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51.
R. G. Zaripov 《Russian Physics Journal》2006,49(2):157-165
Evolution of the Havrda-Charvat-Daroczy entropy and energy dissipation during irreversible processes in open nonextensive
systems is considered. The kinetic equation and statistical criterion of nonextensive system evolution are presented. Nonequilibrium
statistical and variational methods of derivation of the kinetic equation with a source being a fluctuation of a physical
quantity are described.
__________
Translated from Izvestiya Vysshikh Uchebnykh Zavedenii, Fizika, No. 2, pp. 35–41, February, 2006. 相似文献
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A. S. Romakhin Yu. G. Budnikova I. M. Zaripov Yu. M. Kargin E. V. Nikitin A. P. Tomilov Yu. A. Ignat'ev V. V. Smirnov 《Russian Chemical Bulletin》1992,41(6):1031-1035
An electrochemical method, based on the joint action of nucleophilic and electrophilic reagents on P4, is proposed in order to utilize white phosphorus in the formation of the esters of phosphorus acids. The action of alkoxide ions on white phosphorus in an alcohol medium in the presence of iodine generated at the anode leads to the formation of phosphate esters. A scheme in which the intermediate products are dialkyl and trialkyl phosphites and the side product is dialkyl alkylphosphonate is proposed for the process.A. E. Arbuzov Institute of Organic and Physical Chemistry, Kazan' Scientific Center, Russian Academy of Sciences, 420028 Kazan'. V. I. Ul'yanov-Lenin Kazan State University, 420028 Kazan'. Translated fromIzvestiya Akademii Nauk, Seriya Khimicheskaya, No. 6, pp. 1322–1328, June, 1992. 相似文献
54.
The enthalpies of formation (ΔH f o) for 24 hydrocarbon radicals (R?), mainly polycyclic aromatic radicals with the complex structure, were determined from the published data on bond dissociation energies. The ΔH f o values of the corresponding molecules were calculated, in the majority of cases, by the macroincrement method. Calculations by the group contribution method were performed. Some ΔH f o(R?) values were compared to those calculated by the additive-group method. Calculations were performed, and the conjugation energies of the radicals were discussed. The errors of determination of the ΔH f o(R?) values found were estimated. Due to this work, the database for ΔH f o values of hydrocarbon radicals was increased more than by 25%. 相似文献
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56.
V. P. Zhitnikov N. M. Sherykhalina A. A. Zaripov 《Journal of Applied Mechanics and Technical Physics》2017,58(6):1099-1107
The problem of modeling of electrochemical machining is reduced to the solution of the Schwartz problem on a parametrical rectangle with the use of theta-functions. Various conditions (non-equipotentiality of electrodes and inconstancy of current efficiency) at the boundary of a processed surface are considered. Nonstationary, quasistationary, stationary, and limit solutions are studied. Results of machining of surfaces by tool electrodes of various shapes are given. It is shown that machining mode parameters significantly affect the dissolved layer size necessary for obtaining high-precision copying. 相似文献
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59.
A. V. Il’yasov N. K. Gaisin B. I. Buzykin R. B. Zaripov 《Russian Chemical Bulletin》2010,59(8):1506-1511
The 1H spin-lattice relaxation times of the proton-bearing groups and the 31P spin-lattice relaxation times in C-phosphorylated oximes R1C(=NOH)P(=O)R2R3 (R1 = Ph, R2 = R3 = OMe; R1 = Ph, R2 = OMe, R3 = OCH2CH2Br; R1 = PhCH2, R2 = R3 = OCHMe2) and dioxime R2P(=O)C(=NOH)(CH2)4C(=NOH)P(=O)R2 (R = OMe) in DMSO-d6 were measured. The characteristic reorientation times of the whole molecules were estimated using the measured values of
the 1H relaxation times and the results of semiempirical PM3 quantum chemical calculations of the molecular geometries. The reorientation
times were used to identify the contributions of different relaxation mechanisms to the rate of 31P spin-lattice relaxation. The anisotropy of the chemical shielding of 31P nuclei was evaluated from the difference between the 31P relaxation rates measured at 101.27 and 161.92 MHz. 相似文献
60.
A calculation was carried out for the normal mode frequencies and forms of 2-bromo- and 2-chloro-1,3,2-dioxarsenanes. Gaseous electron diffraction was used to determine the ra structure of 2-chloro-1,3,2-dioxarsenane. In accord with the results of other physical measurements, we established the chair conformation with axial orientation of the bromine atom.A. E. Arbuzov Institute of Organic and Physical Chemistry, Kazan Branch, Academy of Sciences of the USSR. Translated from Zhurnal Strukturnoi Khimii, Vol. 30, No. 5, pp. 55–60, September–October, 1989. 相似文献