Персона: Загайнов, Валерий Анатольевич
Загружается...
Email Address
Birth Date
Научные группы
Организационные подразделения
Организационная единица
Институт общей профессиональной подготовки (ИОПП)
Миссией Института является:
фундаментальная базовая подготовка студентов, необходимая для получения качественного образования на уровне требований международных стандартов;
удовлетворение потребностей обучающихся в интеллектуальном, культурном, нравственном развитии и приобретении ими профессиональных знаний; формирование у студентов мотивации и умения учиться; профессиональная ориентация школьников и студентов в избранной области знаний, формирование способностей и навыков профессионального самоопределения и профессионального саморазвития.
Основными целями и задачами Института являются:
обеспечение высококачественной (фундаментальной) базовой подготовки студентов бакалавриата и специалитета; поддержка и развитие у студентов стремления к осознанному продолжению обучения в институтах (САЕ и др.) и на факультетах Университета; обеспечение преемственности образовательных программ общего среднего и высшего образования; обеспечение высокого качества довузовской подготовки учащихся Предуниверситария и школ-партнеров НИЯУ МИФИ за счет интеграции основного и дополнительного образования;
учебно-методическое руководство общеобразовательными кафедрами Института, осуществляющими подготовку бакалавров и специалистов по социо-гуманитарным, общепрофессиональным и естественнонаучным дисциплинам, обеспечение единства требований к базовой подготовке студентов в рамках крупных научно-образовательных направлений (областей знаний).
Статус
Фамилия
Загайнов
Имя
Валерий Анатольевич
Имя
7 results
Результаты поиска
Теперь показываю 1 - 7 из 7
- ПубликацияТолько метаданныеDestruction of real metal surface due to EM-field localization in fractal system of cracks(2020) Zubkov, P. V.; Krylov, S. Y.; Maksimenko, V. V.; Zagaynov, V. A.; Максименко, Владимир Викторович; Загайнов, Валерий Анатольевич© 2020 Elsevier B.V.A new physical mechanism is proposed in order to elucidate how properties of a metal surface can differ from those of bulk metal. It is related with localization of an external electromagnetic field in the cracks on the surface. The localization decreases Van der Waals attraction between opposite sides of the cracks. This causes the appearance of new cracks. When the system of cracks has fractal structure, this self-sustaining process leads to the appearance of a finite volume interface between the metal sample and vacuum. This additional volume manifests itself as a swelling and destruction of the sample.
- ПубликацияТолько метаданныеConversion of the Relativistic Electron Energy into a Single Photon during the Interaction with Periodic Heterogeneities in Crystals(2020) Zagaynov, V. A.; Kalashnikov, N. P.; Olchak, A. S.; Загайнов, Валерий Анатольевич; Калашников, Николай Павлович; Ольчак, Андрей Станиславович© 2020, Pleiades Publishing, Ltd.Abstract: In the channeling model, the interaction between relativistic electrons and crystal axes and planes is described traditionally as the motion in an averaged continuous potential. However, real crystal axes and planes consist of individual atoms arranged periodically. The interaction of an electron with periodic heterogeneities is accompanied by the transfer, to the crystal, of strictly quantized portions of the momentum Δ p|| = 2πnћ/d, where n = 1, 2, 3, … and d is the period of the potential heterogeneity arrangement coinciding with that of the crystal lattice in the case of motion along the axis. A photon with the energy (Formula presented.) where E1 is the initial electron energy, is emitted in the case where quantum longitudinal momentum is transferred to the lattice. If E1 ~ 1 GeV or more, a kinetic electron energy of up to 90% transforms into the energy of a single photon during such a process.
- ПубликацияТолько метаданныеStudy of Aerosol Nano- and Submicron Particle Compositions in the Atmosphere of Lake Baikal During Natural Fire Events and Their Interaction with Water Surface(2021) Khodzher, T. V.; Lushnikov, A. A.; Zhamsueva, G. S.; Zayakhanov, A. S.; Zagaynov, V. A.; Chausov, V. D.; Maksimenko, V. V.; Загайнов, Валерий Анатольевич; Максименко, Владимир Викторович© 2021, The Author(s), under exclusive licence to Springer Nature Switzerland AG.In 1996, Lake Baikal was declared a UNESCO World Heritage Site. It contains nearly 25% of the world’s fresh surface water. In recent years, anthropogenic impacts on the ecosystem of Lake Baikal have been increasing due to the development of industry in the region, expansion of the tourist infrastructure, and recreational areas of the coastal zone of the lake. In addition, an increase in the frequency of forest fires has already led to irreversible destructive processes in some areas of the lake. This project investigates the behavior of anthropogenic and natural atmospheric aerosols during forest fires that swept large areas of Siberia and their potential transportation onto Lake Baikal surface. It was found that quite substantial nano-size and submicron aerosol fluxes could reach the water surface and alter ecosystem of the lake. Such outcome is especially important as the amount of pollutants transported through the air–water interface during bush fire events is almost one order of magnitude higher as compared to the fire free scenario.
