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description Publicationkeyboard_double_arrow_right Article 2021 UkrainePublisher:Издательство «Наука», Москва Э. Штапенко: ORCID 0000-0001-7046-3578, В. Заблудовский: ORCID 0000-0001-9930-2356, В. Титаренко: ORCID 0000-0001-6695-9810 ; RU: Предложены квантово-механические модели формирования металлоуглеродных комплексов ионов Co, Ni, Cu, Zn с молекулами фуллерена С60 и одностенными углеродными нанотрубками (ОУНТ) С48. Результаты расчетов показали, что в водных растворах электролитов возможна адсорбция ионов Co, Ni, Cu, Zn на поверхности фуллерена С60 и ОУНТ С48 с образованием стабильных ком- плексов углеродный наноматериал–металл (УНМ–М), причем минимальная энергия комплекса С60–М для ионов кобальта и меди соответствуют положению над центром ячейки С6, для иона ни- келя – над одинарной связью С–С в ячейке С6, а для иона цинка – над атомом углерода С. Опти- мизированные состояния комплексов С48–М соответствуют положению ионов металлов над цен- тром ячейки С6. ; EN: In order to investigate a deposition mechanism, authors have proposed a set of quantum chemical models for formation of fullerene C60 and single-wall carbon nanotubes (SWNTs) C48 metal complexes with Co, Ni, Cu, and Zn. Obtained results proving that adsorption of Co, Ni, Cu, Zn ions on a surface of fullerene C60 and SWNT C48 from the aqueous solution of electrolytes is possible with formation of stable metal-doped carbon nanoparticle complexes. Minimum energy complexes of C60–Co and C60–Cu have corresponded to the structure where ion is located above the center of C6 cell. Meanwhile, C60–Ni complex reach a minimum en- ergy when ion is above the middle of a C–C bond, and for C60–Zn complex the most stable conformation is the one when ion is upon the carbon atom. All the optimized structure for metal complexes with C48 has shown ions been located above the C6 cell’s center. ; Джексонский государственный университет, Джексон, Миссисипи, США
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For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article 2024Publisher:Zenodo Authors: Kopiy, V. G; Bondarenko, L. V.;The current state of the macrozoobenthos in the pseudolittoral zone of the Kazachya Bay was studied and a comparative analysis of its qualitative composition and quantitative indicators was carried out in different periods and seasons of the research. In 2007–2010 and 2021–2022, 86 macrozoobenthos species from different taxa: Polychaeta (36 species), Crustacea (33), Mollusca (13), Platyhelminthes, Oligochaeta, Chironomidae and Nemertea were found. By 2022, their number increased by 1.6 times. Moreover, 38 species of hydrobionts were added to the list. Fourteen species of macrozoobenthos were identified only in 2007–2010. Average values of abundance and biomass of macrozoobenthos in 2007–2010 varied from 774±176 to 4051±306 ind./m2 and from 0.585±0.216 to 12.57±0.033 g/m2, respectively. In 2021- 2022, they varied from 24±17 to 7352±3514 individuals/m2 and from 0.021±0.016 to 18.945±11.557 g/m2, respectively. In both periods, maximum abundance of macrozoobenthos formed by Polychaeta was registered in summer. In 2007–2010, the maximum biomass of macrozoobenthos was registered in summer, and in 2021–2022 it was observed in autumn. Mollusks made a significant contribution to this indicator in both periods. The trophic structure of macrozoobenthos is represented by polyphages, phytophages, detritophages and carnivores. In 2007–2010, oligochaetes were registered in 43 % of the samples in winter; H. acuta (Draparnaud, 1805), which belongs to plant detritivores, was the dominanhe species from April to September. In 2021–2022, the largest number of mass species was registered in the autumn-winter period, and S. papillocercus Bobretzky, 1872 dominated there. In spring and summer, polychaetes Capitella capitata (Fabricius, 1780), Salvatoria clavate (Claparиde, 1863), Microphthalmus fragilis Bobretzky, 1870 and amphipod Pectenogammarus foxi (Schellenberg, 1928) - representatives of polyphagous and phytophagous species - dominated in terms of occurrence. Changes in the number and taxonomic diversity of mass species with different feeding types in different seasons can be associated with the breeding season of hydrobionts and changes in the food supply.
