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51.
Aleksandrina S. Volobueva Olga I. Yarovaya Marina V. Kireeva Sophia S. Borisevich Kseniya S. Kovaleva Iliya Ya. Mainagashev Yuri V. Gatilov Margarita G. Ilyina Vladimir V. Zarubaev Nariman F. Salakhutdinov 《Molecules (Basel, Switzerland)》2021,26(22)
A number of framework amides with a ginsenol backbone have been synthesized using the Ritter reaction. We named the acetamide as Ginsamide. A method was developed for the synthesis of the corresponding amine and thioacetamide. The new compounds revealed a high activity against H1N1 influenza, which was confirmed using an animal model. Biological experiments were performed to determine the mechanism of action of the new agents, a ginsamide-resistant strain of influenza virus was obtained, and the pathogenicity of the resistant strain and the control strain was studied. It was shown that the emergence of resistance to Ginsamide was accompanied by a reduction in the pathogenicity of the influenza virus. 相似文献
52.
O. V. Yarovaya U. L. Mostovaya N. V. Batynkova N. N. Gavrilova K. I. Kienskaya V. V. Nazarov 《Colloid Journal》2012,74(3):401-406
The effect of the synthesis conditions of aqueous dispersions of oxygen-containing lanthanum compounds on the size, shape, and phase composition of nanoparticles is studied. It is established that the hydrolysis of lanthanum nitrate at the boiling point of a solution affords sols with a narrower particle size distribution and a higher degree of particle crystallinity. The ranges of [OH?]/[La3+] concentration ratios are determined within which aggregatively stable aqueous dispersions of oxygen-containing lanthanum compounds can be synthesized. 相似文献
53.
We study the groups for which the derived subgroups of all proper subgroups are Chernikov subgroups under condition that they
possess a normal system whose factors are locally graduated. 相似文献
54.
V. S. Rudnev T. P. Yarovaya V. S. Egorkin S. L. Sinebryukhov S. V. Gnedenkov 《Russian Journal of Applied Chemistry》2010,83(4):664-670
Effect of the component concentration of an orthophosphate-tetraborate aqueous electrolyte on the thickness, composition,
surface structure, and protective properties of coatings deposited from this electrolyte was studied. 相似文献
55.
56.
A. V. Yarovaya 《International Applied Mechanics》2006,42(2):206-213
The thermoelastic bending of a circular light-core sandwich plate on a deformable foundation is examined. To describe the
kinematics of the plate with asymmetric thickness, the hypothesis of broken normal is adopted. The reaction of the foundation
is described by Winkler’s model. The thermomechanical load is local and symmetric. The system of equilibrium equations is
derived and solved exactly. Numerical results for three-layer metal-polymer plate are presented
__________
Translated from Prikladnaya Mekhanika, Vol. 42, No. 2, pp. 96–103, February 2006. 相似文献
57.
Y.S. Lipatov T.D. Ignatova L.F. Kosyanchuk N.V. Yarovaya 《European Polymer Journal》2006,42(11):3102-3107
Blends of linear polyurethane and poly(methyl methacrylate) were obtained in situ in the course of simultaneously proceeding reactions of polymerization and polyaddition. The effect of filler nanoparticles on the thermodynamic properties of the systems was investigated. Introduction of filler into the monomer mixture before curing increases the compatibility of final systems, as follows from diminishing thermodynamic interaction parameters. The reverse correlation has been established between the interaction parameter and the fraction of an interfacial region between two phases, its origin being the result of incomplete phase separation. Introducing filler into the reaction system determines simultaneously the increasing compatibility and increasing fraction of an interfacial region, i.e., prevents phase separation. Both effects are due to increasing of the interaction between two polymeric components at the interface with solid and changing conditions of incomplete phase separation in the course of reaction. 相似文献
58.
N. V. Babkina Yu. S. Lipatov T. T. Alekseeva N. V. Yarovaya 《Polymer Science Series A》2009,51(8):904-911
Structural and phase transformations in the course of the multistage physical aging of semi-inter-penetrating polymer networks
based on crosslinked polyurethane and linear polystyrene are studied. Dynamic mechanical and thermophysical studies make it
possible to assume that, as a result of the physical aging, a heterogeneous polymer system experiences structural rearrangements
and the fraction of the inter-facial region increases. 相似文献
59.
V. S. Rudnev A. Yu. Ustinov A. A. Vaganov-Vil’kins P. M. Nedozorov T. P. Yarovaya 《Russian Journal of Physical Chemistry A, Focus on Chemistry》2013,87(6):1021-1026
Stable aqueous electrolyte emulsions with negatively charged micelles containing dispersed particles of polytetrafluoroethylene (PTFE) or graphite are obtained using siloxane-acrylate emulsion as an emulsifier. The oxide coatings formed in such electrolytes contain carbon, polytetrafluoroethylene, or graphite. The coatings with PTFE particles are similar to monolithic polytetrafluoroethylene with respect to its hydrophobic characteristics. According to X-ray photoelectron spectroscopy data, the surface of the formed coatings predominantly contains aliphatic carbon (C-C and C-H bonds) and some fraction of oxidized (or, in the case of PTFE-containing electrolytes, fluorinated) carbon. 相似文献
60.
Yarovaya O. I. Salomatina O. V. Korchagina D. V. Polovinka M. P. Barkhash V. A. 《Russian Journal of Organic Chemistry》2002,38(11):1594-1605
The transformations of 6,7-epoxy derivatives of widely spread in the nature unsaturated aldehydes, citral and citronellal, in various acidic media both under conditions of homogeneous and heterogeneous catalysis were investigated. A number of previously unknown products belonging to different classes of organic compounds was obtained. Probable mechanisms of the products formation are discussed. 相似文献