835 research outputs found

    Pinned Low Energy Electronic Excitation in Metal Exchanged Vanadium Oxide Nanoscrolls

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    We measured the optical properties of mixed valent vanadium oxide nanoscrolls and their metal exchanged derivatives in order to investigate the charge dynamics in these compounds. In contrast to the prediction of a metallic state for the metal exchanged derivatives within a rigid band model, we find that the injected charges in Mn2+^{2+} exchanged vanadium oxide nanoscrolls are pinned. A low-energy electronic excitation associated with the pinned carriers appears in the far infrared and persists at low temperature, suggesting that the nanoscrolls are weak metals in their bulk form, dominated by inhomogeneous charge disproportionation and Madelung energy effects.Comment: 4 figure

    The problem of genesis and systematic of sedimentary units of hydrocarbon reservoirs

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    The problem of identifying and ranking sedimentation, facies associations and their constituent parts - lithogenetic types of sedimentary rocks was considered. As a basis for paleo-sedimentary modelling, the author has developed a classification for terrigenous natural reservoirs,that for the first time links separate sedimentological units into a single hierarchical system. Hierarchy ranking levels are based on a compilation of global knowledge and experience in sediment geology, sedimentological study and systematization, and data from deep-well coresrepresentingJurassichydrocarbon-bearing formationsof the southeastern margin of the Western Siberian sedimentary basin

    Assessment of the diversity of vascular plants in phytocenoses with a share of Quercus mongolica on the territory of Relic Oaks State Reserve

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    In this paper, we assess the diversity of vascular plants in phytocenoses with Quercus mongolica (family Fagaceae) on the territory of the Relic Oaks State Reserve (Eastern Siberia, Transbaikal region), where Q. mongolica is located at the northwestern boundary of the areal. The descriptions of phytocenoses have been processed in the PAST3 application. The similarity of species composition has been determined using the Jaccard index. The resulting tree diagram shows two groups of descriptions at a similarity level of 0.14-0.15. The first group includes the descriptions of mixed forest quadrats, in which Q. mongolica is a co-edificator. The second group of descriptions presents the communities where Q. mongolica is the only species in the tree layer. The analysis of the tree diagram shows the dependence of species richness within the phytocenoses on the surface patterns and edaphoclimatic conditions. The phytocenoses located on steep southern slopes show less diversity

    Model of methods of forming biological picture of the world of secondary school pupils

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    Introduction: the problem of development of a model of methods of forming the biological picture of the world of pupils as a multicomponent and integrative expression of the complete educational process is considered in the article. It is stated that the results of the study have theoretical and practical importance for effective subject preparation of senior pupils based on acquiring of systematic and generalized knowledge about wildlife. The correspondence of the main idea of the article to the scientific profile of the journal "Integration of Education" determines the choice of the periodical for publication. Materials and methods: the results of the analysis of materials on modeling of the educational process, on specific models of the formation of a complete comprehension of the scientific picture of the world and its biological component make it possible to suggest a lack of elaboration of the aspect of pedagogical research under study. Therefore, the search for methods to overcome these gaps and to substantiate a particular model, relevant for its practical application by a teacher, is important. The study was based on the use of methods of theoretical level, including the analysis of pedagogical and methodological literature, modeling and generalized expression of the model of forming the biological picture of the world of secondary school senior pupils, which were of higher priority. Results: the use of models of organization of subject preparation of secondary school pupils takes a priority position, as they help to achieve the desired results of training, education and development. The model of methods of forming a biological picture of the world is represented as a theoretical construct in the unity of objective, substantive, procedural, diagnostic and effective blocks. Discussion and conclusions: in a generalized form the article expresses the model of methods of forming the biological picture of the world of secondary school pupils and gives a teacher the opportunity to use it in practice of subject preparation of pupils.Peer reviewe

    Regional Aspects of Nosocomial Infection As a Medical and Social Problem

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    Prevention of nosocomial infection (NI) is an important medical and socioeconomic problem. And though certain organizational and practical measures are implemented in Russia every year to reduce NIs, the problem is still relevant from medical and social points of view. The risk of infection are both for patients and medical workers. In Russia, the minimum economic damage caused by NIs is 2.5–5 billion rubles annually. According to the Office of the Federal Service for Supervision of Consumer Rights Protection and Human Welfare in the Republic of Mordovia, the total incidence of NI in the region is at a low level. The incidence rate was 0.01 per 1000 patients in hospitals. The dynamics of the last five years demonstrates a decrease in hospital-acquired infections. In the dynamics of the last five years, incidence rates of purulent-septic infections of newborns and postpartum women, postoperative purulent-septic complications and post-injection complications had an unstable downward trend. Thus, purulent-septic infections of newborns and postpartum women and postoperative infections are dominated in the structure of nosocomial infections. Analysis of dynamics of morbidity in recent years in the Republic of Mordovia suggests that the measures taken to prevent NI are quite effective and are manifested with consistently low rates

