全文获取类型
收费全文 | 433篇 |
免费 | 6篇 |
国内免费 | 1篇 |
专业分类
化学 | 195篇 |
晶体学 | 10篇 |
力学 | 7篇 |
数学 | 32篇 |
物理学 | 196篇 |
出版年
2021年 | 3篇 |
2020年 | 6篇 |
2019年 | 12篇 |
2018年 | 10篇 |
2017年 | 14篇 |
2016年 | 7篇 |
2014年 | 11篇 |
2013年 | 12篇 |
2012年 | 13篇 |
2011年 | 13篇 |
2010年 | 16篇 |
2009年 | 17篇 |
2008年 | 15篇 |
2007年 | 21篇 |
2006年 | 12篇 |
2005年 | 8篇 |
2004年 | 11篇 |
2003年 | 10篇 |
2002年 | 12篇 |
2001年 | 10篇 |
2000年 | 7篇 |
1999年 | 8篇 |
1998年 | 7篇 |
1996年 | 5篇 |
1995年 | 5篇 |
1993年 | 2篇 |
1991年 | 4篇 |
1990年 | 8篇 |
1989年 | 5篇 |
1988年 | 9篇 |
1987年 | 19篇 |
1986年 | 11篇 |
1985年 | 6篇 |
1984年 | 2篇 |
1983年 | 2篇 |
1982年 | 5篇 |
1981年 | 5篇 |
1980年 | 5篇 |
1979年 | 6篇 |
1978年 | 8篇 |
1977年 | 6篇 |
1976年 | 13篇 |
1975年 | 6篇 |
1974年 | 6篇 |
1973年 | 10篇 |
1972年 | 12篇 |
1971年 | 6篇 |
1970年 | 6篇 |
1969年 | 3篇 |
1967年 | 2篇 |
排序方式: 共有440条查询结果,搜索用时 15 毫秒
1.
Voronov V. A. Dergachev E. A. Zhukovskii M. E. Neopryatnaya A. M. 《Mathematical Notes》2021,109(1-2):29-37
Mathematical Notes - The problem of finding the least number of variables of a first-order formula expressing the statement that an input-graph contains a subgraph isomorphic to a given... 相似文献
2.
Sorokin N. I. Gaynutdinov R. V. Voronov V. V. Chernova E. V. Fedorov P. P. 《Crystallography Reports》2021,66(1):126-129
Crystallography Reports - The electrical conductivity of natural samples of exogenous silicides has been studied. In the temperature range of 515?700 K, the conductivity increases from 1.1... 相似文献
3.
Demishev S. V. Anisimov M. A. Voronov V. V. Gilmanov M. I. Glushkov V. V. Karasev M. S. Filipov V. B. Shitsevalova N. Yu. 《Doklady Physics》2020,65(7):233-237
Doklady Physics - The temperature dependence of the conductivity of the topological Kondo-insulator (TKI) Sm1 – xYbxB6 is investigated in the temperature range 2 < T < 300 K for... 相似文献
4.
Optics and Spectroscopy - The Raman spectra of an Rb2KLuF6 crystal are studied in the temperature range from 8 to 375 K, which includes two phase transitions: one of which proceeds from a cubic to... 相似文献
5.
Dorofeeva T. I. Gubaidulina T. A. Sergeev V. P. Kalashnikov M. P. Voronov A. V. 《Russian Physics Journal》2020,63(7):1186-1194
Russian Physics Journal - Magnetron sputtering, vacuum arc deposition, and ion implantation have been used to create a three-layer anti-corrosive coating structure on stainless steel samples. The... 相似文献
6.
Voronov V. P. Belyakov M. Yu. Gorodetskii E. E. Kulikov V. D. Muratov A. R. Nagaev V. B. 《Transport in Porous Media》2003,51(2):123-140
The adiabatic calorimetry method is used to measure the isochoric heat capacity and the dew-bubble curves for the methane-normal pentane mixtures in bulk for three different mixture compositions of n-pentane. The near-critical behavior of the mixture heat capacity indicates that at low n-pentane concentrations, this system is close to the special point of the critical locus. The effect of porous medium has been investigated for one of the mixtures studied in bulk. It has been shown that in porous medium the essential shift of the dew-bubble curve takes place. In our opinion this shift is caused by the formation of wetting film on the surface of porous medium. The estimation of film thickness resulting from the data obtained yields the value 7–8 nm. 相似文献
7.
A. Ya. Voronov 《Fluid Dynamics》1998,33(3):450-458
An asymptotic representation for the solution of the problem of the radial structure of the internal boundary (transition)
layer and the radial distribution of the basic physical plasma characteristics of the column of a free-burning low-pressure
electric are in He is constructed.
Sarov. Translated from Izvestiya Rossiiskoi Akademii Nauk, Mekhanika Zhidkosti i Gaza, No. 3, pp. 185–195, May–June, 1998. 相似文献
8.
Fedorov P. P. Ushakov S. N. Uslamina M. A. Chernova E. V. Kuznetsov S. V. Voronov V. V. Düvel A. Heitjans P. Pynenkov A. A. Nishchev K. N. Osiko V. V. 《Crystallography Reports》2018,63(5):837-843
Crystallography Reports - Proceeding from the phase diagram of the CaF2–SrF2 system, the stability of crystal–melt interface of solid solution against constitutional supercooling has... 相似文献
9.
The study of structure and dynamics of molecules: NMR spectra transformed by superfine coupling 下载免费PDF全文
Vladimir K. Voronov 《Magnetic resonance in chemistry : MRC》2015,53(3):188-193
In the present paper, the peculiarities of NMR phenomenon in paramagnetic systems are reported. Specifics of detection of high‐resolution NMR spectra transformed by superfine interaction are discussed. Concrete examples illustrate the modern possibilities of NMR application for the study of structure and dynamics of the molecular (multielectron) systems. Copyright © 2015 John Wiley & Sons, Ltd. 相似文献
10.
A. N. Vtyurin A. S. Krylov S. V. Goryainov S. N. Krylova A. S. Oreshonkov V. N. Voronov 《Physics of the Solid State》2012,54(5):934-936
The Raman spectra of the elpasolite (Rb2KInF6) crystal have been studied in the pressure range from 0 to 5.3 GPa at a temperature of 295 K. A phase transition at a pressure of approximately 0.9 GPa has been found. An analysis of the variations in the spectral parameters has led to the conclusion that the phase transition to a distorted phase is accompanied by the doubling of the volume of the primitive cell of the initial cubic phase. Numerical calculations of the lattice dynamics in the Rb2KInF6 crystal have been performed. The numerical simulation has established that the phase transition at a pressure of 0.9 GPa is associated with condensation of the F lg mode. A probable high-pressure phase is the phase with space group C2/m. 相似文献