全文获取类型
收费全文 | 278篇 |
免费 | 2篇 |
专业分类
化学 | 55篇 |
力学 | 33篇 |
数学 | 40篇 |
物理学 | 152篇 |
出版年
2022年 | 2篇 |
2021年 | 2篇 |
2020年 | 6篇 |
2019年 | 6篇 |
2018年 | 7篇 |
2017年 | 6篇 |
2016年 | 15篇 |
2015年 | 2篇 |
2014年 | 4篇 |
2013年 | 6篇 |
2012年 | 9篇 |
2011年 | 9篇 |
2010年 | 12篇 |
2009年 | 11篇 |
2008年 | 7篇 |
2007年 | 13篇 |
2006年 | 7篇 |
2005年 | 5篇 |
2004年 | 5篇 |
2003年 | 12篇 |
2002年 | 6篇 |
2001年 | 6篇 |
2000年 | 14篇 |
1999年 | 5篇 |
1998年 | 3篇 |
1997年 | 3篇 |
1996年 | 2篇 |
1995年 | 4篇 |
1993年 | 3篇 |
1992年 | 2篇 |
1991年 | 4篇 |
1990年 | 4篇 |
1989年 | 3篇 |
1988年 | 4篇 |
1986年 | 2篇 |
1985年 | 3篇 |
1984年 | 3篇 |
1983年 | 4篇 |
1982年 | 4篇 |
1981年 | 7篇 |
1980年 | 6篇 |
1979年 | 4篇 |
1978年 | 6篇 |
1977年 | 4篇 |
1976年 | 5篇 |
1975年 | 6篇 |
1974年 | 2篇 |
1973年 | 2篇 |
1972年 | 3篇 |
1970年 | 5篇 |
排序方式: 共有280条查询结果,搜索用时 31 毫秒
51.
52.
O. N. Tretinnikov A. A. Gorbachev E. V. Lutsenko A. V. Danilchik L. V. Shkrabatovskaya L. K. Prikhodchenko 《Polymer Science Series B》2016,58(3):278-283
The photoinduced grafting polymerization of acrylic acid onto the surface of a polypropylene film under the action of radiation with a wavelength of 365 nm and an intensity of 8–193 mW/cm2 emitted by high-power UV light-emitting diodes is studied. Grafting is performed from a thin layer of the aqueous solution of the monomer onto the surface containing a photoinitiator (benzophenone) deposited from a solution in a volatile solvent. The amount of graft polymer is determined with the use of ATR FTIR spectroscopy. At an intensity of UV radiation of 193 mW/cm2, the time of attainment of grafting-polymerization saturation is decreased by a factor of 6 relative to this time at an intensity of 8 mW/cm2, typical for emitters based on mercury lamps. The rate of grafting polymerization in the studied UV-radiation-intensity range grows in proportion to the square root of intensity. 相似文献
53.
The contribution to the kernel of the nonforward Balitsky-Fadin-Kuraev-Lipatov equation from two-gluon production is calculated for the case of the antisymmetric color-octet state of two Reggeized gluons in the t channel. The one-gluon contribution to the kernel in the one-loop approximation is also obtained by using the one-loop expression for the effective vertex of the one-gluon production in Reggeon-Reggeon collisions. An explicit form of the total kernel is presented. 相似文献
54.
A. I. Mikhailov V. F. Kabanov I. A. Gorbachev A. V. Kazak N. V. Usol’tseva E. G. Glukhovskoy 《Bulletin of the Russian Academy of Sciences: Physics》2017,81(12):1472-1475
An experimental and theoretical study is performed for features of the electronic spectrum of CdSe/CdS/ZnS quantum dots incorporated into Langmuir–Blodgett films. Analysis of the investigated samples assesses the state of the first three levels of the electron spectrum for a quantum object. Good qualitative and quantitative agreement is achieved between the experimental results and theoretical estimates. It is shown that the mechanism of the observed field emission current through a quantum dot is described satisfactorily by the Morgulis–Stratton theory under the considered experimental conditions. 相似文献
55.
56.
Yu. N. Khanin E. E. Vdovin I. A. Larkin O. Makarovsky Yu. A. Sklyueva A. Mishchenko Yi Bo Wang A. Kozikov R. V. Gorbachev K. S. Novoselov 《JETP Letters》2018,107(4):238-242
Resonance magnetic tunneling in heterostructures formed by graphene single sheets separated by a hexagonal boron nitride barrier and bounded by two gates has been investigated in a strong magnetic field, which has allowed observing transitions between spin- and valley-split Landau levels with various indices belonging to different graphene sheets. An unexpected increase with the temperature in the interlayer tunneling conductance owing to transitions between the Landau levels in strong magnetic fields cannot be explained by existing theories. 相似文献
57.
We explore and contrast the electroanalytical performance of a commercially available CVD grown graphene electrode with that of edge- and basal-plane pyrolytic graphite electrodes constructed from highly ordered pyrolytic graphite for the sensing of biologically important analytes, namely β-nicotinamide adenine dinucleotide (NADH) and uric acid (UA). We demonstrate that for the analytes studied here, in the best case, the electroanalytical performance of the CVD-graphene mimics that of edge plane pyrolytic graphite, suggesting no significant advantage of utilising CVD-graphene in this context. 相似文献
58.
We consider a collapsing spherically symmetric inhomogeneous dust cloud in higher dimensional space-time. We show that the
central singularity of collapse can be a strong curvature or a weak curvature naked singularity depending on the initial density
distribution. 相似文献
59.
D. V. Gorbachev 《Mathematical Notes》2000,68(2):159-166
We consider extremum problems for entire functions of exponential spherical type related to important extremum problems on
the optimal point (the Chernykh point) in the sharp jackson inequality in the spaceL
2(ℝ
n
) and the connection between codes and designs on the torusT
n
.
Translated fromMatematicheskie Zametki, Vol. 68, No. 2, pp. 179–187, August, 2000. 相似文献
60.
V. I. Gorbachev 《Moscow University Mechanics Bulletin》2009,64(6):148-151
Several new integral representations of the solutions to some problems of the moment and nonmoment theories of elasticity
for heterogeneous bodies are proposed in terms of the solutions to the same problems for homogeneous bodies. In particular,
these integral representations can be used to substantiate the homogenization procedure for composite mechanics problems. 相似文献