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81.
Pshenichnyuk SA Lomakin GS Fokin AI Pshenichnyuk IA Asfandiarov NL 《Rapid communications in mass spectrometry : RCM》2006,20(3):383-386
Experimental data previously published from this laboratory (Asfandiarov NL, Pshenichnyuk SA, Fokin AI, Nafikova EP. Chem. Phys. 2004; 298: 263), on the temperature dependence of the mean autodetachment lifetime of the p-benzoquinone molecular radical anion, were analyzed in the framework of a simple statistical model. This model is a simplification of the well-known semiempirical approach elaborated by Christophorou et al. (Christophorou LG, Hadjiantoniou A, Carter JG. J. Chem. Soc., Faraday Trans. II 1973; 69: 1722). Evaluation of the vibrational energy storage of the target molecule and anion was made in a quantum approximation following a published procedure (Matejcik S, M?rk TD, Spanel P, Smith D, Jaffke T, Illenberger E. J. Chem. Phys. 1994; 102: 2516). The results obtained are in reasonable agreement with the experimental data. 相似文献
82.
Results of the experimental study of vibration stabilization of the process of postcritical deformation during the tensile testing of solid cylindrical specimens made of 20 and 40Cr structural steels under additional vibrations are presented. The vibrations are implemented using cyclic torsion of the specimens at a small amplitude and a frequency of 10–30 Hz. 相似文献
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P. N. Brevnov G. R. Kirsankina A. S. Zabolotnov V. G. Krasheninnikov L. A. Novokshonova T. V. Monakhova S. M. Lomakin A. A. Berlin 《Polymer Science Series D》2017,10(4):330-333
The impact of graphite nanoslabs on thermal oxidation of polyethylene is studied via the methods of dynamic thermogravimetry and isothermal oxidation. Graphite nanoslabs are shown to exert an inhibiting effect on thermal oxidation of polyethylene, which leads to an increase in the induction period and in the oxygen-absorption rate. That there is an abnormal effect of the nanofiller content on the resistance to thermal oxidative destruction of composites, mainly for diffusion reasons, is established as well. 相似文献
87.
A. V. Bychkova M. A. Rosenfeld V. B. Leonova O. N. Sorokina S. M. Lomakin A. L. Kovarski 《Colloid Journal》2013,75(1):7-13
A novel universal approach to cross-linking of protein macromolecules on the surface of magnetite nanoparticles has been developed. The approach is based on protein liability to free-radical modification, leading to the formation of intermolecular covalent cross-links. Free radicals are locally generated on the surface of nanoparticles. Stable coatings of serum albumin 3 nm thick are formed on the surface of magnetite nanoparticles. Using a set of physicochemical methods, it has been proven that stable coatings composed of protein macromolecules are formed around individual nanoparticles. The presence of reactive groups in the protein structure makes it possible to perform subsequent modification of the surface layers-in particular, to graft nonprotein drugs. The approach developed can be used to create superfine systems with desired surface properties for targeted delivery of drugs and biologically active substances. 相似文献
88.
A mathematical model of carbonaceous feedstock pyrolysis in a countercurrent tubular reactor was proposed. It was shown that the pyrolysis in a tubular reactor in which porous carbonaceous feedstock is heated in a countercurrent flow of a heated gas can be highly efficient. 相似文献
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Heterogeneous hydrogenation of the styrene and stilbene chromium tricarbonyl complexes by molecular hydrogen on skeletal nickel
and palladium on carbon as catalysts was studied. As compared to styrene and stilbene, their arene chromium tricarbonyl analogs
are hydrogenated considerably more slowly, which is related, most likely, to strong adsorption of the π-complexes on the catalyst
surface. For the homogeneous hydrogenation of these complexes using a H2PtCl6-SnCl2-LiBr system, styrene and η6-styrene chromium tricarbonyl are reduced with a high rate, whereas stilbene and its chromium tricarbonyl complex are hydrogenated
very slowly. A possibility of reduction of the unsaturated arene chromium tricarbonyl complexes by sodium borohydride in the
presence of cobalt(II) chloride as a catalyst was shown.
Published in Russian in Izvestiya Akademii Nauk. Seriya Khimicheskaya, No. 1, pp. 44–47, January, 2007. 相似文献