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For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article 2021 UkrainePublisher:Національний технічний університет "Харківський політехнічний інститут" Authors: Dimov, Milen;В статье проведен анализ состояния, проблем и перспектив развития современной электроэнергетики. Определены направления ее развития с учетом выбора технико-экономического сценария развития, сопутствующих факторов и их взаимного влияния. Целью работы являлось определение перспективных направлений устойчивого развития национальной электроэнергетики с целью обеспечения энергобезопасности Украины, проведение сравнительного анализа источников электроэнергии, подтверждение необходимости совершенствования основных источников – турбогенераторов. Установлены достоинства и недостатки, мировые тенденции дальнейшего использования современных источников электроэнергии – тепловых (включая атомные) электростанций и станций от возобновляемых источников энергии. Определены внутренние и внешние угрозы энергетической безопасности Украины. Установлено, что в связи с активным ростом населения планеты и с увеличением его энергетической активности электроэнергии от возобновляемых источников энергии будет недостаточно, что ближайшие 20-30 лет основными источниками электроэнергии будут атомные электростанции и это подтверждает необходимость проведения работ по совершенствованию турбогенераторов. Установлены направления совершенствования конструкций турбогенераторов и систем охлаждения. Отмечено, что совершенствование турбогенераторов требует одновременного повышения эффективности и систем, обеспечивающих их работу: систем снабжения газом, водой и маслом, системы возбуждения. Показана необходимость полного внедрения автоматического контроля состояния турбогенераторов, использования приемов современной технической диагностики наиболее напряженных узлов и элементов как в режиме online, так и при проведении плановых и аварийных ремонтов. Подтверждение необходимости проведения работ по совершенствованию отечественных турбогенераторов вызвано появлением в общей энергосистеме Украины новых типов электроэнергетических источников, которые пользуются активной государственной поддержкой. Отмечена перспективность использования возобновляемых источников энергии с точки зрения снижения экологических проблем, но только для индивидуальных потребителей. Проанализированы преимущества, недостатки и проблемы использования возобновляемых источников энергии, которые наиболее приемлемы для Украины. ; During the research, an analytical analysis of the electricity sources, which are installed at power plants in Ukraine and the world, was carried out, taking into account the growth of the planet's population and its energy activity. Cyclic theory was chosen as the theoretical basis for forecasting. On the basis of this theory, global development trends, advantages and disadvantages of currently used sources of electricity - thermal (including nuclear) power plants and stations that operate from renewable energy sources - have been established. A review of literary sources on the methods of the energy sector forecasting the development, including the development of the energy sector in Ukraine, has been carried out. Originality. It has been established that due to the active growth of the planet's population, with the increase in its energy activity, obtaining electricity from renewable energy sources is not enough, that for the next 20-30 years nuclear power plants will be the main sources of electricity. The internal and external threats to the energy security of Ukraine, directions of development of turbogenerator construction, ways to improve turbogenerators, to increase their energy efficiency, power per unit of performance, to increase the readiness and maneuverability factors, and overload capacity have been identified. Practical significance. The need to continue the modernization and improvement of the turbogenerators of nuclear power plant units, as the main sources of electricity, has been proved. The directions of their improvement are established: increasing the power in the established sizes, making changes to the design of the turbogenerators inactive elements, replacing the cooling agent to keep Ukrainian turbogenerators at the world level, improving auxiliary systems, improving and increasing the reliability of the excitation system, introduction of automatic systems for monitoring the state turbogenerators. Possible limits of use, advantages, disadvantages and problems of using renewable energy sources for Ukraine have been established.
