undertaken in the ICT industry context. This study contributes to existing literature and extends current knowledge of corporate entrepreneurship by linking it with culture and firm performance. Based on a websurvey, 114 firms in the ICT sector were studied in terms of any evidence of an entrepreneurial orientation and culture, as well as organisational performance which was measured with various growth indicators. The empirical findings emanating from this study show that the entrepreneurship orientation and culture have a significant and positive relationship with higher company performance, adding support to all of the study hypotheses. The study provides guidance to managers and company leaders interested in undertaking intrapreneurial practices and accessing links to firm performance.


Objective: Tecomo. stans (T. stans)  (L) are plants extensively used for the empirical treatment of diabetes mellitus. But the bark part of T. stans (L) has not been extensively studied for the anti-diabetic and antioxidant property. Hence the current study were designed to estimate the in vitro activity of I±-glucosidase inhibition and antioxidant property from bark extracts of T stans using various solvents such as hexane, ethyl acetate and methanol.Methods: In the current study crude extract of T stans L. bark part has been evaluated for In vitro I±-glucosidase inhibition and antioxidant activity from hexane, ethyl acetate and methanol extract using standard methods.Results: Out of three solvents studied, methanol extract of T. stans L. (MeTs) showed 50% I±-glucosidase inhibition at the concentration of 645.20±2.79 I¼g/ml. The total phenolic content of MeTs was 206.81±1.11 mg of catechol equivalents/g extract. MeTs showed great scavenging activity on 2, 2-diphenyl-picrylhydrazyl (DPPH) (IC50 765.25±0.42 µg/ml), hydroxyl (IC50 245.12±1.41 I¼g/ml), nitric oxide (IC50 800.10±1.05µg/ml) and superoxide (IC50 595.15±0.59 µg/ml) radicals, as well as high reducing power. MeTs also showed a strong suppressive effect on lipid peroxidation (IC50 810.15±2.19 µg/ml). Conclusion: The results obtained in this study clearly indicate that MeTs has a significant potential to use as a natural a-glucosidase inhibition, antioxidant agent.Â


Abstract This essay examines several photographs taken during the second wave of the COVID-19 pandemic in India in 2021. It argues that the photographs capture an "atmo-terror" (terror from the air). The paper records the evolution of atmo-technics: alongside the dehumanization of the patient/sufferer, acts of resilience were reported and recorded. A "civil contract" of photography may be inferred from them.


Purpose: Global Tourism destinations provide different products which satisfy tourists with different interests, needs and wants. The general objective of the study was to establish the role of forest diversification in promoting tourism
Methodology: The paper used a desk study review methodology where relevant empirical literature was reviewed to identify main themes and to extract knowledge gaps.
Findings: The study concludes that forest tourism products were positively and significantly influenced the tourism sustainability (r=0.258, p=0.001). This meant that a unitary increase in the forest tourism products leads to an increase in tourism sustainability by 0.258 units.
Majority of the tourists' and destination operators agreed that cultural tourism experienced influenced tourism sustainability. Some of the cultural tourism practices experienced were visiting historical sites, tasting local food and drinks, listening to local music, witnessing local dancing, viewing local artifacts, visiting sacred sites, witnessing local basket making, sighting traditional homes, attending local cultural shows/events and local religious events and home staying in rural villages
Recommendations: The study recommends that forest tourism stakeholders should devise plans and ways of countering the challenges that face the forest tourism diversification These challenges included; inadequate relevant information about the forest tourism product; inadequate facilities in the forests such as rest centers, walking trails; poor quality services; unethical guiding practices such as request for tips, use of vulgar language; hostile residents; inadequate signage; unfavorable prices of forest activities; insecurity; unhealthy environment; poor communication facilities and inadequacy in tourism product diversity. These can be mitigated by building sustainable transport and communication infrastructure, encouraging community participation of the tourist resources, training tour guides, encouraging community visits to the sites and creating awareness on the importance to preserve tourist sites. The study suggested that cultural tourism practices in the indigenous forests in counties should be fully profiled and funds for its full establishment be allocated


Objective: To explore the clinical characteristics,provide a basis for the clinical diagnosis and treatment.Methods: We retrospectively analyze six clinical data of PPCM from January 2004 to June 2010.Results: After active treatment,six patients with PPCM were cured and left hospital,no neonate died.Conclusion: Enhance the survey of gestation,prevent and cure the risk factors activity,timely diagnosis,accurate cure can improve the result of gestation.The essential treatment is to strengthen the function of the heart and diuresis,to dilation the blood vessels if desired.Select the correct mode of delivery,select the suitable time of delivery.


"Under Labour employment in the United Kingdom rose by nearly four million. And yet the vast majority of the new jobs created were taken up by people moving into this country from overseas. Yet through all of those years we had around five million people on out-of-work benefits in this country – and many of them could and should have been working. It was a huge waste of human talent, and a huge failing for Britain – and that failing came at a vast cost to all of us. We can't afford to make the same mistake again."1


THESIS 8535%%%%The development of new pharmaceutical drugs is an expensive, timeconsuming
task with an often low success rate. Traditionally, once a therapeutic
target and its role in disease is identified, the process of identification of new drugs
was performed through combinatorial chemistry. This is a technique for rapidly and
systematically assembling a variety of molecular entities, or building blocks, in
many different combinations, to create tens of thousands of diverse compounds that
can be tested or screened with in vitro assays to identify potential valuable
candidates. Chapter 1 gives a general overview of vHTS techniques and algorithms
with particular emphasis to those methods that will be used later in the following
chapter.


Innovations are being diffused to the farmers' community through various communication media. However, which communication media is favorably utilized by the poultry farmers are not yet identified. The purpose of the study was to determine the extent of the exposure to communication media by the poultry farmers in receiving information. Attempts were also made to explore the relationship between the selected characteristics of the poultry farmers and their extent of exposure to communication media. Data were collected from randomly selected 60 poultry farmers of three villages of Jalma union under Batiaghata Upazilla of Khulna district, Bangladesh. Major percentage (58.3%) of the respondents showed medium exposure to individual media, however, most of them are little exposed to group and mass media (85% and 75% respectively). Irrespective of the type of media, lower level of exposure was expressed by most of the respondents (90%). Among the 16 communication media under three board categories, the respondents were highly exposed to neighbor and less exposed to radio. The personal characteristics of the poultry farmers as level of education, farm size and participation in training showed a positive significant relationship with their extent of use of communication media. Individual media (e.g. Information from neighbor) was most favorably utilized by the poultry farmers for receiving information regarding farming.
South Asian J. Agric., 8(1&2): 6-12


Fixed partial denture education is a subject that requires both solid foundation of theory and skillful techniques in practice.It is also the core subject in stomatology technology education.So the quality of the teaching directly affects the students' competency.Therefore,the authors try to explore and develop some new teaching methods during their teaching.The key points should be emphasized and tried to give students direct view of certain models while teaching theories.Then the authors strengthen the training of the practical skills and set up independent systems of experimental teaching and corresponding evaluation criteria,combining learning,teaching with real industry,which means the school cooperates with some companies and students are sent to these companies for internship.Via these approaches,as discussed in this paper,the teaching effect of the subject has been improved.


