全文获取类型
收费全文 | 249篇 |
免费 | 1篇 |
专业分类
化学 | 118篇 |
晶体学 | 6篇 |
力学 | 20篇 |
数学 | 34篇 |
物理学 | 72篇 |
出版年
2021年 | 2篇 |
2020年 | 3篇 |
2019年 | 5篇 |
2018年 | 2篇 |
2017年 | 7篇 |
2016年 | 7篇 |
2015年 | 4篇 |
2014年 | 7篇 |
2013年 | 10篇 |
2012年 | 9篇 |
2011年 | 14篇 |
2010年 | 4篇 |
2009年 | 7篇 |
2008年 | 10篇 |
2007年 | 3篇 |
2006年 | 3篇 |
2005年 | 4篇 |
2004年 | 5篇 |
2003年 | 7篇 |
2002年 | 14篇 |
2001年 | 8篇 |
2000年 | 5篇 |
1999年 | 6篇 |
1998年 | 5篇 |
1997年 | 5篇 |
1994年 | 2篇 |
1993年 | 5篇 |
1992年 | 4篇 |
1991年 | 2篇 |
1990年 | 2篇 |
1988年 | 5篇 |
1987年 | 2篇 |
1986年 | 5篇 |
1985年 | 4篇 |
1984年 | 2篇 |
1983年 | 4篇 |
1982年 | 2篇 |
1981年 | 2篇 |
1980年 | 4篇 |
1979年 | 8篇 |
1978年 | 5篇 |
1977年 | 4篇 |
1975年 | 2篇 |
1974年 | 8篇 |
1972年 | 4篇 |
1971年 | 5篇 |
1970年 | 2篇 |
1969年 | 2篇 |
1968年 | 2篇 |
1966年 | 1篇 |
排序方式: 共有250条查询结果,搜索用时 15 毫秒
1.
We propose a way of modifying the mathematical model of the nondestructive theoretical-experimental method of determining the residual stresses for a specific collection of technological conditions for welding two cylindrical glass shells. The method is based on the general theory of boundary-value problems for ordinary differential equations.Translated fromMatematicheskie Metody i Fiziko-Mekhanicheskie Polya, Issue 33, 1991, pp. 69–73. 相似文献
2.
Blinov E. M. Komarova L. F. Polishchuk S. A. Krivosheev P. A. Rybal'chenko T. A. 《Russian Journal of Applied Chemistry》2002,75(7):1191-1193
The features of sorption of ethanol, isopropanol, butanol, isobutanol, and tert-butanol with activated charcoals under static conditions were studied. 相似文献
3.
The benzo-9-crown-3 and benzo-12-crown-4 derivatives are formed by reaction of tetranitrodibenzo-18-crown-6 and tetranitrodibenzo-24-crown-8, respectively, with sodium methoxyethoxide in DMSO at 20C.Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 11, pp. 1474–1476, November, 1990. 相似文献
4.
V. R. Polishchuk L. A. Leites E. I. Mysov A. F. Aérov E. M. Kagramanova 《Russian Chemical Bulletin》1992,41(2):358-359
Trifluoroacetic acid adds to 2,3-difluorobicyclohepta[2.2.1]diene-2,5 at the FC=CF bond to give mainly the cis-exo adduct.A. N. Nesmeyanov Institute of Organometallic Compounds, Russian Academy of Sciences, 117813 Moscow. Translated from Izvestiya Akademii Nauk, Seriya Khimicheskaya, No. 2, pp. 450–452, February, 1992. 相似文献
5.
A. V. Glushkov V. A. Efimov E. D. Gopchenko S. V. Ambrosov V. I. Polishchuk I. M. Shpinareva 《Journal of Structural Chemistry》1998,39(4):480-483
Interatomic potentials are calculated for the systems inert gas ion in the ground state-inert gas atom Ne+, Xe+ -Ne, Ar, Kr, Xe, Fr. The calculation is performed by the effective pseudopotential method using the new form of the polarization
interaction potential obtained by calculating the most important polarization diagrams of perturbation theory in the Thomas-Fermi
approximation. The quasimolecular states of these van der Waals systems are calculated to refine the available data; some
data are obtained for the first time.
Translated fromZhumal Strukturnoi Khimii, Vol. 39, No. 4, pp. 591–595, July–August, 1998. 相似文献
6.
The nature of the reaction of a reagent with tetranitrodibenzo-18-crown-6 was found to depend on its basicity. This behavior was interpreted in the framework of the theory of hard and soft acids and bases.Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 5, pp. 605–608, May, 1992. 相似文献
7.
R. F. Polishchuk 《Bulletin of the Lebedev Physics Institute》2013,40(1):12-16
The hypothesis that heavy dichromatic lepton structures corresponding to the dual group SU(2) and called the friedmons are dark matter particles is proposed. Arguments in favor of the Einstein theory generalization to the Einstein-Cartan theory are presented. It is shown that string additions in the Schwarzschild and de Sittermetrics correspond to the cosmological constant. 相似文献
8.
9.
R. F. Polishchuk 《Bulletin of the Lebedev Physics Institute》2013,40(3):62-67
This study is a direct continuation of previous work [1]. 相似文献
10.
R. F. Polishchuk 《Bulletin of the Lebedev Physics Institute》2012,39(8):226-228
The hypothesis of friedmons, the particles of mass 1.53 · 10?15 g, as candidates to dark matter particles is presented. Friedmons are stable bicolor lepton structures corresponding to exact symmetry group SU(2), the dual group of electroweak interaction. Similarly to the fact that the nucleon mass is related to the average star mass, the friedmon mass is related to the mass of the Metagalaxy whose metric is close to the de Sitter metric and which can be qualitatively considered as a white hole with an event horizon defined by the cosmological constant. 相似文献