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For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article 2021 UkrainePublisher:Національний технічний університет "Харківський політехнічний інститут" Authors: Lasocki, Jakub;В электромеханическом индукционном ускорителе цилиндрической конфигурации наибольшая амплитуда тока в обмотке индуктора возникает при максимальном начальном смещении, но амплитуда тока в обмотке якоря при этом наименьшая. Наибольшая величина тока в обмотке якоря возникает при отсутствии начального смещения. При возбуждении от емкостного накопителя энергии электродинамическая сила между обмотками имеет начальную ускоряющую и последующую тормозящую составляющие. Вследствие этого скорость якоря вначале возрастает до максимально величины, но затем уменьшается к моменту окончания электромагнитного процесса. При возбуждении ускорителя от источника переменного напряжения (ИПН) между токами в обмотках возникает фазовый сдвиг, приводящий к возникновению чередующихся ускоряющих и тормозящих составляющих электродинамической силы. Ускоряющие составляющие силы преобладают над тормозящими составляющими, что обеспечивает перемещение якоря. При частоте ИПН 50 Гц амплитуда тока в обмотке якоря меньше, чем в обмотке индуктора. С увеличением частоты ИПН фазовый сдвиг между токами обмоток уменьшается, ток в обмотке индуктора уменьшается, а в обмотке якоря увеличивается. Ускоряющие составляющие силы увеличиваются, а тормозящие уменьшаются. При повышении частоты ИПН до 500 Гц плотность тока в обмотке якоря превышает аналогичную величину в обмотке индуктора. ; At a frequency of an alternating voltage source of 50 Hz, the current amplitude in the armature winding is less than in the inductor winding. With an increase in the source frequency to 250 Hz, the phase shift between the winding currents decreases. The current in the inductor winding decreases, and in the armature winding it increases. The accelerating components of the force increase, and the braking ones decrease. With an increase in the source frequency to 500 Hz, the current density in the armature winding exceeds that in the inductor winding. In this case, the phase shift between the windings is further reduced.
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For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article 2023Publisher:Редакция журнала Экономика и предпринимательство The article examines the prerequisites for expanding the Russian-Chinese strategic partnership in the context of the SCO as an element of a multipolar world. The author analyzed the development of Russian-Chinese relations within the framework of the SCO for the short, medium and long term. The article provides a retrospective analysis of the formation of the SCO, considers the structure and main activities of the SCO, characterizes Russia's strategic interests in the SCO in the context of ensuring security in the Eurasian region. В статье исследованы предпосылки расширения российско-китайского стратегического партнерства в контексте ШОС как элемента многополярного мира. Автором проведен анализ развития российско-китайских отношений в рамках ШОС на ближайшую, среднесрочную и долгосрочную перспективы. В статье проведен ретроспективный анализ формирования ШОС, рассмотрена структура и основные направления деятельности ШОС, охарактеризованы стратегические интересы России в ШОС в контексте обеспечения безопасности в евразийском регионе. Экономика и предпринимательство, Выпуск 6 (155) 2023, Pages 309-317
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For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article 2021 UkrainePublisher:БГАТУ Authors: Skliar, Oleksandr; Skliar, Radmila;RU: В статье раскрыты экологические аспекты производства биогаза с органических отходов животноводческой отрасли и преимущества данной технологии. EN: The article reveals the environmental aspects of biogas production from organic waste of the livestock industry and the advantages of this technology.