Fishing communities depend on natural resources to ful�ll their livelihood needs, making them more vulnerable during climatic events. However, despite the impacts brought by climate hazards, �shing communities have adaptation strategies and the capacity to be resilient. The study assessed �shing communities' exposure and capacity to adapt to various climatic events by determining their resilience to natural hazards. A focus group discussion (N = 80) and stakeholder meetings (N = 100) were conducted to assess the resilience of �shers in selected �shing villages in Surigao del Sur. A total of six �shing villages with 10–15 �sher participants attended the focus groups. Twelve behavioral indicators were used for the three components of resilience: preparedness, coping, and adaptive capacity. The �nding shows that Habag and Nurcia were most exposed to climate hazards among �shing villages in Surigao del Sur, with an average of 3.14. However, Nurcia village had the highest average of 3.33 in preparedness capacity, such as conducting training and seminars on climate hazard awareness. In addition, Nurcia also had the highest average of 4.00 in coping capacity, such as having communication connectedness through an active organization. Overall, Nurcia was the most resilient to climate hazards. Despite their exposure to natural hazards and stressors, �shers in the communities have common connectedness that helps them recover easily and take necessary actions to mitigate the impacts of natural hazards. The local government units should be more active in providing relevant policies, regulations, and assistance to help affected areas during natural hazards.


An electronic device with a distance measurement function comprises a lens, a photosensitive element and a processing unit. An original state is set on the electronic device, and when in the original state, focal length and image distance of the lens are respectively set as the initial focal length and the initial image distance. The processing unit is used for adjusting the lens when a to-be-shot object is subjected to image formation on the photosensitive element, till the image formation of the to-be-shot object is clear. The processing unit, after adjusting the lens, is further used for detecting variable values of the focal length and the image distance of the lens, respectively calculating the current focal length and the current image distance of the lens according to the initial focal length and the initial image distance, and calculating current object distance of the electronic device according to relation of the focal length, the image distance and the object distance of an object imaging formula as well as the current focal length and the current image distance. The invention further provides a distance measurement method. By the electronic device with the distance measurement function and the distance measurement method, distance from the to-be-shot object to the electronic device can be measured easily without involving infrared elements of an infrared detector and the like.


After the Third Plenary Session of the 18 th CPC Central Committee,a new round of salary system reform was begin.The reform aims to build enterprises characteristics and fully reflects the post classification performance and management requirements of the classification of the income distribution system. Energy,tobacco,financial and the other high income industry is the key point of the reform. Employees based on the tobacco industry as an example,using questionnaire method to research the staff salary fairness and discussed.


taken into account in interventions. Knowledge of their characteristics will help develop strategies to involve them in the fight against HIV. This study aimed to describe the sociodemo-graphic and behavioural characteristics of RSP of fsw in Bobo-Dioulasso. Methods The study included baseline data of the Yèrêlon cohort (fsw cohort) formed between December 2003 and March 2011. A standardised questionnaire was administered face to face to fsw to gather information on their RSP. Data were entered into Access and analysed with stata11. Results We included 918 women (seaters, roamers, bar waitresses, sellers, cabarets and others). The median number of RSP pers fsw was 2 (range 0–5). These RSP were considered by the fsw as "boy-friends" (52.9%) and the relationship lasted less than a year (39.2%). They were of unknown age (62.5%), single (52.7%), national of Burkina Faso (94.9%), residing in Bobo (89.3%), travelling often (33.0%), using condoms consistently (28.4%). RSP of fsw had secondary or higher level of education (55.2%), and another regular sex partners (68.2%).


Chondrosarcomas of the jaws are rare tumors; an additional case in the maxilla is described. The literature that discusses the pathogenesis of the tumor, its biological behavior, and the preferred treatment is reviewed. The histologic differentiation between chondrosarcoma and benign cartilagenous tumors is discussed.


This study provides descriptive data on the incidence of masturbation and sexual intercourse in a sample of students aged between 15 and 21 years old from Hefei City, China. Students from four schools were asked to complete a questionnaire on a range of sexual practices and attitudes. The results show that out of a sample of 3386 students, 15.4% reported in engaging in masturbation and 5.46% had a sexual intercourse relationship with the opposite sex four weeks prior to the survey. The findings also reveal significant gender differences in sexual activity. Of the students who reported being sexually active, the majority engaged in unsafe sexual practices. The results suggest the need for further safe sex education among young people in China. (author abstract)


In the most recent years, cloud computing has come out as one of the main significant paradigms in the IT industry and has fascinated wide-ranging attention from both the academy and industry.Since this latest computing technology involves the users to trust their precious data to cloud providers, there have been increasing safety and confidentiality concerns on outsourced data. A number of schemes using attribute-based encryption (ABE) have been proposed; however, most of them undergo from rigidity in executing difficult access control policies. Moreover, in this paper we propose a hierarchical attribute-set-based encryption (HASBE) by extending cipher text-policy attribute-set-based encryption (ASBE) with a hierarchical structure of users, in order to realize scalable, supple, and fine-grained access control of outsourced data in cloud computing. Due to its hierarchical structure, the proposed scheme not only achieves scalability, but also acquires adaptability and fine-grained access control in supporting compound attributes of ASBE. In addition, to deal with user revocation more resourcefully than existing schemes, HASBE employs multiple value assignments for access expiration time. We formally prove the security of HASBE based on security of the cipher text-policy attribute-based encryption (CP-ABE) scheme and we analyze its performance and computational complexity.


Using tetragonal ZrO2 and lithium carbonate as starting materials, lithium zirconate absorbents were prepared using a high-temperature solid-state reaction. The crystal structure of the Li2ZrO3 material was analyzed using an X- ray powder diffractometer (XRD), the microstructure of all the samples was observed through scanning electron microscopy (SEM) and the CO2- absorption ability of the Li2ZrO3 material was studied using a thermogravimetric analyzer (TG). The experimental results show that the average particle diameter of ZrO2 powders has some effect on CO2-absorption by resultant Li2ZrO3 materials. Using nano-metric ZrO2 as a starting material, led to an enhanced absorption rate of Li2ZrO3 when compared with samples prepared with micrometric ZrO2. The crystalline structure of Li2ZrO3 has an effect on the CO2-absorption a-bility of the materials, monoclinic Li2ZrO3 displays little CO2-absorption ability, while Li2ZrO3 material with a major tetragonal phase has superior CO2-absorption ability. The concentration of the CO2 influences the rate of CO2 absorption.


