全文获取类型
收费全文 | 326篇 |
免费 | 0篇 |
专业分类
化学 | 290篇 |
力学 | 4篇 |
数学 | 8篇 |
物理学 | 24篇 |
出版年
2022年 | 4篇 |
2021年 | 4篇 |
2020年 | 9篇 |
2019年 | 6篇 |
2018年 | 10篇 |
2017年 | 11篇 |
2016年 | 13篇 |
2015年 | 7篇 |
2014年 | 6篇 |
2013年 | 24篇 |
2012年 | 21篇 |
2011年 | 9篇 |
2010年 | 14篇 |
2009年 | 13篇 |
2008年 | 14篇 |
2007年 | 6篇 |
2006年 | 9篇 |
2005年 | 19篇 |
2004年 | 15篇 |
2003年 | 12篇 |
2002年 | 6篇 |
2001年 | 4篇 |
1998年 | 8篇 |
1997年 | 3篇 |
1996年 | 2篇 |
1995年 | 2篇 |
1994年 | 3篇 |
1992年 | 2篇 |
1990年 | 3篇 |
1989年 | 4篇 |
1988年 | 6篇 |
1987年 | 3篇 |
1986年 | 1篇 |
1985年 | 3篇 |
1984年 | 3篇 |
1983年 | 3篇 |
1982年 | 4篇 |
1981年 | 2篇 |
1980年 | 3篇 |
1979年 | 3篇 |
1978年 | 3篇 |
1977年 | 4篇 |
1976年 | 4篇 |
1975年 | 1篇 |
1974年 | 4篇 |
1973年 | 5篇 |
1971年 | 5篇 |
1970年 | 1篇 |
1963年 | 1篇 |
1961年 | 3篇 |
排序方式: 共有326条查询结果,搜索用时 31 毫秒
1.
N. K. Gusarova B. A. Trofimov T. N. Rakhmatulina S. F. Malysheva S. N. Arbuzova S. I. Shaikhudinova A. I. Albanov 《Russian Chemical Bulletin》1994,43(9):1591-1592
The reaction of styrene and -methylstyrene with P in aprotic polar solvents in the presence of KOH affords diorganylphosphinous acids.Translated fromIzvestiya Akademii Nauk. Seriya Khimicheskaya, No. 9, pp. 1680–1681, September, 1994. 相似文献
2.
V. M. Zhulin N. N. Malysheva Z. G. Makarova E. M. Klimov N. K. Kochetkov 《Russian Chemical Bulletin》1990,39(9):1940-1942
The polycondensation of 1,2-0-exo-cyanethylidene-4,6-di-0-acetyl-3-0-trityl--D-glucopyranose (I) was accomplished in the presence of triphenylmethylium perchlorate in CH2Cl2 under the pressure of 14 kbar. The reaction was performed in the frozen solution after the phasic transition of the system, and led to the product of polycondensation which, after the removal of the protecting groups, gave the exactly regio- and stereo-regular -(1–3)-D-glucan.Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 9, pp. 2129–2132, September, 1990. 相似文献
3.
T. G. Kuznetsova K. G. Ione L. V. Malysheva 《Reaction Kinetics and Catalysis Letters》1998,63(1):61-66
Gas phase nitration of benzene on ZSM-5 zeolite has been studied at 140–170°C. Increase in the HNO3/C6H6 ratio of the starting mixture was shown to increase the nitrobenzene yield. Process parameters worsened with time since reagents
and products were strongly adsorbed and left the zeolite surface only at 220–250°C as CO, CO2 and NO. 相似文献
4.
5.
Trofimov B. A. Malysheva S. F. Gusarova N. K. Tatarinova A. A. Henkelmann J. 《Russian Journal of Organic Chemistry》2003,39(9):1356-1357
Russian Journal of Organic Chemistry - 相似文献
6.
N. A. Malysheva A. I. Prokof'ev N. N. Bubnov S. P. Solodovnikov T. I. Prokof'eva V. B. Vol'eva V. V. Ershov M. I. Kabachnik 《Russian Chemical Bulletin》1988,37(5):907-914
1. | Conformational transitions characteristic of nonplanar rings were detected in the radical-cation of the 3,6-di-tert-butylpyrocatechol ester of ethylene glycol. |
2. | Cyclic radical-cations are formed during the oxidation of 2-acyloxyphenols. |
7.
8.
S. F. Malysheva N. K. Gusarova N. A. Belogorlova A. V. Afonin S. N. Arbuzova B. A. Trofimov 《Russian Chemical Bulletin》1997,46(10):1799-1801
Diorganylvinylphosphine oxides were synthesized in 31–38% yields on heating (50°C) diorganylphosphine oxides with vinyl sulfoxides
or divinyl sulfone in the presence of KOH.
Translated fromIzvestiya Akademii Nauk. Seriya Khimicheskaya, No. 10, pp. 1895–1896, October, 1997. 相似文献
9.
The pentasaccharide α - Tyv - (1→3) - β - d - Man - (1→4) - α - l - Rha - (1→3) - d - Gal - (4←1) -α - d - Glc 1, the repeating unit of the O-specific polysaccharide chain of the lipopolysaccharide from S. Strasbourg, was obtained by glycosylation of benzyl - 2,6 - di - O - benzyl - 4 - O - (2,3,4 - tri - O - benzyl - 6 - O - benzoyl - α - d - glucopyranosyl) - β - d - galactopyranoside with 1,2 - methylorthoacetyl - 3 - O - acetyl - 4- O - [3 - O - (2,4 - di - O - acetyl - 3, 6 - dideoxy,- α - d - arabino - hexopyranosyl) - 2,4,6 - tri - O - acetyl - β - d - mannopyranosyl] - β - l - rhamnopyranose 3 followed by removal of protecting groups. The structure of the synthetic pentasaccharide was proved by methylation analysis and 13C NMR. 相似文献
10.
Boris A TrofimovSvetlana F Malysheva Boris G SukhovNatal'ya A Belogorlova Elena Yu SchmidtLyubov N Sobenina Vladimir A KuimovNina K Gusarova 《Tetrahedron letters》2003,44(13):2629-2632
Secondary phosphines 1-3 react readily with N-vinylpyrroles 4 and 5 under radical initiation to give regiospecifically anti-Markovnikov adducts, diorganyl-2-(1-pyrrolyl)ethylphosphines 6a-d, highly reactive building blocks for organic synthesis, in 88-91% yields. 相似文献