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For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article 2021 UkrainePublisher:Національний технічний університет "Харківський політехнічний інститут" Целью работы является экспериментальная проверка существования области значений параметров емкостного накопителя энергии магнитно-импульсной установки с управляемым вакуумным разрядником, в которой с высокой вероятностью происходит«срез» импульсов разрядного тока и расширение цилиндрических тонкостенных трубчатых заготовок при помощи внешнего индуктора. Методика. Эксперименты были проведены на высоковольтной магнитно-импульсной установке НТУ «ХПИ», оснащенной управляемым вакуумным разрядником. Использовали многовитковый индуктор, внутрь которого помещалась диэлектрическая матрица и заготовка из алюминиевого сплава. Изменяли емкость и зарядное напряжение накопителя энергии. Импульсы разрядного тока измеряли при помощи пояса Роговского и регистрировали на осциллографе. Результаты. Магнитно-импульсным расширением цилиндрических заготовок при помощи внешнего индуктора получены детали сложной формы и осуществлено снятие металлической детали, напрессованной на диэлектрический стержень. Научная новизна. Показано, что частоту«срезаемого» импульса, при которой амплитуда отрицательного давления магнитного поля близка к максимальной, а также зарядное напряжение необходимо согласовывать с параметрами емкостного накопителя энергии, при которых с высокой вероятностью происходит«срез» импульса. Практическое значение. Получены рекомендации для использования в магнитно-импульсных технологиях, основанных на применении «срезанных» импульсов, установок с управляемыми вакуумными разрядниками. ; Purpose. An experimental verification of the existence of a range of values for the parameters of the capacitive energy storage of the magnetic-pulse installations with controlled vacuum discharger, in which, with a high probability, there is a «cut» of the discharge currentpulses and the expansion of cylindrical thin-walled tubular workpieces using an external coil. Methodology. High voltage magnetic-pulse installation of NTU «KhPI» with controlled vacuum discharger, multiturn coil with inside dielectrical die and insidealuminum alloy workpiece are used. The capacitance and charge voltage of capacitive energy storage are changed. Discharge current pulses are measured by Rogowski coil and the oscillograph. Results. Parts of complicated shape are made by expansion of cylindrical tubular work-pieces with help of external coil. Pressed metallic tubular part is removable from inner dielectric rod. Originality. The frequency of «cut» pulse is defined by negative magnetic field pressure amplitude. It is shown that we must coordinate this frequency and charge voltage with capacitive storage parameters by high probability of pulse «cut». Practical value. It is shown how to use installations with controlled vacuum dischargers in magnetic forming technology based on «cut» pulses.
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description Publicationkeyboard_double_arrow_right Article 2021 UkrainePublisher:Издательство «Наука», Москва Э. Штапенко: ORCID 0000-0001-7046-3578, В. Заблудовский: ORCID 0000-0001-9930-2356, В. Титаренко: ORCID 0000-0001-6695-9810 ; RU: Предложены квантово-механические модели формирования металлоуглеродных комплексов ионов Co, Ni, Cu, Zn с молекулами фуллерена С60 и одностенными углеродными нанотрубками (ОУНТ) С48. Результаты расчетов показали, что в водных растворах электролитов возможна адсорбция ионов Co, Ni, Cu, Zn на поверхности фуллерена С60 и ОУНТ С48 с образованием стабильных ком- плексов углеродный наноматериал–металл (УНМ–М), причем минимальная энергия комплекса С60–М для ионов кобальта и меди соответствуют положению над центром ячейки С6, для иона ни- келя – над одинарной связью С–С в ячейке С6, а для иона цинка – над атомом углерода С. Опти- мизированные состояния комплексов С48–М соответствуют положению ионов металлов над цен- тром ячейки С6. ; EN: In order to investigate a deposition mechanism, authors have proposed a set of quantum chemical models for formation of fullerene C60 and single-wall carbon nanotubes (SWNTs) C48 metal complexes with Co, Ni, Cu, and Zn. Obtained results proving that adsorption of Co, Ni, Cu, Zn ions on a surface of fullerene C60 and SWNT C48 from the aqueous solution of electrolytes is possible with formation of stable metal-doped carbon nanoparticle complexes. Minimum energy complexes of C60–Co and C60–Cu have corresponded to the structure where ion is located above the center of C6 cell. Meanwhile, C60–Ni complex reach a minimum en- ergy when ion is above the middle of a C–C bond, and for C60–Zn complex the most stable conformation is the one when ion is upon the carbon atom. All the optimized structure for metal complexes with C48 has shown ions been located above the C6 cell’s center. ; Джексонский государственный университет, Джексон, Миссисипи, США