Corporate sociology is a congeries of organizational, identity and axiological concerns. These concerns often turn history and human affairs upside down, denying, among other things, competencies on the part of humans while priestly and prophetic motifs dominate. Humans become but a pretext for corporate sociologists. This essay is a critique of some of the dominate practices of corporate sociology often fashioned in terms of a muddled Cartesian dualism. It proposes, paraphrasing the late historian-sociologist, Carl Becker, to remember that everyone is a sociologist. However, like any activity there are distinctions. Using Gilbert Ryle's differentiation in The Concept of Mind (1949) of knowing how from knowing that, the essay embraces the former as an anecdote to efforts at resuscitating an endeavor that lurches toward a moribund state. This entails a therapeutic intrusion via sociological informed perspectives into the limited discourses of the contemporary cultural apparatus that are increasingly mirrored in everyday life


A simple randomized algorithm is developed which computes the smallest enclosing disk of a finite set of points in the plane in expected linear time. The algorithm is based on Seidel's recent Linear Programming algorithm, and it can be generalized to computing smallest enclosing balls or ellipsoids of point sets in higher dimensions in a straightforward way. Experimental results of an implementation are presented.


Two-spot ladybirds Adalia bipunctata were collected from the populations of Western and Eastern Europe and Central Asia. The agent killing males at the early embryonic stage in these populations was identified as bacteria of the genus Spiroplasma. Bacteria found in A. bipunctata proved to be phylogenetically related to Spiroplasma ixodetis (typical line Y-32) found in tick Ixodes pacificus but not to Spiroplasma causing the death of male embryos in Drosophila.


Pure cinema is situated in terms of a larger aesthetic narrative that involves visual artists, theorists, intellectuals, and avant-garde filmmakers such as René Clair, Germaine Dulac, and Sergei Eisenstein. Hitchcock appears in this milieu in his relation to a German experimental cinema tradition, and most obviously in his work with F. W. Murnau at UFA studios from 1924 to 1925. The chapter traces pure cinema as an evolution of a silent cinematic ethos that championed pure form: shape, pattern, line, symmetry, and the freedom of expression of movement and time within a moving image medium.


Asbtract It is commonly recognized that software engineering practice, to achieve a good performance, depends on measurement. While the automation of a number of software engineering activities are receiving a lot of attention, it is not the case for measurement. However a good automated support seems to be essential to consolidate the measurement process practice. At present a common understanding is that automation requires software engineering environments and properly integrated tools. This paper provides a first approach to provide a set of requirements for a software engineering environment measurement service, taking as a basis the ongoing ISO work on software engineering environments services and INCOSE measurement tools survey criteria.


Cooperative communication is an efficient technology to obtain similar diversity and multiplexing gains of MIMO system through distributed antennas of different nodes. In amplify-andforward protocol the cooperative node directly amplifies and forwards the received signal from source node to destination node,which made the protocol efficient and easy to implement. This paper,for cooperative communication systems based on amplify-and-forward protocol,founds half-duplex time division system model,analyze the bound of amplifying coefficient,and inferential reasoning the maximum transmission rate for cooperative communication system based on amplify-and-forward protocol.


The invention provides an infrared touch system and a control method thereof. The infrared touch system comprises at least three infrared emitting borders, at least two infrared receivers and a controller, wherein each infrared receiver is respectively arranged an opposite angle position of an included angle of two adjacent infrared emitting borders and used for receiving infrared light emitted by the two adjacent infrared emitting borders; the controller is respectively connected with the infrared emitting borders and the infrared receivers; the controller is used for controlling all the infrared emitting boarders to emit infrared light in sequence, simultaneously controlling the infrared receivers corresponding to the infrared emitting boarders for emitting infrared light to receive the infrared light in sequence, and positioning the position coordinates of a touched object according to the infrared receiving data of all the infrared receivers. The infrared touch system provided by the invention has the advantages of simpler structure, cost-saving performance and lower calculation load.


One of the most significant recent issues for religious education in Catholic schools in the United States is the development, over a number of years, of a doctrinal content framework for approved textbooks. As the American experience has not been well documented this paper will focus on two tasks. Firstly, a description and contextualisation of the process that lead to the implementation of the current frameworks will be given. Secondly, some evaluative comments on the frameworks will be made with a view to initiating a dialogue on the place and role of textbooks in improving the quality of religious education in Catholic schools in the United States.


The present invention relates to a composition comprising a pesticide, a surfactant and an alkoxylated material. Further, the present invention relates to a surfactant comprising the alkoxylate and concentrate; relates to a pesticide by making contact with the concentrate or by the pesticide, the surfactant, and contacting the alkoxylate the method of preparing the composition; relates to the addition of the surfactant mixture comprises the use of pesticides and the alkoxylate in. The present invention also relates to a phytopathogenic fungi and / or plant growth and / or undesired insect or mite infestation and / or a method of regulating plant growth controlling undesirable, wherein the composition act on the respective pests which environment or the plants to be protected from the respective pests, soil and / or on undesired plants and / or crops and / or their environment. Further, the present invention relates to seed comprising the composition.


This paper proves that there are a lot of homophone-synonyms and metathesis-synonyms in existence which are exactly the characteristics of Modern Chinese. It also expounds that the two kinds of synonyms are produced by the fundamental characters of Chinese and Chinese characters. Besides these, the paper concentratively goes into the cause of formation, the character, the circumscription and the discrimination of theirs, and simply discusses the demarcation of the general synonyms.


A new emulator circuit for designing memcapacitor is proposed in this work. The suggested circuit is designed using a current conveyor transconductance amplifier (CCTA), a memristor and a capacitor. Behaviour of the proposed circuit has been examined for a frequency range of 0.6Hz to 6.4Hz with the help of simulations performed in LTSPICE using TSMC 180nm process parameters. It has been observed that the area inside lobes reduces with increase in frequency. In comparison to other emulators reported in literature, the suggested circuit uses fewer passive components and does not require analog multipliers, thus making it simple to design. The correctness and efficacy of the proposed design are verified using transient analysis, non-volatility analysis, and pinched hysteresis loops.


Tumor cell-derived exosomes have been proposed as non-cellular nanomeric vaccine which could induce potent antitumor immune response in mice. In order to develop the protocols to prepare tumor cell-derived exosomes for basic research and clinical trail, we isolated exosomes from ovalbumin (OVA)-expressing thymoma cells EG. 7-OVA by various preparation methods. We demonstrate the non-sedimentation method is simple, rapid, efficient with higher yield and purity of exosomes. EG. 7-OVA-derived exosomes are 40-100 nm in diameter sequestered by lipid bi-layer, and contain rich heat shock protein (HSP) and OVA. The result of the size distribution determination is consistent with the calculation by the visual microscopic inspection, with 90.4% particles at the range of 50-90 nm. Moreover, as a model antigen of the EG. 7 cells, OVA concentration in EG.7-derived exosomes can be regarded as a good quality control parameter. Therefore, we have established a platform to efficiently prepare exosomes for tumor immunotherapy.


By the combination of the computer technology and the physical training, we can better predict the training achievement. Then we can make the targeted training for the college students. Therefore, the combination of the physical training for the college students and the computer technology has become a trend. Middledistance running is one of the most important standards for the physical training of the college students. Improving the middle-distance running performance not only improves the physical quality of the college students, but also improves the perseverance of the college students. In this paper, we combine the LSSVM method with the GAS method and propose the improved LSSVMGAS method. In the experimental part, we use the LSSVMGAS method to predict achievement of the middle-distance running for the college students and achieve the better results.


