350 research outputs found

    Влияние минералов на биосовместимость воды с организмом человека

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    Influence on water of various minerals is investigated. It is established that biocompatibility of water without minerals with a human body improves in the following sequence: plumbingИсследовано воздействие на воду различных минералов. Установлено, что биосовместимость с организмом человека у неминерализованной воды улучшается в следующей последовательности: водопроводная < дистиллированная < пропущенная через фильтр Никкен < вода Росинка < родниковая. Кроме того, что родниковая вода является лучшей по биосовместимости, она приводит к восстановлению до нормы минеральное состояние и радиоактивную нагрузку человека. Анализируется эффект положительного воздействия кремниевой воды на здоровье человека

    Solitary electromagnetic waves propagation in the asymmetric oppositely-directed coupler

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    We consider the electromagnetic waves propagating in the system of coupled waveguides. One of the system components is a standard waveguide fabricated from nonlinear medium having positive refraction and another component is a waveguide produced from an artificial material having negative refraction. The metamaterial constituting the second waveguide has linear characteristics and a wave propagating in the waveguide of this type propagates in the direction opposite to direction of energy flux. It is found that the coupled nonlinear solitary waves propagating both in the same direction are exist in this oppositely-directed coupler due to linear coupling between nonlinear positive refractive waveguide and linear negative refractive waveguide. The corresponding analytical solution is found and it is used for numerical simulation to illustrate that the results of the solitary wave collisions are sensible to the relative velocity of the colliding solitary waves.Comment: 9 pages,5 figure

    Chemistry for engineering education

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    We will look at the practical implementation of the disciplines of chemistry intechnological orientation programs. It is shown that with the uniformrequirements of the GEF to the quality of training, volumes for disciplines ofchemistry differ significantly. These shortcomings inherent in the existingteaching methods and ways to improve the learning process are discussed. Notedthat the promising direction of the basic educational program is to build themin a modular fashion.Рассмотрена практика реализации дисциплин химии в программах технологической направленности. Показано, что при единых требованиях ФГОС к качеству подготовки специалистов объемы дисциплин химии существенно различаются. Указаны недостатки, присущие существующей методике обучения, и рассмотрены пути повышения эффективности учебного процесса. Отмечено, что перспективным направлением реализации ООП является построение их по модульному принципу

    Peculiarities of regional marking of copper tubes in the EU and the EEA

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    В статье представлены результаты сравнения маркировки медных труб, выполняемой в соответствии с EN 12735–1:2010 и ГОСТ 617–2006. Маркировка в соответствии с ГОСТ 617–2006 содержит более подробную информацию о медных трубах, чем маркировка ЕСThe article presents the results of comparing the marking of copper tubes, performed in accordance with EN 12735–1:2010 and GOST 617–2006. The marking performed in accordance with GOST 617–2006 contains more detailed information about copper pipes tube, then the marking of E

    TENSILE PROPERTIES AND MICROSTRUCTURE OF DIRECT METAL LASER-SINTERED TI6AL4V (ELI) ALLOY

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    Published ArticleDirect metal laser sintering (DMLS) is an additive manufacturing technology used to melt metal powder by high laser power to produce customised parts, light-weight structures, or other complex objects. During DMLS, powder is melted and solidified track-by-track and layer-by-layer; thus, building direction can influence the mechanical properties of DMLS parts. The mechanical properties and microstructure of material produced by DMLS can depend on the powder properties, process parameters, scanning strategy, and building geometry. In this study, the microstructure, tensile properties, and porosity of DMLS Ti6Al4V (ELI) horizontal samples were analysed. Defect analysis by CT scans in pre-strained samples was used to detect the crack formation mechanism during tensile testing of as-built and heat-treated samples. The mechanical properties of the samples before and after stress relieving are discussed

    Design of professional career by future experts in the sphere of art and culture

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    The problem of planning of professional life is discussed by experts in the field of art and culture, experience of application of active forms of education with use of presentation during psychology and pedagogical lessons is described in the article, aspects of efficiency of their realization in training of students of higher education institution are considered, possibilities of application of modern means of presentation in the course of professional formation of future specialist producer are revealed. Problems of design of a professional way of a personality in the context of modern social and economic conditions are complicated by unstable conditions, characterized by social, economic and political changes, prompt transformations in the sphere of values and purposes of personality that predetermines essentially new requirements to psychological structure of the personality which would provide the most effective self-realization and success in professional activity. That means that actual tendencies of process of vocational training of future experts in the sphere of art are ways of application of means of modern technologies in the course of training. We believe that use of active forms of education with use of presentation, and also analysis of perceived phenomena by students will form readiness of future experts of the sphere of art and culture for design of own professional future.peer-reviewe

