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61.
A. V. Odesskii V. N. Rubtsov V. V. Sokolov 《Theoretical and Mathematical Physics》2012,171(1):442-447
We consider a special class of Poisson brackets related to systems of ordinary differential equations with matrix variables.
We investigate general properties of such brackets, present an example of a compatible pair of quadratic and linear brackets,
and find the corresponding hierarchy of integrable models, which generalizes the two-component Manakov matrix system to the
case of an arbitrary number of matrices. 相似文献
62.
N. A. Rubtsov 《Thermophysics and Aeromechanics》2012,19(4):629-639
Model interpretation of heating and melting processes is analyzed in application to the onephase statement of Stefan problem in a flat layer of semitransparent material heated from one side, and melted by the radiation-convective method. 相似文献
63.
V. V. Kuznetsov E. A. Kognovitskaya M. L. Lunina E. R. Rubtsov 《Russian Journal of Physical Chemistry A, Focus on Chemistry》2011,85(12):2062-2067
The heterophase equilibria in the InBiAsSb and GaInBiAsSb systems are analyzed in the context of simple solutions. Linear interpolation is to determine the thermodynamic and crystal-chemical parameters for virtual GaBi compound. The boundaries of existence for InBiAsSb and GaInBiAsSb solid solutions are calculated and the thermodynamic limits that characterize their synthesis are determined for the temperature range of 650–780 K. Heteroepitaxial InBiAsSb/InSb structures are formed on the basis of our analysis by zone recrystallization according to temperature gradient (ZRTG). 相似文献
64.
The one-phase Stefan problem was simulated numerically in a layer of semitransparent medium with different emissivity factors at the right moving boundary. The effect of optic properties of irradiated surface on formation of temperature fields and radiation flux densities was demonstrated. 相似文献
65.
66.
A. N. Grinev I. A. Kharizomenova M. V. Kapustina Yu. N. Sheinker L. M. Alekseeva N. M. Rubtsov E. F. Kuleshova 《Chemistry of Heterocyclic Compounds》1986,22(9):951-953
Oximes of 2-acylamino-3-ethoxycarbonyl-7-oxo-4,5,6,7-tetrahydrobenzo[b]thiophenes have been prepared. A method for the synthesis of derivatives of 7-aminobenzo[b]thiophene is proposed and the hydrolysis of the compounds prepared has been studied.Deceased.Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 9, pp. 1178–1180, September, 1986. 相似文献
67.
The regularities of vapor-phase nitration of cellulose with HNO3 under conditions of natural convection and hindered heat removal in the absence of air were studied using the nonisothermal kinetic method. It was established that the nitration rate at the depth of conversion of 0.08 to 0.7 is described by the kinetic law d/dt =k
1
p/(1+), wherek
1 = 104.49±0.6 exp(–A/RT) s–1 atm–1, = 10–35.5±15.7exp(B/RT),A = 36.6±3.8 kl mol–1, andB = 203±88 kJ mol–1. The diffusion mechanism of vapor-phase nitration of cellulose, which explains the high value of activation energies, is discussed. The effective diffusion coefficient of HNO3 in cellulose at 25 °3.7 · 10–7 cm2 s–1) and the activation energy of diffusion (38.3±4.2 kJ mol–1) were estimated.For Part 1, see Ref. l.Translated fromIzvestiya Akademii Nauk. Seriya Khimicheskaya, No. 8, pp. 1981–1985, August, 1996. 相似文献
68.
A. I. Kazakov Yu. I. Rubtsov E. P. Kirpichev G. B. Manelis 《Russian Chemical Bulletin》1998,47(6):1084-1088
The influence of preliminary γ-irradiation and γ-irradiation during hte oxidation process on the kinetics of heat release
in the systemsn-decane—aqueous solution of HNO3 and a solution of tributyl phosphate in a kerosene—aqueous solution of HNO3 was studied. The preliminary γ-irradiation of the system at 43°C increases the initial rate of the process (k
1). The increase is proportional to the irradiation dose at doses up to 150kGy, then the increase ink
1 is retarded, and the further course of the process becomes practically independent of the irradiation dose. The effect of
γ-irradiation during the oxidation depends on the temperature of the system: at temperatures lower than 80 °C, γ-irradiation
increases the rate of heat release, whereas at higher temperatures, γ-irradiation decreases the rate of heat release. The
effects observed were explained by the competition of NO2 accumulation due to the radiolysis of nitric acid and processes of the addition of NO2 to unsaturated hydrocarbons produced by the radiolysis of the organic phase.
Translated fromIzvestiya Akademii Nauk, Seriya Khimicheskaya, No. 6, pp. 1116–1120, June, 1998. 相似文献
69.
70.