全文获取类型
收费全文 | 161篇 |
免费 | 1篇 |
专业分类
化学 | 113篇 |
数学 | 4篇 |
物理学 | 45篇 |
出版年
2022年 | 5篇 |
2021年 | 1篇 |
2020年 | 2篇 |
2019年 | 1篇 |
2018年 | 3篇 |
2017年 | 5篇 |
2016年 | 3篇 |
2014年 | 4篇 |
2013年 | 4篇 |
2012年 | 5篇 |
2011年 | 13篇 |
2010年 | 7篇 |
2009年 | 6篇 |
2008年 | 4篇 |
2007年 | 16篇 |
2006年 | 10篇 |
2005年 | 11篇 |
2004年 | 8篇 |
2003年 | 6篇 |
2002年 | 11篇 |
2001年 | 5篇 |
2000年 | 2篇 |
1999年 | 5篇 |
1998年 | 5篇 |
1997年 | 4篇 |
1996年 | 1篇 |
1995年 | 1篇 |
1994年 | 2篇 |
1993年 | 1篇 |
1991年 | 2篇 |
1990年 | 1篇 |
1989年 | 1篇 |
1984年 | 1篇 |
1981年 | 1篇 |
1979年 | 1篇 |
1972年 | 2篇 |
1971年 | 1篇 |
1965年 | 1篇 |
排序方式: 共有162条查询结果,搜索用时 15 毫秒
1.
2.
P. V. Snytnikov K. V. Yusenko S. V. Korenev Yu. V. Shubin V. A. Sobyanin 《Kinetics and Catalysis》2007,48(2):276-281
The performance of a Co-Pt powder and of Co-Pt catalysts supported on γ-Al2O3 and on the graphite-like carbon material Sibunit in selective CO oxidation in hydrogen-containing mixtures is considered. Fine particles of metal-metal solid solutions and intermetallides were obtained by the decomposition of a Co- and Pt-containing double complex salt in a hydrogen atmosphere at ~400°C. As compared to their Pt and Co monometallic counterparts, the bimetallic catalysts are more active and allow the CO concentration in hydrogen-containing mixtures to be reduced from 1 to 10?3 vol %. This effect is likely due to the formation of bimetallic particles of a Co-Pt solid solution on the support surface. 相似文献
3.
4.
Journal of Structural Chemistry - We report results of structural studies of multicomponent compounds, double complex salts, used as predecessors of nanoalloys of immiscible metals in Rh–Pd,... 相似文献
5.
Korenev VL 《Physical review letters》2007,99(25):256405
Linearly polarized light tuned slightly below the optical transition of the negatively charged exciton (trion) in a single quantum dot causes the spontaneous nuclear spin polarization (self-polarization) at a level close to 100%. The effective magnetic field of spin-polarized nuclei shifts the optical transition energy close to resonance with photon energy. The resonantly enhanced Overhauser effect sustains the stability of the nuclear self-polarization even in the absence of spin polarization of the quantum dot electron. As a result the optically selected single quantum dot represents a tiny magnet with the ferromagnetic ordering of nuclear spins-the nuclear spin nanomagnet. 相似文献
6.
Udut V. N. Shakhov A. D. Shubin G. S. Korenev K. D. 《Russian Journal of General Chemistry》2011,81(12):2619-2623
Cryogenic technologies for combined extraction of commercial products, including helium, from associated petroleum gases with
minimum energy costs and capital investments were described. The Geliimash Scientific and Production Association, Open Joint-Stock
Company, undertakes the manufacture of the whole range of equipment for these technologies. 相似文献
7.
D. Yu. Naumov A. V. Virovets S. V. Korenev A. I. Gubanov 《Acta Crystallographica. Section C, Structural Chemistry》1999,55(8):IUC9900097-IUC9900097
8.
9.
M. N. Sokolov V. S. Korenev E. V. Peresypkina V. P. Fedin 《Journal of Structural Chemistry》2010,51(5):984-986
By heating in the air [HBW11O39]8− with [Rh2(CH3COO)4(H2O)2] in the excess of tungstate followed by crystallization in the presence of CsCl, a double salt of Cs8[6h-BW12O40][RhCl6]·5.5H2O is obtained and structurally characterized. Its crystal structure is determined by single crystal X-ray diffraction. The
structure is ionic with Cs+ cations, [BW12O40]5 anions with the Keggin structure, and [RhCl6]3 octahedral anions. 相似文献
10.
D. B. Vasil’chenko E. Yu. Filatov I. A. Baidina P. E. Plyusnin S. V. Korenev 《Russian Journal of Coordination Chemistry》2010,36(5):347-352
Three novel complex salts containing the cation trans-[Rh(β-Pic)4Cl2]+ with the anions Cl− (I), ReO4− (II), and ClO4− (III) were obtained and characterized by elemental analysis, X-ray diffraction, NMR spectroscopy, and IR spectroscopy. The complex
trans-[Rh(β-Pic)4Cl2]ReO4 crystallizes from DMF as a solvate in which solvent molecules fill the channels formed by the cations and anions. The thermal
properties of complexes I, II, and II · DMF were examined by DTA. Final and some intermediate products of the thermolysis were isolated and characterized by physicochemical
methods. 相似文献