Purpose Export marketers may have incentives to attempt real earnings management to avoid low reported earnings. Therefore, we attempted to verify the relationship between cost stickiness and real earnings management in the context of export marketing. Design/methodology/approach Data were collected from exporters that settle-accounts in December excluding financial businesses listed on the stock market from 2015 to 2019. Multiple regression analysis were employed to analyze the data. Findings - The results showed that there is a negative relationship between cost stickiness and real earnings management. In addition, the results showed that export marketers little attempt to offset the cost inefficiency caused by the increase in expense because of cost stickiness with opportunistic management activities through real earnings management. Rather, as the level of real earnings management appears lower, exporters showing cost stickiness are expected to report management performance based on actual marketing. Furthermore, exporters with a high level of managerial centrality or high managerial overconfidence little attempt to offset cost inefficiency caused by cost stickiness with real earnings management activities. Research implications or Originality - Our study is the first to investigate the quality of earnings information of exporters with cost stickiness. Based on the results, we suggested efficient marketing strategies for exporters.


Editorial: "Single-molecule biochemistry coming of age" (S.H. Leuba, J. Zlatanova). Part I Protein structural dynamics by single-molecule fluorescence polarization (J.N. Forkey, M.E. Quinlan, Y.E. Goldman). Single molecule force spectroscopy in biology using the atomic force microscope (J. Zlatanova, S.M. Lindsay, S.H. Leuba). Mechanical design of proteins studied by single-molecule force spectroscopy and protein engineering (M. Carrion-Vazquez, et al.). The importance of molecular structure and conformation: learning with scanning probe microscopy (B.L. Smith). Twisting and stretching single DNA molecules (T. Strick, J.-F. Allemand, V. Croquette, D. Bensimon). Part II Single molecule measurements of titin elasticity (K. Wang, J.G. Forbes, A.J. Jin). Analysis of single-molecule mechanical recordings: application to actomyosin interactions (A.E. Knight, C. Veigel, C. Chambers, J.E. Molloy). Structural and functional imaging with carbon nanotube AFM probes (J.H. Hafner, C.-L. Cheung, A.T. Woolley, C.M. Lieber).


In this thesis the use of Twitter by American and Dutch book publishers is analyzed. A
total of 617 tweets posted by sixteen American and Dutch book publishers were
subjected to a content analysis to find differences and similarities in the use of the
service. After that, interviews were held with eight Dutch book publishers to explain the
differences and similarities in the use of Twitter. The theory of social shaping of
technologies was used to explain the differences in use in the two distinctive local
contexts.
American book publishers appeared to make a more diverse use of Twitter by combining
participating and producing roles. The use of Twitter by Dutch publishers can mainly be
considered as an act of producing. The different shaping of the use of Twitter in both
contexts can be ascribed to the level of domestication of the technology in both
societies.


This research aimed to develop a CFD-model facilitating accurate prediction of the agglomeration process in spray drying at a reasonable computational expense. Besides establishing the importance of capturing droplet-shrinkage and obtaining better understanding of the flow-field inside spray dryers, a simplified mapping approach and a rigorous approach to agglomeration-modelling were proposed. The novel rigorous model tested at two distinct scales could accurately predict the trends in the final particle size distributions and distinguish agglomerate structures occurring under different conditions. This work constitutes significant progress towards estimating final powder properties and will prove useful in design of processes allowing controlled agglomeration.


Cultural Histories of the Material World , the third volume in the series of the same name, explores the ways human beings have shaped and interpreted the material world from the perspectives of some of the world's leading thinkers in archaeology, anthropology, art and design history, economic and landscape history, history of technology, philosophy, and literature. Through original contributions drawn from the editorial committee of the series, this collection self-consciously explores issues about material evidence, and attempts to show how attention to materiality can contribute to a more precise historical understanding of specific times, places, ways, and means. As Peter N. Miller writes in his introduction, "Objects ...'stage' evidence just as texts do, just as images can, just as performance does. One of these forms is not necessarily more eloquent, more perfect, more reliable than the others, only different in the way that different forms yield up their content."


Ternary content-addressable memory (CAM) is an associative memory which supports the storing of don't care ('X') bits. Field programmable gate arrays (FPGAs) are enriched with high speed hardware components such as memory elements, logical blocks, but do not have support for a TCAM. Researchers have emulated TCAM inside FPGAs using static random-access memory (SRAM) blocks, flip-flops, and lookup tables (LUTs). Power requirement of these emulated TCAMs is very high due to the parallel comparison of each bit of the search key with the stored words. In this paper, we present a bank-selective strategy to decrease the amount of power consumed by gate-based TCAM on FPGA. Instead of comparing the search key with all of the stored words, our proposed architecture compares the search key with a selected number of stored words based on classifier-bits in search key. A sample of 64×36 is implemented on Xilinx Virtex-6 FPGA with four banks, which reduced the power consumption by 44.8% compared to the state-of-the-art TCAM architecture. Hardware utilization of the proposed TCAM on FPGA with four banks is also reduced by 6% and 8% in the form of slice registers (SRs) and lookup tables (LUTs), respectively.


The invention relates to an inorganic mineral fiber ring crush strength-improvement surface sizing agent for papermaking and a preparation method thereof. The inorganic mineral fiber ring crush strength-improvement surface sizing agent comprises surface sizing starch and inorganic mineral fibers. The mineral fibers comprise composite mineral fibers, modified wollastonite or wollastonite. The inorganic mineral fiber ring crush strength-improvement surface sizing agent comprises 5-40wt% of the inorganic mineral fibers. The norganic mineral fiber ring crush strength-improvement surface sizing agent can greatly improve corrugated paper ring crush strength and improve a tensile index and folding strength of a coated paper.


Water extracts from the green microalga Chlorella sp. and from the red macroalga Halopithys sp. were evaluated for their biostimulant effects and activity against the soil-borne pathogen Rhizoctoniasolani on tomato. Extracts were applied on seed at 2.5, 5.0, 10.0 and 20.0 mg of dry biomass per mL of water.Both extracts increased seedling emergence by an average of 5.8%. Chlorella sp. extract increased seedling dry weight at all concentrations, particularly at 2.5 mg/mL (19.2%). Extract from Halopithys sp. increased dry weight only at 10.0 mg/mL (15.8%).Root rot disease caused by R. solani was reduced by Chlorella sp. extract at all concentrations, while the extract from Halopithys sp. reduced the disease at 10 mg/mL only. Both extracts did not reduce fungal colony growth; however, they caused abundant presence of hyphal cytoplasm coagulation.


