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Translated from Zhurnal Prikladnoi Spektroskopii, Vol. 55, No. 5, pp. 881–884, November, 1991. 相似文献
3.
We revealed the changes in the γ-luminescence spectra under the influence of a thermal radiation field on high-purity alkali-silicate
glasses (I) and those with addition of Fe3+ ions (II). We explain the obtained results within the framework of the L-model of edge absorption and electron-hole recombination
processes.
Samarkand State University, 15, Universitetskii Bul., Samarkand, 703004, Republic of Uzbekistan. Translated from Zhurnal Prikladnoi
Spektroskopii, Vol. 65, No. 3, pp. 453–455, May–June, 1998. 相似文献
4.
Ilyas S. Nizamov Georgiy G. Shumatbaev Ilnar D. Nizamov Yevgeniy N. Nikitin Timur G. Belov Marina P. Shulaeva 《Phosphorus, sulfur, and silicon and the related elements》2021,196(1):86-92
Abstract New chiral methylbenzylammonium salts of aryldithiophosphonic acids containing glucofuranose, allofuranose, and galactopyranose diacetonide substituents were obtained using (S)-(–)-α-methylbenzylamine, (R)-(+)-α-methylbenzylamine, and (R,S)-(±)-α-methylbenzylamine. Salts obtained possess antimicrobial activity. 相似文献
5.
Balandina A Kalinin A Mamedov V Figadère B Latypov S 《Magnetic resonance in chemistry : MRC》2005,43(10):816-828
(1)H, (13)C and (15)N NMR chemical shifts for a variety of novel quinoxalines were determined by different 2D methods and were calculated using the GIAO DFT approach. Comparison with experimental data shows good correlations in the case of (1)H, (13)C and (15)N chemical shifts. Different combinations of basis sets were tested. In non-polar solvents quinoxalines exist as dimers owing to strong hydrogen bonding. Calculations for dimers improve the correlation between experiment and theory. Additive empirical methods for estimating chemical shifts have drawbacks and have to be used with a great care for this type of compound. 相似文献
6.
Vladimir Alfonsov Elvira Batyeva Il'Yas Nizamov 《Phosphorus, sulfur, and silicon and the related elements》2013,188(1):381-382
The problems of synthesis and transformations of new organoelement reagents containing sulfur, silicon and phosphorus (S-P-O-Si, P(S)-S-Si) are discussed. 相似文献
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Il'yas S. Nizamov Alexey E. Popovich Elvira S. Batyeva Nail M. Azancheev Vladimir A. Al'fonsov 《Phosphorus, sulfur, and silicon and the related elements》2013,188(1):167-178
Abstract The reactions of tetraphosphorus decasulfide and Lawesson's reagent with tetra-, tri- and dialkoxysilanes were studied. On the basis of these reactions, new S-silyl esters of phosphorus(V) thioacids have been prepared. The prepared compounds were identified by IR, 1H, and 31P NMR and mass spectra as well as elemental analyses. 相似文献