To the issue of the use of sodium-lithium countertransport rate in red cell membrane as a prognostic marker of artherial hypertension mordbidity and mortality: an experience of 25-year follow up cohort study

Aim. The article discusses the results of a long-term cohort study devoted to the search for the possible relationship of arterial hypertension morbidity and mortality with the rate of sodium-lithium countertransport (Na+-Li+-СT) in red cell membrane which is a marker of the structural and functional state of the cell membrane. Methods. The study of the functional state of cell membranes by determining the maximal rate of Na+-Li+-CT in red cell membrane with quintiles analysis of the rate of Na+-Li+-CT. Screening clinical examination, including registration of blood pressure (BP), ECG study, the study of eyeground vessels, one- and two-dimensional echocardiography (EchoCG), the study of the lipid spectrum of the blood. Analysis of medical records. Results. Based on the results of long-term follow up of the aging cohort total mortality is not associated with Na+-Li+-СT rate in red cell membrane. At the average age of 50 bimodality is detected in the development of new cases of primary arterial hypertension associated with the values of Na+-Li+-СT rate of the 1st quartile (36-206 micromoles of Li per liter of cells per hour) and 3d quartile (276-347 micromoles of Li per liter of cells per hour). At the average age of cohort of 55.6±6.7 years the distribution of patients with arterial hypertension by quartiles of Na+-Li+-СT rate becomes almost identical with the statistically non-significant prevalence of 4th quartile of Na+-Li+-СT rate. Conclusion. The expected correlation between mortality among persons with hypertension and membrane disorders determined by the high rate of Na+-Li+-СT was not revealed. However, the tendency to the predominance of mortality at high Na+-Li+-СT rate suggests that with a much larger sample size a significant relationship may be confirmed. The necessity of studying the relationship between mortality from arterial hypertension and high rate of Na+-Li+-СT in female cohorts remains actual. Increasing difference of mortality rate among patients with and without arterial hypertension with high rate of Na+-Li+-СT can indicate the relationship between mortality from arterial hypertension and membrane disorders

Study of Organic Self-Assembled Nanosystems by Means of High-Frequency ESR/ENDOR: The Case of Oil Asphaltenes

© 2018, Pleiades Publishing, Ltd. An approach to investigate self-assembly of oil disperse systems based on high-field electron nuclear double resonance has been suggested. As exemplified by asphaltenes, the oil components most prone to self-assembly, the formation of planar rather than multilayer structures has been directly evidenced experimentally. The suggested method can be applied to elucidate the self-assembly mechanism in wide range of organic objects

Distribution of Paraffin Hydrocarbons and Asphaltenes in Acidic Water-Oil Emulsion

© 2018, Pleiades Publishing, Ltd. Abstract: Asphaltenes and solid paraffins isolated from various layers of acidic water-oil emulsions obtained by mixing an oilfield emulsion with 15% solutions of hydrochloric and sulfamic acids with or without addition of Fe(III) have been studied by elemental analysis, IR and EPR spectroscopy, gas–liquid chromatography, and calorimetry. In acidic water-oil emulsions, the high-molecular-weight petroleum components have not been found to concentrate at the oil/water interface; however, a change in their composition has been revealed, which is more pronounced in the presence of Fe(III). The formation of diamagnetic complexes of the paramagnetic centers of asphaltenes with Fe(III) has been detected

Modern requirements to the content selection of teaching physics and mathematics, aimed at the development of design and technical competence of technical university students

© The authors. The research's relevance of the defined in the article problem is due to the fact that when the study of physical-mathematical disciplines the consolidation of the acquired knowledge occurs and the development of skills contribute to their using in manufacture problems' solving in the professional activities of the engineer. In this regard, this article is aimed at the development of modern requirements to the content selection of teaching physics and mathematics, aimed at the development of design and technical competence of technical University students. In the study of this problem the modular competency approach is set out, which allows on the base of the required competencies of future technical specialists to identify the following basic requirements for the selection of the content of teaching physics and mathematics: the disciplines' integrity and fundamentality, systematic and consistent presentation of educational material, problematic and innovativeness of their content, their interdisciplinary, professional orientation, orientation on the formation of logical thinking of students. The article can be useful in selecting and structuring the content of teaching physics and mathematics courses in high school, as well as in the future teachers' training of these disciplines

Toward the Asphaltene Structure by Electron Paramagnetic Resonance Relaxation Studies at High Fields (3.4 T)

© 2016 American Chemical Society.A series of 12 asphaltene samples extracted from heavy oils and the oxidized bitumen of different origin has been studied with high-frequency W-band (94 GHz) pulsed electron paramagnetic resonance (EPR) spectroscopy. Transverse (T2e) and longitudinal (T1e) relaxation times of the free radical (FR) and the vanadyl porphyrin (VO2+) were measured for each sample. A significant contribution of the spectral diffusion to T2e has been revealed and ascribed to the dipole-dipole interaction between the FR and VO2+. This indicates that the distance between the FR and VO2+ does not exceed a few nanometers, which means, in turn, that VO2+ can participate in construction of the asphaltene aggregates via the intermolecular interactions