In this paper, we introduce a slightly modified HOL (m-HOL) priority scheduling discipline. We consider a discrete-time single-server queueing system with two priority queues of infinite capacity and with the introduced priority scheme. We show that the use of generating functions is suitable for analyzing the system contents and the packet delay. The impact of the m-HOL priority scheduling on the performance measures is illustrated by some numerical examples. keywords discrete-time, queueing theory, dynamic priority scheduling, performance analysis


With the aid of coupled mode theory, this paper clarifies quantitatively the oscillation mechanism of the free electron laser in the submillimeter and far infrared wave region which is composed of a relativistic electron beam and periodic static magnetic field. First, on the basis of Maxwell's equations, the relativistic equation of motion for the electron and the equation of continuity for electrons, the coupled mode equations are derived which couple the electromagnetic wave mode (positive-energy wave) and electron plasma wave mode (negative-energy wave) propagated along a relativistic electron beam. Also, the spatial growth rate for these wave modes is obtained from these equations. Next, the energy relations for the electromagnetic and electron plasma wave modes are formulated, together with the discussion on the mechanism for energy exchange between these two modes. Finally, this paper considers the saturation in the laser output produced by trapped electrons in the electron plasma wave, and the efficiency of energy transfer from the kinetic energy of the electron beam to the laser output.


The traffic density on roads has been on an exponential rise since the advent of automobile revolution. Since then there has been some approaches for traffic management such as traffic light control based on load, traffic density calculation based on IR etc. An efficient algorithm using image processing techniques and intelligent control is proposed to completely obliterate traffic. The prototype has been developed and successfully tested using a miniature model of a rover and a wall mounted camera. In real time environments, this setup is analogous to cars with GPS and satellite cameras giving live traffic data on roads. The algorithm works in such a way that the vehicles are tuned to move at a calculated speed at which they avoid stopping at traffic signals which leads to reduction of traffic. This approach also helps us in the reduction of vehicle particulate emissions and improving the fuel efficiency, battery life in case of electric vehicles.


OBJECTIVE:To develop a method for the concentration determination of parecoxib in human plasma.METHODS:RP-HPLC method was adopted.The plasma sample was extracted with absolute ether.The determination was performed on Kromasil-C18(250 nm×4.6 nm,5 μm)column with mobile phase consisted of acetontrile-water (92:8) at the flow rate of 1.0 mL·min-1.Ibuproren (IBF) was used as internal standard and UV detection wavelength was set at 209 nm.Minimum injection interval was 30 min.RESULTS:The linear range of parecoxib was 73.69~442.16 μg·mL-1(r=0.999 2).The method recovery was 97.26%~99.24% and extraction recovery was 79.27%~80.51%.The RSD of intra-day and inter-day were less than 2.10%.CONCLUSION:The method is simple,rapid,accurate,reproducible and suitable for the determination of parecoxib concentration in human plasma.


In this paper, we propose an optimization scheme for degree distributions of LDPC codes that combines differential evolution and iterative simplex algorithm. In the proposed scheme, we find good check and variable nodes degree distribution and threshold by using differential evolution, and then, we further optimize check and variable nodes degree distribution that has enhanced code rate by using an iterative simplex algorithm. An iterative simplex algorithm consists of two simplex algorithms, optimizing ρ(x) and λ(x), respectively and iteratively. Some simulation results show that the proposed scheme finds degree distributions, better than those obtained by the differential evolution only, in terms of threshold and/or code rate. As an application of the proposed scheme, we report some new degree distributions with some new maximum degrees.


Abstract We show that if $u$ and $v$ are any two unitaries in a unital ${{C}^{*}}$ –algebra such that $\left\| uv\,-\,vu \right\|\,<\,2$ and $uv{{u}^{*}}{{v}^{*}}$ commutes with $u$ and $v$ , then the ${{C}^{*}}$ –subalgebra ${{A}_{u,v}}$ generated by $u$ and $v$ is isomorphic to a quotient of some rotation algebra ${{A}_{\theta }}$ , provided that ${{A}_{u,v}}$ has a unique tracial state. We also show that the Exel trace formula holds in any unital ${{C}^{*}}$ –algebra. Let $\theta \,\in \,\left( -1/2,\,1/2 \right)$ be a real number. For any $\in \,>\,0$ , we prove that there exists $\delta \,>\,0$ satisfying the following: if $u$ and $v$ are two unitaries in any unital simple ${{C}^{*}}$ –algebra $A$ with tracial rank zero such that $$\left\| uv\,-\,{{e}^{2\pi i\theta }}vu \right\|\,<\,\delta \,\,\,\text{and}\,\,\frac{1}{2\pi i}\tau \left( \log \left( uv{{u}^{*}}{{v}^{*}} \right) \right)\,=\,\theta ,$$ for all tracial states $\tau$ of $A$ , then there exists a pair of unitaries $\widetilde{u}$ and $\widetilde{v}$ in $A$ such that $$\widetilde{u}\widetilde{v}\,=\,{{e}^{2\pi i\theta }}\widetilde{v}\widetilde{u},\,\,\,\,\,\,\,\left\| u\,-\,\widetilde{u} \right\|\,<\,\in \,\,\,\text{and}\,\,\left\| v\,-\,\widetilde{v} \right\|\,<\,\in.$$


The status of fault patterns on part surfaces can provide valuable information about the condition of the manufacturing system. In this work, we aim to develop a reliable fault detection and diagnosis tool in order to assure the automated production of high-quality parts. Such a tool provides a means of integrating the manufacturing and design phases. Accurate detection of the part surface condition in manufacturing ensures the fault-free design of the manufacturing parameters and machine components. This paper introduces a mathematical transform that has the potential to detect faults in manufacturing machines. Specifically , the paper focuses on the decomposition of complex signals to allow the detection of faults. The Karhunen-Lo eve transform is investigated by means of numerically-generated signals. Numerical signals are studied to decompose a variety of signals, including deterministic, stochastic, stationary, and nonstationary signals. Finally, the potential utility of the proposed technique is discussed in the context of a newly-maturing manufacturing process. In the era of intelligent manufacturing, it is crucial that designers and manufacturers rely on the exchange of accurate information about part production. The surface precision of a part produced during manufacturing is a crucial source of information, often not accurately known to the In this work, we aim to improve and predict the part production process. Two tasks are crucial in accomplishing this goal: (1) quantifying the surface precision of parts produced from a manufacturing process; and, (2) designing/redesigning manufacturing machines and/or choosing machine parameters to produce parts with improved precision. The former is accomplished by introducing a mathematical means of detecting faults on surface prooles. The latter is accomplished by introducing a mathematical means of diagnosing the origin of these faults. In this work, we aim to close the design and manufacturing loop by providing accurate information about the fault status of parts and machine components. The detection and diagnosis of faults in manufacturing systems can provide valuable information for manufacturers and designers. Manufacturers beneet from a fault-free part production , while designers beneet from an accurate isolation of design problems. The elds of fault diagnosis and mechanical signature analysis have a signiicant history deviations in observed behavior from a set of \normal" behaviors. In this work, faults are monitored based on signals measured from a manufacturing system, such as part surface deviations and machine tool vibrations. Fault detection is the recognition of an unacceptable behavior; and fault diagnosis is the identiication of …


Objective To investigate the optimum techniques for processing Yuhuanlian with microwave. Methods Nine samples were obtained by orthogonal design. Thin-layer chromatography was used to determine berberine in Yuhuanglian. The content of berberine was taken as the index for the evaluation on the superiority of processing techniques. Results The optimal processing techniques for Yuhuanglian with microwave was suggested as follows:A2B2C3, moistened for 90 minutes, put 2 cm thick, with 80% of the microwave, heating 3 minutes. Conclusion The method is simple, easy to control, easy to use, easy to promote, and the quality of processed products is better.