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For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article 2024Publisher:Zenodo Authors: Kopiy, V. G; Bondarenko, L. V.;The current state of the macrozoobenthos in the pseudolittoral zone of the Kazachya Bay was studied and a comparative analysis of its qualitative composition and quantitative indicators was carried out in different periods and seasons of the research. In 2007–2010 and 2021–2022, 86 macrozoobenthos species from different taxa: Polychaeta (36 species), Crustacea (33), Mollusca (13), Platyhelminthes, Oligochaeta, Chironomidae and Nemertea were found. By 2022, their number increased by 1.6 times. Moreover, 38 species of hydrobionts were added to the list. Fourteen species of macrozoobenthos were identified only in 2007–2010. Average values of abundance and biomass of macrozoobenthos in 2007–2010 varied from 774±176 to 4051±306 ind./m2 and from 0.585±0.216 to 12.57±0.033 g/m2, respectively. In 2021- 2022, they varied from 24±17 to 7352±3514 individuals/m2 and from 0.021±0.016 to 18.945±11.557 g/m2, respectively. In both periods, maximum abundance of macrozoobenthos formed by Polychaeta was registered in summer. In 2007–2010, the maximum biomass of macrozoobenthos was registered in summer, and in 2021–2022 it was observed in autumn. Mollusks made a significant contribution to this indicator in both periods. The trophic structure of macrozoobenthos is represented by polyphages, phytophages, detritophages and carnivores. In 2007–2010, oligochaetes were registered in 43 % of the samples in winter; H. acuta (Draparnaud, 1805), which belongs to plant detritivores, was the dominanhe species from April to September. In 2021–2022, the largest number of mass species was registered in the autumn-winter period, and S. papillocercus Bobretzky, 1872 dominated there. In spring and summer, polychaetes Capitella capitata (Fabricius, 1780), Salvatoria clavate (Claparиde, 1863), Microphthalmus fragilis Bobretzky, 1870 and amphipod Pectenogammarus foxi (Schellenberg, 1928) - representatives of polyphagous and phytophagous species - dominated in terms of occurrence. Changes in the number and taxonomic diversity of mass species with different feeding types in different seasons can be associated with the breeding season of hydrobionts and changes in the food supply.
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For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article 2021 UkrainePublisher:Національний технічний університет "Харківський політехнічний інститут" Authors: Dimov, Milen;В статье проведен анализ состояния, проблем и перспектив развития современной электроэнергетики. Определены направления ее развития с учетом выбора технико-экономического сценария развития, сопутствующих факторов и их взаимного влияния. Целью работы являлось определение перспективных направлений устойчивого развития национальной электроэнергетики с целью обеспечения энергобезопасности Украины, проведение сравнительного анализа источников электроэнергии, подтверждение необходимости совершенствования основных источников – турбогенераторов. Установлены достоинства и недостатки, мировые тенденции дальнейшего использования современных источников электроэнергии – тепловых (включая атомные) электростанций и станций от возобновляемых источников энергии. Определены внутренние и внешние угрозы энергетической безопасности Украины. Установлено, что в связи с активным ростом населения планеты и с увеличением его энергетической активности электроэнергии от возобновляемых источников энергии будет недостаточно, что ближайшие 20-30 лет основными источниками электроэнергии будут атомные электростанции и это подтверждает необходимость проведения работ по совершенствованию турбогенераторов. Установлены направления совершенствования конструкций турбогенераторов и систем охлаждения. Отмечено, что совершенствование турбогенераторов требует одновременного повышения эффективности и систем, обеспечивающих их работу: систем снабжения газом, водой и маслом, системы возбуждения. Показана необходимость полного внедрения автоматического контроля состояния турбогенераторов, использования приемов современной технической диагностики наиболее напряженных узлов и элементов как в режиме online, так и при проведении плановых и аварийных ремонтов. Подтверждение необходимости проведения работ по совершенствованию отечественных турбогенераторов вызвано появлением в общей энергосистеме