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Generalized Wiedemann - Franz law and temperature jump in space plasmas with ion - acoustic turbulence
Monthly Notices of the Royal Astronomical Society. 2007. Vol. 382. No. 1. P. L63-L66.
In this Letter, the generalized Wiedemann-Franz law for the non-isothermic quasi-neutral plasma with developed ion-acoustic turbulence is proved. This law determines the relationship between electrical and thermal conductivities in a plasma with well-developed ion-acoustic turbulence. The anomalously low thermal conductivity, which leads to the formation of high temperature gradients in the zone of the temperature jump, is explained. Results are used to explain some properties of the solar chromosphere-corona transition region.
Priority areas:
engineering science
Language:
English
Savina O. N., Bespalov P. A., Central European Astrophysical Bulletin 2011 Vol. 35 No. 1 P. 83-91
Within the framework of model calculations the possibility of occurrence of the ion-acoustic oscillation instability in a plasma without current and particle fluxes, but with an anisotropic distribution function, which corresponds to heat flux is shown. The model distribution function was selected taking into account the medium conditions. The increment of ion-acoustic oscillation is investigated ...
Added: December 12, 2012
Bespalov P. A., Savina O. N., Письма в Астрономический журнал 2008 Т. 34 № 5 С. 378-386
The generalized Wiedemann-Franz law for a nonisothermal quasi-neutral plasma with developedion-acoustic turbulence and Coulomb collisions has been proven. The results obtained are used to explain the anomalously low thermal conductivity in the chromosphere-corona transition region of the solar atmosphere. Model temperature distributions in the lower corona and the transition region that correspond to well-known experimental ...
Added: December 12, 2012
Bespalov P. A., Savina O. N., Письма в Астрономический журнал 2009 Т. 35 № 5 С. 382-388
Based on model calculations, we show that ion-acoustic oscillations can be excited by heat fluxes in a plasma. We discuss the probable effect of ion-acoustic oscillations on the formation of temperature gradients at critical heat fluxes. The local critical heat flux in the transition region of the solar atmosphere is close to the well-known experimental ...
Added: December 12, 2012
Ohene Y., Marinov Ilya, de Laulanie L. et al., Applied Physics Letters 2015 Vol. 106 No. 23 P. 1-5
Phase images of biological specimens were obtained by the method of Quadriwave Lateral Shearing Interferometry (QWLSI). The QWLSI technique produces, at high resolution, phase images of the cells having been exposed to a plasma treatment and enables the quantitative analysis of the changes in the surface area of the cells over time. Morphological changes in ...
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Ruderman M.., Petrukhin N., Astronomy and Astrophysics 2017 Vol. 600 No. A122 P. 1-11
The ability of phase mixing to provide efficient damping of Alfvén waves even in weakly dissipative plasmas made it a popular mechanismforexplainingthesolarcoronalheating.Initiallyitwasstudiedintheequilibriumconfigurationswiththestraightmagnetic fieldlinesandtheAlfvénspeedonlyvaryinginthedirectionperpendiculartothemagneticfield.LatertheanalysisoftheAlfvénwave phase mixing was extended in various directions. In particular it was studied in two-dimensional planar magnetic plasma equilibria. Analytical investigation was carried out under the assumption that the wavelength is much smaller ...
Added: May 10, 2017
Bespalov P. A., Savina O.N., Central European Astrophysical Bulletin 2015 Vol. 39 P. 43-50
Special features of the ion-acoustic oscillation instability in the transition region
of a quiet solar atmosphere are examined. A model of electron distribution function,
which corresponds to the heat flux, under condition of absence of a particular beam, is
analyzed. It is shown that the heat flux-related anisotropy of the distribution function is
sufficient for the achievement of the ...
Added: November 26, 2014
М. : Энциклопедия, Инфра-М, 2017
The New Russian Encyclopedia is a fundamental reference publication in 18 volumes that characterizes nature, population, economy, history, science, art, technology and other important aspects. Contains about 60,000 articles, about 30,000 biographies, about 15,000 color illustrations, maps, charts, diagrams, tables. Leaves since 2003. ...
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Blythe D., Haufe S., Müller K. et al., Neuroimage 2014 Vol. 99 No. 1 P. 377-387
Although the long-range temporal correlation (LRTC) of the amplitude fluctuations of neuronal EEG/MEG oscillations is widely acknowledged, the majority of studies to date have been performed in sensor space, disregarding the mixing effects implied by volume conduction and confounding noise. While the effect of mixing on the evaluation of evoked responses and connectivity measures has been ...
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M. : HSE, 2013
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Ruderman M. S., Petrukhin N., Solar Physics 2022 Vol. 297 No. 6 Article 72
In this article we study the effect of a transitional layer in a magnetic tube on the real part
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thin-boundary (TTTB) approximation. First, we calculate the ...
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Pelinovsky E., Choi B. H., Kim K. O. et al., Ocean and Polar Research 2015 Vol. 37 No. 2 P. 91-105
In this paper we investigated the phenomenon of extreme run-up at Babi Island in Indonesia
caused by the 1992 Flores earthquake (Mw = 7.8) using a series of three-dimensional numerical modeling experiments. Simulations were carried out to investigate how much the presence/absence of the coast of Flores affects the generation of the extreme inundation at Babi ...