An examination of our preconceptions about desire, together with a comparison of these with the available empirical evidence, leads to a theory in which desire is characterized as a cognitive phenomenon which is heavily influenced by social learning. Following an introductory outline, the second section clarifies what exactly is at issue in attempting to reduce conation to cognition. Section 3 assesses the conditions required for knowledge of our own desires, and this concern is extended in 4 to an appraisal of the role played by self-knowledge in the process of change through psychotherapy. The concluding section argues that the Social-cognitive Theory of Desire is compatible with contemporary neo-Dar-winian views of evolution.


Results: The study showed 0 cases of Type I (0.0%), 49 cases of Type II (50.0%), 46 cases of Type III (46.9%), and 3 cases of Type IV (3.1%) fistulas. Among the 98 fistula-in-ano operations were 27 (27.6%) of fistulotomies and 71 (72.4%) sphincter- preserving procedures (2 cases of coring-out+muscle filling+rectal mucosal advancement flap, 31 cases of coring-out+ muscle closure+rectal mucosal advancement flap, 28 cases of coring-out+cutting seton, and 10 cases of loose seton). After the sphincter-preserving operation, there were 4 cases (4/71, 5.6%) of recurrence. There were no major disorders of the anal sphincter. However, minor disorders of the anal sphincter (6/71, 8.5%, soiling) were found. Conclusions: The anal-sphincterpreserving procedure is very effective in preventing recurrence and anal incontinence, but these results are from a retrospective study with a small number of patients and the follow-up period was short. If further cases are collected and continuous follow-up is done, better results can be expected.


The purpose of the research is analysis of infection with intestinal cestodosis of young sheep in the plain and mountainous zones of the Republic of Dagestan.Materials and methods. For a number of years, on the basis of the Caspian Zonal Scientific Research Veterinary Institute – Branch of the Federal State Budgetary Scientific Institution "Federal Agrarian Scientific Center of the Republic of Dagestan", of the laboratory for the study of infective diseases of livestock and birds, we carried out studies of sheep fecal specimens from various regions of the Republic of Dagestan and tested various antiparasitic drugs.Results and discussion. It has been established that sheep cestodosis are ubiquitous in the Republic, although there are effective antiparasitic drugs, including those of domestic production. The infection extensity by Moniezia sp. in 2015 was 67.8%, Thysaniezia sp. – 12.5%, and Avitellina sp. – 6.2%. In 2016, infections continued to be recorded at a high level. In 2017, monieziosis of lambs was recorded with the infection extensity of 24.0–30.0% and with the infection intensity value of 1.5–6.4 sp. per animal. Avitellinosis was noted in 17.0–23.6 % of sheep with an infection intensity value of 1.0–4.8 sp. per animal. Cestodosis in sheep in 2019 are also found, but less frequently.


Immunity can be configured as a mechanism to protect constitutional rights and guarantees that have been or may be violated by acts of authority. In this sense, immunity is regulated by the Nicaraguan Constitution in a very broad perspective, but with limited by the established law. This kind of contradiction prompts us to review the stablished historical approach to Nicaraguan protection, then an analysis on how is legally carried out, with the purpose of lege ferenda that can inside on the new Constitutional Justice Law that is about to be approved.


The utility model discloses a billet on-line weighing device, comprising an elevating hydraulic cylinder, wherein two sides of the elevating hydraulic cylinder are respectively provided with a set of guide rod and a guide sleeve corresponding to the guide rod, an upper end of a piston rod of the elevating hydraulic cylinder and an upper end bolt of the guide rod are connected with an upper support beam, the guide sleeve and a cylinder bolt of the elevating hydraulic cylinder are connected with a support beam framework, a lower end of the support beam framework is fixedly connected with a lower support beam, and two ends of the lower support beam are respectively provided with a pressure transducer. The device can realize on-line weighing, and has the characteristics of a simple structure and accurate weighing.


The Okote Member from the northeast Turkana Basin of Kenya represents an exceptionally good archive of Early Pleistocene archaeological and fossil sites. Field study of the lower Okote Member and underlying deposits was conducted in detail at two sets of outcrops (500 to 1000 m long) separated by some 22 km of modern landscape. The examined sections (10 to 15 m thick) preserve two facies: interbedded sandstones, tuffs and mudstones (crevasse splay) and ribbon‐like bodies of sandstone/tuff (crevasse channel). Mudstones are overprinted with small carbonate nodules and sparse slickensides that are interpreted as evidence of weak soil development after the cessation of suspension deposition in a floodplain. The immaturity of the ancient soils implies that sediment accumulation was fairly rapid, yet the nodules and slickensides indicate seasonal contrasts in moisture. Episodically rapid sedimentation is suggested by the types of depositional environments and their structures, and indications of soft‐sediment deformation. Crevassing may have been influenced by rivers that flooded in response to monsoonal rainfall variations and the voluminous influx of fluvially reworked volcaniclastics to the basin. A well‐developed palaeosol directly underlying the lower Okote Member suggests that the deposits accumulated following a significant depositional hiatus. This basal contact, in addition to the apparent pervasiveness and penecontemporaneousness of the sedimentary facies, resembles a crevasse‐splay system deposited by a sub‐delta lobe or river avulsion. A paucity of lacustrine/deltaic indicators might indicate that the studied deposits correspond better with an avulsion origin. Sedimentation rates calculated from prior radiometric dating of tuffs tend to overestimate the timeframe of accumulation for individual strata of the lower Okote Member. Many appear to have formed on the order of 100 to 103 years, as suggested by facies, palaeosols and observations of modern crevasse splays. This cautions against using sedimentation rates alone to infer how much time a stratum preserving fossil/archaeological information represents.


Colorectal cancer (CRC) is the third most prevalent cancer and the second most common cause of cancer death; however, its early detection can improve the survival. Colonic polyps are considered one of the CRC's major risk factors. Throughout many biological processes and malignancies, the non-coding RNAs have essential functions. Certain long noncoding RNAs (lncRNAs), including H19, were supposed to be CRC possible biomarkers. Also, H19 has been reported to play a role in regulating the activity of β-catenin, a protein that regulates cell-to-cell adhesion, as well as gene transcription. The current work aimed to investigate the potential significance of LncRNA H19 relative serum expression level by quantitative polymerase chain reaction (q-PCR) and β-catenin by enzyme-linked immunosorbent assay (ELISA) as noninvasive biomarkers to discriminate between colorectal cancer and colonic polyps. The statistical analysis of the studied factors revealed that the serum expression of H19 and β-catenin in cancer cases were substantially greater than colonic polyp cases and normal control.
 Conclusion The relative expressions of H19 and beta-catenin in the serum can significantly discriminate patients with CRC from those with polyp and normal controls, which could help when screening for CRC.


