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  • Authors: Korzavina, A. A.; Chernenko, Ya. A.; Anufrieva, E. I.;

    The article examines the role of "green universities" included in the international ranking of sustainable development of UI Green Metric, in improving energy efficiency and developing energy-saving technologies. В статье рассмотрена роль «зеленых университетов», вошедших в международный рейтинг устойчивого развития UI Green Metric, в повышении энергоэффективности и развитии энергосберегающих технологий.

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  • image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
    Authors: V P, Nuzhnyĭ; V I, Kharchenko; A S, Akopian;
    image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/ Терапевтический архи...arrow_drop_down
    image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
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      image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/ Терапевтический архи...arrow_drop_down
      image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
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  • image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/

    Today in connection with deficiency and addition of value of organic fuel, aggravation of an ecological situation in the world, threat of global warming interest to small hydroelectric power stations reinstated. Thus it is necessary to note economic feasibility of building of minihydroelectric power station as an alternative source of power supply of the enterprises and housing and communal services fund, even at their significant removal from this source. In this connection the author from the scientific point of view considers the basic directions of development of small power and feature of application of independent energy sources. Сегодня в связи с дефицитом и увеличением стоимости органического топлива, ухудшением экологической ситуации в мире, угрозой глобального потепления интерес к малым ГЭС возобновился. При этом стоит отметить экономическую целесообразность строительства мини-ГЭС в качестве альтернативного источника энергоснабжения предприятий и фонда ЖКХ, даже при значительном их удалении от этого источника. В связи с этим автор с научной точки зрения рассматривает основные направления развития малой энергетики и особенности применения автономных источников энергии.

    image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/ Energy Safety and En...arrow_drop_down
    image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
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      image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/ Energy Safety and En...arrow_drop_down
      image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
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  • Authors: A G, SLOBODSKOI; I F, DAVYDOV;
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  • Authors: S B, SHERASHOV;
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  • image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/

    Комбинированное охлаждение узла конденсации позволяет стабилизировать давление конденсации и существенно сократить потребление охлаждающей воды и электроэнергии. Существующие методики расчета конденсаторов позволяют оптимально проектировать конденсаторы с водяным или воздушным охлаждением и не могут быть корректны при проектировании узла конденсации комбинированного охлаждения. Для технически и экономически обоснованных рекомендаций по доле участия в охлаждении конденсаторов воды и воздуха требуется анализ работы такой холодильной машины в течении года. Для этого разработана математическая модель, описывающая работу всех элементов холодильной машины, а так же их технические, и экономические показатели. Проводя анализ работы холодильной машины в течении всего периода эксплуатации определяем, какая доля участия воды и воздуха в охлаждении конденсаторов является наилучшей. По результатам такого анализа принимаются решения о проектировании оптимального комбинированного конденсатора, а так же составляется график регулирования расходов воды и воздуха в течении года. В анализе учитываются стоимость охлаждающей воды, электроэнергии, энергетические затраты на транспортировку охлаждающих сред, на привод компрессоров, а так же капитальные и эксплуатационные затраты.

    image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/ Problems of the Regi...arrow_drop_down
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      image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/ Problems of the Regi...arrow_drop_down
      image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
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  • Authors: E E, Kovalev;

    This review of radiation protection in space flight considers specific features of radiation effects (the composition of radiation, space-time changes of fluxes of charged particles, nonuniform radiation fields in spacecraft modules, formation of secondary radiations, etc) and the major sources of radiation hazards in space (Earth radiation belts, solar and galactic cosmic radiations). The paper presents estimates of the equivalent dose of protons and electrons of the Earth radiation belts at various orbits, as well as radiation characteristics of certain proton solar flares and galactic cosmic radiation. The paper also discusses the present-day criteria of radiation safety used in calculations of the shielding of manned spacecraft. The paper gives the standards of allowable radiation levels used in the USSR.

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  • image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
    image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/ Problems of the Regi...arrow_drop_down
    image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
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      image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/ Problems of the Regi...arrow_drop_down
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  • Authors: V F, Kamenev;

    pmid: 62875

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    Authors: L P Kalinin; I V Golub; M Tirshu; D A Zaitsev;

    The aim of the work is to develop technical measures to improve the quality of the power transmission process through electrical link, which contains a frequency converter based on a PST (phase-shifting transformer) with circular rotation of the output voltage phase in relation to the input, made according to the triangle scheme and controlled by means of power electronics. To achieve this goal, the use of longitudinal inductive elements (chokes) has been proposed as one of the measures that significantly improves the controlled mode parameters in the process of frequency conversion. The problem has been solved by performing computational experiments on simulation models of electrical links, combining two power systems with a frequency of 60 and 50 Hz, respectively. The structure of electrical links at various stages of the study has included several circuit variants of a frequency converter (single-channel circuit, dual-channel with reversing control winding sections, dual-channel circuit without reversing control winding sections) and has developed by authors earlier. In the process of research, the value of inductance of chokes has been changed, as well as their place of connection. The controlled transmission's characteristics have been analyzed as well. The novelty of the work lies in the use of longitudinally included inductive elements as a possible solution to the problem of improving the quality of power transmission when combining power systems with different operating frequencies using static frequency converters. The optimal values of the parameters of inductive elements, comprised between 0.03-0.035Hn for all circuit versions of the converter, have been identified.

    image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/ ZENODOarrow_drop_down
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    Article . 2019
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  • Authors: Korzavina, A. A.; Chernenko, Ya. A.; Anufrieva, E. I.;

    The article examines the role of "green universities" included in the international ranking of sustainable development of UI Green Metric, in improving energy efficiency and developing energy-saving technologies. В статье рассмотрена роль «зеленых университетов», вошедших в международный рейтинг устойчивого развития UI Green Metric, в повышении энергоэффективности и развитии энергосберегающих технологий.

