全文获取类型
收费全文 | 987篇 |
免费 | 1篇 |
国内免费 | 1篇 |
专业分类
化学 | 384篇 |
晶体学 | 12篇 |
力学 | 31篇 |
数学 | 175篇 |
物理学 | 387篇 |
出版年
2022年 | 7篇 |
2021年 | 24篇 |
2020年 | 22篇 |
2019年 | 25篇 |
2018年 | 24篇 |
2017年 | 23篇 |
2016年 | 31篇 |
2015年 | 12篇 |
2014年 | 24篇 |
2013年 | 35篇 |
2012年 | 33篇 |
2011年 | 33篇 |
2010年 | 36篇 |
2009年 | 29篇 |
2008年 | 33篇 |
2007年 | 32篇 |
2006年 | 30篇 |
2005年 | 24篇 |
2004年 | 31篇 |
2003年 | 35篇 |
2002年 | 31篇 |
2001年 | 32篇 |
2000年 | 19篇 |
1999年 | 17篇 |
1998年 | 12篇 |
1997年 | 20篇 |
1996年 | 5篇 |
1995年 | 15篇 |
1993年 | 10篇 |
1992年 | 11篇 |
1991年 | 19篇 |
1990年 | 18篇 |
1989年 | 17篇 |
1988年 | 15篇 |
1987年 | 11篇 |
1985年 | 8篇 |
1984年 | 11篇 |
1983年 | 17篇 |
1982年 | 18篇 |
1981年 | 9篇 |
1980年 | 16篇 |
1979年 | 13篇 |
1978年 | 12篇 |
1977年 | 9篇 |
1976年 | 8篇 |
1975年 | 13篇 |
1974年 | 6篇 |
1973年 | 10篇 |
1970年 | 6篇 |
1963年 | 4篇 |
排序方式: 共有989条查询结果,搜索用时 23 毫秒
1.
2.
E. V. Zakharov A. G. Davydov Yu. V. Pimenov G. M. Tikhonov 《Computational Mathematics and Modeling》1991,2(1):79-84
Translated from Chislennye Metody Resheniya Obratnykh Zadach Matematicheskoi Fiziki, pp. 119–127. 相似文献
3.
L. T. Ashchepkov D. V. Davydov 《Computational Mathematics and Mathematical Physics》2006,46(11):1910-1917
Noncooperative games of a finite number of persons with interval-valued payoff functions are considered. The concept of an equilibrium situation is introduced. A reduction of such games to deterministic noncooperative games is proposed. Properties of the reduced games are discussed. Interval antagonistic and bimatrix games are examined, and illustrative examples are considered. 相似文献
4.
S. Yu. Davydov 《Technical Physics》2002,47(1):92-96
A relationship is analyzed between the ionization energy of atoms I and the work function φ of a metal composed of these atoms. The transition energy ∑=I?φ is assumed to be the sum of kinetic K and coulombic C contributions. Contribution K is calculated in the framework of a model of uniform gas of quasi-free electrons, and C is determined from experimental values of Σ. Calculations performed for a wide range of metals have shown that the dimensionless coefficients determining the Coulombic contribution C differ insignificantly between various groups of metals. The relationships obtained have been used for determining the work function of binary alloys. 相似文献
5.
Grafov B. M. Davydov A. D. Damaskin B. B. Lazorenko-Manevich R. M. 《Russian Journal of Electrochemistry》2003,39(4):439-440
Russian Journal of Electrochemistry - 相似文献
6.
D. A. Davydov S. Z. Nazarova A. A. Valeeva A. A. Rempel 《Bulletin of the Russian Academy of Sciences: Physics》2007,71(5):677-680
The order-disorder phase transition in vanadium monoxide of substoichiometric compositions VOy has been studied for the first time in situ by the Faraday method with a pendulum magnetic balance of the Domenically type. A minimum is found on the temperature dependence of the magnetic susceptibility of vanadium monoxide of different compositions at a temperature of about 700 K. X-ray diffraction analysis performed before and after measuring the magnetic susceptibility confirmed the change in the structure of vanadium monoxide and the possibility of atom-vacancy processes upon cooling and heating of the samples. 相似文献
7.
The results obtained in our previous work [4] are revised taking into account the dependence of the electron affinity on the polytype of silicon carbide SiC. The dependence of the energy level of vacancies in a polytype of silicon carbide on the band gap is determined from the data on the Schottky barrier height and is explained in the framework of a simple two-band model. 相似文献
8.
A computer search in the finite projective spaces PG(n, q) for the spectrum of possible sizes
k
of complete k-caps is done. Randomized greedy algorithms are applied. New upper bounds on the smallest size of a complete cap are given for many values of n
and q. Many new sizes of complete caps are obtained. 相似文献
9.
Non-steady-state mass-transfer processes in the electrochemical cells of rectangular cross-section with vertical and horizontal electrodes under the conditions of natural convection are simulated numerically taking into account the diffusion and convection of solely ions discharging at the electrode under limiting-current conditions. The interrelated time variations of the limiting current density at various ratios of the electrode height (length) to the interelectrode distance and the distributions of ion concentration and hydrodynamic velocity over the cell are determined. 相似文献
10.
Weak-signal methods are used to study long-term changes in the electrophysical and photoelectric properties of Si-SiO2 systems of n- and p-type semiconductors after the action of a steady magnetic field of 102 Oe. It is found that the field electrode can produce regions characterized by the anomalous recombination, migration, and
transformation of nonequilibrium charge carriers, leading to a quasi-oscillating change in the recombination activity of the
semiconducting system. It is observed that the magnetically induced changes in the system depend on the impurity of composition
of the semiconductor. The results obtained are attributed to the decomposition of the growth structures of complexes and subsequent
clustering of the decomposition products at elastic stress sinks.
Tomsk State Academy of Control Systems and Electronics. Translated from Izvestiya Vysshikh Uchebnykh Zavedenii, Fizika, No.
2, pp. 62–66, February, 1997. 相似文献