    Semiotic space of the frontier «city N» using the example of Samara of the provincial period (1851–1917)

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    The article analyzes the complex semiosphere of the city of Samara in the second half of the XIX – early XX century, transformed into a provincial center that has no ancient urban history, geographically belonging to the «inner outskirts» of the Russian Empire and combining simultaneously the features of the frontier and the provincial «city of N.» The authors prove that one of the new phenomena of urban socio-cultural life of the era of modernization is fashion, not only as an area responsible for urban costume, but also as a broad program of fashion signs, the assimilation of which led to the transformation of the provincial center, brought into a much larger rural environment, into a kind of «crucible» of culture, pulling under the surrounding space has its own level. It’s easy to be a city where the whole territory is permeated with urban history. But how to develop a set of urban signs of culture where the «wild field» was historically located earlier

    Problems of Russia’s Integration into the Legal Framework of Europe

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    In the article the authors examine the issues of legal interaction between Russia and the European Court of Human Rights on the basis of generalization of empirical results obtained during the sociological survey of groups of respondents of different professional backgrounds. The blocks of legislative and law enforcement problems that need to be resolved are highlighted. The conclusion is made about the need to transform and unify the existing Russian legislation and law enforcement practices, relying on the practice of the European Court of Human Rights and the practice of national courts. Legislative proposals and law enforcement recommendations are formulated based on the results of the study. In the article, on the basis of generalization of empirical results obtained during the sociological survey of groups of respondents with different professional backgrounds, the authors examine the issues of Russia’s interaction with the European Court of Human Rights. The blocks of legislative and law enforcement problems that need to be resolved are highlighted. Drawing on the practice of the European Court of Human Rights and the practice of national courts, it is concluded that it is necessary to transform and unify the existing Russian legislation and law enforcement practice. The results of the study formulate legislative proposals and enforcement recommendations. &nbsp; &nbsp; Keywords: justice, civil proceedings, Convention for the Protection of Human Rights and Fundamental Freedoms, European Court of Human Rights, law enforcement, case la

    PECULIAR FEATURES OF TEACHING HISTORY TO ECONOMIST STUDENTS IN RUSSIAN UNIVERSITIES

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    The purpose of the article: The article is aimed at studying of key issues of the set of methods and methodology of teaching history to students of the direction "Economics"; identifying of key aspects of the history course, competent understanding whereof is important for development of professional competencies of future economists, is of special attention.Materials and methods: The leading approach to the study of this problem is the analysis of key problem issues of the history course, a competent understanding of which is important for the formation of professional competencies of economists.Results of the research: The article shows that in the history of economics there are a lot of controversial, controversial issues on which quite superficial, subjective judgments and conclusions can occur in the journalistic, and sometimes academic literature. A number of similar questions are considered, the features of their study with students are revealed. The work identifies key aspects of the course of history, a competent understanding of which is important for the formation of professional competencies of future economists. The recommendations of the methodological and methodological plan for their study are proposed to increase the effectiveness of training future economists. Applications: This research can be used for the universities, teachers, and students. Novelty/Originality: In this research, the model of peculiar features of teaching history to economist students in Russian universities is presented in a comprehensive and complete manner

    Comparative analysis of the structure and internal stress in Ti-6Al-4V alloys manufactured by 3D printing and processing with screw extrusion

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    Study is based on the compare characterization of the structure and evaluation of the residual internal stresses in Ti-6Al-4V samples manufactured by the 3D printing (selective laser melting) and in the Ti-6Al-4V samples obtained with using of the severe plastic deformation by screw extrusion. The microstructure and residual stresses were examined by transmission electron microscope and X-ray diffractometer. High tensile internal residual stresses in the 3D printed sample were found. The high compressive residual internal stresses were found in the hot pressed and in the twisted samples. It was shown that arising of the high residual stresses in the studied samples under various technological processes occurred in various ways. The residual stresses in the severe plastic deformed samples arose due to non-uniform volumetric plastic deformation. In 3D printed sample, the residual tensile stresses arose from both phase (martensitic) transformation and thermal deformation. © Published under licence by IOP Publishing Ltd
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