全文获取类型
收费全文 | 130篇 |
免费 | 0篇 |
专业分类
化学 | 38篇 |
晶体学 | 2篇 |
力学 | 27篇 |
数学 | 11篇 |
物理学 | 52篇 |
出版年
2022年 | 2篇 |
2021年 | 5篇 |
2019年 | 3篇 |
2018年 | 3篇 |
2016年 | 2篇 |
2015年 | 1篇 |
2014年 | 1篇 |
2013年 | 4篇 |
2012年 | 2篇 |
2011年 | 4篇 |
2010年 | 6篇 |
2009年 | 6篇 |
2008年 | 5篇 |
2007年 | 4篇 |
2006年 | 4篇 |
2005年 | 6篇 |
2004年 | 2篇 |
2003年 | 7篇 |
2002年 | 1篇 |
2001年 | 2篇 |
2000年 | 2篇 |
1999年 | 1篇 |
1998年 | 1篇 |
1997年 | 2篇 |
1995年 | 2篇 |
1994年 | 2篇 |
1993年 | 5篇 |
1992年 | 2篇 |
1991年 | 3篇 |
1990年 | 2篇 |
1989年 | 2篇 |
1988年 | 4篇 |
1987年 | 1篇 |
1986年 | 3篇 |
1985年 | 2篇 |
1984年 | 1篇 |
1983年 | 1篇 |
1982年 | 2篇 |
1981年 | 1篇 |
1980年 | 1篇 |
1979年 | 1篇 |
1978年 | 1篇 |
1977年 | 4篇 |
1976年 | 5篇 |
1975年 | 2篇 |
1974年 | 2篇 |
1973年 | 1篇 |
1971年 | 1篇 |
1969年 | 1篇 |
1966年 | 1篇 |
排序方式: 共有130条查询结果,搜索用时 15 毫秒
11.
A. V. Inyushkin V. G. Ralchenko A. N. Taldenkov A. A. Artyukhov A. A. Artyukhov Ya. M. Kravets I. P. Gnidoi A. L. Ustinov A. P. Bolshakov A. F. Popovich A. V. Savelyev A. V. Khomich V. Ya. Panchenko V. I. Konov 《Bulletin of the Lebedev Physics Institute》2007,34(11):329-333
We measured the temperature dependence of thermal conductivity of a polycrystalline CVD diamond with natural isotope composition and an isotope enriched (99.96% 12C) sample at temperatures from 5 to 420 K. The isotope enriched diamond demonstrates a considerable growth of thermal conductivity at temperatures above 80 K compared to the diamond with natural composition of isotopes. At room temperature the thermal conductivity reaches 24.3 W·cm?1K?1, and the isotope effect makes up not less than 34%. 相似文献
12.
Kravets L. I. Dmitriev S. N. Satulu V. Mitu B. Dinescu G. 《Russian Journal of Applied Chemistry》2010,83(9):1628-1635
Structure and electrotransport properties of poly(ethylene terephthalate) track membranes modified in pyrrole plasma were
studied. Physicochemical aspects of the conductivity asymmetry arising from the contact of two layers with functional groups
of different nature and from changes in the pore geometry are discussed. 相似文献
13.
14.
An experimental study was made of some schemes for flow around multiwedge bodies at supersonic flow velocities. On the basis of data on the distribution of the pressure, on visualization of the flow, and on optical measurements, an analysis was made of the structure of the flow. Zones of breakaway of the flow were observed at the lateral surfaces of the lobes. In the nose part of a multiwedge body there is a three-dimensional configuration of attached plane shock waves, going over into a combined detached nonaxisymmetric wave directed toward the base of the body. 相似文献
15.
16.
A magnetoimpedance effect is observed in Co80–xNixB20 (x = 4, 6, 8, 10, 12) amorphous metal alloy ribbons when an alternating current at frequencies ranging from 1–3000 kHz is passed
through samples in an external magnetic field. Spectra of the permittivity and optical conductivity of the surface of ribbons
of these alloys are obtained for incident photon energies of 1.0–5.0 eV. The relationships between the magnitude of the magnetoimpedance
effect, and the magnetic properties, electronic structure parameters, and optical characteristics of the amorphous alloy samples
are determined. 相似文献
17.
V. G. Kravets 《Optics and Spectroscopy》2013,114(2):230-235
The photoluminescence, IR transmission, and Raman scattering spectra of nc-Si nanocrystals (5 nm in size) have been investigated. The shape and spectral position of maxima in the photoluminescence and IR transmission spectra are theoretically described. It is shown that nc-Si particles consist of a Si core and a SiO2 shell. The existence of surface Si-O and Si-H states in Si nanocrystals enhances photoluminescence. It is established that the spectral position of the main Raman scattering peak in the frequency range 500–520 cm?1 undergoes a significant red shift for small-size nanostructures. Based on direct determination of the complex refractive index of n-Si nanoparticles by measuring spectral ellipsometric parameters, nanostructured silicon is found to be an indirect-gap semiconductor. 相似文献
18.
We experimentally demonstrate extremely narrow plasmon resonances with half-width of just several nanometers in regular arrays of metallic nanoparticles. These resonances are observed at Rayleigh's cutoff wavelengths for Wood anomalies and based on diffraction coupling of localized plasmons. We show experimentally that reflection from an array of nanoparticles can be completely suppressed at certain wavelengths. As a result, our metal nanostructures exhibit pi-jump for the phase of the reflected light. 相似文献
19.
Kravets L. I. Yarmolenko M. A. Rogachev A. V. Gainutdinov R. V. Altynov V. A. Lizunov N. E. 《Colloid Journal》2022,84(4):427-444
Colloid Journal - Different methods have been considered for the formation of coatings on the surface of a hydrophilic poly(ethylene terephthalate) track-etched membrane with the help of... 相似文献
20.
Orekhova K. N. Serov Yu. M. Dement’ev P. A. Ivanova E. V. Kravets V. A. Usacheva V. P. Zamoryanskaya M. V. 《Technical Physics》2019,64(9):1336-1342
Technical Physics - In the study of materials on electron probe devices in the field of action of the electron beam, a contaminating hydrocarbon film is formed, which affects the experimental... 相似文献