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排序方式: 共有877条查询结果,搜索用时 31 毫秒
1.
Kovchavtsev A. P. Aksenov M. S. Nastov’yak A. E. Valisheva N. A. Gorshkov D. V. Sidorov G. Yu. Dmitriev D. V. 《Technical Physics Letters》2020,46(5):469-472
Technical Physics Letters - The C–V characteristics of Au/Al2O3/In0.52Al0.48As and Au/SiO2/In0.52Al0.48As metal–insulator–semiconductor structures have been studied. It has been... 相似文献
2.
In the paper, a model typical for contact situations of automotive brakes is established based on the method of movable cellular automata. The processes taking place at local contacts in an automotive brake system are analysed. Based on microscopic and micro-analytical observations, the following contact situations were simulated: (i) a couple of ferritic steel against pearlitic steel, both covered by an oxide layer mixed with graphite nanoparticles and (ii) the same situation but without oxide layers. The results of calculated mean coefficients of friction of the oxide-on-oxide contact correspond well to expected values for a real braking system, whereas steel-on-steel contact are twice as high. This allows one to make some conclusions; for example, oxide formation will take place more quickly than friction layer elimination, and finally this is responsible for the stabilisation of the coefficient of friction. 相似文献
3.
The behavior of hydrogen in solids under the action of intense ionizing radiation is of importance in solving numerous problems of materials science for the nuclear and thermonuclear power industry, spacecraft engineering, hydrogen energetics, and microelectronics. Experimental results are presented that provide evidence of the radiation-induced yield of hydrogen from single crystal silicon bombarded with 710-MeV bismuth ions. 相似文献
4.
The physical preconditions are considered for the temperature of a body to influence the force of gravity experienced by it. The results are given of experiments on weighing metal rods heated by ultrasound which confirm a dependence of the weight of the rods on their temperature. 相似文献
5.
6.
V. P. Deniskin A. M. Dmitriev V. I. Nalivaev I. I. Fedik P. M. Gavrilov N. A. Piskunova N. N. Khrennikov 《Atomic Energy》2007,103(3):675-680
The salient features of using a solid substance to cool the core of a nuclear reactor and the associated advantages and limitations
are examined. Conceptual proposals concerning the core design and the arrangement of the in-reactor space of a high-temperature
nuclear reactor with a solid coolant are presented. Evaluated data and some results for a model reactor are presented.
__________
Translated from Atomnaya énergiya, Vol. 103, No. 3, pp. 156–161, September, 2007. 相似文献
7.
A. M. Trushin E. A. Dmitriev V. V. Akimov 《Theoretical Foundations of Chemical Engineering》2008,42(3):264-270
Gas bubbling on sieve and grid trays is considered. From the energy balance for the bubbled layer, a theoretical equation is derived for calculating the average gas content of the liquid on the trays of a bubble column. The data calculated using this equation are compared with experimental data available on the average gas content of the liquid on sieve and grid trays for water-gas and organic liquid-gas systems. The equation is compared with some empirical and theoretical relationships. 相似文献
8.
A. F. Ginevskii A. S. Dmitriev D. A. Ovechkin 《Journal of Engineering Physics and Thermophysics》1991,60(4):501-505
Stability has been examined for an ordered chain of monodisperse droplets under vacuum, which interact one with another via the evaporating molecules.Translated from Inzhenerno-fizicheskii Zhurnal, Vol. 60, No. 4, pp. 656–660, April, 1991. 相似文献
9.
Results are presented of experimental spectropolarimetric investigations of multimode fiber-optic waveguides with core diameters
between 65 and 404 μm in the infrared (0.8, 1.3, and 1.55 μm). A theoretical explanation is proposed for the results.
Pis’ma Zh. Tekh. Fiz. 24, 75–80 (December 12, 1998) 相似文献
10.
V. A. Ashikhmen V. G. Buchatskii N. V. Dmitriev L. I. Malyshev 《Power Technology and Engineering (formerly Hydrotechnical Construction)》1989,23(1):47-53
1. | The side curtains as necessary cutoff elements of the al-Qadisiyah hydro development were made in an optimal design variant, on time, and with a high quality. A considerable technical and economic effect was obtained by eliminating excessive volumes of works specified by the original design as a result of a combined analysis of the data of engineering surveys, investigations of experimental grouting works, and optimization of the grouting technology. |
2. | The index of unit cement absorption in the control holes used as the criterion of sufficiency of grouting on the side curtains should be used everywhere where the purpose of grouting works is to detect and eliminate large cavities and fissures. |
3. | Grouting works on elimination of karst cavities and large fissures, being in essence infill grouting, require the development of an industrial technology of the works with the use of considerable volumes of grouts (concretes) and use of a large number of machines and mechanisms (concrete plants, mixers, concrete pumps, etc.). |