Украины новых типов электроэнергетических источников, которые пользуются активной государственной поддержкой. Отмечена перспективность использования возобновляемых источников энергии с точки зрения снижения экологических проблем, но только для индивидуальных потребителей. Проанализированы преимущества, недостатки и проблемы использования возобновляемых источников энергии, которые наиболее приемлемы для Украины. ; During the research, an analytical analysis of the electricity sources, which are installed at power plants in Ukraine and the world, was carried out, taking into account the growth of the planet's population and its energy activity. Cyclic theory was chosen as the theoretical basis for forecasting. On the basis of this theory, global development trends, advantages and disadvantages of currently used sources of electricity - thermal (including nuclear) power plants and stations that operate from renewable energy sources - have been established. A review of literary sources on the methods of the energy sector forecasting the development, including the development of the energy sector in Ukraine, has been carried out. Originality. It has been established that due to the active growth of the planet's population, with the increase in its energy activity, obtaining electricity from renewable energy sources is not enough, that for the next 20-30 years nuclear power plants will be the main sources of electricity. The internal and external threats to the energy security of Ukraine, directions of development of turbogenerator construction, ways to improve turbogenerators, to increase their energy efficiency, power per unit of performance, to increase the readiness and maneuverability factors, and overload capacity have been identified. Practical significance. The need to continue the modernization and improvement of the turbogenerators of nuclear power plant units, as the main sources of electricity, has been proved. The directions of their improvement are established: increasing the power in the established sizes, making changes to the design of the turbogenerators inactive elements, replacing the cooling agent to keep Ukrainian turbogenerators at the world level, improving auxiliary systems, improving and increasing the reliability of the excitation system, introduction of automatic systems for monitoring the state turbogenerators. Possible limits of use, advantages, disadvantages and problems of using renewable energy sources for Ukraine have been established.
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For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article 2021 UkrainePublisher:Національний технічний університет "Харківський політехнічний інститут" Authors: Lasocki, Jakub;В электромеханическом индукционном ускорителе цилиндрической конфигурации наибольшая амплитуда тока в обмотке индуктора возникает при максимальном начальном смещении, но амплитуда тока в обмотке якоря при этом наименьшая. Наибольшая величина тока в обмотке якоря возникает при отсутствии начального смещения. При возбуждении от емкостного накопителя энергии электродинамическая сила между обмотками имеет начальную ускоряющую и последующую тормозящую составляющие. Вследствие этого скорость якоря вначале возрастает до максимально величины, но затем уменьшается к моменту окончания электромагнитного процесса. При возбуждении ускорителя от источника переменного напряжения (ИПН) между токами в обмотках возникает фазовый сдвиг, приводящий к возникновению чередующихся ускоряющих и тормозящих составляющих электродинамической силы. Ускоряющие составляющие силы преобладают над тормозящими составляющими, что обеспечивает перемещение якоря. При частоте ИПН 50 Гц амплитуда тока в обмотке якоря меньше, чем в обмотке индуктора. С увеличением частоты ИПН фазовый сдвиг между токами обмоток уменьшается, ток в обмотке индуктора уменьшается, а в обмотке якоря увеличивается. Ускоряющие составляющие силы увеличиваются, а тормозящие уменьшаются. При повышении частоты ИПН до 500 Гц плотность тока в обмотке якоря превышает аналогичную величину в обмотке индуктора. ; At a frequency of an alternating voltage source of 50 Hz, the current amplitude in the armature winding is less than in the inductor winding. With an increase in the source frequency to 250 Hz, the phase shift between the winding currents decreases. The current in the inductor winding decreases, and in the armature winding it increases. The accelerating components of the force increase, and the braking ones decrease. With an increase in the source frequency to 500 Hz, the current density in the armature winding exceeds that in the inductor winding. In this case, the phase shift between the windings is further reduced.
