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排序方式: 共有59条查询结果,搜索用时 15 毫秒
1.
K. B. Korotchenko 《Russian Physics Journal》1986,29(5):393-396
We study the geometrical connection between the fundamental equations of the quasiclassical model proposed by Rodimov to explain the behavior of microparticles in atomic systems in his monograph Self-Oscillating Quantum Mechanics; the v and u equations. It is shown that the geometry of the spaces for the v and u equations is different, but the metrical coefficients are related by simple algebraic relations.Translated from Izvestiya Vysshikh Uchebnykh Zavedenii Fizika, No. 5, pp. 66–70, May, 1986.The author thanks Go I. Flesher for interest in the work and useful critical discussions and also I. L. Bukhbinder for fruitful discussions of the fundamental aspects of the work. 相似文献
2.
Shastin A. V. Nenajdenko V. G. Korotchenko V. N. Balenkova E. S. 《Russian Chemical Bulletin》2001,50(8):1401-1405
A new stereoselective method was developed for the synthesis of -bromostyrenes (E/Z > 5/1) starting from hydrazones of aromatic aldehydes and bromoform in the presence of CuCl. 相似文献
3.
Nenaidenko V. G. Korotchenko V. N. Shast A. V. Tyur D. A. Balenkova E. S. 《Russian Chemical Bulletin》2003,52(8):1835-1840
The mechanism of formation of alkene stereoisomers in the catalytic olefination reaction of carbonyl compounds was studied. 4-Chlorobenzaldehyde hydrazone 1 stereoselectively reacts with a number of F-, Cl-, Br-, and I-containing polyhaloalkanes in the presence of catalytic amounts of CuCl to give -substituted styrenes 2 with the more thermodynamically stable alkene isomer being the major product. A model for the formation of the stereoisomers of alkenes 2 in the olefination reaction is proposed. Stereoselectivity of the reaction is determined by elimination of copper(ii) halides from the lowest-lying conformers of organocopper intermediates II. According to quantum-chemical calculations, the elimination should involve the staggered conformations with antiperiplanar arrangement of C—Hal and C—Cu bonds and proceed by the E2 anti-elimination mechanism. The results of quantum-chemical calculations are in good agreement with the experimental E/Z alkene isomer ratios. 相似文献
4.
Nenajdenko V. G. Korotchenko V. N. Shastin A. V. Balenkova E. S. 《Russian Chemical Bulletin》2004,53(5):1034-1064
The review is devoted to a new catalytic olefination reaction (COR) discovered by the authors. This is the reaction between N-unsubstituted hydrazones of carbonyl compounds with dihalides CHal2XY in the presence of copper(i) chloride to give substituted alkenes. Catalytic olefination is versatile. Variation of the carbonyl and olefinating components opens up the way for the synthesis of various classes of unsaturated compounds including those containing functional groups. The reaction mechanism is discussed and a catalytic cycle describing the process is proposed. A model for estimating and predicting the reactivity of halogen-containing compounds in the COR is developed. The relationship between the structure of the carbonyl substrates and their behavior in the title reaction is elucidated. 相似文献
5.
The stability constants of 1: 1 and 1: 2 acidic copper(II) violurate complexes and the CuL complex, where L is the anion of
violuric acid (H2L), were determined by pH-metry at ionic strength I = 0.1 at 20°C. The stability of the violurate complexes of triply charged cations [ML]+ and quadruply charged thorium [ThL]2+ increases in the sequence La3+, Gd3+, Y3+, Sc3+, Th4+, Fe3+. It was shown that violuric acid behaves as either mono- or dibasic, depending on the conditions, with respect to all of
these cations. 相似文献
6.
Nenajdenko V. G. Shastin A. V. Korotchenko V. N. Balenkova E. S. 《Russian Chemical Bulletin》2001,50(6):1047-1050
A new general one-pot preparative method for the synthesis of 1-aryl(hetaryl)-2,2-dichloroethenes from aldehydes was developed. The method involves successive conversions of the latter into hydrazones followed by treatment with carbon tetrachloride in the presence of copper(i) chloride. 相似文献
7.
8.
K. B. Korotchenko 《Russian Physics Journal》1998,41(7):662-666
The primary goal of this work is to use a very well-known problem (the Kepler problem) to demonstrate the procedure for the
construction in theK-field formalism of the nonrelativistic approximation of the quantum mechanical model of the stationary states of the hydrogen
atom neglecting the spin properties of the electron. It is shown that the standard stationary states of the hydrogen atom
correspond to Lyapunov-stable trajectories of theK particle (point test particle, the classical model of the electron in the atom). In spite of the electron being considered
initially as a point particle without angular momentum, the internal logic of quantum mechanics in theK-field formalism requires the existence of the spin characteristics for the quantum mechanical model of the electron in the
Kepler problem, even in the nonrelativistic approximation.
Tomsk Polytechnic Institute. Translated fromIzvestiya Vysshikh Uchebnykh Zavedenii, Fizika, No. 7, pp. 59–64, July, 1998. 相似文献
9.
K. B. Korotchenko 《Russian Physics Journal》2007,50(4):323-325
A quasi-classical model of the simplest quantum object-a free particle-is suggested in the paper. In comparison with the well-known
model (obtained from the Nyborg equation), this model has the advantage, that it allows the wave properties of a microparticle
to be considered.
__________
Translated from Izvestiya Vysshikh Uchebnykh Zavedenii, Fizika, No. 4, pp. 17–19, April, 2007. 相似文献
10.