The high temperature and solar radiation of the tropical regions can burn and reduce the fruits size of the pineapple. An alternative to the farmers of this crop is the shading of the plants, providing the climatic conditioning. Therefore, the objective was to evaluate the different shade conditions in the chlorophyll content and morpho-anatomy of pineapple leaves on fruit production. shading on the chlorophyll content, leaf morphology and anatomy, and pineapple productivity. The experiment was conducted in field and was of a randomized block design with four replicates of five treatments comprising 0% shading (pineapples grown in full sunlight), 45.0% shading (provided by adjacent cassava plants), 48.3% shading (provided by adjacent jack bean plants), and 30 and 50% shading (provided by shade netting). The anatomical, histological and biochemical characteristics of the leaves, along with the yield and percentage of sunburned fruits, were determined 16 months after planting the pineapples. Pineapples grown under natural shade provided by cassava or jack bean plants exhibited phenotypic plasticity with "D" leaves presenting trichomes of decreased length and vessel elements of reduced diameter. Under cassava shading, the thicknesses of the abaxial epidermis and chlorophyll parenchyma and stomatal density were increased, while the thickness of the aquiferous hypodermis and the percentage of sunburned fruits were reduced. Under jack bean shading, the thicknesses of the mesophyll, chlorophyll parenchyma and leaf blade were reduced. No significant differences in the yield of pineapple fruit were detected between treatments, although netting and shading by cassava produced significant reductions of sunburned fruit.


Project finance ("PF") is a method of raising long-term debt financing based on lending against the cash flow generated by the project...


Bioremediation is an attractive technology that utilizes the metabolic potential of microorganisms in order to clean up the environmental pollutants to the less hazardous or non-hazardous forms with less input of chemicals, energy and time. White-rot fungi are unique organisms which show the capacities of degrading and mineralizing lignin as well as organic, highly toxic and recalcitrant compounds. The key enzymes of their metabolism are extracellular lignolitic enzymes that enable fungi to tolerate a relatively high concentration of toxic substrates. This paper gives a brief review of many aspects concerning the application of white-rot fungi with the purpose of the industrial contaminants removal.


Following insights from disciplinary variation studies on writer's positioning and stance, there has been an interest in analyzing how academics engage in an academic interaction with their putative readers, by either fending off alternative views from their readers or allowing for the inclusion of their views. Using the engagement system of the appraisal theory propounded by Martin and White (2005) in analyzing 45 purposively sampled M.Phil. theses submitted to the departments of Linguistics, Geography and Resource Development and Nutrition and Food Science of the University of Ghana, the study examined the various engagement resources used by M.Phil. students to limit the dialogic space, on one hand, and to allow for the inclusion of the views of their readers, on the other hand, while reviewing the works of other scholars in the literature review section of their masters' theses. The study also probed further to examine the epistemological norms and conventions that inform the use of these resources in the theses submitted to the three selected departments.


Through a complex litigation strategy that involved "freedom of information" requests, budget analysis, and media dissemination, the Civil Association for Equality and Justice (Asociacion Civil por la Igualdad y la Justicia, or ACIJ) pressured the formerly reluctant government of the city of Buenos Aires, Argentina, to acknowledge a legitimate unsatisfied claim related to school vacancies for initial-level education and commit to making significant policy changes. This case study examines the ACIJ campaign and draws lessons for civil society engagement in public finance processes.


Focus of the paper is to explore the behavioural characteristics of recycled aggregate concrete shear wall using SAP2000. In India, earthquakes are becoming threats to the human being and sequentially construction waste has been increasing due to the fast development of construction industries. According to a survey, 7 to 8 million tons of concrete demolition wastes are produced in India. This study focuses on the potential use of recycled waste aggregate in development of reinforced concrete shear wall. The appropriateness of result is constrained by the kind of divider and parameter subspace. Various disappointment modes can happen contingent upon parameter, for example, a sort of cross-segment, support itemizing and amounts, properties of strengthening steel, concrete compressive quality and limit condition. Complex ruinous wonders incorporate solid splitting, cooperation impact among steel and solid, steel yielding and solid squashing in pressure under non-straight powerful investigation. At long last, the reused total solid shear divider can continue the seismic plan necessity of a structure.


Demographic-based identification plays an active role in the field of face identification. Over the past decade, machine learning algorithms have been used to investigate challenges surrouding ethnic classification for specific populations, such as African, Asian and Caucasian people. Ethnic classification for individuals of South Asian, Pakistani heritage, however, remains to be addressed. The present paper addresses a two-category (Pakistani Vs Non-Pakistani) classification task from a novel, purpose-built dataset. To the best of our knowledge, this work is the first to report a machine learning ethnic classification task with South Asian (Pakistani) faces. We conduted a series of experiments using deep learning algorithms (ResNet-50, ResNet-101 and ResNet-152) for feature extraction and a linear support vector machine (SVM) for classification. The experimental results demonstrate ResNet-101 achieves the highest performance accuracy of 99.2% for full-face ethnicity classification, followed closely by 91.7% and 95.7% for the nose and mouth respectively.


Though practical writing should be a humanistic curriculum which is combined by practical value and aesthetic value,in the actual teaching,its aesthetic value has always been ignored.In this paper,by comparison with practical writing and literature,we analyze the aesthetic elements behind the practicality of practical essys from three aspects—form,language and structure.Moreover,it puts forward on how to guide students to explore this beauty in the teaching process for teaching people through lively activities and beauty.


Low‐grade inflammation, endothelial dysfunction, and platelet hyper‐reactivity to agonists are associated with an increased risk of cardiovascular events. In vitro and animal studies infer an inverse mechanistic relationship between platelet activation and the production of endothelium‐derived nitric oxide and prostacyclin. This concept is supported by evidence of an inverse relationship between endothelial function and platelet activation in high‐risk cardiac patients. The aim of this study was to investigate what relationship, if any, exists between platelet and endothelial function in healthy, middle‐aged, and elderly adults. In 51 participants (18 male, 33 post menopausal female), endothelial function was assessed by flow‐mediated dilation (FMD). Platelet function was assessed by flow cytometric determination of glycoprotein IIb/IIIa activation (measured by PAC‐1 binding), granule exocytosis (measured by surface P‐selectin expression), and monocyte‐platelet aggregates (MPAs), with and without stimulation by canonical platelet agonists adenosine diphosphate (ADP), arachidonic acid (AA), and collagen. Correlation analysis indicated there was no significant (all P => 0.05) relationship between FMD and any marker of in vivo platelet activation (MPAs R = 0.193, PAC‐1 R = −0.113, anti‐CD62P R = −0.078) or inducible platelet activation by ADP (MPA R = −0.128, anti‐CD62P R = −0.237), AA (MPA R = −0.122, PAC‐1 R = −0.045, anti‐CD62P R = −0.142), or collagen (MPA R = 0.136, PAC‐1 R = 0.174, anti‐CD62P R = −0.077). Our findings contrast with two previous studies performed in high‐risk cardiac patients, which reported inverse relationships between platelet activation and endothelial function, suggesting that some compensatory redundancy may exist in the relationship between platelet and endothelial function in preclinical populations.


