全文获取类型
收费全文 | 68篇 |
免费 | 0篇 |
专业分类
化学 | 49篇 |
力学 | 3篇 |
数学 | 8篇 |
物理学 | 8篇 |
出版年
2020年 | 1篇 |
2019年 | 3篇 |
2018年 | 2篇 |
2017年 | 1篇 |
2016年 | 3篇 |
2015年 | 3篇 |
2014年 | 1篇 |
2013年 | 4篇 |
2012年 | 2篇 |
2011年 | 1篇 |
2010年 | 3篇 |
2009年 | 5篇 |
2008年 | 1篇 |
2007年 | 2篇 |
2006年 | 3篇 |
2004年 | 5篇 |
2003年 | 3篇 |
2002年 | 5篇 |
2001年 | 1篇 |
2000年 | 2篇 |
1999年 | 1篇 |
1996年 | 2篇 |
1993年 | 1篇 |
1991年 | 1篇 |
1990年 | 1篇 |
1989年 | 3篇 |
1988年 | 1篇 |
1986年 | 1篇 |
1979年 | 1篇 |
1976年 | 2篇 |
1962年 | 1篇 |
1960年 | 2篇 |
排序方式: 共有68条查询结果,搜索用时 9 毫秒
11.
M. A. Lapshina D. O. Filatov D. A. Antonov N. S. Barantsev 《Journal of Surface Investigation: X-ray, Synchrotron and Neutron Techniques》2009,3(4):559-565
The morphology and electronic properties of Au nanoclusters on the surface of SiO2 thin films on n +-Si substrates are studied using the combined scanning tunneling microscopy (STM) and atomic-force microscopy (AFM) technique. The peaks associated with the resonant tunneling of electrons from the states of the valence band of the probe material to the states of the conduction band of the substrate material through Au nanoclusters are observed on the current-voltage characteristics for the contact of a p +-Si AFM probe with Au nanoclusters. Experimental results are interpreted by calculating the tunnel transparency of the SiO2/Au/SiO2 double barrier structure in a strong electric field. 相似文献
12.
P. A. Borodin A. A. Bukharaev D. O. Filatov D. A. Vorontsov M. A. Lapshina 《Journal of Surface Investigation: X-ray, Synchrotron and Neutron Techniques》2009,3(5):721-724
Combined ultra-high vacuum scanning tunneling/atomic-force microscopy (STM/AFM) has been implemented for the first time for
the tunneling spectroscopy of the size-quantized states in the InAs/GaAs(001) surface quantum dots (QDs). The tunneling spectra
and current images, which reflect the energy and spatial distribution of the local density of the ground and excited states
in the QDs have been obtained. 相似文献
13.
Doklady Mathematics - The even Radon–Kipriyanov transform (Kγ-transform) is suitable for studying problems with the Bessel singular differential operator $${{B}_{{{{gamma }_{i}}}}} =... 相似文献
14.
15.
Goldshleger N. F. Gak V. Yu. Lapshina M. A. Baulin V. E. Shiryaev A. A. Tsivadze A. Yu. 《Russian Chemical Bulletin》2018,67(12):2205-2211
Russian Chemical Bulletin - The behavior of crown- and phosphoryl-containing magnesium and zinc phthalocyaninates in solutions of synthetic and natural surfactants is studied. In a phosphate buffer... 相似文献
16.
N. I. Giricheva G. V. Girichev S. B. Lapshina N. I. Kuzmina 《Journal of Structural Chemistry》2000,41(1):48-54
Molecular structure of dipivaloylmethane was investigated by X-ray electron diffraction at 24°C. The C2v and Cs geometrical models involving an intramolecular hydrogen bond are considered. The C2v model with enol hydrogen lying symmetrically relative to the oxygen atoms has several advantages over the classical model
of the enol tautomer.
Translated from Zhumal Struktumoi Khimii, Vol. 41, No. 1, pp. 58-66, January–February, 2000 相似文献
17.
Zavodnik IB Lapshina EA Zavodnik LB Soszyński M Bartosz G Bryszewska M 《Bioelectrochemistry (Amsterdam, Netherlands)》2002,58(2):127-135
Hypochlorous acid, one of the most powerful biological oxidants, is believed to be important in the pathogenesis of some diseases. The purpose of this study was to further characterise the membrane and intracellular events which resulted in HOCl-induced oxidative impairments and haemolysis of human erythrocytes and interaction of different oxidative agents, which accumulated during respiratory burst, in the process of RBS oxidation. The sequence of cellular events after red blood cell exposure to HOCl: cell morphological transformations, oxidation of cellular constituents, enzyme modifications, and haemolysis have been evaluated. It was shown that HOCl-treated cells underwent colloid-osmotic haemolysis, preceded by rapid morphological transformations and membrane structural transitions. The activation energy of the process of haemolysis (after removal of the excess of oxidative agent) was estimated to be 146+/-22 kJ/mol at temperatures above the break point of Arrhenius plot (31-32 degrees C). This value corresponds to the activation energy of the process of protein denaturation. Modification of erythrocytes by HOCl inhibited membrane acetylcholinesterase (uncompetitive type of inhibition), depleted intracellular glutathione, activated intracellular glutathione peroxidase, but did not induce membrane lipid peroxidation. The presence of other oxidants, nitrite or tert-butyl hydroperoxide (t-BHP), promoted the oxidative damage induced by HOCl and led to new oxidative reactions. 相似文献
18.
V. M. Shapovalov S. V. Lapshina 《Journal of Applied Mechanics and Technical Physics》2002,43(2):336-340
The plane problem of dynamic interaction of a laminar viscous fluid flow and an inextensible pliable fiber of finite length is solved using the perturbation method. Two types of rheological twodimensional flows — pure shear and simple shear — are considered. Formulas are obtained for the evolution of the tensile force and the shape of the fiber. Results of asymptotic and numerical calculations are compared. 相似文献
19.
I. E. Efremova L. V. Lapshina M. I. Vakulenko V. M. Berestovitskaya 《Russian Journal of General Chemistry》2013,83(9):1751-1754
The interaction of 1-nitrocyclohexene with alicyclic amines can proceed via nucleophilic addition at the carbon-carbon double bond (morpholine, piperazine) to form aza-Michael products or as deprotonation (piperidine, azepane) to give ammonium salts, 2-cyclohexene-1-nitronates. The preferred reaction pathway is determined by the amine basicity. 相似文献
20.
L. V. Lapshina A. V. Serebryannikova I. E. Efremova A. D. Perkhunova S. V. Bortnikov V. M. Berestovitskaya 《Russian Journal of General Chemistry》2014,84(8):1519-1523
Reactions of s-trans-nitrosulfodienes of the 2-benzylidene-3-methyl-4-nitro-3-thiolene-1,1-dioxide series with aroylhydrazines occur as nucleophilic 1,4-addition to give the aza-Michael adducts. Activity of the studied substrates depends on the nature of the substituents in the benzene ring of benzylidene fragment. Previously unexplored representatives of the 2-benzylidene-3-methyl-4-nitro-3-thiolene-1,1-dioxides have been synthesized. 相似文献