    Influence of the biologically active dietary supplement Floravit® on the skin and hair structure in sable (Martes zibellina)

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    It is important to search for new highly effective multicomponent compounds that are able to influence several of animals’ homeostasis systems simultaneously to improve the physiological adaptation of fur animals to different conditions of nutrition. This is the function of the feed additive Floravit® – a natural bioregulator. The compound is a combination of biologically active ingredients produced by the mycelial fungus Fusarium sambucinum. Studied was the effect of Floravit® on the structure of the skin and hair in adult female sable (Martes zibellina). The scientific and economic experiment was conducted at the JSC “Plemzavod Pushkinskyi” in the Moscow Region during the period of winter fur formation in October-November. The study of the morphological structure of the hair and skin cover was carried out in the chine, side and rump topographical areas. The structure of the guard hairs in the main topographical areas was examined on a scanning electron microscope. The experiment showed that administration of Floravit® per os to adult female sable at a dose of 1.0 ml per head per day throughout the period of winter pelt formation in October-November has an influence on the morphological structure of all the categories of hair on all topographic pelt areas. Animals in the test group exposed to Floravit® exhibited an increase in guide hair length on the chine and side, when compared to controls, by 4.1 mm (p < 0.001) and by 2.8 mm (p < 0.01), respectively. The length of guard hair on the chine, side and rump increased by 8.1, 7.8 and 7.8 mm (p < 0.001), respectively. An increase in down hair length was recorded in all areas of the pelt, when compared to controls, by 13.0, 4.5 and 6.3 mm (p < 0.001). An increase in dermal thickness was recorded in the chine area by 0.7 mm (p < 0.001). The specified changed in the skin and hair structure in sable adult females after using Floravit® have shown a positive influence on the quality of hair cover. As a result, bioregulator Floravit® takes part in the adaptation process of the sable organism to external factors

    Transfer of trace metals by trophic chain of plankton - filter-feeding bivalves in the brackish-water lagoon lakes on the Japan Sea coast

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    Content of the metals Fe, Mn, Ni, Pb, Zn, Cd, and Cu was determined in the water, suspended matter, plankton organisms and bivalves collected in the brackish-water lagoon lakes on the coast of the Japan Sea in July 2011-2012, August 2013, and July 2014. The lakes are located in the sparsely populated area of eastern Sikhote-Alin including the Sikhote-Alin biosphere nature reserve. The content of Fe, Mn, Ni, and Pb has a tendency to decrease along the trophic chain that is conditioned by prevalence of their suspended forms over dissolved ones in the water and decreasing of the surface : weight ratio with size of living organisms. On the contrary, the content of Cu, Zn and Cd is rather stable along the food chain because of prevalence of their dissolved forms and low content in the suspended organic matter

    Local immunity in women with CMV infection of the urogenital tract

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    The number of sexually active women with chronic pelvic inflammatory disease, surveys which scrapes the cervix, cervical, endometrial revealed cytomegalic cells. Objective: to study the local immunity in CMV infection of the urogenital tract in women to optimize therapy. Material and Methods: 356 women of reproductive age CMV infection of the urogenital tract. To solve this purpose the study was conducted in laboratory parameters, determine the spectrum of STI lymphocyte subpopulations , and phagocytic activity of neutrophils. Results: The identified characteristic clinical features of the various forms of the course of CMV infection of the urogenital tract abnormalities in the immune indicators led the appointment of combined therapy using drug Panavir. The treatment helped the transition reaktivrovannoy CMVI in latent for normalization of immunity.Увеличилось количество сексуально активных женщин с хроническими ВЗОМТ, при обследовании которых в соскобах шейки матки, цервикального канала, эндометрии выявлялись цитомегалические клетки. Цель исследования: изучение локального иммунитета при ЦМВИ урогенитального тракта у женщин для оптимизации терапии. Материал и методы: 356 женщин репродуктивного возраста ЦМВИ урогенитального тракта. Для решения поставленной цели проводилось изучение лабораторных показателей, определяющих спектр возбудителей ИППП, субпопуляционного состава лимфоцитов, фагоцитарной активности нейтрофилов и. Результаты исследования: выявленные характерные клинические особенности различных форм течения ЦМВИ урогенитального тракта, отклонения в иммунных показателях обусловили назначение комплексной терапии с использованием препарата Панавир. Проведённое лечение способствовало переходу реактиврованной формы ЦМВИ в латентное течение с нормализацией иммунитета
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