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11.
Russian Journal of Organic Chemistry - Ethynyl(trimethyl)silane reacted with N,N-dichloroarenesulfonamides to give unstable N-[2,2-dichloro-2-(trimethylsilyl)ethylidene]arenesulfonamides... 相似文献
12.
Ishchenko A. N. Afanas’eva S. A. Belov N. N. Burkin V. V. Zakharov V. M. Zykova A. I. Sammel’ A. Yu. Skosyrskii A. B. Stepanov E. Yu. Tabachenko A. N. Chupashev A. V. Ushakova O. V. Khabibullin M. V. Yugov N. T. 《Technical Physics》2020,65(6):925-934
Technical Physics - The ballistic resistance of a combined cermet material based on a high-hardness ceramic bound with an intermetallide on a high-strength metal substrate, (TiB2 + NiTi) + Ti, is... 相似文献
13.
用强子–弦级联模型JPCIAE及相应的Monte Carlo事例产生器研究相对论性核–核碰撞中带电粒子多重数的赝快度密度对能量和中心度的依赖关系.无需另调任何模型参数的条件下,此模型可以同时较好地描述相对论性pp实验数据及PHOBOS和PHENIX实验组的Au+Au实验数据.本文指出:因〈Npart〉并非严格定义的物理量,致使实验上和理论上确定〈Npart〉有一定任意性,从而使得每参加者核子对的带电粒子赝快度密度随着〈Npart〉的增加可能逐渐增大,也可能逐渐减小,因此用它来区分粒子产生机制是欠妥的. 相似文献
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The maximization of the terminal state norm of a linear system is considered in the sense of searching for and improving extreme
points of the reachable set. A sufficient optimality condition is formulated in terms of a special maximum function. A steepest
ascent method for level surfaces of the objective function is constructed, and related procedures for improving extreme controls
are described. 相似文献
16.
I. N. Flerov M. V. Gorev M. L. Afanas’ev T. V. Ushakova 《Physics of the Solid State》2002,44(10):1961-1966
The heat capacity of partially deuterated crystals with a cryolite structure, namely, (NH4)3ScF6 and (NH4)3GaF6, is measured in the temperature range from 80 to 370 K. The p-T phase diagrams of these compounds are investigated at pressures up to p=0.6 GPa. It is revealed that the deuteration does not affect the sequences of phase transitions observed in the proton-containing ammonium cryolites studied earlier. The isotope effect most clearly manifests itself in significant changes in the thermodynamic parameters of the $I12/m1 - P\bar 1$ low-temperature transformation in scandium cryolite. 相似文献
17.
A. S. Filippov I. A. Korotkin A. A. Kanaev V. V. Kondakov I. O. Urazov O. A. Ushakova P. G. Yakovlev 《Journal of Engineering Thermophysics》2008,17(4):320-327
The results of numerical modeling of two-phase electrolyte thermo-and hydrodynamics in the working space of a separate electrolyzer
cell with vertical electrode arrangement are presented. The problem is solved in a self-consistent formulation taking into
account the electric current, Joule heat evolution, gas evolution, gas and liquid flows, and electric conductivity of the
disperse phase. Within the framework of the proposed two-liquid approach, near-wall bubbly flow is calculated using a model
of expanding gas plume, which is based on the introduction of an effective force acting upon the gas phase. The results of
several variants of such calculations are compared. The numerical solution is also compared to approximate analytical solutions
of the problem. The results of this study can be used to calculate estimations of the electrical and thermal regimes of vertical
electrolyzers. 相似文献
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Krylov V. B. Ushakova N. A. Ustyuzhanina N. E. Preobrazhenskaya M. E. Yashunsky D. V. Menshov V. M. Tsvetkov D. E. Sharma G. V. M. Radha Krishna P. Nifantiev N. E. 《Russian Chemical Bulletin》2010,59(1):232-235
Persulfated derivatives of natural polyhydroxy compounds, such as lignans secoisolariciresinol, and isolariciresinol, flavonoid
dihydroquercetin, and myo-inositol, have been synthesized. The ability of these compounds to inhibit the intrinsic pathway of blood coagulation (APTT-test)
and to reduce the activity of coagulation factor Xa in the presence of antithrombin(III) has been studied. 相似文献