全文获取类型
收费全文 | 267篇 |
免费 | 0篇 |
专业分类
化学 | 254篇 |
力学 | 1篇 |
数学 | 1篇 |
物理学 | 11篇 |
出版年
2022年 | 2篇 |
2021年 | 4篇 |
2020年 | 7篇 |
2019年 | 6篇 |
2018年 | 10篇 |
2017年 | 4篇 |
2016年 | 9篇 |
2015年 | 8篇 |
2014年 | 6篇 |
2013年 | 22篇 |
2012年 | 14篇 |
2011年 | 10篇 |
2010年 | 17篇 |
2009年 | 16篇 |
2008年 | 18篇 |
2007年 | 6篇 |
2006年 | 6篇 |
2005年 | 10篇 |
2004年 | 13篇 |
2003年 | 11篇 |
2002年 | 10篇 |
2001年 | 11篇 |
2000年 | 3篇 |
1998年 | 2篇 |
1997年 | 2篇 |
1996年 | 1篇 |
1995年 | 1篇 |
1994年 | 1篇 |
1991年 | 2篇 |
1990年 | 1篇 |
1989年 | 3篇 |
1988年 | 1篇 |
1987年 | 1篇 |
1986年 | 3篇 |
1985年 | 4篇 |
1984年 | 1篇 |
1983年 | 2篇 |
1982年 | 4篇 |
1981年 | 2篇 |
1980年 | 2篇 |
1979年 | 1篇 |
1978年 | 2篇 |
1977年 | 2篇 |
1976年 | 1篇 |
1975年 | 2篇 |
1972年 | 1篇 |
1971年 | 2篇 |
排序方式: 共有267条查询结果,搜索用时 15 毫秒
251.
Gusarova A. V. Chumaevskii A. V. Zykova A. P. Gur’yanov D. A. Kalashnikov K. N. Kalashnikova T. A. 《Russian Physics Journal》2020,63(7):1179-1185
Russian Physics Journal - The structure of samples of the C27400 copper alloy coatings on the AA5056 aluminum alloy surface, produced by friction stir processing of a rolled sheet package is... 相似文献
252.
Verkhoturova S. I. Arbuzova S. N. Kazantseva T. I. Gusarova N. K. Trofimov B. A. 《Russian Journal of General Chemistry》2017,87(8):1876-1878
Russian Journal of General Chemistry - Alkyl methanesulfonates were for the first time introduced in the reaction of direct phosphorylation of electrophiles with elemental phosphorus in strongly... 相似文献
253.
254.
255.
256.
257.
A. V. Artem’ev S. F. Malysheva N. K. Gusarova B. A. Trofimov 《Russian Journal of General Chemistry》2011,81(7):1449-1452
The four-component reaction between secondary phosphines R2PH (R = arylalkyl, hetarylalkyl), elemental selenium, diethylamine, and heavy metal acetates M(OAc)
n
(M = Ni, Zn, Cd, Sn, Hg, Pb, Bi) proceeds under mild conditions (22–55°C, 0.5 h, EtOH) with the formation of the corresponding
diselenophosphinates M(Se2PR2)
n
in 55–90% yield. 相似文献
258.
L. V. Baikalova V. I. Sokol N. N. Chipanina N. I. Ivanova N. K. Gusarova A. V. Afonin P. N. Andreev V. S. Sergienko B. A. Trofimov 《Russian Journal of Coordination Chemistry》2008,34(7):480-492
The reactions of Zn(II), Cd(II), Cu(II), Co(II), Pd(II) dichlorides with 2-[bis(2-phenylethyl)thiophosphorylhydroxymethyl]-1-organilimidazoles (L1–L4) were studied. The novel complexes were synthesized and characterized by IR and NMR spectroscopies. Depending on the nature of imidazolephosphinesulfide, both monodentate (at the “pyridine” N(1) atom of heterocycle) and the N,S-bidentate binding of the ligand by a metal can be realized in the above metal complexes. The structure of the complex ZnCl2 · 2L4(I) (L4 = 2-[bis(2-phenylethyl)thiophosphorylhydroxymethyl]-1-ethylbenzimidazole) was studied by X-ray diffraction. One of the two independent L4 molecules performs the solvate function, while another one, together with two Cl atoms, is coordinated through the atoms N(1) and S to the Zn atom at the vertices of a slightly distorted tetrahedron. The molecule of the complex is united with the solvate molecule into [ZnCl2L4]L4 associates by strong intermolecular hydrogen bonds to give nonplanar four-membered H-cycle OH2N. 相似文献
259.
N. A. Chernysheva N. K. Gusarova S. V. Yas’ko L. M. Sinegovskaya B. A. Trofimov 《Russian Journal of General Chemistry》2008,78(5):933-938
Sodium sulfide and polysulfides readily (50–55°C, 3 h, aqueous medium) react with alkyl vinyl sulfoxides to afford bis(alkylsulfinylethyl)sulfides and-polysulfides in up to 75% yield. Under comparable conditions the reaction of divinyl sulfoxide with sodium sulfide proceeds by the mechanism of addition-cyclization and results in 1,4-dithiane-1-oxide and 1,4-oxathiane-4-oxide. Microwave activation of the studied reactions allows to increase their rate and efficiency. 相似文献
260.
Vladimir A. Kuimov Svetlana F. Malysheva Nina K. Gusarova Tamara I. Vakul'skaya Spartak S. Khutsishvili Boris A. Trofimov 《Heteroatom Chemistry》2011,22(2):198-203
Red phosphorus reacts with 1‐bromonaphthalene in the KOH–DMSO system upon heating (47–70°C, 3 h) to give tri(1‐naphthyl)phosphane in 10% yield. Microwave activation (600 W, 6 min) of the reaction affords the above‐mentioned phosphane in 25% yield. © 2011 Wiley Periodicals, Inc. Heteroatom Chem 22:198–203, 2011; View this article online at wileyonlinelibrary.com . DOI 10.1002/hc.20671 相似文献