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81.
82.
A. A. Andreev V. N. Dakhno V. M. Savin B. N. Yudaev 《Journal of Engineering Physics and Thermophysics》1970,18(4):426-431
The boundary conditions are determined experimentally for a system of differential equations describing heat transfer in a region of gradient flow when a plane turbulent jet is incident on a flat plate normal to the flow. The analytical solution is compared with direct measurements.Translated from Inzhenerno-Fizicheskii Zhurnal, Vo. 18, No. 4, pp. 631–637, April, 1972. 相似文献
83.
Translated from Izmeritel'naya Tekhnika, No. 11, pp. 12–14, November, 1990. 相似文献
84.
P. P. Poluektov S. S. Shirokov O. V. Kholopova M. A. Chernikov S. K. Savin E. V. Shirokova 《Radiochemistry》2014,56(3):308-310
A pulsed decontamination apparatus was developed and tested. Its operation is based on the action of oscillating liquid flow on contaminated objects. It ensures efficient decontamination of items and parts of complex geometry with deep contaminations and with contaminations blocked by corrosion products. 相似文献
85.
86.
A. V. Savin A. A. Moiseev A. A. Yatsenko 《Mathematical Models and Computer Simulations》2017,9(3):369-376
The statistical properties of dense random packings of ellipsoidal bodies in cylindrical vessels created under the effect of the gravity force are investigated by the numerical method developed from the equations of mechanics of a rigid body. The body-to-body and body-to-wall interaction is described by elastic forces. It has been found that the influence of the gravity force in the presence of walls specifies the statistically meaningful anisotropy of the orientation of ellipsoids. According to the method of the formation of a packing and the spatial separation of bodies by size can be found; this causes a local narrowing of the size spectrum. The method is naturally generalized by including friction forces, arbitrary force fields, and walls of an arbitrary shape. 相似文献
87.
This paper examines the effect of high-temperature doping conditions on Cr2+ diffusion in polycrystalline zinc selenide. The activation energy for the diffusion process is determined in the temperature range 900–1100°C for annealing in an argon atmosphere and zinc vapor, and the mechanism responsible for the enhanced chromium diffusion in the case of doping in zinc vapor is discussed. 相似文献
88.
S. A. Rodin V. B. Ikonnikov D. V. Savin E. M. Gavrishchuk 《Inorganic Materials》2017,53(11):1115-1119
We have studied the effect of high-temperature diffusion doping with chromium (Cr2+) ions on the microstructure of polycrystalline zinc selenide (ZnSe). We have determined energy and kinetic characteristics of solid-state recrystallization in ZnSe and assessed the effect of chromium concentration on the rate of grain growth during the doping process. 相似文献
89.
C. Tuniz R.K. Moniot W. Savin S. Vajda T.H. Kruse D.K. Pal G.F. Herzog M.J. Carr 《Nuclear instruments & methods in physics research. Section B, Beam interactions with materials and atoms》1984,5(2):321-325
Our limit of detection for 10Be by accelerator mass spectrometry has been lowered to a few million atoms by the installation of a Wien filter which screens out co-transmitted 9Be. Analyses of six Central American basalts gave 10Be contents ranging from 1 × 106 to 60 × 106 atom/g. The sample richest in 10Be has been contaminated by sediments. The other samples have 10Be contents in the range reported in the literature by Brown and co-workers. 相似文献
90.
Leonid Dubrovinsky Natalia Dubrovinskaia Innokenty Kantor Catherine McCammon Wilson Crichton Vadim Urusov 《Journal of Alloys and Compounds》2005,390(1-2):41-45
We have heated ferropericlase (Mg0.80Fe0.20)O to temperatures of over 2300 K at pressures of above 100 GPa to investigate the stability of the solid solution at elevated P, T conditions. The in situ X-ray study in laser-heated diamond anvil cells, as well as X-ray powder diffraction and chemical analysis of recovered samples, show that ferropericlase dissociates to magnesium oxide and ferrous oxide rich components. We demonstrate the importance of the combination of different analytical techniques for studies of solid-state chemical processes at extreme conditions. 相似文献