全文获取类型
收费全文 | 98篇 |
免费 | 0篇 |
专业分类
化学 | 63篇 |
数学 | 21篇 |
物理学 | 14篇 |
出版年
2019年 | 1篇 |
2018年 | 4篇 |
2017年 | 3篇 |
2016年 | 4篇 |
2014年 | 3篇 |
2013年 | 5篇 |
2012年 | 3篇 |
2011年 | 9篇 |
2010年 | 3篇 |
2009年 | 9篇 |
2008年 | 2篇 |
2007年 | 6篇 |
2006年 | 1篇 |
2005年 | 3篇 |
2004年 | 3篇 |
2003年 | 1篇 |
2002年 | 4篇 |
2001年 | 1篇 |
2000年 | 5篇 |
1999年 | 4篇 |
1998年 | 2篇 |
1996年 | 1篇 |
1988年 | 2篇 |
1986年 | 1篇 |
1984年 | 3篇 |
1983年 | 1篇 |
1982年 | 1篇 |
1981年 | 3篇 |
1966年 | 1篇 |
1965年 | 1篇 |
1964年 | 2篇 |
1963年 | 4篇 |
1962年 | 2篇 |
排序方式: 共有98条查询结果,搜索用时 46 毫秒
1.
T. G. Elizarova A. V. