Background:Lipomas are benign mesenchymal tumors of soft tissue that can be found anywhere in the body: However their presence in oral cavity is very rare (4.4%).
Histopathologically lipomas are classified as simple lipomas and different variants. The present study describes the prevalence of oral lipomas with relation to patient's
age, their site of occurrence and histological pattern in Indian population.Methods:All cases of oral lipomas reported in the department of oral pathology and microbiology, N.I.M.S dental college Jaipur (India) from 2005 to 2017 for age,
gender, site of occurrence, histopathological pattern and treatment mode were reviewed. The published case reports of oral lipomas reported in Indian patients from
1976 – 2017 also reviewed through pubmed by using MeSH word; oral lipoma and combined the data with the data of present study to analyze the prevalence and
histopathological characteristic of oral lipomas in Indian population.Results:Total of 23 (14 males and 9 females) cases included in the study. The mean age was 34.3 years (range 17 – 71). The specific sites involved were buccal mucosa
(n = 9) Tongue (n = 5) buccal vestibule (n = 2) Lip (n -= 3) Floor of mouth (n = 1), palate (n = 2) and retro molar pad (n = 1). Histopathological examination revealed 11
cases were diagnosed as simple lipoma, 6 cases were fibrolipoma, 2 cases were angiolipoma, 1 case each of osteolipoma, myxolioma, angiomyxolipoma and hibernoma.
All cases treated with surgical excision only one case showed radiographical sign. This data was combined with the data of published cases (pubmed) of oral lipoma in
Indian population.Conclusion:Oral lipomas are rare neoplasms of oral cavity; only 49 published cases have been found from 1976 – 2017 in Indian population. Oral lipoma should be
considered as a differential diagnosis of oral soft tissue swelling. Surgical excision is the treatment of choice for all such tumors.


Jan Evangelista Purkyne (1787-1869) died 100 years ago. He was mourned by the entire Czech nation in whose cultural renaissance he had played a prominent part, and by many leading European physiologists and histologists who had sat at his feet and had been inspired by him. The unfamiliar but correct spelling "Purkyne" pronounced "Poorkeynie" must be explained. According to John, Purkyn6's nain biographer (John, 1959), there are at least nine different spellings of Purkyne's name in world literature. All this started with the unsuccessful attempt by a German priest to make a correct entry of Purkyne's Czech name into the Register of Birth of the little town of Libochowice. Purkyne himself learned the correct spelling of his name only whenhe entered Prague University and used it from then onwards in his private correspondence. In his publications he used the German version "Purkinje" until 1850 when he returned to Prague as professor of physiology. In this article the spelling is used as it appeared in Purkyne's contributions, and in those by others who referred to his work. Purkyne's catholic interests and original observations are well known. His annus mirabilis was 1832 when-after a seven years' war with the university authorities in Breslau-he was given a Ploessel microscope with an achromatic lens. Soon afterwards his assistant Adolf Oschatz (1812-1857) presented him with a new microtome (1842) which was far superior to the various modifications of the model described by John Hill (1717-1775) in 1770.


The effect of polymer concentration,coagulation bath temperature and bore liquid concentration on the performance of PES /PMMA blend hollow-fiber membranes,which were fabricated by phase inversion process were investigated. The addition of PMMA could improve hydrophilicity and overall performance of PES membrane. The results demonstrated that the pure water flux decreased gradually when the polymer concentration increased from 15% to 20%. However,the rejection and tensile strength increased. With the increase of coagulation bath temperature from 20 to 60 ℃,the pure water flux gradually increased,whereas both the rejection and tensile strength gradually decreased. In addition,with the increase of DMAc content in bore liquid,double finger-shaped voids on the cross-section of PES /PMMA hollow fiber membranes gradually transformed to a single row of finger voids. Meanwhile,the pure water flux first decreased and then increased. On the contrary,rejection decreased after slightly increasing,but tensile strength increased gradually.


Single-point diamond machining is a versatile technique for producing metal optics in conventional as well as unusual shapes. The diamond-turning process is now well enough understood and controlled that specular, low-scatter surfaces can be produced. However, the grooved nature of the surfaces makes it difficult to relate some of the surface characterization parameters used for polished optics to the performance of the diamond-turned parts in an optical system. For example, surface roughness derived from total integrated scattering measurements may be much different from the measured profile roughness. Thus it is important to understand the physical mechanisms involved in the various surface character-ization parameters such as total and angular scattering, reflectance, and absorption and their relation to the microtopography and metallurgical structure of the diamond-turned surfaces. The significance of the surface characterization will be discussed and examples of characterization techniques useful for diamond-turned optics will be described.


Fourteen metal benzylalkoxides, [L2M2(μ-OBn)2] (L=L1-H~L7-H, M = Mg or Zn), based on N,N,O-tridentate ketoiminate ligands have been synthesized and characterized. X-ray crystal structural studies of [(L4)2Mg2(μ-OBn)2] (4b)(L4-H = (Z)-4-((2-(dimethylamino)ethylamino)- (4-methoxyphenyl)methylene) -3-phenyl-1-phenyl- pyrazol-5-one) reveal that complex 4b is a dinuclear species with the geometry around the metal center is penta-coordinated bridging through the benzylalkoxy oxygen atoms in the solid state. The activities and stereoselectivities of these fourteen complexes toward the ring-opening polymerization of L-lactide and rac-lactide have been investigated. Polymerization of L-lactide initiated by these fourteen metal benzyloxides proceeds rapidly with good molecular weight control and yields polymer with very narrow molecular weight distribution. Experimental results show that among these metal benzylalkoxides, complexes 1b~7b all exhibit moderate to high stereoselectivity with Pr above the 80 % and complex 2b possesses the highest activity and stereoselectivity. It is interesting to note that complex [(L2)2Zn](2c) can be converted into complex [(L2)2Zn2(μ-OBn)2](2a) in the present of Zn(OBn)2 at room temperature.


Plateau gravel soil is widely distributed in the Tibet Plateau.The shear strength of gravel soil is closely related with the stability of slope.In the present research,large-scale shear tests on gravel soils in China and abroad are reviewed firstly.By using the large-scale indoor and field dual-purpose direct shear apparatus,the mechanical properties of gravel soils in Bangpu mining area in Tibet are analyzed.Furthermore,in association with direct shear test and indoor test results as well as theoretical formulas,a geological model is established in FLAC3D to analyze the slope stability in this area.The research results offer a feasible method for similar analysis on gravel soils.


Regions along the Yangtze River in Shanghai are the main distribution area of tidal marshes in China.The ecosystem health has significant meaning for ecological safety in Shanghai and even the Yangtze River Delta.Ecosystem health assessment was accomplished through establishment of index system of PSR(Pressure-StateResponse)and entropy fuzzy comprehensive evaluation model,and the quality grading standards was worked out.It is divided into illness,general illness,sub-health,less-health and health.Results showed that Hangzhou bay beach,Nanhui beach,Pudong beach,Baoshan beach,Changxing beach,Hengsha beach,Chongming South beach and Chongming North beach were in the state of sub-health,Chongming West beach was in less-healthy state,the comprehensive health index of Chongming Dongtan and Jiuduansha were in the state of health.Peripheral islands beaches were generally healthier than mainland beaches.Comprehensive health degree was a comprehensive reflection of three mutually causal relationships between pressure health index,state health index and response health index.Pressure health index of the mainland beaches was lower than that of the peripheral island,and state health index of Jiuduansha and Chongming Dongtan was higher,and response health index of Chongming Dongtan and Jiuduansha was also higher than the others.Investigation and analysis results showed that the environment of tidal marshes was under main stresses including high-intensity enclosure,environmental pollution and biological invasion.Tidal marshes area was reduced,community structure was changed and ecological function was degraded under multiple-stress for nearly 30 years.In order to maintain ecosystem health and ecological security,combination of dynamic protection and utilization should be used on tidal marshes conservation management.Controlling development intensity and pollutant emission,strengthening the protection of tidal marshes especially mainland beach should to be key focus.Given that reducing the beach area is not due to human factors as a baseline,the legal system building should be strengthened as well as the efforts to recover tidal marshes ecosystem.Beyond that,promoting the control and management of invasive species can relieve the stress to the maximum extent.


Sudden death of gyneco-obstetric origin is rare in both American countries and the old continent, however, this type of death is conceptually relevant to Costa Rican legislation as it is the criterion of medical-legal autopsies, where not only the cause is answered of death, but also other objectives typical of the autopsy, such as the way of death, where one other than the natural one must be ruled out. Broken ectopic pregnancies are significant in current records according to the reason of maternal mortality, with repercussions on the reproductive health of patients who suffer from it, becoming a relevant pathology for clinical medical and forensic records. REVISTA MEDICINA LEGAL DE COSTA RICA Vol. 37 (2) Septiembre 2020 REVISTA MEDICINA LEGAL DE COSTA RICA


The study presented in this paper is carried out to support debate performance assessment in the context of debate skills training. The perception of good performance as a debater is influenced by how believable and convincing the debater's argumentation is. We identified a number of features that are useful for explaining perceived properties of persuasive speech and for defining rules and strategies to produce and assess debate performance. We collected and analysed multimodal and multisensory data of the trainees debate behaviour, and contrasted it with those of skilled professional debaters. Observational, correlation and machine learning studies were performed to identify multimodal markers of persuasive speech and link them to experts' assessments. A combination of multimodal inand outof-domain debate data, and various non-verbal, prosodic, lexical, linguistic and structural features has been computed based on our analysis and assessed used to , and several classification procedures has been applied achieving an accuracy of 0.79 on spoken debate data.


Abstract We grew a Li 6 Lu(BO 3 ) 3 :Ce 3+ single crystal as a new scintillator. And, the scintillation and thermoluminescence properties of the scin-tillator were determined. The emission spectrum of Li 6 Lu(BO 3 ) 3 :Ce 3+ is located in the range of 370~530 nm, peaking at 416 nm and439 nm, due to the 5d→4f transition of Ce 3+ ions. The fluorescence decay time of the crystal is composed two components. The fastcomponent is 34 ns (84%) and the slow component is 125 ns (16%) of the crystal. The afterglow is caused by the electron and holetraps in the crystal lattice. We determined physical parameters of the traps in the crystal. The thermoluminescence trap are composeda trap. The determined activation energy (E) and frequency factor (s) of the TL trap are 1.05 eV and 4.4×10 10 s -1 , respectively.Keywords : Lithium lutetium borate, Scintillator, Thermoluminescence, After-glow, Cerium, Neutron 1. 서론 섬광체 검출기는 유효원자번호(effective Z number)가 높고 검출기의 크기를 비교적 크게 만들 수 있어서, 의학, 물리학, 산업체 분야 등에서 방사선 검출기로 널리 사용되고 있으며[1,2], 방사선 검출효율이나 시간 특성을 개선하여 다양한 목적에 적합한 섬광체 검출기를 개발하여 활용하기 위한 많은 연구가 수행되고 있다[3,4]. 그 중에서 모체에 중성자반응단면적이 높은Li이나 B가 첨가된 섬광체는 중성자 검출용 방사선센서로 연구 개발되고 있다[5,6]. 입사된 중성자는 모체 중 포함된 B와 Li과 각각10 B(n, α)


Cloud Computing has been envisioned as the next-generation architecture of IT Enterprise. It moves the application software and databases to the centralized large data centers, where the management of the data and services may not be fully trustworthy. This unique paradigm brings about many new security challenges, which have not been well understood. This work studies the problem of ensuring the integrity of data storage in Cloud Computing. The introduction of TPA eliminates the involvement of the client through the auditing of whether his data stored in the cloud is indeed intact, which can be important in achieving economies of scale for Cloud Computing. The support for data dynamics via the most general forms of data operation, such as block modification, insertion and deletion, is also a significant step toward practicality, since services in Cloud Computing are not limited to archive or backup data only. We first identify the difficulties and potential security problems of direct extensions with fully dynamic data updates from prior works and then show how to construct an elegant verification scheme for the seamless integration of these two salient features in our protocol design. In particular, to achieve efficient data dynamics, we improve the existing proof of storage models by manipulating the classic Merkle Hash Tree construction for block tag authentication.


Abnormal regulation of epigenetic modifications forms the underlying basis of overexpression of inflammatory genes, and is a key component in several diseases including cancer and AIDS. The ability of nutrients to modulate epigenetic regulatory processes has offered potential explanations as to the role of diet in modifying disease risk. We have discovered a novel mechanism of epigenetic control by the micronutrient selenium (Se) in murine macrophages that could negatively impact the overexpression of proinflammatory genes. Supplementation of an endotoxins‐timulated murine macrophage cell‐line resulted in a significant decrease in the acetylation of histones and the non‐histone protein p65. Our studies demonstrate that Se inhibits the HAT activity of KAT3B (p300) via the modulation of cyclooxygenase (COX) pathway that involved Se‐dependent production of a stable antiinflammatory prostaglandin (PG) Δ12‐PGJ2. Furthermore, using biochemical, genetic, and molecular modeling studies, we show that Δ12‐PGJ2 covalently modifies a key cysteine residue in the HAT domain of KAT3B, thus inhibiting its activity. Se supplementation resulted in a similar decrease in histone acetylation when used in an HIV‐infection model. These studies suggest the ability of Se in epigenetic modulation of gene expression via an intriguing mechanism that involves endogenous fatty acid metabolites. NIH DK 077152


Poster advertising railways services. Illustration shows schoolchildren moving about on a railway station platform, in front of a steam locomotive.
The New Zealand Centennial celebrations in 1940 lasted from January to 16 November. A programme booklet at Eph-A-HISTORY-1940 shows that fixtures for the Canterbury province were concentrated in the period of 8-15 April, with pageantry, displays, and the National Maori celebrations for the South island. Other events took place in Canterbury in the longer period March-June 1940.
Quantity: 1 colour art print(s).
Physical Description: Chromolithograph, 890 x 570 mm.


Among some of the difficult problems still to be solved mi hand surgery, repair of flexor tendons in the digital sheath is not the least. It is generally agreed that inn a single fresh cut of the flexor profundus between the distal imisertion and the middle third of the middle phalanx, primary suture can give good results (Figs. 1-A through 2-C). It. is quite differemit, however, whemi the w'ound is located more proximally and both tendons are cut. Most authors say it is wise not to undertake immediate tendon repair when both flexor tendomis are divided in Bunnell's no man's land. Treatment. is limited to closing


The present research work, arises from the limitation of the use of children stimulation techniques of the second year of basic education of the rural school "Ambrosio Noriega". To reach the conclusions and recommendations we study the problem description, general and specific objective. In the analysis of the theoretical framework, we emphasize the study variables: stimulation techniques and the development of reading macro – skills.
In relation to the methodological framework, we used different methods such as thee scientific and logical methods: inductive, deductive, analytical and synthetic, it is evidenced during its development. The design was non-experimental because we refer to the phenomenon investigated and of field because we have to go to the place of the scene.
The technique used was direct observation which it is a qualitative approach; and the instrument or observation guide. The problems found were that teachers have limitations in the stimulation of learning which results in the macro-skills process of reading.


We report the discovery of a very large, spatially extended Lyα-emitting nebula at z = 2.656 associated with a luminous mid-infrared source. The bright mid-infrared source (F24 μm = 0.86 mJy) was first detected in observations made using the Spitzer Space Telescope. Existing broadband imaging data from the NOAO Deep Wide-Field Survey revealed the mid-infrared source to be associated with a diffuse, spatially extended, optical counterpart in the BW band. Spectroscopy and further imaging of this target reveals that the optical source is an almost purely line-emitting nebula with little, if any, detectable diffuse continuum emission. The Lyα nebula has a luminosity of LLyα ≈ 1.7 × 1044 ergs s-1 and an extent of at least 20'' (160 kpc). Its central ≈8'' shows an ordered, monotonic velocity profile; interpreted as rotation, this region encloses a mass M ≈ 6 × 1012 M☉. Several sources lie within the nebula. The central region of the nebula shows narrow (≈365 km s-1) emission lines of C IV and He II. The mid-infrared source is a compact object lying within the nebula but offset from the center by a projected distance of ≈2.″5 (20 kpc), and likely to be an enshrouded AGN. A young star-forming galaxy lies near the northern end of the nebula. We suggest that the nebula is a site of recent multiple galaxy and AGN formation, with the spatial distribution of galaxies within the nebula perhaps tracking the formation history of the system.


For a New Critique of Political Economy by Bernard Stiegler. Translated by Daniel Ross. Cambridge, MA: Polity, 2010. Pp. 154. $14.95 paper. Surveying the landscape of mid century industrial society, Theodor Adorno and Max Horkheimer ob served the strange role of variety in consumer and cultural goods. The techniques of mass production in the factories and studio system had, oddly enough, managed to produce not a surface of sameness, but a great diversity of things. On the one hand, however, the diver sity of goods that faced consumers was merely apparent, decipherable as false by "any child with a keen interest in variety." On the other hand, the variety of offerings on the market was functional and ef fective at securing the social order. "Something is provided for all," Adorno and Horkheimer gloom ily observed, "so that none may escape."1 If the Frankfurt school theorists could peer into contempo rary culture, they would observe a stunning intensification of variety, as well as a search engine-opti mized system for identifying and catering to niche desires that would make their imagined color-coded advertising maps seem quaint by comparison. The difference be tween the cultural consumption analyzed by Adorno and Hork heimer and today's practices is not the variety, which has only prolifer ated. Rather, it is the unidirectional character of being provided for. The subject of the industrial society is positioned as passive in this regard, whereas the consuming subject today is active and productive: the


This paper presents a rapid method to render dynamic water surfaces with penetrating obstacles in real-time. Taking the surface boundary into account, our method allows the rendering of single reflections and single refractions of objects even intersecting the water surface, including a physically approximative perspective refraction mapping. Thereby, water surfaces are represented as 2.5D height fields and obstacles as polygonal objects. In principle, we determine approximating virtual reflection and refraction eye coordinates. With respect to the water surface, the reflected and refracted objects and parts of objects are projected onto the surface from separate, virtual eye coordinates. Since we are using per-pixel reflection and refraction mapping, our multi-pass, image-based technique is suitable for GPU-based implementations. Moreover, we demonstrate the interactive application of the method for height field based data sets extracted from interactive 3D Smoothed Particle Hydrodynamics (SPH) simulations in real-time. Thereby, the presented approach achieves high frame rates and plausible results.


There are difficulties in this passage (in line 45 one might suggest readingpropius Eyyv-rEpW to be taken with what follows), but it is clear that the school boy first recited his passage of poetry from his seat and then stood up for a second recitation. Reddidi memoria (a&rE'SWKa ,uv'q) suggests that this was of the whole passage, but viroypfonr (of which subscriptio appears to be an unintelligent literal translation) can hardly mean anything but a sketch or outline of the passage. Whatever the exact procedure was, it appears that the grammar-school boy had to perform twice over, once seated and once standing, and if this was so, it seems not unlikely that something similar was done in the school of rhetoric. I have to confess that I am now considerably less confident about my previous interpretation of Juvenal's lines.


Transverse rumble strips (TRS) have been used by some agencies in rural areas to warn drivers that they are approaching a stop sign. There is some evidence in prior research that TRS are effective in reducing approach speeds. However, little is known about effects on crashes. Data from 20 intersections in Minnesota and 134 intersections in Iowa were used to examine the safety impact of TRS at three- and four-leg intersections with minor-leg stop control. Empirical Bayes methods were incorporated in a before–after analysis to determine the safety effectiveness of the rumble strips. Results from 3- and 4-leg intersections in the combined sample of Iowa and Minnesota indicate about a 21% reduction in fatal, incapacitating injury, and nonincapacitating injury crashes and a 39% reduction in fatal and incapacitating injury crashes. Coupled with this reduction in severe injury crashes, there seems to be an increase in property damage only crashes. A limited economic analysis indicated a reduction in crash harm of about $6,600 per intersection per year due to the installation of TRS. Due to limited sample sizes, no definitive conclusions could be made regarding the specific crash types investigated, that is, right-angle and ran-stop-sign crashes.


Yersinia pseudotuberculosis-associated abortion has been described in sheep, and the disease has been reproduced by intravenous injection of the bacterium.6 Experimental infection produced a purulent placentitis in most ewes and focal hepatic and myocardial necrosis in one newborn lamb. Y. pseudotuberculosis infection has been associated with bovine a b o r t i ~ n . l . ~ . ~ . ~ However, the disease has not been reproduced experimentally, and the pathological features have not been clearly defined. Here we characterize the gross and microscopic pathology of bovine abortions associated with Y. pseudotuberculosis. In late summer 1988, a 2-year-old cow aborted twin calves at 8 months gestation. One calf was born dead and was submitted to the laboratory along with the placenta and a maternal blood sample for examination (Case 1). The second, live calf failed to thrive and was killed by the farmer. Cultures of samples from Case 1 gave a heavy growth of Y. pseudotuberculosis serotype 111. Two further cases of Y. pseudotuberculosis-associated abortions were obtained from laboratory records. Case 2 was a fetus and maternal blood received in late winter 198 1. Case 3 was a placenta and maternal blood received in early winter 1983. These abortions had both occurred in late gestation. Cotyledon and fetal stomach content from Case 1, fetal stomach content from Case 2, and cotyledon from Case 3 were cultured on sheep blood Columbia agar and on MacConkey agar and incubated at 37 C in a mixture of 5% carbon dioxide in air for 40 hr. All samples gave a profuse growth of Y. pseudotuberculosis on both media, although cultures of cotyledon were heavily contaminated with bacteria of fecal or environmental origin. Tissue samples were also examined to exclude other causes of bovine a b ~ r t i o n , ~ but none were demonstrated. Suspect Yersinia sp. isolates were identified using API 20E biochemical test strips incubated in air at 37 C for 40 hr. The isolate from Case 1 was serotyped using specific antisera produced in rabbits,' while isolates from Cases 1 and 2 were discarded before serotyping could be done. Lung, liver, heart, brain, and placenta from Case 1, lung and liver from Case 2, and placenta from Case 3 were fixed in 10% buffered formalin, embedded in paraffin, and sectioned at 4 pm. All sections were stained with hematoxylin and eosin (HE), and sections of cotyledon were also impregnated by Gomori's methenamine silver method to exclude the presence of fungi. In both fetuses examined (Case 1 and 2) autolysis was minimal. In fetus 1 gross examination revealed excess yellow peritoneal and pleural fluid containing a few small tags of fibrin. The lungs were pale pink-grey and firm. In fetus 2 the lungs were pale pink-grey with reddening apparent around bronchioli, but no other gross changes were evident. The cotyledons of placenta 1 had slightly thickened yellow friable 181


Thus, from early theorists to the future of feminist therapy, the importance of listening to particular women in context is emphasized. Feminist therapy theory has been and remains vibrant because of continued listening. The diversity of women's voices in this work is substantial. The challenge that emerges is to foster harmony across differences. In the chapter on early theorists, Contratto and Rossier describe the disagreements among Williams, Greenspan, and Lerner regarding how much individual therapy can help women in our sexist society. Brown, Riepe, and Coffey's chapter on differences speaks to the conflicts that can arise as feminists consider new perspectives. For instance, they describe Adrienne Asch's work addressing the conflict between reproductive and disability rights, and note that some disability rights advocates view aborting fetuses with disabilities as a kind of "prenatal genocide" (p. 69). The energy of the debate is apparent, and strategies for maintaining unity are suggested. Each of the women in the chapter on multicultural feminist therapy adds a perspective to the discussion: Lillian Comas-Diaz in her work on colonization, Oliva Espin in her story of migration and culture shock, Beverly Greene in her story of developing critical consciousness, and Monica McGoldrick in her struggle as a White women to "stay conscious" (p. 55) of her privilege and difference. In her personal story, Jean Lau Chin speaks eloquently of her bicultural identity. She writes, "I have learned that to resolve conflict sometimes means not to seek integration, but to seek divergence" (p. 36). West also writes of feminist theory as a broad landscape, "holding many ideas and many truths" (p. 95). One striking feature of this work is the emphasis on society's responsibility to provide protection, nurturing, and justice. The traditional feminist principle of social change is richly illustrated. In Rachel Josefowitz Siegel's work on aging, she rejects the cultural blame and idealization of older women as nurturers and puts the responsibility for nurturing on society as a whole. Feminists working with refugees and victims of violence begin to turn their attention to the perpetrators who committed or allowed the violence. In the final set of chapters, the authors envision a future in which feminist therapy's goals have been met and society holds the values of feminist therapy. Society is envisioned as nurturing, violence is not tolerated, and nations take responsibility for their actions. Children are taught conflict resolution in schools, and therapists have paid sabbaticals and retreats for self-care, thinking, and writing. Adequate resources are available, and sexism, racism, and other forms of oppression are eradicated. The vision here is utopian and inspiring, and the authors provide strategies for moving in the direction of this vision, including making feminism more visible through the media and community involvement, creating spaces where feminist values are honored, and celebrating each contribution we make to the realization of a feminist future. Overall, the book accomplishes its purposes of remembering and envisioning. Although the chapters do not go into depth about each of the topics addressed, readers can take direction from the book and come away (as we did) with references to peruse. This book might be particularly useful in undergraduate and graduate courses where students can be encouraged to read further about a feminist theorist of interest. Although lacking in specific feminist interventions, the text covers key writings on therapeutic strategies and is excellent for therapists who want support for their feminist identity and work. As an overview of feminist therapy theory, the book is not as comprehensive as Enns's (2004) Feminist Theories and Feminist Psychotherapies. However, it includes readers in the feminist process, allowing us to meet foundational feminist therapists and allowing us to take our place in the future of feminism.


POST-OPERATIVE hoarseness (PH), sore throat (ST), and vocal cord injuries (VCI) are common complications after general anaesthesia. Methods for maintaining a patent airway during anaesthesia include the endotracheal tube (ETT) and the laryngeal mask airway (LMA). The LMA insertion is a blind technique, is easy to learn, and has a high first-time success rate. However, types of nerve injury, arytenoid dislocation, and epiglottitis have been described in association with the LMA, leading to PH and ST. The trauma causing laryngeal injury by the ETT can occur on several occasions: during induction of anaesthesia as a direct trauma of the tracheal tube, during surgery, or during tracheal extubation. Many factors contribute to laryngeal intubation trauma, and several risk factors have been identified, including gender, weight, smoking, and gastrooesophageal reflux. Technical factors are also important, such as ETT size, type of tube, cuff design, cuff pressure, use of introducer, use of gastric tube, type and duration of surgery, and intubating conditions. In this issue of Acta Anaesthesiologica Scandinavica, Abdi et al. present a study dealing with the problem of laryngeal morbidity, i.e. PH and ST after tracheal intubation vs. insertion of the new LMA (LMA Supremet). The LMA Supremet (LMASUP) with the possibility to suction the stomach could be an interesting alternative to the ETT during laparoscopic procedures. In terms of laryngeal morbidity, the LMA-SUP was associated with a decreased incidence of PH and ST compared with tracheal intubation (in women) after laparoscopic surgery. Moreover, the use of the LMA Supremet was as safe and efficient as the ETT in this special clinical setting, i.e. laparoscopic surgery. The sealing pressure, defined as the highest peak inspiratory pressure with no audible and measured gas leak, reached 30 cmH2O in 95% of the patients. In addition, in all patients in the LMA-SUP group, the drainage of the gastric contents was successful. The authors suggest that this feature associated with the LMA-SUP enhances safety during use of this new device in infertility laparoscopic surgery instead of the tracheal tube. A limitation of the study design might be the fact that only female patients were studied. Thus, the 'gold standard' for laparoscopic procedures is still the tracheal tube combined with a gastric tube. However, for women without an increased risk of regurgitation and a sealing pressure o30 cmH2O, it could be an alternative technique for elective pelvic laparoscopy. PH, commonly caused by the injury of the vocal cords during tracheal intubation, was significantly reduced in the LMA-SUP group compared with the ETT group. Therefore, it could be recommended especially for patients who use their voice professionally, such as singers, actors, or teachers. Another limitation is the fact that the laryngeal mask was inserted after administration of the muscle relaxant, which was required for the surgical procedure, and this is not the usual practice. Thus, the incidence of PH could have increased if the insertion of the LMA had been performed without a muscle relaxant. Based on these results, additional research could be conducted to determine the incidence of PH and safety of the LMA-SUP in patients receiving no neuromuscular blocking agent during surgery. If the results are the same, the LMA-SUP can be recommended for patients with a known contraindication to neuromuscular blocking agents as well.


Objective:To observe the effects of tonifying kidney methods on ET,MDA and CRP levels of patients with angina pectoris.Methods:100 cases with angina pectoris were randomly devided into two groups,50 cases were treated with Chinese herbs,the others were given western medicine.ET,MDA and CRP were determined before and after treated,meanwhile recording clinical symptoms,changes of ST-T in ECG,blood viscosity and lipid,etc Results:The levels of ET?MDA and CRP in patients with angina pectoris were significantly higher than normal,the levels were obviously lower in the group with tonifying kidney herbs than before treated and control group.The total effective rate was 94%,the effective rate of ECG improved was 70%,the time of ST-T change was shorter significantly in the treated group.There was obvious difference between Chinese herbs group and western group.Conclusion:Tonifying kidney methods could treat angina pectoris effectively,which may be related to the low of ET?MDA and CRP.


For the estimation and testing of contrasts in two-way layout, some optimum nonparametric procedures based on Chernoff-Savage [2] type of rank order statistics are considered here. The asymptotic properties of the proposed methods are studied and compared with those of the least square method.


Fully and effectively communicating with the litigant,adhering to the principles of fairness and justice,and the correct use of discretion of a judge in burden of proof distribution can ascertain the facts of a case and promote the judicial fairness.Based on factual trial judge,this article discusses how to adhere to fairness principles in different situations.According to different circumstances,how a judge should correctly use the discretion in the distribution of the burden of proof and other problems,such as in the absence of laws,regulations and judicial interpretations.A judge,in the use of discretion in the burden of proof distribution,should observe the principle of honesty and credit,open and transparent procedures,experience and practice,comprehensive balance.In case of a unequal status of two parties that may lead to a show fair circumstance,a judge needs to consider the specific case and distribute the burden of proof according to relevant principles.


This study was carried out to show the extent to which the land is productive due to the effect that climatic changes and the increase in population growth are the reasons that led to an increase in the demand for food, especially in developing countries. Therefore, a scientific way must assess the land suitability for growing crops. This research aimed to provide an integrated approach to the process of analyzing the suitability of agricultural lands for crop growth. Wheat in the Nile region of Babylon Governorate, was studied using the analytical hierarchy model (AHP) and compared with the parametric method and the actual crop in the field, as twelve soil criteria were determined (electrical conductivity, soil interaction, cation exchange capacity, exchangeable sodium ratio, soil texture, lime, gypsum, organic carbon, drainage, soil depth, slope, flooding) and three crite - ria were added in the AHP method due to their importance in Iraqi soils, which are (total nitrogen, availability phosphorus, crop variety). The results were extracted and showed that all the results of the study using the parametric method within the very unsuitable class for cultivation, N2, 72.5%, with an area of 37,734.07 hectares, and the unsuitable class, N1, 27.5%, with an area of 14,312.92 hectares, either by using the method. According to the analytical hierarchy process and giving varying importance to the soil criteria above, it was found that 37.5% are very suitable S1 with an area of 19517.62 hectares, 42.5% suitable for agriculture S2 with an area of 22119.97 hectares, and 20% moderately suitable S3 with an area of 10409.4 hectares. These results were similar to the agricultural reality of the regions under study.


The assumption of easy translatability between the different idioms of poetry and the visual arts and a focus on an established canon of poets has short-circuited sustained investigation into "Pre-Raphaelite" poetic style. This article considers work published since 2008 by way of three connected challenges facing critics keen to test the term "PreRaphaelite", which I explore under the headings of 'ambidexterity', 'brotherhood' and 'style'.


The author considers the problem of computing the coefficient matrix of the linear fractional map which parameterizes (modulo a permutation) both the family of plants and the set of robustly stabilizing controllers. The coefficient matrix can be obtained by performing a J-spectral factorization of a matrix formed from the nominal plant. A state-space realization of the coefficient matrix of the linear fractional map is derived.<<ETX>>


Due to the processing of unique data concerning the vehicle fleet of the Czech Republic and the national emission inventory, this paper examines the relevance of the benefits available for newer vehicles by means of the Czech road tax against the principle of internalization of road transport externalities. A serious finding is that the highest tax benefits are available for vehicles that generate the largest amount of CO2 and NOX emissions. The findings should serve as support for the adjustment of road tax reductions in the Czech Republic. Based on the similarities between the Czech and Slovak fleets and relevant legislation, the preferential treatment of taxation of newer vehicles applied in Slovakia can be assessed through a similar method. On a general level, the examination proved that the input data are suitable for the application of a fiscal instrument that accounts for emissions in road transport.


Control of infectious disease is predicated on the combined efforts of both innate and adaptive immune defenses including the generation of pathogen-specific CD8+effector T cells (CD8+TE). Upon resolution of inflammation and pathogen clearance, the CD8+TE population contracts and the preferential survivors mature into CD8+TM, which provide further protection against recurrent infection. In this context, the precise properties of CD8+TM populations emerge as a consequence of the unique conditions during initial T cell priming and thus make the generation of T cell memory contingent upon a variety of co-stimulatory and -inhibitory interactions. Here, we demonstrate a non-redundant role for complement, an innate immune defense pathway, in the development of CD8+T cell memory generated in response to an acute lymphocytic choriomeningitis virus (LCMV) infection. Mice deficient for the complement component 3 (C3) mount a relatively normal LCMV-specific CD8+T cell response, yet the subsequent development of CD8+T cell memory is compromised by impaired phenotypic, metabolic and functional CD8+TM maturation. Interestingly, the contraction phase is also impaired which results in an increased abundance of CD8+TM. Despite this observation, C3-deficient CD8+TM exhibit a decreased capacity to undergo in vivo secondary expansion when adoptively transferred into naïve hosts for rechallenge. We propose that C3, but no other individual complement component evaluated (C3aR, C5aR, and DAF/CD55), exerts a unique co-stimulatory function that generates a balanced formation of CD8+T cell memory and recall responses.


"The study was conducted in the laboratories of Faculty of Agriculture/University of Kufa for the period from 24/12/2017 to 24/2/2019 to isolate and diagnose fungi associated with imported bananas fruits (Musa spp.) in local markets. The study included five varieties of bananas for different origins to identify the ability of isolated fungi and their production for mycotoxins, including F. proliferatum. and evaluation of the effectiveness ultraviolet radiation uv-c with a wavelength of 254 nm, for 15 minutes and different concentrations of peppermint and aloevera extracts were evaluated their effectiveness in reducing of Fumonisin B1. The results showed the effect of UV-C and different concentrations of hot water extracts of peppermint and aloe vera to inhibit growth fungus F. proliferatum on PSA medium, a significant effect of peppermint extract,as it showed an inhibition of the growth fungus F. proliferatum. Concentration 1.5%, with amounted to 75.52% compared to control treatment, in which the percentage of inhibition was 0.00%. Ultraviolet light (UV-c) had a significant role in inhibiting the growth of the fungus. Inhibition which increasing the duration of the fungus exposure to ultraviolet (UV) radiation, as the duration of 15 minutes gave the highest rate of inhibition amounting to 81.35 % compared to control treatment of 0.00 %. The results also showed the high efficiency of ultraviolet radiation and peppermint extract at concentration of 1.5% in reducing toxicity of Fumonisin B1 and the protecting banana fruits from fungal infection, in addition to the possibility of prolonging the storage period."


Impact of water deficit in different growing stages on rice growth was disscussed based on the change of dry matter and yield of rice under water regulation and different nitrogen levels from pot experiments.The results showed that the yield of rice was not significantly decreased and dry matter accumulation was slightly increased with water deficit during later tillering stage compared to check treatment,but rice is easy to be restrained from water deficit during jointing-booting and head-flowering stages,especially under water deficit during heading-flowering,the yield and dry matter accumulation were significantly decreased compared to check treatment.Nitrogen level would regulate crop growth under water deficit.High level of nitrogen can improve water use efficiency,release the damage to rice under water deficit,and realize the effect of water-fertilizer mutual coordinated.


In this article, the ketalization of cyclohexanone and glycol was used as the probe reaction to characterize activities of various acid catalysts. On this basis, we came up with a method of using reaction rate to quantificationally characterize activity of catalyst. Based on the acticity of blank experiment , a conception of relative activity was raised.This method is simple and fast and can directly show different activities of different catalysts.


A study is made of the paths of tropical cyclones under the joint action of environmental flow and heating fields interms of a quasi-geostrophic barotropic model with the thermal forcing and dissipation terms involved,in which 16 ex-periments are designed and integrated for more than 7 model days.Results show that for different parameter values ofthe environmental flow and heating field,and the cyclone scale, such paths as counterclockwise looping, zigzag form andwestward march with an abrupt turning towards the north are reproduced clearly in the model atmosphere,exhibitingtheir critical points of nonlinear character.


Objective To investigate the expressions of Rho kinase(ROCK) and α-smooth muscle actin(SMA) in the rats with cognitive dysfunction due to chronic cerebral ischemia.Methods 54 healthy male Wistar rats were randomly divided into sham operation,model and fasudil groups,then subdivided into 3 subgroups according the 3,6,9 w of ischemia time,6 rats in each subgroup.Chronic cerebral ischemia animal models were established by 2VO.Learning and memory function were tested by Morris water maze,and ROCK2 and α-SMA expressions were measured by immunohistochemistry.Results The escape latency and swim distance of model and fasudil groups were longer than those of sham operation group(P0.05).Expressions of ROCK2 and α-SMA increased significantly in ischemia group since 3 w of ischemia,with intervention of fasudil,ROCK and α-SMA expression decreased and cognitive function improved significantly,having obvious difference from those of model group(P0.05).Conclusions Up-regulation and activation ROCK interfere with cognitive dysfunction due to chronic cerebral ischemia,fasudil has protective effect of neuron and can improve learning and memory function.


Mothers can transmit information to offspring via eggs or via placenta to prepare them for the environment they will experience, but evidence on maternal anticipatory effects is still mixed. Using an experimental approach, we found that gull mothers exposed to predators prior to egg laying had chicks with stronger antipredator responses than chicks of control mothers. Our results suggest that mothers may program offspring behavior via eggs.


The impact of the mobile technology trend is being felt in several sectors today, including education. In this paper, we present an analysis of the development of the mobile dimension in a Massive Open Online Course (MOOC) or a Small Private Online Course (SPOC) as a decision-making problem among various approaches which cannot be ordered incontestably from the best to the worst. This is due to the fact that the various approaches to integrate the mobile dimension are different and that each solution presents both advantages and shortcomings from a technological point of view. The decision must be made on the basis of the end-users' requirements and usage. We propose to view this situation as a multi-objective optimization problem as the decision is a compromise between several conflicting objectives/criteria. The various approaches to the development of mobile access to a MOOC/SPOC are presented first and then compared using various criteria. Then we provide an analysis of the alternatives to find the non-dominant Pareto solutions.


The article researches issues of Russia's accession to the World Trade Organization. The authors discuss consequences of Russia's joining the WTO basing on various factors and economic and social state of the country.


Abstract It was found a non-exponential time dependence of the complex dielectric constant after reducing hydrostatic pressure (p ≲ 1 GPa) at different ferroelectrics with diffuse phase transition. The results show the peculiarity that the dielectric relaxation becomes stronger after a critical time. It is suggested that this effect is connected with localized states responsible for the glasslike properties of these substances.


The operating system is the core of the smart power terminal. It is designed to strengthen security from five aspects: terminal container security, system security, security audit, communication protocol security, and hardware access control. By formulating a verification strategy, a comparative security test was carried out for the security hardening and non-security hardening operating systems of smart power terminals, and a detailed comparison test table was formed, demonstrating the importance of security hardening and security hardening for the operating systems of smart power terminals The advantages. The security-hardened operating system can effectively ensure the security of the operating environment of the terminal body and prevent illegal access by malicious programs.


Pioneering records of extracellular enzymes activities (EEA) in Lake Sevan waters highlight dependence of heterotrophic functioning on physicochemical characteristics and bacterial assemblage. Values of EEA, ranged 0.11-30.39 μg C/P L -1 h -1 , were higher in upper layers compared to the omission in deeper parts. Particles associated (ecto-) enzymes mainly predominated over free dissolved (exo-) enzymes. In June activities of all studied enzymes followed similar pattern, particularly, decreasing at thermocline and increasing twice/more in cold deeper waters. Regardless higher bacterial density and temperature in June, with no similar records up to now, EEA revealed reverse relationship to temperature and bacteria data and were significantly lesser than in March. Our finding might be suggested as temperature inverted impact to heterotrophic activities in eutrophic conditions. We assume that observed, with temperature raise, declined EEA was due to blocked enzymatic active center from colloids and DOM components interaction, which, in overall, may suppress organic substrate utilization and result in weakening of first and rate limiting step of biological self-purification in Lake Sevan waters. Therefore, since temperature is coregulator of assimilative/carrying capacity of aquatic ecosystems, climate warming might have unexpected negative feedbacks also through lowering assimilative capacities of water bodies, jeopardizing their quality and ecology.


Study on the Value Analysis and Development Countermeasure of Traditional National Sports under the Strategies of "Healthy China" Changjian He Junyi Li Yang lv Linfeng Chang Minzu University of China, Beijing, 100089, China Abstract The proposal of "Healthy China" strategy indicates that China puts people's health on the strategic position of priority development, and also provides a good opportunity and prospect for the development of Chinese traditional sports. In order to better promote the implementation of the strategy of healthy China and the development of China's national traditional sports, people should continue to explore the value of national traditional sports in healthy China. This paper adopts the method of literature and practice summary to analyze the value of traditional national sports in healthy China and the countermeasures of its development, and puts forward the targeted optimization measures.


Ice cream is a food that is loved by all people. Ice cream is a food product that contains milk fat and protein. In making ice cream, we still use synthetic dyes, even though there are many natural dyes around us, which have many benefits. So the purpose of this research is to substitute katuk leaf extract in making ice cream. The type of research used was a pure experiment (true experiment), using a Completely Randomized Design (CRD) with 3 repetitions. The data collection technique was carried out by giving questionnaires to limited panelists who were lecturers in Family Welfare with a concentration in Culinary Planning, Padang State University. Data were analyzed using Analysis of Variance (ANAVA), if Fcount > Ftable then proceed with Duncan's Test. The results showed that there was a significant effect on color quality with a value of 3.83 (X3). Overall the best quality analysis results were found in treatment X2, namely the addition of 25% katuk leaf extract


136Background: Integration of Palliative Care (PC) for patients with cancer is associated with improved symptom control, clearer understanding of prognosis, lower utilization of health care resources, and increased hospice use. Yet few studies identify which elements of a PC consultation are most associated with improved outcomes, particularly in the inpatient setting. This study describes the processes of a specialized, interdisciplinary, inpatient PC consultation service that utilized standardized referral criteria and demonstrated improved 30-day readmission, oncology service mortality, and hospice utilization. Methods: We implemented a 3-month intervention on the solid tumor oncology service requiring an automatic PC consultation for patients with one or more of the following criteria: stage IV disease, Stage III lung or pancreatic cancer, hospitalization within 30 days, > 7 day hospitalization, or uncontrolled symptoms. Descriptive statistics were used to identify specific processes associated with t...


Given an abelian $p$-group $G$ of rank $n$, we construct an action of the torus $\mathbb{T}^n$ on the stable module $\infty$-category of $G$-representations over a field of characteristic $p$. The homotopy fixed points are given by the $\infty$-category of module spectra over the Tate construction of the torus. The relationship thus obtained arises from a Galois extension in the sense of Rognes, with Galois group given by the torus. As one application, we give a homotopy-theoretic proof of Dade's classification of endotrivial modules for abelian $p$-groups. As another application, we give a slight variant of a key step in the Benson-Iyengar-Krause proof of the classification of localizing subcategories of the stable module category.


Global healthcare organizations are fundamental in addressing the healthcare needs of local and global communities. This highly regulated sector means it is under constant scrutiny for health, safety, and ethical compliance risks by federal regulatory bodies. Despite higher monitoring, an increasing number of healthcare companies receive fines for their irresponsible practices, manifesting significant questions about their corporate governance and sustainability practices. Against this backdrop, this study examines the relationship between boardroom diversity on the sustainability performance of companies operating in healthcare. Utilizing a global sample of publicly listed healthcare companies, using panel regression data and the system-GMM estimator accounting for endogeneity, we find evidence of a positive association between board diversity (gender and culture) and sustainability performance. These findings support critical mass theoretical expectations for board diversity and sustainability performance, suggesting that a meaningful representation (three or more) of women and ethnic directors on the board of healthcare organizations significantly improves sustainability performance. The findings remain robust in a series of robustness tests and continue to hold after accounting for potential endogeneity concerns. This paper has important implications for global healthcare organizational policy concerning diversity management practices and their implications for sustainability performance.


The Brazilian colonial period, seen from the perspective of microhistory presents a multifaceted scenario of people, languages and cultures that combine to produce our great Baroque. Anchieta's productions are analyzed here as plays that could – and still can – traduce a historical inventive that was violent, but also creative, artistic and innovative. The theatrical genre seems to have been unique in this historical moment, the genre which could best articulate the symbolic and linguistic impasses that were established between conqueror and conquered. The Feast of San Lorenzo , by Anchieta, is analyzed as a literary and theatrical manifestation that could better make the cultural translation. l


Dynamic resource scheduling is a critical activity to guarantee quality of service (QoS) in cloud computing. One challenging problem is how to predict future host utilization in real time. By predicting future host utilization, a cloud data center can place virtual machines to suitable hosts or migrate virtual machines in advance from overloaded or underloaded hosts to guarantee QoS or save energy. However, it is very difficult to accurately predict host utilization in a timely manner because host utilization varies very quickly and exhibits strong instability with many bursts. Although machine learning methods can accurately predict host utilization, it usually takes too much time to ensure rapid resource allocation and scheduling. In this paper, we propose a hybrid method, EEMD-RT-ARIMA, for short-term host utilization prediction based on ensemble empirical mode decomposition (EEMD), runs test (RT), and autoregressive integrated moving average (ARIMA). First, the EEMD method is used to decompose the nonstationary host utilization sequence into relatively stable intrinsic mode function (IMF) components and a residual component to improve prediction accuracy. Then, efficient IMF components are selected and then reconstructed into three new components to reduce the prediction time and error accumulation due to too many IMF components. Finally, the overall prediction results are obtained by superposing the prediction results of three new components, each of which is predicted by the ARIMA method. An experiment is conducted on real host utilization traces from a cloud platform. We compare our method with the ARIMA model and the EEMD-ARIMA method in terms of error, effectiveness, and time-cost analysis. The results show that our method is a cost-effective method and is more suitable for short-term host utilization prediction in cloud computing.


The author presents an appeal to those concerned with military communications to work together to put an end to fractionated military communication systems, and provide well-designed, integrated, flexible, and survivable (but less expensive) voice and data communications for the soldier and commander of the future. It is suggested that MILCOM start the process by forming a civilian/military/government communication planning, coordination, and consulting committee dedicated to focusing standards, specifications, research, development, and engineering on coordinated integrated communications for military use.<<ETX>>


Al(OH)3/polypropylene (PP) composites modified by polypropylene grafted with acrylic acid (FPP) were prepared by melt extrusion. Effect of PP grafting with acrylic acid on mechanical properties and fracture morphology of Al(OH)3/polypropylene composites were investigated. Although incorporation of Al(OH)3 reduced the mechanical properties of PP, addition of FPP increased the mechanical properties of Al(OH)3/PP composites. It is suggested that addition of FPP improve the dispersion of Al(OH)3 and the interfacial interaction between filler and matrix. Mechanical properties of Al(OH)3/FPP/PP composites depend on the grafting rate and the content of FPP. © 2001 John Wiley & Sons, Inc. J Appl Polym Sci 80: 2617–2623, 2001


A computation scheme for topology and size optimization of steel trusses with subdivided panels has been developed. The framework strength, stiffness and stability limitations have been taken into consideration. The search for effective solutions is carried out on the basis of a genetic algorithm. An example of using the approach for optimization of the plane lenticular girder-type truss with 72 m span is given. A topology variant of the additional rods system for the truss panels and values of rod cross-sections for the whole structure has been obtained.


"Three new volumes received by this Quarterly since the last issue was printed indicates a continuing interest in Alaska and the Northland."


In order to analyze performance qualities of a call center,a model of M/M/m+n/2K with classification and priority is established,and by matrix method,the exact analytical solution is obtained.Based on this,the relative performance indicators of call center can be achieved and quantitative analysis to relative performance is possible.


There is certainty and predictability for human existence and evolution,but there is also difference,uncertainty and unpredictability for them.Therefore,the educational world as the process of man's self-construction,shows both certainty and regularity,and at the same time uncertainty,complexity and situationality.For the latter,each individual is special,each educational situation is unique,each educational action is irreversible,and each educational theory is limited.Education is the process of trial,adventure,selection and creation.A good teacher should have an open mind,the courage of exploring continuously,the ability of grasping educational opportunities,and the wisdom of creation in a specific educational situation.


Abstract : The agglomeration of liquid alumina particles takes place in the convergent region and at the throat of the nozzle; it leads to an increase of performance losses related to the velocity and temperature differences between the condensed and gaseous phases. The problem is first schematized; then the fundamental equations of the problem are established that give the evolution of the distribution law of the particle population, and of the variables induced by the collisions.


The digital implementations of Sinusoidal Pulse Width Modulation (SPWM) generators have dominated over their counterparts based on analog circuits. In this paper, an FPGA-based SPWM generator is presented, which is capable to operate at switching frequencies up to 1 MHz (requiring FPGA operation at 100-160 MHz), thus it is capable to support the high switching frequency requirements of modern single-phase dc/ac power converters. The proposed design occupies a small fraction of a medium-sized FPGA and, thus, can be incorporated in larger designs. Additionally, it has a flexible architecture that can be tuned to a variety of single-phase dc/ac inverter applications. The post-layout simulation and experimental results confirm that compared to the past-proposed SPWM generation designs, the SPWM generator presented in this paper exhibits much faster switching frequency, lower power consumption, and higher accuracy of generating the desired SPWM waveform.


ABSTRACT Single-crystal alpha alumina (α-Al2O3) platelets were synthesised with aluminium sulphate in the study. Moreover, the effects of the heating temperature, holding time, and different power mixtures of γ-Al2O3 and sodium sulphate (Na2SO4) on the morphology of as-prepared α-Al2O3 platelets were explored. The crystalline phase evolution and morphology of the samples were characterised by X-ray diffraction and scanning electron microscopy. According to the further analysis results, most of α-Al2O3 platelets were hexagonal particles. After the power mixture of γ-Al2O3 and Na2SO4 (1:2) was heated at 1200°C for 1 h, the platelet size became relatively uniform with an average diameter of 3–5 μm and a thickness of 50–100 nm. This method is an easily controllable, simple, and green method to produce high-quality α-Al2O3 platelets.


In my thesis I focused on teachers and students in the first educational period and their relationship with nonverbal communication. The task includes theoretical and empirical part. In the theoretical part I explain the concept of communication and nonverbal communication, describe gender differences in nonverbal communication and comparison of social and cultural environment and nonverbal communication. Further on I explain different typologies of nonverbal communication and how to interpret nonverbal messages. Finally I describe nonverbal communication in the connection with teachers practice in the classroom.
In the practical part I used a questionnaire which was answered by primary school teachers. Research has shown that teachers and students in the first period of the primary education are aware of nonverbal communication and are using it consciously on everyday basis. They recognize the signs of nonverbal communication such as gestures, facial expressions, body posture and give them great importance. This means, that they observe and give them the correct response. Teachers acknowledge many differences in nonverbal communication of boys and girls and as well know the difference between verbal and nonverbal communication. They are aware that the communication is in more than 50% based on nonverbal communication and that nonverbal communication is largely present in all areas of teaching in the first period of primary education in elementary school.


This study is focused on the evolution of coastal erosion during the past two decades in the Yangtze River estuary,a complicated river mouth area.Based on the analyses of geological data obtained in the coast during 1980s using the GIS(Geography Information System) and DEM(Digital Elevation Model) methods,we made a preliminary study on the newest distribution pattern of coastal erosion and growth in the estuary.The results demonstrate that the north branch of the estuary is disappearing under erosion while the south branch is growing.In a selected typical erosional area,we studied the beach profiles in different times.In accordance with the shapes of profiles,they can be divided into different types such as smooth and straight coast,wide and steep coast,and sharp and steep coast.In accordance with the variation of profile features,they can be divided into types of parallel and retreating,from concave to convex upward,and from wide and steep to sharp and steep.


Eighteen strains, of thermophilic fungus Thermomyces lanuginosus were screened for amylolytic activities. All of them produced extracellular amylolytic enzymes. Three strains were selected for detailed studies on their production of glucoamylase and α-amylase. The optimum conditions for the assays of amylolytic activities were selected. The optimum parameters were found to be the following: 70 °C and pH 4.6 for glucoamylase and 70 °C and pH 5.0 for α-amylase.


An autonomous identification and planning system is proposed and a flight platform based on Linux embedded control system is developed for a quadrotor unmanned aerial vehicle (UAV) based on vision. In the process of control, through the Zenmuse X3 camera and the Open CV library for real-time image processing, to achieve the UAV target identification and localization. By improved genetic algorithm to plan a reasonable path for the UAV, make its complete the mission from the starting point to the end point. The ultrasonic data from the Guidance is acquired, and the UAV accurate position can be realized by the acquired near-ground height information. The proposed approach is verified by experiments. Introduction At present, intelligent products are gradually changing people's production and lifestyle. Quadrotor unmanned aerial vehicle with vertical take-off and landing and other characteristics. Its application areas become more and more widely [1]. Typical products are DJI, XIRO, 3D Robotics in civil field. One of the necessary conditions for UAV to stabilize flight control is to obtain the real-time motion state of the aircraft. Because the aircraft has the characteristics of flying in the air, limited load and high energy consumption, many methods of obtaining the state information of the traditional robot are not effective in some extent. In the most of works, laser range finder as an instrument for measuring the distance, it can detect the distance between the UAV and obstacles. It is more used in the UAV. But because of its limited accuracy, it is used in UAV indoor positioning and navigation [2]. In contrast, the machine vision is a more appropriate choice for the aircraft outdoor positioning flight. On the other hand, the camera is lighter than LIDAR and meets the load design requirements [3]. Xu-Chao CHEN uses the method of visual servo to study the hovering control of the UAV. Combining with the data of the inertial measurement unit, the aircraft dynamics model adopts the back-stepping method to design the controller to realize the hovering control of the aircraft [4]. Aiming at the autonomous flight control problem of unmanned aerial vehicles in the absence of GPS signal, Mei-Hui CAO designed a vision-based autonomous positioning and control method using improved SLAM algorithm, PID control and nonlinear controller [5]. Qiang LIU studied the problem of ground line structure in the indoor environment. The path recognition is accomplished by using the region of interest (ROI) of image, HSV color space threshold segmentation, Gaussian filtering and edge detection [6]. Bin DI considers the problem of allocating heterogeneous unmanned aerial vehicles to varied types of targets performing detection, attack and verification tasks. The model of the distributed task allocation for heterogeneous UAV is established. And the distributed auction algorithm using limited communications is developed to solve the task allocation problem optimally [7]. There are many researches on machine vision, path planning and PID control of aircraft. However, in the practical application of search, rescue, detection and transportation of UAV, image recognition, path planning and flight control are used integratedly to meet the functional requirements. In this paper, based on the Linux embedded control system architecture, image processing, object recognition and path planning are integrated on the Manifold computer, and the results are transferred to the UAV flight control system. This design avoids the dependence on the wireless data transmission link and eliminates the problems of system delay caused by wireless transmission. This paper designs an autonomous identification and planning system for quadrotor 700 Advances in Engineering Research (AER), volume 105 3rd Annual International Conference on Mechanics and Mechanical Engineering (MME 2016) Copyright © 2017, the Authors. Published by Atlantis Press. This is an open access article under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/). UAV based on vision, and builds the experimental platform of the aircraft. Combined with X3 camera and OpenCV library to complete the target object recognition and positioning. An improved genetic algorithm is used to efficiently complete the path planning problem of unmanned aerial vehicles. The precise flight control of the UAV from the starting point to the end point is realized by flight example. Target Identification and Location Technology Based on Vision Through the image processing operation can be completed in the field of view of the target object recognition, but the monocular camera model can't get the actual distance of the target object from the UAV. That is unable to complete the positioning of the target object. Therefore, in this paper, the UAV and ground height information acquired by Guidance vision navigation system and camera calibration are used to complete the target object location. Figure 1 shows the target identification, positioning process. X3 camera video stream


This study examined teachers' experiences of occupational stress in Finland and Estonia during the COVID-19 lockdown, and whether their stress would be related to their experiences of support from colleagues and leaders. The participants were total of 1,319 teachers that were teaching grades 1–6 in spring 2020. The data were analyzed using regression analyses with interaction terms. The results showed that the teachers in Finland and Estonia experienced stress during the lockdown, and that teachers' stress was higher in the Finnish sample than in the Estonian sample. The findings of this study suggest that support gained from colleagues or leaders seems to be important when aiming to reduce teachers' occupational stress in both countries.


1. Two techniques for estimating plasma aldosterone concentration are compared by means of repeated assays of a plasma pool and also by analysis of a wide range of plasma samples. 2. No significant difference was found in the results obtained by the methods. Radioimmunoassay required only one tenth of the volume of plasma needed for the double-isotope derivative method. 3. Its rapidity and relative inexpensiveness makes radioimmunoassay at present the most suitable technique for large-scale population screening.


A sensitive and rapid method for the detection of monoclonal antibodies secreted by hybridomas is described. Mouse myeloma cells are fused with spleen cells from immu- nized mice and directly cloned in soft agarose containing se- lective medium; hybrid clones can be seen after a week. Nitro- cellulose filters that have been coated with a specific protein antigen, with antigen-coupled erythrocyte ghosts, or with other cells used as antigens are then placed on the agarose surface. After incubation to allow immunoadsorption of any secreted antibodies specific for the filter-bound antigen, the filter is re- moved and overlaid with a suspension of antigen-coupled erythrocytes that react with the adsorbed antibodies; after un- bound erythrocytes are allowed to fall off the filter, red spots delineate the sites at which antibody-forming clones are present in the agarose. Alternatively, the filter may be treated with ra- diolabeled antigen followed by autoradiography. The reliability and sensitivity of the method are demonstrated with a-l-.3) specific antidextran myeloma J558, and the method's applica- bility is established by. detecting hybridomas with specificities for sheep erythrocytes and for a-(13) dextran.


Non-response is often occurred in survey sampling.Under uniform response,the regression imputation with incomplete auxiliary variable is studied,then the imputation estimate of population mean of interest variable and its Jackknife variance estimate are obtained.At last,the regression imputation is generalized to multiple auxiliary variables.


e23001Background: In angiogenesis, VEGF-A and its receptor VEGFR-2, and in lymphangiogenesis, VEGF-C and VEGFR-3, play central roles. An anti-tumor immunotherapy using an agonistic antibody (Ab) to...


This Development Viewpoint draws on a recently published book, Economic Liberalisation, Social Capital and Islamic Welfare Provision (Palgrave Macmillan 2009), which evaluates the impact of economic liberalisation on state-provided social welfare and the accompanying rise of Islamic faith-based welfare provision in the Middle East. The book is based on in-depth case studies of four countries: Egypt, Jordan, Morocco and Tunisia. See the related CDPR Development Viewpoint #17.


A Tre at ise on Bri gh t 's Dise ase an d Dia be te s , wi th Espec ia l Refe r en ce to Pat hol ogy an d Ther apeu ti cs . By Jame s Tyso n , M.D., Professor of Medicine in the University of Pennsylvania. Second edition, illustrated. Octavo, 381 pages. Including a section on the Ocular Changes in Bright's Disease and in Diabetes, by G. E. de Schweinitz, Philadelphia: P. Blakiston's Son & Company. 1904. (Price, $4.00.9


The thermal degradation of poly(di-itaconates) is discussed with special emphasis on the Influence of the nature of the ester substituent. It was established that the following reactions occur during the thermal degradation of these polymers: depolymerisatlon, de-estehfication, elimination, crosslinking, random main and/or side chain scission and carbonisation. Depolymerisation is the predominant degradation pathway and it may be initiated by end chain and random main and/or side chain scission.


Extra-contractual liability is an important institution recognized in the civil codes of many countries, including the French Republic and Vietnam. It is the obligation to repair the damage that one causes to a third party. Or, it can be defined as the obligation imposed on a person to repair damage suffered by another person. However, in certain cases which are provided for by law, the victim of the damage will not be compensated, for example: force majeure, the fault of the victim, the victim does not apply the necessary and reasonable measures to prevent and limit the damage, etc. This article presents and analyzes the provision relating to the obligation to limit the damages of the victim, within the extra contractual liability, which interests us, in the Vietnamese and French laws in a broad way, that is to say in s relying on the texts of laws, case law and doctrine. This is a new provision, it is derived from British law (the theory of mitigation of damages), and is recognized in the Civil Code of Vietnam since 2015. Meanwhile, in France, in addition to efforts lawyers in the recognition of this provision in French law in the program of legislative reform, this question still comes up against many contradictory points of view. Through this article, the author wishes to contribute to bringing multidimensional perspectives related to the obligation to limit the damages of the victim in extra contractual liability, and at the same time to propose some solutions concerning the types of damage for which the victim is obliged to limit, necessary and reasonable measures, the costs or damages incurred by the victim in order to minimize his damage in order to contribute to the improvement of Vietnam's legal regulations on this issue.


The current traditional fall behavior detection method constructs a fall detection model by pose annotation of the acquired images, which leads to low detection accuracy due to the lack of lightweight processing of the model. In this regard, indoor fall detection based on Yolov5 and openpose is proposed. The Yolov5 network structure is constructed and the path aggregation network is added on top of it. The skeletal joint points of human body are extracted using the openpose algorithm, and the fall behavior is determined based on the skeletal joint point information obtained in real time, and finally the model is lightened. In the experiment, the proposed model is verified for detection accuracy. The analysis of the experimental results shows that when the proposed model is used for indoor fall behavior detection, the MAP value of the model is high and has a high inspection accuracy.


The only fossil insects ro.m Antarctica tha't have been formally described are two beetles, Grahamelytron crofti Zeuner and A de-mosynoides antarctica Zeuner, both from a Jurassic deposit on Mount Flora, Hope Bay, Grahamland, at the northern tip of the Antarctic peninsula (Zeuner, 959). Since these are known by isolated elytra, their amily positions are obscure and conjectural at best.


Recollection of contextual information represents the core of human recognition memory. It has been associated with theta (4–8 Hz) power in electrophysiological recordings and, independently, with BOLD effects in a network including the hippocampus and frontal cortex. Although the notion of the hippocampus coordinating neocortical activity by synchronization in the theta range is common among theoretical models of recollection, direct evidence supporting this hypothesis is scarce. To address this apparent gap in our understanding of memory processes, we combined EEG and fMRI during a remember/know recognition task. We can show that recollection-specific theta-alpha (4–13 Hz) effects are correlated with increases in hippocampal connectivity with the PFC and, importantly, the striatum, areas that have been linked repeatedly to retrieval success. Together, our results provide compelling evidence that low-frequency oscillations in the theta and alpha range provide a mechanism to functionally bind the hippocampus, PFC, and striatum during successful recollection. SIGNIFICANCE STATEMENT Low-frequency oscillations are supposed to drive the binding of information across a large-scale network centered on the hippocampus, which supports mnemonic functions. The electrophysiological means to investigate this phenomenon in humans (EEG/MEG), however, are inherently limited by their spatial resolution and therefore do not allow a precise localization of the brain regions involved. By combining EEG with BOLD-derived estimates of hippocampal connectivity during recognition, we can identify the striatum and specific areas in the medial and lateral PFC as part of a circuit linked to low-frequency oscillations (4–13 Hz) that promotes hippocampus-dependent context retrieval. Therefore, the current study closes an apparent gap in our understanding of the network dynamics of memory retrieval.


The study of plasma instabilities is still a hot topic because of their consequences for the development of applications. [...]


A microscopic approach to breakup reactions into the low-energy continuum of Borromean two-neutron halo nuclei is developed, taking quantum-mechanically into account both Coulomb and nuclear dissociation, simultaneously. The crucial role of both elastic and inelastic fragmentation is demonstrated for ${}^{6}\mathrm{He}$ breakup on C and Pb targets at intermediate energies, for kinematically complete experiments. Recent GSI experimental data are for the first time analyzed quantitatively and reveal a rich and complex interplay of reaction mechanisms and low-lying halo excitations.


Objective: The objective of the study is to see the outcome of peritoneal dialysis in child age group ranging from 6 months to 15 yearsadmitted in ChattagramMaa- Shishu-O-General Hospital ICU setup. Methods: Patients were selected randomly who admitted with the indication of renal replacement therapy.Intermittent peritoneal dialysis was done in 10 patients from February 2012 to January 2013. Results: Out of ten patients eight survived and two died due to complication.The success rate is 80%.Among the survivors four made complete recovery with no complication and another fourwere sent to paediatric surgery for treatment of obstructive uropathy, the primary cause of the renal failure. Conclusion: The data presented indicate that peritoneal dialysis is an effective type of dialysis, that it is safe, that it can be accomplished with a minimum of equipment and that a trained team is essential for its efficient use. It is the preferable practical procedure currently available by which dialysis of an anuric infant or small child can be accomplished. Chattagram Maa-O-Shishu Hospital Medical College Journal Volume 12, Issue 3, September 2013: 34-36


The lightest neutralino in the minimal supersymmetric extension of the standard model can be, in principle, massless. If superlight neutralinos are the dark matter, structure formation constrains their mass to be above a few keV. I show that relaxing the assumption of radiation domination and entropy conservation prior to big bang nucleosynthesis, the relic abundance of very light neutralinos can be consistent with the inferred cold dark matter density. I study how one can hunt for light neutralino dark matter, with a mass at or below a GeV, focusing on both direct and indirect searches. I argue that the two most promising channels are spin-dependent direct detection and the search for monochromatic gamma rays from the prompt pair-annihilation of neutralinos into photons with GLAST. My study indicates that the lightest lightest neutralinos can be detected as long as their mass is above a few tenth of a GeV, a mass range where a future linear collider could provide important information on the details of the particle dark matter model.


The drift‐velocity dependence of the acoustic gain in n‐InSb at 77°K is derived from measurements of the rate of growth of the acoustoelectric field in the sample under constant‐current pulses of different amplitudes. The amplified acoustic flux monitored by the acoustoelectric field originates from the thermal‐equilibrium phonon distribution in the crystal. Results obtained for samples of different carrier concentrations are compared with the predictions of microscopic theories applicable to InSb (ql> 1). For low drift velocities the agreement between theory and experiment is very good. For drift velocities approaching the thermal velocity, on the other hand, the experimental data deviate markedly from the theoretical predictions. In this range appreciable carrier heating takes place, an effect that has not been adequately taken into account in the existing theories. The data also provide estimates for the nonelectronic (lattice) attenuation factor and for the initial thermal flux density. The values obt...


Light-emitting diodes operating in the 2.8–2.9 µm spectral region have been fabricated from InGaAs and InAsSbP p-n structures grown onto n- and heavily doped n+-InAs substrates. Owing to the high transparency of the n+-InAs and n-InGaAs buffer, the episide-down construction was successfully implemented for LEDs and photodiodes, and room temperature operation with output power and detectivity as high as 400 µW (I = 1A) and 1.5 × 1010cm Hz1/2/W} was correspondingly achieved. Operation of the LEDs and optically coupled LED-photodiode pairs was demonstrated in the 15–190°C temperature range.


The increasing application of routine examinations of all kinds is based on the fact that many serious illnesses do not produce clinical symptoms until late in their course. Any simple screening procedure increasing our case finding of malignant lesions is therefore valuable. Plain roentgenograms of the abdomen will give information about the presence of a mass lesion of the kidneys much more frequently than is generally appreciated. The observation that a renal mass was often an incidental finding in a department where many routine gallbladder and gastrointestinal studies were done drew attention to the value of a scout film of the abdomen for study of renal contours. For the full diagnostic harvest of a scout film, however, two conditions must be fulfilled: (a) The film must be properly exposed for upper abdominal density and (b) the radiologist must have formed the habit of carefully scrutinizing the renal contours in their entirety (including the medial aspect) and be aware of deviations from the norm...


The Paradigms in Physics Program at Oregon State University has totally reformed the entire upper-division curriculum for physics majors. This has involved both a rearrangement of content to better reflect the way professional physicists think about the field and also the use of a number of reform pedagogies which place responsibility for learning more firmly in the hands of the students. Along the way we are learning about what it takes to successfully design and implement large scale modifications in curriculum and to institutionalize and disseminate them. The particular emphasis will be on how are reforms have influenced how we teach about functions of several variables, especially the geometric scalar and vector fields of E & M and the non-geometric state variables in thermodynamics. I will share some of our joyful experiences and hard-learned lessons. Be prepared to participate! Wednesday, October 03, 2018 3:30 p.m. Bob Wright Centre Building Room A104


The essential step to proving the Fundamental Theorem of Algebra is to prove that A polynomial p(z) with degree n ≥ 1 has at least one complex root. Using that it has at least one complex root, say z1 . we now show that it has exactly n of them. Consider the polynomial p1(z) := p(z)/(z − z1). It has degree n − 1 so it too has at least one complex root, say z2 , which is also a root of p(z). Repeat this using p2(z) := p1(z)/(z − z2) which has degree n − 2. After n repe88titions we end up with p(z) having exactly n complex roots.


A model of the process of aerobic fermentation in a tower fermenter devided in sections was established and examined by experiments.

In this part data for the concentration of biomass, substrate and oxygen in the sections of the bioreactor at countercurrent moving of the phases were characterized.


To interpret sex ratio variation in the sub-dioecious species Urtica dioica, a series of experimental crosses was conducted to analyse the genetic basis of sex determination. At our study site, populations of this wind-pollinated perennial consist of low proportions of monoecious individuals (inconstant males) beside male and female plants. In U. dioica, a single locus appears to have a major effect on sex determination. Our data suggest that, in dioecious plants, males represent the heterogametic sex, with maleness dominant over femaleness. Monoecious plants were found as being heterogametic, however in this sex type, maleness appears to be co-dominant to femaleness. Self-pollination of monoecious plants generally resulted in 1:3 female:male plus monoecious offspring. When crossed with monoecious plants, females produced mostly one sex type (females) whereas crosses between monoecious plants and males mostly yielded two sex types (females and males). Full-sib crosses among progeny obtained after self-pollination showed that the bisexual trait generally was inherited following Mendelian rules. The bisexual trait was transmitted via both pollen and seeds. However, crosses among dioecious plants and individuals that were obtained after self-pollination of a monoecious plant led to unexpected alterations in sex determination in the new arisen genotypes. Here, multiple alleles seem to interact in several different ways, resulting in variations in the type of dominance and different phenotypic effects (e.g., heterozygous females). We discuss the importance of the genetic sex determination mechanism to explain the sex ratio variation observed in crosses between female and male plants. Unpublished manuscript


This paper discusses how environmental improvements in EOR technology continues to advance. Successful EOR requires the injection of a fluid which produces incremental oil for the least overall cost. When the net volumetric costs of EOR injection fluids are compared at reservoir conditions, it is clear that only a few liquids or compressed gases can be used to displace crude oil on a barrel for barrel basis. Although high-concentration surfactants have the potential for very efficient displacements, reservoir heterogeneity increases the economic uncertainty of the process, especially at today's oil prices. Water is always the cheapest fluid to inject, even with small amounts of polymer added, and polymer flooding can be cost- effective for new waterfloods. However, polymer flooding is not efficient for displacing tertiary oil. Water converted to steam still accounts for most of the EOR production in the U.S.A., but low oil prices and stricter environmental regulations now restrain large expansions and new projects. Cogeneration of steam and electricity improves the economics markedly for thermal EOR projects, and gas-fired boilers reduce the emissions to the atmosphere. By firing the cogeneration boilers with coal or gas, the more plentiful fossil fuels are converted into much-needed liquid fuels efficiently andmore » economically.« less


Let be a nonhomogeneous metric measure space. In this paper, the boundedness for commutators generated by bilinear -type Calderon-Zygmund operators and functions on is obtained.


Introduction: Treatment of large or giant cerebral aneurysms with broad neck is extremely difficult or carries high risks, even with clinical available surgical method or endovascular one using coils with the assistance of bare stents. We are developing microporous covered stents (Goodman, Japan) for the treatment of intracranial aneurysms. In this study, as a preclinical study, their performances were evaluated in three different in vivo animal models under reliability assurance system (RAS). Methods and Results: The covered stents were prepared using specially designed flexible balloon-expandable stents (CoCr; diameter; 3.5~5.0 mm, length; 16~28 mm) by dip-coating to cover their strut completely with polyurethane membrane (thickness; 20 μm) followed by laser-based microprocessing (pore size; 100 μm, opening ratio; ~30%). All animal experiments were performed under RAS. 1) In canine curved vessel model (5 mm in diameter), all stents mounted on the derivery catheter could smoothly pass the tortuous vessel with little arterial damage (n=10). 2) In canine sidewall aneurysm model, all post-immediate run showed disappearance of the aneurysm (over 7 mm in size, 4 mm in wide), and histological examination at 3 months revealed complete endothelialization at the aneurysmal neck and entirely organized aneurysm (n=20). 3) In rabbit aortic model (3 mm in diameter), just after placing a single stent lumbar arteries (less than 1 mm) were patent with good run-off. Even after placing the second stent in an overlapped fashion lumbar arteries are still patent. After 3 months, both the parent artery and branching lumbar arteries are patent in all cases (n=15). The safety of the covering material was guaranteed at over 2 years (n=10). Conclusions: Excellent embolization performance was confirmed in all cases even at the large and wide-necked aneurysms on the tortuous vessels with high reliability. Based on the obtained perfect preclinical results we are planning the first in human study of the covered stents for intracranial aneurysms in 2015.


Incorporating the History of Mathematics in everyday teaching can be much more than just giving anecdotic events a place in our classroom expositions. In fact, there are ideas and methods used in the past which may be no longer of practical usefulness today, but may nevertheless help our students to grasp the meaning of a theory, an algorithm or a simple formula. Just as, for Elementary School children, manipulating pebbles is a useful way of visualizing some properties of the basic operations, like commutativity, for example, also working at the High School level with Euclide's " Geometric Algebra" or the egipcians' " False position rule" may be of great help for understanding relations and concepts more clearly. In fact, the possibility of realizing that concepts and ideas in different topics of Mathematics are connected is one of the most important benefits for the student exposed to the historic development of some mathematical ideas. On the other hand, the teaching of Mathematics as a field of knowledge which is ever changing, instead of as a rigid set of formulas and algorithms, is, besides a tribute to truth, a way of encouraging our students to interact with the ideas developed in the classroom, since they will necessarily be exposed to several different ways of solving problems, and therefore their creativity will be stimulated. After a 4year experience in Mérida, Venezuela working with High School teachers who introduced their students to Algebra and Geometry using the approach mentioned above, there have been positive results, especially in their general attitude towards learning Science. Some examples of the use of certain elements of the History of Mathematics in the exposition of basic topics in Algebra and Geometry of the High School level will be shown.


In view of recent writings indicating the possibility of disturbed chloride metabolism in eczema, it was decided to investigate the chloride content of the whole blood in cases included in this group and also in certain other diseases of the skin. REVIEW OF LITERATURE Herrick, 1 in 1924, showed that there is an inverse relationship between the concentration of dextrose and chlorides in the blood after the ingestion of 100 Gm. of dextrose, and suggested that the chlorides possess the property of shifting to other tissues from the blood in order to preserve the optimal osmotic conditions of the blood. Barney, 2 in 1926, made chemical analyses of the sweat in eczema and demonstrated that in these cases there is a diminution in the output of chlorides in the sweat. He concluded that the salts may play an etiologic role in the production of the eczematous condition. In the same


This work deals with the structure of TV channels that are distributed from satellite positions where DTH platforms offer their services in European countries. The structure is being considered via service availability (FTA and PAY TV), resolution (SDTV, HDTV and UHDTV), standards of broadcasting (DVB-S and DVB-S2), satellites and satellite positions, as well as market share of leading satellite operators at European market through which DTH providers do their services to the ultimate users. We also represent the market of TV channel distribution through the number of household which use cable, satellite, terrestrial and IPTV. Collected data are represented as a table and graph for the period from 1996 to 2020.


MM-wave subsystems have traditionally been produced in low volumes and at high cost due to circuit and substrate costs and limited repeatability of module manufacture. Advances in MMIC processing, packaging technologies and modelling techniques are potentially enabling mm-wave modules to be procured at reasonable cost. This paper summarises packaging and MMIC designs at QinetiQ above 60 GHz aimed at using low cost manufacturing techniques. By way of example two applications are considered; a mm-wave radio link at around 60 GHz and a 94 GHz receiver for imaging applications.


The main aim of this paper is to examine the issues raised by foreign investment in a developed but dependent capitalist economy. The case of Australia is chosen. However, many of the issues raised would appear to apply to other similar countries. Section 2 is a selective survey of the orthodox position on the issue. Sections 3 and 4 assess in more detail the proposition that foreign investment alleviates the savings and balance-of-payments constraints respectively. Section 5 rounds off the paper with some further observations. In the remainder of this section we attempt to "set the stage," as it were. These issues have always been of particular concern to Australia. However, they are now becoming increasingly important, with worldwide interest being focused on Australian resource(and especially energy-) based projects. The enormity of some of the planned projects1 and the importance of energy, in Australia as