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排序方式: 共有151条查询结果,搜索用时 20 毫秒
11.
M. -R. A. Magomedov Sh. M. Ismailov Dzh. Kh. Magomedova P. P. Khokhlachev 《Semiconductors》2000,34(6):662-664
Through deposition of CuInSe2 films on CdS substrates in a quasi-closed-circuit “hot-wall” reactor, p-n CuInSe2/CdS heterostructures were obtained. The thermoelectric power, current-voltage characteristics, and photosensitivity spectra of the structures were investigated. 相似文献
12.
13.
Methods for the determination of the unknown velocity of the propagation of shear US waves and the unknown thickness of a test object were considered. Two antenna arrays working in the double-scanning mode, where echo signals are recorded, which were emitted and received by all pairs of antenna-array elements, were suggested. Antenna arrays on prisms were mounted on the test-object surface towards each other. An algorithm for the treatment of measured echo signals was designed using a method that is similar to the least-squares method. The use of the algorithm enables one to simultaneously determine the sound velocity and thickness of a test object with plane-parallel boundaries with an exactness greater than 0.5%. In this article, the factors were studied that affect the exactness of measurements and methods of their elimination or minimization. The results of numerical experiments and the use of the method on three samples relative to measurements using an IN-5101A instrument are given. 相似文献
14.
Z. Kh. Makhmatkulova R. I. Ismailov S. S. Negmatov M. A. Askarov 《Fibre Chemistry》2011,42(6):376-378
Fibre-forming copolymers of acrylonitrile and a monomeric quaternary ammonium salt, β-methacryloylhydroxyethyl-(N-dimethyl,methylene)ammonium
iodide, were obtained by wet spinning and their physicomechanical and structural properties were investigated. It was found
that the modified fibres have a set of valuable properties in comparison to the industrial fibre Nitron. 相似文献
15.
Kh. M. Iliev Z. M. Saparniyazova K. A. Ismailov O. E. Sattarov S. Nigmonkhadzhaev 《Surface Engineering and Applied Electrochemistry》2011,47(5):385-387
Based on infrared microscopic studies, we show that clusters of impurity nickel atoms are uniformly distributed over the entire
volume of the silicon crystal; by varying the density of the clusters in silicon exposed to γ-radiation, it is possible to
control the concentration of the electroactive atoms and the structure of the nickel clusters. It is shown that the presence
of clusters in the lattice significantly increases the radiation resistance of the silicon. 相似文献
16.
Kh. A. Adigezelova M. I. Murguzov Sh. S. Ismailov O. M. Gasanov 《Inorganic Materials》2011,47(1):16-17
The thermal conductivity of Sn1 − x
Nd
x
S (x = 0, 0.001, 0.002) single crystals has been measured in the temperature range 80–840 K. The results have been used to evaluate
the electronic and lattice components of the thermal conductivity. Both the electronic and lattice components are shown to
decrease with increasing temperature and to increase with neodymium content. 相似文献
17.
Kh. Kh. Ismailov Zh. Zhanabergenov Sh. A. Mirsagatov S. Zh. Karazhanov 《Semiconductors》2006,40(2):180-182
The capacitance-voltage characteristic of the MOS-structure based on the coarse-grained p-CdTe film is studied. The nonmonotonici character of the characteristic is attributed to the recharging of deep acceptor levels at the semiconductor-oxide interface and by the variation in the degree of compensation of surface states. 相似文献
18.
R Coninx GE Pfyffer C Mathieu D Savina M Debacker F Jafarov I Jabrailov A Ismailov F Mirzoev R de Haller F Portaels 《Canadian Metallurgical Quarterly》1998,316(7142):1423-1425
Tuberculosis is a significant health problem in Azerbaijan. In prisons, this problem is compounded by overcrowding, poor general health, a high representation of risk groups, late case finding, and incomplete treatments. The present study investigated the extent of drug resistance at the Central Penitentiary Hospital in Baku--the country's only treatment center for prisoners with tuberculosis. This International Committee of the Red Cross program, established in 1995, uses the directly observed treatment, short course (DOTS) strategy. Sputum samples were collected from two groups of prisoners: 1) 28 patients who failed to respond, clinically or bacteriologically, after a minimum of 8 weeks to the treatment regimen recommended by the World Health Organization and 2) 38 patients consecutively enrolled over a 4-week period from whom sputum was taken before the start of treatment. Mycobacterium tuberculosis was isolated from all 66 sputum specimens. In the first group, 25 strains (98%) were multidrug resistant (to rifampicin and isoniazid). Such resistance occurred in all new cases and 14 (82%) of the 17 failure or relapse cases. In the second group, 9 strains (24%) were multidrug resistant and only 12 (32%) were fully susceptible. This resistance was found in 3 strains (15%) among the 20 new cases and in 6 strains (33%) among the 18 cases of treatment failure or relapse. These findings suggest that prisoners may have an important future role in the transmission of tuberculosis, especially multidrug resistant forms, in the former Soviet Union. 相似文献
19.
The phase compositions of films produced by coevaporation and sequential evaporation of Ag, Ga, and S have been determined. The phases identified in the films grown at room temperature are Ag2S, GaS, Ga2S3, and AgGaS2. The kinetics of phase transformations in thin amorphous AgGaS2 films have been studied by dynamic electron diffraction. The dimensionality of growth during amorphous AgGaS2 crystallization and the activation energies for nucleation and crystallite growth have been evaluated. 相似文献
20.