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Ермоленко Г. В., Proskuryakova L. N., Ермоленко Б. В., Foresight 2017 Vol. 19 No. 5 P. 528-540
Purpose – The purpose of the study is to show the technical potentials of a variety of renewable energy sources in Russia, as well as benefits from their deployment including hydrocarbon savings, emission reduction and lower energy cost. Design/methodology/approach – In the paper, Russia is compared with other countries in terms of actual installed capacity ...
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Zakhodiakin G., Успехи в химии и химической технологии 2014 Т. 28 № 10 (159) С. 97-100
This paper describes an approach to supply chain network optimization for a petrochemical enterprise. The state-task network is used for supply chain representation. A framework for comprehensive economic and environmental assessment based on life cycle assessment is proposed. The software implementation of proposed methodology is described. ...
Added: February 27, 2016
М. : Энциклопедия, Инфра-М, 2017
The New Russian Encyclopedia is a fundamental reference publication in 18 volumes that characterizes nature, population, economy, history, science, art, technology and other important aspects. Contains about 60,000 articles, about 30,000 biographies, about 15,000 color illustrations, maps, charts, diagrams, tables. Leaves since 2003. ...
Added: October 29, 2018
Plusnin J., М. : Научный мир, 2013
The book is a kind of information and methodological handbook on environmental and climate issues. It consists two parts. The first section provides information about the weather and out-climate change. They guide the reader to the problem of the influence climate change on our lives. The second section is special, a step-by-step description of observations ...
Added: February 18, 2013
Maslennikova I., Kovalev V., Eronko O. et al., WIT Transactions on Ecology and The Environment 2014 Vol. 190 P. 551-556
Protection of the environment can be achieved by creating conditions that ensure the complete absence, or at least minimal content, of hazardous substances in industrial waste. Therefore, in production processes where the main and/or additive product is material with mercury content, the prevention of mercury vapor emissions into the atmosphere is an essential prerequisite for ...
Added: March 25, 2015
Novikova E., Russian Journal of Mathematical Physics 2009 Vol. 16 No. 4 P. 518-528
An explicit description of a finite minimal basis of generators is given for the algebra of symmetries of a generic quantum three-frequency resonance oscillator. ...
Added: October 23, 2012
СПб. : Типография ГМА им. адмирала С.О. Макарова, 1993
Added: November 15, 2017
Алексеенко Н. А., Калуцков В. Н., Лошкарева А. Р. et al., Геодезия и картография 2012 № 1 С. 39-45
Описана зимняя экспедиция научно-студенческого общества кафедры картографии и геоинформатики Московского государственного университета имени М. В. Ломоносова в 2011 г., посвященная изучению жизненного пути и научной деятельности М. В. Ломоносова, проходившая на его родине – Холмогорской земле. Отмечено, что историко-биографический материал приобретает высокую значимость, поскольку дает возможность на примере фактов из конкретной биографии обсуждать мировоззренческие вопросы ...
Added: December 22, 2012
Pelinovsky E., Диденкулова И. И., Диденкулов О. И., Известия РАН. Физика атмосферы и океана 2014 Т. 50 № 5 С. 604-611
We study the runup of long solitary waves of different polarities on a beach in the case of composite bottom topography: a plane sloping beach transforms into a region of constant depth. We confirm that nonlinear wave deformation of positive polarity (wave crest) resulting in an increase in the wave steepness leads to a significant ...
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Volkova K., Dagaev N., Киселёв А. С. et al., Журнал высшей нервной деятельности им. И.П. Павлова 2017 Т. 67 № 4 С. 504-520
Brain-computer interfaces find application in a number of different areas and have the potential to be used for research as well as for practical purposes. The clinical use of BCI includes current studies on neurorehabilitation ([Frolov et al., 2013; Ang et al., 2010]), and there is the prospect of using BCI to restore movement and ...
Added: October 19, 2017
Proskuryakova L. N., Юдина О. Н., ТЭК России 2017 № 7 С. 30-32
6–9 июня 2017 года в Пекине (Китай) прошла серия мероприятий и встреч высокого уровня по вопросам энергетического сотрудничества, устойчивого развития, повышения энергоэффективности и развития энергетически чистых технологий.
Ключевым мероприятием энергодиалога стран БРИКС (Бразилия, Россия, Индия, Китай, ЮАР) в 2017 году стала Министерская встреча, которая состоялась в Пекине 7 июня. В центре дискуссии оказались вопросы дальнейшей институционализации ...
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Боброва Е. В., Решетникова В. В., Volkova K. et al., Журнал высшей нервной деятельности им. И.П. Павлова 2017 Т. 67 № 4 С. 485-492
Исследовали обучение управлению системой “Интерфейс мозг-компьютер” (ИМК) с помощью специально разработанного тренинга. Тренинг включал осуществление медленных циклических движений правой и левой рукой (длительность каждого движения соответствовала длительности представлений движений руки при работе с ИМК), представление этих движений, а также спокойное сидение до начала движений. До проведения тренинга и после него осуществлялось управление ИМК. По тесту ...
Added: October 20, 2017