- ПубликацияТолько метаданныеParticle Generation in the Corona-Discharge Zone(2022) Zagaynov, V. A.; Maksimenko, V. V.; Kalashnikov, N. P.; Agranovski, I. E.; Chausov, V. D.; Zagaynov, D. K.; Загайнов, Валерий Анатольевич; Максименко, Владимир Викторович; Калашников, Николай ПавловичAbstract: Experimental data on particle generation in the corona-discharge zone are obtained. The size distribution of these particles is measured as a function of the discharge parameters. The particle-size spectra are shown to slightly depend on the polarity of the corona point and are only determined by the potential difference and current strength. Various materials such as iron, copper, silver, molybdenum, tungsten, and graphite are the objects studied. The measurements are carried out under normal conditions in various gaseous atmospheres such as air, nitrogen, and argon. A theoretical model for the interaction of corona-discharge plasma with a metal surface is developed. The extraction of atoms from lattice sites supposedly occurs as a result of collective excitations of the electron gas in the metals. This theoretical model is based on the resonant excitation of a plasmon in the surface layer of a metal upon the inelastic scattering of charged particles of a corona discharge on the electrons of a metal sample. It is shown using the electrostatic-imaging method that the Coulomb interaction of a negative-charge-density wave on the surface with a surface ion of the crystal lattice is capable of extraction the ion from the metal. The interaction cross section of this process is estimated. These results are in qualitative agreement with the experimental data, which confirms the validity of the chosen interaction model. © 2022, Pleiades Publishing, Ltd.
- ПубликацияТолько метаданныеComments on Paper by AA Kirsh "Electric Explosion of Aerosols. To the 115th Anniversary of the Tunguska Meteorite"(2023) Zagaynov, V.A.; Загайнов, Валерий Анатольевич
- ПубликацияТолько метаданныеDrastic reduction of thermal conductivity of porous metal due to closed loops on electron trajectories(2025) Maksimenko, V. V.; Krylov, S. Yu.; Zagaynov, V. A.; Agranovski, I. E.; Максименко, Владимир Викторович; Загайнов, Валерий Анатольевич
- ПубликацияОткрытый доступNumerical Study of Bacteria Containing Droplets Aerosolized From Hot Surfaces(2020) Mirskaya, E.; Agranovski, I.; Maksimenko, V.; Zagaynov, V.; Максименко, Владимир Викторович; Загайнов, Валерий Анатольевич© 2020, The Author(s).The process of water droplet interaction with hot surface can result in droplet shooting off the surface. When the water is contaminated with bacteria the interaction causes substantial ambient air contamination due to aerosolization of live or injured microorganisms. This study investigates the behaviour of water droplets interacting with heated surfaces in the film boiling regime. A suggested mathematical model considers droplet shooting off conditions and following airborne droplet evolution due to cooling. The critical size of the droplet capable of taking off was modelled as a function of the wall temperature and droplet size. Following the departure from the hot surface, droplet cooling time mainly depends on the initial droplet radius while the influence of the ambient temperature is marginal. The experimental part of the study was focused on (1) investigation of the size of droplets capable of departing from the hot surface, and (2) evaluation of the influence of cooling time on the survivability of two common environmental bacterial species, Gram-negative Escherichia coli and Gram-positive Bacillus subtilis. Droplets with the sizes of up to one millimetre shooting off the hot surfaces were detected, which correlates with the theoretical results. It was found that, under realistic physical conditions, the process of liquid interaction with hot surface does not ensure an efficient microbial inactivation. It was also shown that the shortest cooling time was associated with higher survival rates of both bacterial strains used in this study. However, even for the longest cooling time of 15 seconds the amount of live bacteria in the aerosolized droplet carrier can be substantially high with recovery rates of approximately 50% for B. subtilis.