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For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article 2023Publisher:Редакция журнала Экономика и предпринимательство The article examines the prerequisites for expanding the Russian-Chinese strategic partnership in the context of the SCO as an element of a multipolar world. The author analyzed the development of Russian-Chinese relations within the framework of the SCO for the short, medium and long term. The article provides a retrospective analysis of the formation of the SCO, considers the structure and main activities of the SCO, characterizes Russia's strategic interests in the SCO in the context of ensuring security in the Eurasian region. В статье исследованы предпосылки расширения российско-китайского стратегического партнерства в контексте ШОС как элемента многополярного мира. Автором проведен анализ развития российско-китайских отношений в рамках ШОС на ближайшую, среднесрочную и долгосрочную перспективы. В статье проведен ретроспективный анализ формирования ШОС, рассмотрена структура и основные направления деятельности ШОС, охарактеризованы стратегические интересы России в ШОС в контексте обеспечения безопасности в евразийском регионе. Экономика и предпринимательство, Выпуск 6 (155) 2023, Pages 309-317
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For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article 2021 UkrainePublisher:БГАТУ Authors: Skliar, Oleksandr; Skliar, Radmila;RU: В статье раскрыты экологические аспекты производства биогаза с органических отходов животноводческой отрасли и преимущества данной технологии. EN: The article reveals the environmental aspects of biogas production from organic waste of the livestock industry and the advantages of this technology.
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You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
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For further information contact us at helpdesk@openaire.eu0 citations 0 popularity Average influence Average impulse Average Powered by BIP!
more_vert add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
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For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article 2021 UkrainePublisher:Національний технічний університет "Харківський політехнічний інститут" Целью работы является экспериментальная проверка существования области значений параметров емкостного накопителя энергии магнитно-импульсной установки с управляемым вакуумным разрядником, в которой с высокой вероятностью происходит«срез» импульсов разрядного тока и расширение цилиндрических тонкостенных трубчатых заготовок при помощи внешнего индуктора. Методика. Эксперименты были проведены на высоковольтной магнитно-импульсной установке НТУ «ХПИ», оснащенной управляемым вакуумным разрядником. Использовали многовитковый индуктор, внутрь которого помещалась диэлектрическая матрица и заготовка из алюминиевого сплава. Изменяли емкость и зарядное напряжение накопителя энергии. Импульсы разрядного тока измеряли при помощи пояса Роговского и регистрировали на осциллографе. Результаты. Магнитно-импульсным расширением цилиндрических заготовок при помощи внешнего индуктора получены детали сложной формы и осуществлено снятие металлической детали, напрессованной на диэлектрический стержень. Научная новизна. Показано, что частоту«срезаемого» импульса, при которой амплитуда отрицательного давления магнитного поля близка к максимальной, а также зарядное напряжение необходимо согласовывать с параметрами емкостного накопителя энергии, при которых с высокой вероятностью происходит«срез» импульса. Практическое значение. Получены рекомендации для использования в магнитно-импульсных технологиях, основанных на применении «срезанных» импульсов, установок с управляемыми вакуумными разрядниками. ; Purpose. An experimental verification of the existence of a range of values for the parameters of the capacitive energy storage of the magnetic-pulse installations with controlled vacuum discharger, in which, with a high probability, there is a «cut» of the discharge currentpulses and the expansion of cylindrical thin-walled tubular workpieces using an external coil. Methodology. High voltage magnetic-pulse installation of NTU «KhPI» with controlled vacuum discharger, multiturn coil with inside dielectrical die and insidealuminum alloy workpiece are used. The capacitance and charge voltage of capacitive energy storage are changed. Discharge current pulses are measured by Rogowski coil and the oscillograph. Results. Parts of complicated shape are made by expansion of cylindrical tubular work-pieces with help of external coil. Pressed metallic tubular part is removable from inner dielectric rod. Originality. The frequency of «cut» pulse is defined by negative magnetic field pressure amplitude. It is shown that we must coordinate this frequency and charge voltage with capacitive storage parameters by high probability of pulse «cut». Practical value. It is shown how to use installations with controlled vacuum dischargers in magnetic forming technology based on «cut» pulses.
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You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
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For further information contact us at helpdesk@openaire.eu0 citations 0 popularity Average influence Average impulse Average Powered by BIP!
more_vert add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=base_search_::e5c6fbfdec84a96c9fbe51aaf0489cb9&type=result"></script>'); --> </script>
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