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1.
Semiconductors - In this work, we discuss for the first time the principle of rotation in the constant electric field of a conducting particle with participation of the Lorentz force, which ensures... 相似文献
2.
V. N. Petrov V. V. Grebenshikov B. D. Grachev A. S. Kamochkin M. K. Yarmarkin 《Technical Physics Letters》2004,30(2):157-160
A compact electron polarimeter employing the classical Mott scheme has been developed and tested. The device has an efficiency
of about 5.6×10−4, a maximum count rate of 5×105 cps, dimensions 15 cm (diameter) × 25 cm (length), and a working voltage of 40 kV. The polarimeter can operate for a long
time under arbitrary vacuum conditions without maintenance, exhibiting no changes in the main working characteristics, and
obeys all requirements to the electron spin polarization studies on the modern level. 相似文献
3.
A condition for the formation of unstable drops of an ideal liquid in a gas and bubbles in an ideal liquid at a cylindrical nozzle executing longitudinal vibrations is considered. Expressions are derived for the particle size as functions of the parameters of the nozzle and the characteristics of vibration. A necessary and sufficient condition for the formation of a stable particle at the vibrating nozzle is determined. The theoretical and experimental data are in satisfactory agreement. 相似文献
4.
S. E. Grachev 《Cybernetics and Systems Analysis》1994,30(2):292-297
Conclusions The generalized Chebyshev inequalities are of independent value in mathematical analysis, probability theory, and other fields.
Survivability analysis of elements and systems requires specification of functional probability characteristics-distributions
of the current durability point.
Probabilistic calculation of survivability of complex systems can be carried out using logical-probabilistic methods [22,
28], because the probabilistic-physical meaning of the distribution of current durability point at the point x is the failure
probability of an element (a system) given the deterministic level x of the next shock.
The methodology of reliability theory can be updated by focusing on a physical stochastic process, instead of time to failure,
as the cause of failure.
In conclusion, I would like to thank I. A. Ibragimov for discussion of results and some useful comments.
Translated from Kibernetika i Sistemnyi Analiz, No. 2, pp. 159–166, March–April, 1994. 相似文献
5.
6.
7.
Effect of Dilution and Porosity on Self-Propagating High-Temperature Synthesis of Silicon Nitride 总被引:3,自引:0,他引:3
Irene G. Cano Inna P. Borovinskaya Miguel A. Rodriguez Vladimir V. Grachev 《Journal of the American Ceramic Society》2002,85(9):2209-2211
Self-propagating high-temperature synthesis is a very easy and low-cost method to synthesize Si3 N4 . The nitriding of silicon powder takes place in a self-sustained regime under high pressures of nitrogen with dilution of silicon by Si3 N4 . In this work effects of dilution and green-mixture porosity on combustion velocity and phase content of reaction products are studied. Results are compared with previous work of other authors and different behaviors are found. An explanation of these behaviors is given. 相似文献
8.
I. A. Studenikin V. V. Grachev 《International Journal of Self-Propagating High-Temperature Synthesis》2008,17(4):237-241
Silicon oxynitride Si2N2 O was synthesized from a mixture of Si, SiO2, and Si3N4 by infiltrationmediated combustion in nitrogen gas. The chemical/phase composition of product and process parameters (temperature
and burning velocity) were studied upon variation in charge composition and initial pressure of gas reagent. Parameters of
the reaction yielding single-phase Si2N2O have been optimized.
相似文献
9.
Grachev S. P. Zhilyaev A. A. Laryukhin V. B. Novichkov D. E. Galuzin V. A. Simonova E. V. Maiyorov I. V. Skobelev P. O. 《Automation and Remote Control》2021,82(11):1857-1885
Automation and Remote Control - We give the statement of the real-time adaptive enterprise resource management problem and provide examples of contemporary adaptive resource management problems in... 相似文献
10.
L. I. Urbanovich V. A. Goryainov V. V. Sevost'yanov Yu. G. Boev V. M. Niskovskikh A. V. Grachev A. V. Sevost'yanov V. S. Gur'ev 《Journal of Engineering Physics and Thermophysics》1980,39(2):900-905
A method is described and certain results presented of an experimental study of local heat exchange in the forced cooling of metal surfaces heated to high temperatures.Notation
l
distance from nozzle to heated surface
- x, y
horizontal and vertical coordinates in the field of the jet, read from the geometric center of the jet
- V
volumetric flow rate of water through the nozzle
- p
excess pressure of the water in front of the jet
- F0
area of sprayed surface of specimen
- Fc
area of unsprayed surface of working part of specimen
- t
temperature of sprayed surface of specimen
- tw
temperature of the water entering the nozzle
- N, Nc
power required to heat the working part of the specimen to a given temperature with and without the spraying of water onto the surface, respectively
- g
local spraying density
-
local heat-transfer coefficient
Translated from Inzhenerno-Fizicheskii Zhurnal, Vol. 39, No. 2, pp. 315–322, August, 1980. 相似文献