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31.
Physics of the Solid State - A dynamic matrix of rare-gas crystals is constructed within the model of deformable and polarizable atoms based on the nonempirical short-range repulsion potential... 相似文献
32.
Identification of peroxo groups in supramolecular layered structures as probed by Raman spectroscopy
T. A. Tripol’skaya I. V. Pokhabova P. V. Prikhodchenko G. P. Pilipenko E. A. Legurova N. A. Chumaevskii 《Russian Journal of Inorganic Chemistry》2009,54(3):464-466
Peroxide-containing supramolecular structures prepared by reacting lithium aluminum layered double hydroxides (Li-Al LDHs)
with concentrated hydrogen peroxide solutions were characterized by Raman spectroscopy. These compounds were formulated as
[LiAl2(OH)6](OH) · H2O2 · H2O(I) and [LiAl2(OH)6](OOH) · H2O2 · H2O(II). The frequencies 830 and 849 cm−1 in the spectra of compounds I and II were assigned to O—C stretching vibrations in two nonequivalent peroxo groups. The band
at 866 cm−1 in compound II was assigned to O—O vibrations in the hydroperoxo group (OOH)−. Proceeding from calculated strength factors, we inferred that the O—O bond in the hydroperoxo group of compound II is stronger
than in the H2O2 solvating group.
Original Russian Text ? T.A. Tripol’skaya, I.V. Pokhabova, P.V. Prikhodchenko, G.P. Pilipenko, E.A. Legurova, N.A. Chumaevskii,
2009, published in Zhurnal Neorganicheskoi Khimii, 2009, Vol. 54, No. 3, pp. 513–515. 相似文献
33.
MG Uchuskin AS Pilipenko OV Serdyuk IV Trushkov AV Butin 《Organic & biomolecular chemistry》2012,10(36):7262-7265
Indolo[3,2-c]quinolines are pharmacologically attractive class of heterocyclic compounds. The method of their synthesis, based on transformation of furfural, which is a large-scale product of treatment of biomass including agricultural and forestry wastes, has been developed. This method was utilized for the total synthesis of antimalarial alkaloid isocryptolepine and its derivatives. 相似文献
34.
O. S. Pilipenko L. F. Atyaksheva E. V. Kryuchkova E. S. Chukhrai 《Russian Journal of Physical Chemistry A, Focus on Chemistry》2012,86(8):1301-1307
It is established that the adsorption of lysozyme on silochrome proceeds by a two-stage scheme that includes equilibrium adsorption and irreversible multipoint binding, complicated by the association of surface protein. It is shown that, a substantial change in the mechanism of adsorption occurs in dependence on pH. The density of the monolayer increases with increasing pH in the range of 6?C10. The rate constants of adsorption and sites occupied by a molecule of protein at different pH values are calculated. 相似文献
35.
Effect of metal corrosion inhibitors, N-acetylmethylpyridium salts, on the hydrogen charging of 08 KP steel and changes in its plasticity upon its etching in solutions
of 3 M sulfuric acid. Inhibitors more strongly diminishing the fraction of hydrogen atoms diffusing into the steel and preserving
or raising its plasticity as compared with the shipment level were found. 相似文献
36.
37.
V. Yu. Denisov N. A. Pilipenko 《Bulletin of the Russian Academy of Sciences: Physics》2010,74(6):782-785
The fusion/capture cross sections between various deformed nuclei are calculated. It is shown that quadrupole and hexadecapole
deformations of heavy nuclei are important for evaluating the barrier height, capture well depth, and fusion/capture cross
sections of heavy nuclei. It is found that calculations of the capture cross section of two heavy deformed nuclei must be
performed with averaging over all possible mutual orientations of the colliding nuclei. 相似文献
38.
Experimental investigations show that the presence in a fluid of fibers and rigid asymmetric particles leads to a greater stability of flow in tubes and lowers the turbulent frictional resistance in a certain range of Reynolds numbers [1]. In the present paper, the anisotropic structure of a fluid with additives is described by Ericksen's rheological model [2]. The parameters of the model are particularized in accordance with the paper [3] of Pilipenko, Kalinichenko, and Lemak, and in the limiting case of weak Brownian motion allowance is made for the effect of the predominant orientation of the particles and the influence of additives on the longitudinal and shear viscosity. The stability of the Poiseuille flow is considered in the linear formulation. In an anisotropic viscous fluid, an equation of Orr-Sommerfeld type has a singular point. A rule for choosing the path of integration avoiding the singular point is obtained on the basis of a generalization of the method of Dikii [4] proposed in an investigation of the stability of the flow of an ideal fluid. The results of numerical calculations of the neutral stability curve for two-dimensional perturbations are given. 相似文献
39.
Yu. A. Berezhnoy V. P. Mikhailyuk V. V. Pilipenko 《The European Physical Journal A - Hadrons and Nuclei》2009,39(1):125-131
The -cluster model with dispersion has been developed for the case of the 24Mg nucleus. The 24Mg nucleus is considered as composed of the core ( 16O nucleus) and two -clusters that form a dumbbell configuration and are arranged with the most probability inside the core. In the calculations
the -cluster structure of the core has been taken into account. On the basis of the multiple diffraction scattering theory the
differential cross-section and the polarization observables for the elastic p - 24Mg scattering at 800 and 250MeV have been calculated. The results obtained are in agreement with the existing experimental
data. 相似文献
40.
The goal of this study is to prove an existence and uniqueness theorem for the solution of a stochastic differential equation with Lévy noise in the case where the drift coefficient can be discontinuous. Additionally, the differentiability of the solution with respect to the initial condition is proved. 相似文献