New Syntheses of Methyleniminium Salts from Carbonyl Compounds and from α-Chloro Ethers; an Access to Vinylogous Viehe Salts*

Two methods for the synthesis of isolable methyleniminium salts and amidinium salts are presented. In the first case carbonyl compounds A are treated with a mixture of (dialkyl-amino)trimethylsilane (12) and chlorotrimethylsilane (13) or 12 and trimethylsilyl triflate (14) leading to the iminium chlorides F or iminium triflates G, respectively. With 12/13 the preparation of F is limited to non-enolizable aldehydes and dimethylformamide (10), while 12/14 enables the preparation of G, e.g. 23a–25a, 27a, also with ketones and with substituted amides. The second procedure is based on the treatment of α-chloro ethers L with 12. Both methods afford the Mannich reagent 16a in high yields. By reaction of the α-chloro ether 35 with 12 in diethyl ether the vinylogous Viehe salts 36a–c, e become available for the first time. The reaction pathways are discussed.


Abstract
Nurse anesthesia residents experience high levels of stress while being enrolled in a post-baccalaureate nurse anesthesia program. Elevated levels of stress have been proven to limit one's ability to learn and commit new material to memory, all while inhibiting their academic and clinical performance. This study represents a quality improvement project that implements a Peer Mentorship Program (PMP) into a major University in the New England area of the United States. The study utilizes descriptive statistics to determine if implementation of a peer mentorship program can help to decrease nurse anesthesia resident's stress, while simultaneously increasing academic and clinical performance. Data gathered by the investigators of this study was composed of a Critical Action Point Checklist (CAPC); a set of objectives that were meant to be completed by the participants in order to help run a successful mentorship program. Additional data was collected using a Peer Mentorship Reflection Questionnaire at the end of the study to receive feedback about the Peer Mentorship Program. 56% of participants agreed that the Peer Mentorship Program helped to decrease stress during the study and 83.4% of participants agreed that they would like to see the Peer Mentorship Program continue for future cohorts at their nurse anesthesia program. The findings of this study suggest that more Nurse Anesthesia Programs should work to incorporate a Peer Mentorship Program for their nurse anesthesia residents to help develop safe, high-quality anesthesia providers for the future.


Holly's tooth is wobbly. It gets wobblier and wobblier and then falls out! But Holly's not sure she wants to give her pretty tooth up to the Fairy just yet - there are a few questions she wants to ask first! Open the little envelopes to discover the Tooth Fairy's replies and some special surprises.


The contribution, which is based on unpublished sources from the National Archives in London and the Political Archive in Berlin (Politisches Archiv des Auswärtigen Amts), aims to present and ana‐ lyze the British and German view of the complicated question of railway ‐building in China at the end of the Qing Empire era — concretely in the years 1907–1908. The author will turn his attention to the British and German economic interests in this country with special regard to the building of the Chinese railways, which were conducted by foreign companies. He will define the construction of railways as a policy of following the political and economic interests of the Great Powers in China. The contribution will also focus on the question of the British and German methods to gain railway concession and how successful London and Berlin was in its policy and whether it was able to take advantage of its opportunities.


Describes a low-frequency feed fitted inside the subreflector of a Cassegrain antenna. One such facility has been added to a 13-metre Cassegrain (GB13C) to enable it to work simultaneously in L-band (1.525-1.6605 GHz) and C-band (3.60-4.20/5.85-6.454 GHz). The radiating element is an annular slot inset into the subreflector surface and fed by a coaxial matching network carrying the TE/sub 11/ mode. The design of the TE/sub 11/ mode coaxial matching network was carried out using mode-matching software written for the purpose and including an accurate model for the self-admittance of the coaxial aperture. Dielectric loading was used at the aperture and at one other point in the network for mechanical reasons. A coaxial low pass filter is placed within the network. This was also designed using the mode matching software and is necessary to ensure high rejection of the C-band transmit band power. >


A new coagulation method,that is microwave radiation coagulation(MRC),and traditional coagulation methods were used to coagulate natural rubber and then compared properties of the rubbers.Suitable laboratory microwave coagulation conditions were explored by orthogonal test.Microwave radiation coagulation natural rubber(NR-m),acid coagulation natural rubber(NR-a)and natural coagulation natural rubber(NR-n)were prepared and their properties were studied,the results showed that,as to the physical and chemical properties,nitrogen content of NR-m are much higher than NR-a and NR-n,initial plasticity of NR-m is higher than NR-a.As to physical and mechanical properties,stretching stress and tensile strength of NR-m are higher than NR-a before aging,while tensile strength retention after aging of NR-m is lower than NR-a,but relatively higher than NR-n.As to the curing behaviors,vulcanization induction time of NR-m is shorter than either NR-a and NR-n,while maximum torque and curing rate are much higher.


Today global economy, computer security & computer ethics are the important and challenging issues of any information System. These issues we can solve by creating the awareness of the security and ethics education to our society. This paper is based on the importance of security awareness in the society and there dilemmas. I tried in this paper to solve the challenging problems in which occur to the computer security education also I have been pointed out the importance of the IT Security education.. End user computing is a big resource of any information system so that system must be secure and safe. Some peoples are technically perfect but they didn?t have any knowledge of data security, so those peoples are unable to solve the data security issues because technology can?t alone solve the problem controlled by the individuals. Security dilemma is a major problem of any nation. Any type of security education sometimes creates a problem to our self. In this paper we tried to solve the issues of data security dilemmas. we can say that this paper is based on the indistinguishable offence and defense in the information system.


Flavobacterium meningosepticum produced a peroxidase coordinately with a H2O2-forming nucleoside oxidase under culture conditions where the bacterium inducibly produced the nucleoside oxidase. The nucleoside oxidase and peroxidase both required Fe2+ or Fe3+ for their production, and Cu2+ enhanced the production of both enzymes. The addition of nucleoside analogs to the medium also enhanced the production of both enzymes. The time course of peroxidase production coincided with that of the nucleoside oxidase production. These results suggest that the peroxidase has a specific function related to the nucleoside oxidase reaction, in breaking down the H2O2 formed, which would otherwise cause oxidative cell damage.


The article deals with methodological issues of assessing the level of salaries of medical workers by official statistics bodies (Rosstat) and within the framework of surveys of medical workers themselves. The main methodological differences are shown in the methods of calculating the indicators characterizing wages used by statistical authorities and survey organizers. The main reasons leading to the discrepancy between the results of such assessments are shown. Among them, first of all, it is necessary to name different approaches to accounting for personal income tax, restrictions in the sample, etc. In addition, official statistics take into account not only wages, but also some other expenses in favor of employees. At the same time, the concept of "average number" is used, which is not taken into account in the framework of the conducted surveys. At the same time, the salaries of medical workers in order to assess the achievement of the targets set by the May Presidential Decrees should be correlated not with the average salary for the subject of the Russian Federation, but with the average monthly income from work. Such methodological differences create an objective basis for the discrepancy between the survey results and official statistical data and should be taken into account when interpreting the data obtained.