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  • image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
    Authors: V P, Nuzhnyĭ; V I, Kharchenko; A S, Akopian;
    image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/ Терапевтический архи...arrow_drop_down
    image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
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      image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/ Терапевтический архи...arrow_drop_down
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    Today in connection with deficiency and addition of value of organic fuel, aggravation of an ecological situation in the world, threat of global warming interest to small hydroelectric power stations reinstated. Thus it is necessary to note economic feasibility of building of minihydroelectric power station as an alternative source of power supply of the enterprises and housing and communal services fund, even at their significant removal from this source. In this connection the author from the scientific point of view considers the basic directions of development of small power and feature of application of independent energy sources. Сегодня в связи с дефицитом и увеличением стоимости органического топлива, ухудшением экологической ситуации в мире, угрозой глобального потепления интерес к малым ГЭС возобновился. При этом стоит отметить экономическую целесообразность строительства мини-ГЭС в качестве альтернативного источника энергоснабжения предприятий и фонда ЖКХ, даже при значительном их удалении от этого источника. В связи с этим автор с научной точки зрения рассматривает основные направления развития малой энергетики и особенности применения автономных источников энергии.

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  • Authors: A G, SLOBODSKOI; I F, DAVYDOV;
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  • Authors: S B, SHERASHOV;
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    Комбинированное охлаждение узла конденсации позволяет стабилизировать давление конденсации и существенно сократить потребление охлаждающей воды и электроэнергии. Существующие методики расчета конденсаторов позволяют оптимально проектировать конденсаторы с водяным или воздушным охлаждением и не могут быть корректны при проектировании узла конденсации комбинированного охлаждения. Для технически и экономически обоснованных рекомендаций по доле участия в охлаждении конденсаторов воды и воздуха требуется анализ работы такой холодильной машины в течении года. Для этого разработана математическая модель, описывающая работу всех элементов холодильной машины, а так же их технические, и экономические показатели. Проводя анализ работы холодильной машины в течении всего периода эксплуатации определяем, какая доля участия воды и воздуха в охлаждении конденсаторов является наилучшей. По результатам такого анализа принимаются решения о проектировании оптимального комбинированного конденсатора, а так же составляется график регулирования расходов воды и воздуха в течении года. В анализе учитываются стоимость охлаждающей воды, электроэнергии, энергетические затраты на транспортировку охлаждающих сред, на привод компрессоров, а так же капитальные и эксплуатационные затраты.

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  • Authors: E E, Kovalev;

    This review of radiation protection in space flight considers specific features of radiation effects (the composition of radiation, space-time changes of fluxes of charged particles, nonuniform radiation fields in spacecraft modules, formation of secondary radiations, etc) and the major sources of radiation hazards in space (Earth radiation belts, solar and galactic cosmic radiations). The paper presents estimates of the equivalent dose of protons and electrons of the Earth radiation belts at various orbits, as well as radiation characteristics of certain proton solar flares and galactic cosmic radiation. The paper also discusses the present-day criteria of radiation safety used in calculations of the shielding of manned spacecraft. The paper gives the standards of allowable radiation levels used in the USSR.

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  • Authors: V F, Kamenev;

    pmid: 62875

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    Authors: L P Kalinin; I V Golub; M Tirshu; D A Zaitsev;

    The aim of the work is to develop technical measures to improve the quality of the power transmission process through electrical link, which contains a frequency converter based on a PST (phase-shifting transformer) with circular rotation of the output voltage phase in relation to the input, made according to the triangle scheme and controlled by means of power electronics. To achieve this goal, the use of longitudinal inductive elements (chokes) has been proposed as one of the measures that significantly improves the controlled mode parameters in the process of frequency conversion. The problem has been solved by performing computational experiments on simulation models of electrical links, combining two power systems with a frequency of 60 and 50 Hz, respectively. The structure of electrical links at various stages of the study has included several circuit variants of a frequency converter (single-channel circuit, dual-channel with reversing control winding sections, dual-channel circuit without reversing control winding sections) and has developed by authors earlier. In the process of research, the value of inductance of chokes has been changed, as well as their place of connection. The controlled transmission's characteristics have been analyzed as well. The novelty of the work lies in the use of longitudinally included inductive elements as a possible solution to the problem of improving the quality of power transmission when combining power systems with different operating frequencies using static frequency converters. The optimal values of the parameters of inductive elements, comprised between 0.03-0.035Hn for all circuit versions of the converter, have been identified.

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