全文获取类型
收费全文 | 205篇 |
免费 | 2篇 |
专业分类
化学 | 158篇 |
力学 | 7篇 |
数学 | 23篇 |
物理学 | 19篇 |
出版年
2022年 | 1篇 |
2021年 | 1篇 |
2020年 | 1篇 |
2019年 | 1篇 |
2018年 | 9篇 |
2017年 | 1篇 |
2016年 | 10篇 |
2015年 | 4篇 |
2014年 | 6篇 |
2013年 | 11篇 |
2012年 | 7篇 |
2011年 | 13篇 |
2010年 | 7篇 |
2009年 | 15篇 |
2008年 | 10篇 |
2007年 | 11篇 |
2006年 | 12篇 |
2005年 | 5篇 |
2004年 | 9篇 |
2003年 | 5篇 |
2002年 | 5篇 |
2001年 | 3篇 |
2000年 | 3篇 |
1999年 | 1篇 |
1998年 | 4篇 |
1997年 | 3篇 |
1996年 | 3篇 |
1995年 | 1篇 |
1994年 | 2篇 |
1993年 | 5篇 |
1992年 | 4篇 |
1991年 | 5篇 |
1990年 | 4篇 |
1989年 | 3篇 |
1988年 | 2篇 |
1983年 | 1篇 |
1982年 | 3篇 |
1981年 | 1篇 |
1980年 | 2篇 |
1979年 | 2篇 |
1977年 | 4篇 |
1975年 | 1篇 |
1974年 | 2篇 |
1973年 | 1篇 |
1972年 | 1篇 |
1967年 | 1篇 |
1966年 | 1篇 |
排序方式: 共有207条查询结果,搜索用时 437 毫秒
31.
32.
A. S. Balueva E. R. Mustakimov G. N. Nikonov Yu. T. Struchkov A. P. Pisarevsky R. R. Musin 《Russian Chemical Bulletin》1996,45(1):174-179
N-Phenyl-C,C-diphenylketenimine adds toZ-1-butyl-I-dibutylboryl-2-diphenylphosphino-2-phenylethene to give 2,2,3-tributyl-6-diphenylmethylideno-1,4,5,5-tetraphenyl-1-aza-5-phosphonia-2-borataeyclohex-3-ene, which rearranges into 4,6-dibutyl-2-diphenylphosphino-1,1,3,5-tetraplienyl-3-aza-4-boradeca-1,5-diene upon heating. Its crystal structure has been established by X-ray analysis.Deceased in 1995.Translated from IIzvestiya Akademii Nauk. Seriya Khimicheskaya, No. l, pp. 183–187, January, 1996. 相似文献
33.
A. S. Balueva E. R. Mustakimov G. N. Nikonov A. P. Pisarevskii Yu. T. Struchkov I. A. Litvinov R. R. Musin 《Russian Chemical Bulletin》1996,45(8):1965-1969
A new betaine, 5,6,6-tributyl-2-diphenylmethylene-3,3,4-triphenyl-1-oxa-3-phosphonia-6-boratacyclohex-4-ene, and1-(benzoyl(phenyl)methyleneamino]-4,5,5-tributyl-2,2,3-triphenyl-2-phospha-I-azonia-5-boratacyclopenta-1,3-diene were synthesized upon interaction of E-2-dibutylboryl-1-phenyl-1-diphenylphosphinohex-1-ene with diphenylketene and benzoyl(phenyl)diazomethane, respectively. The structure of the latter product was established by IR spectroscopy and X-ray structural analysis.DeceasedTranslated fromIzvestiya Akademii Nauk. Seriya Khimicheskaya, No. 8, pp. 2070–2074, August, 1996 相似文献
34.
35.
A. M. Kibardin T. Kh. Gazizov Yu. Ya. Efremov V. N. Zinin R. Z. Musin A. N. Pudovik 《Russian Chemical Bulletin》1980,29(4):656-660
Conclusions Trialkyl phosphites react with 1,1,1-trifluoroacetone to give 2,2,2-trialkoxy-3,5-dimethyl-3,5-bis(trifluoromethyl)-1,4,2-dioxaphospholanes, which slowly isomerize to trialkoxy--trifluoromethyl--(1-methyl-2,2-difluorovinyloxy)ethoxyfluorophosphoranes.Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 4, pp. 910–914, April, 1980. 相似文献
36.
We present a sufficient condition for the surjectivity of a linear differential operator of infinite order with constant coefficients in a weighted space of infinitely differentiable functions on the real line. 相似文献
37.
Russian Physics Journal - Connection of Pauli’s principle with the nontrivial structure of the fermion supertime is shown. When supersymmetry is localized as supergravitation, fields of... 相似文献
38.
R. G. Tagasheva E. R. Shakirova S. V. Bukharov I. V. Galkina G. K. Ziyatdinova R. Z. Musin I. Kh. Rizvanov 《Russian Journal of General Chemistry》2018,88(1):68-72
New multifunctional antioxidants based on carboxy- and sulfobetaines with sterically hindered phenol fragments were synthesized. The antioxidant capacity of the compounds determined in the reactions of their oxidation by electrogenerated bromine is comparable to that of ascorbic acid and ionol. 相似文献
39.
New investigations on ferrofluidics: ferrofluidic marbles and magnetic-field-driven drops on superhydrophobic surfaces 总被引:2,自引:0,他引:2
Bormashenko E Pogreb R Bormashenko Y Musin A Stein T 《Langmuir : the ACS journal of surfaces and colloids》2008,24(21):12119-12122
The motion of ferrofluidic marbles on flat polymer substrates is reported. Nanopowders of polyvinylidene fluoride and gammaFe2O3 were used for the preparation of ferrofluidic marbles. The marbles are activated easily with an external magnetic field. A microfluidic device based on ferrofluidic marbles (the ferrofluidic bearing) is described. Velocities of marbles as high as 25+/-3 cm/s were registered. The sliding of ferrofluidic drops on superhydrophobic surfaces was studied. It was demonstrated that the threshold magnetic force necessary for the drop displacement depends linearly on the drop radius, thus the motion of the drop is defined by the processes occurring in the vicinity of the triple line only. 相似文献
40.
I. Yu. Strobykina B. F. Garifullin G. I. Kovylyaeva R. Z. Musin A. T. Gubaidullin V. E. Kataev 《Russian Journal of General Chemistry》2007,77(6):1066-1068
New macrocyclic compounds were synthesized by reaction of 16-hydroxy-ent-beyeran-19-oic acid (derivative of the diterpenoid isosteviol with reduced ketone group) with adipic, suberic, and sebacic acid chlorides. 相似文献