Zobrazeno 1 - 10
of 72
pro vyhledávání: '"B. V. Ivanov"'
Publikováno v:
Лëд и снег, Vol 63, Iss 2, Pp 214-224 (2023)
The intra-annual variability of the surface ice ablation on the 5.5 km2 Aldegondabreen glacier (Spitsbergen Island, Barentsburg area) is presented. The ice ablation was measured during five seasons (2018–2022) at the two stakes, installed in the lo
Externí odkaz:
https://doaj.org/article/fded67e961664519ae7371598defb161
Autor:
B. V. Ivanov
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 81, Iss 3, Pp 1-8 (2021)
Abstract It is shown that the expressions for the tangential pressure, the anisotropy factor and the radial pressure in the Einstein–Maxwell equations may serve as generating functions for charged stellar models. The latter can incorporate an equat
Externí odkaz:
https://doaj.org/article/420dab5170444083bebe56538fb6f2c0
Publikováno v:
Лëд и снег, Vol 61, Iss 1, Pp 128-136 (2021)
A comparative analysis of inter-annual changes in ice coverage and time scales of its variability in the waters surrounding the Svalbard and Franz Josef Land archipelagos has been performed. The analysis was carried out for the selected quasi-homogen
Externí odkaz:
https://doaj.org/article/210200128fda44a49939384fd3eab298
Autor:
B. V. Ivanov
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 79, Iss 6, Pp 1-7 (2019)
Abstract A rather general form of spherical fluid collapse is formulated. The fluid is anisotropic, has shear, bulk and shear viscosities and is charged. It radiates energy through a heat flow or null radiation. The exterior solution is the charged V
Externí odkaz:
https://doaj.org/article/63f3d288898d47b691a9eb61d197a02f
Autor:
B. V. Ivanov
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 79, Iss 3, Pp 1-6 (2019)
Abstract In this paper we give a generating function for solutions of the type of collapse mentioned in the title. It satisfies a simple Riccati equation, derived from a formula, which holds in the interior of the star. The generating function is uni
Externí odkaz:
https://doaj.org/article/9fe663a6d279438db7efbb58fb27cee9
Autor:
B. V. Ivanov
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 78, Iss 4, Pp 1-9 (2018)
Abstract A physically realistic stellar model with a simple expression for the energy density and conformally flat interior is found. The relations between the different conditions are used without graphic proofs. It may represent a real pulsar.
Externí odkaz:
https://doaj.org/article/26007a06529d4b81bb798f9da5b98e0d
Autor:
B. V. Ivanov
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 77, Iss 11, Pp 1-12 (2017)
Abstract A simple classification is given of the anisotropic relativistic star models, resembling the one of charged isotropic solutions. On the ground of this database, and taking into account the conditions for physically realistic star models, a m
Externí odkaz:
https://doaj.org/article/3b839373325e41299fc6ca211416b9a2
Publikováno v:
Вестник Самарского университета: Аэрокосмическая техника, технологии и машиностроение, Vol 16, Iss 1, Pp 42-50 (2017)
The geographic location of the Russian Federation determines regional apartness of the Arctic and Far East territories which are mostly isolated. The necessity of development of the Russian North Polar regions calls for the development of transport i
Externí odkaz:
https://doaj.org/article/3b0920d109024b099f38ecec862620a9
Autor:
P. N. Svyashchennikov, A. V. Urazgildeeva, Y. N. Kurochkin, B. V. Ivanov, K. V. Chistyakov, D. Divin, S. Hudson
Publikováno v:
Лëд и снег, Vol 55, Iss 3, Pp 67-72 (2015)
Data on spectral composition of shortwave radiation that is reflected from snow and penetrates deep into the snow cover obtained near the Barentsburg settlement (Svalbard) are discussed in the paper. Measurements were made by the use of the spectral
Externí odkaz:
https://doaj.org/article/a906e9fb543f4c21898f101723f799ad
Autor:
A. V. Afanasiev, J. A. Demin, B. V. Ivanov, V. A. Ilin, V. V. Luchinin, K. A. Serguibchev, A. A. Smirnov, A. F. Kardo-Sysoev
Publikováno v:
Известия высших учебных заведений России: Радиоэлектроника, Vol 0, Iss 3, Pp 21-24 (2015)
Experimental results of research of switching characteristics of high-voltage carbide-silicon switchboards on the basis of drift diodes with sharp restoration (DDSR) and the generator of nanosecond voltage impulses developed on their basis with a meg
Externí odkaz:
https://doaj.org/article/33f5f17b158d43ee905a60a2512ae550