Многоязычие и идентичность на визуальном пространстве: языковой ландшафт на городской периферии

This study is devoted to the analysis of the linguistic landscape in the periphery of Ufa, the capital of the Republic of Bashkortostan, Russia. Periphery, in this paper, stands for three settlements bordering Ufa. Specifically, we address the connection between the region’s multilingualism and identity to discover if the periphery complies with the regional language policy and how this translates to the local identity. Procedure-wise, we collect the samples of the local linguistic landscape to see what languages are used and what functions they perform. The interpretation of the collected material allows making an inference about the language situation in the periphery and linking it to the local identity. The analysis demonstrates a weak connection between the landscape and regional multiethnicity: smaller businesses and private individuals tend to ignore the local language policy, while state institutions and larger enterprises meet the bare minimum of the requirements. Therefore, it can be concluded that the local authorities use an identity tactic named “adequation” aimed at highlighting the interethnic similarities and neglecting the differences. Such practice may have an adverse long-term effect resulting in social instabilityНастоящее исследование посвящено анализу языкового ландшафта на периферии г. Уфа, столицы Республики Башкортостан. В данной работе периферия включает в себя три населенных пункта в непосредственной близости к Уфе. Авторы исследуют связь между региональным многоязычием и идентичностью, что позволяет ответить на вопрос, насколько соблюдается языковая политика региона и каким образом это связано с местной идентичностью. Анализ показал, что связь между многоязычием и идентичностью слабая: малые предприятия и частные лица часто игнорируют языковую политику, в то время как крупный бизнес и государственные предприятия выдерживают лишь необходимый минимум требований языковой политики. Таким образом, можно заключить, что местными властями используется тактика «адеквации», которая подразумевает уравнивание всех этносов и нивелирование различий между ними. Данная практика может иметь отрицательные долгосрочные последстви

Study of the relationship between mental tension and risk factors for developing cardiovascular diseases

conducted a study of the influence of mental stress on risk factors for developing cardiovascular diseases, which revealed a statistically significant tendency to worsen blood pressure, heart rate and blood glucose levels after 3-hour fasting with an increase in the level of mental stress in 3rd-year students. The largest part of the subjects with high levels of stress had a bad habit – Smoking.провели исследование влияния психической напряжённости на факторы риска развития сердечно-сосудистых заболеваний, которое выявило статистически достоверную тенденцию к ухудшению показателей артериального давления, частоты сердечных сокращений и уровня глюкозы в крови после 3-часового голодания при увеличении уровня психической напряженности у студентов 3 курса. Наибольшая часть обследуемых с высоким уровнем стресса имели вредную привычку – курение

The role of production costs in the management of poultry sector of the region

© 2015, Asian Social Science. All rights reserved. The article analyzes the economic characteristics of poultry sector development on the example of large poultry farms in Tatarstan Republic. Special attention is paid to the role of production costs in poultry sector in increasing the efficiency of production-financial functioning of economic subjects. The authors prove that to compare the costs dynamics, the relative indicators should be cast to each 100 sq.m. of a farm, i.e. the conditions should be typified in order to analyze the structure, trends and development prospects of the farms’ production-financial functioning. Conclusions are formulated, that the efficient management of production-financial functioning costs and structure will allow to achieve the increased efficiency of production-financial functioning of poultry farms. The crucial significance is attributed to innovative management, budget financing, special programs financing, and various forms of state-private partnership, which would increase the investment attraction of poultry sector

The role of production costs in the management of poultry sector of the region

© 2015, Asian Social Science. All rights reserved. The article analyzes the economic characteristics of poultry sector development on the example of large poultry farms in Tatarstan Republic. Special attention is paid to the role of production costs in poultry sector in increasing the efficiency of production-financial functioning of economic subjects. The authors prove that to compare the costs dynamics, the relative indicators should be cast to each 100 sq.m. of a farm, i.e. the conditions should be typified in order to analyze the structure, trends and development prospects of the farms’ production-financial functioning. Conclusions are formulated, that the efficient management of production-financial functioning costs and structure will allow to achieve the increased efficiency of production-financial functioning of poultry farms. The crucial significance is attributed to innovative management, budget financing, special programs financing, and various forms of state-private partnership, which would increase the investment attraction of poultry sector

The role of production costs in the management of poultry sector of the region

© 2015, Asian Social Science. All rights reserved. The article analyzes the economic characteristics of poultry sector development on the example of large poultry farms in Tatarstan Republic. Special attention is paid to the role of production costs in poultry sector in increasing the efficiency of production-financial functioning of economic subjects. The authors prove that to compare the costs dynamics, the relative indicators should be cast to each 100 sq.m. of a farm, i.e. the conditions should be typified in order to analyze the structure, trends and development prospects of the farms’ production-financial functioning. Conclusions are formulated, that the efficient management of production-financial functioning costs and structure will allow to achieve the increased efficiency of production-financial functioning of poultry farms. The crucial significance is attributed to innovative management, budget financing, special programs financing, and various forms of state-private partnership, which would increase the investment attraction of poultry sector