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31.
S. A. Novokreshchenov V. S. Shvydkii V. P. Zhukov Yu. N. Ovchinnikov D. D. Cheremisin 《Russian Journal of Non-Ferrous Metals》2013,54(6):489-492
The formation and motion of gas bubbles in the melt substantially affect the heat exchange and kinetics of chemical transformations when performing the fire refining of copper in the ladle furnace. The variation in the bubble velocity, as well as of the volume and surface of the moving gas bubble over the melt height, is considered in the presented mathematical model. 相似文献
32.
M. S. Smirnov O. V. Ovchinnikov A. N. Latyshev A. M. Smirnova P. V. Novikov M. A. Efimova 《Semiconductors》2009,43(7):852-857
In the AgCl microcrystals with adsorbed methylene blue dye molecules, sensitized anti-Stokes luminescence centers formed as a result of a photostimulated low-temperature (77 K) process are observed. The emission is recorded on excitation of the samples by radiation with the flux density 1014?1015 photon cm?2 s?1 in the spectral range 620–750 nm corresponding to optical absorption in the adsorbed dye molecules and adsorbed Ag1, Ag2, and Ag3 clusters. It is shown that the anti-Stokes luminescence centers formed by photo-stimulation present (adsorbed dye molecule)—(silver subnanocluster) hybrid nanostructures, in which the bonding between the components is weak but sufficient to provide the possibility for two-photon interband transitions that occur due to transfer of the electron’s excitation energy from the dye molecule to the silver cluster with subsequent photoionization of the cluster. 相似文献
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34.
V. I. Lukin E. N. Ioda E. A. Tkachenko L. V. Kotel'nikova A. V. Bazeskin V. V. Ovchinnikov 《Welding International》2013,27(7):535-538
The special features of electron beam welding of pressed strips of the V-1963-strength aluminium alloy of the Al–Zn–Mg–Cu system with a thickness of 40 mm are investigated. The results of tests of the welded joints in static tensile loading, bending, and impact toughness of the weld metal are presented. It is shown that the strength of the welded joints equals 0.7–0.8 of the strength of the parent material. The results of investigations of the macro- and microstructure of the welded joints are generalized and it is shown that the welded joints are characterized by the formation of an equiaxed fine-grained structure with the grain size of 5–10 μm. 相似文献
35.
B. M. Lapshin A. L. Ovchinnikov A. S. Chekalin 《Russian Journal of Nondestructive Testing》2011,47(10):710-717
An algorithm for filtering acoustic-emission signals and a technique for measuring the velocity of sound during searches for
leaks in pipelines of heat networks are considered. The results of experimental studies are presented. 相似文献
36.
37.
In mice hetero- and homozygotic in relation to the diabetic gene db, it was shown that the regulation of the pancreatic endocrine function by hypothalamus is mediated at least by two mechanisms: neurohumoral one connected with hormone secretion by paraventricular and supraoptical nuclei and by a neuroconductivity mechanism connected with the ventromedial nucleus and lateral hypothalamic area. 相似文献
38.
39.
P. F. Ovchinnikov P. S. Kropivyanskii N. V. Mikhailov 《Journal of Engineering Physics and Thermophysics》1971,21(4):1225-1229
Two-termed formulas used in calculating the rheological curves of effective viscosity as a function of shear stress in coagulative thixotropic systems are compared with each other.Translated from Inzhenerno-Fizicheskii Zhurnal, Vol. 21, No. 4, pp. 605–610, October, 1971. 相似文献
40.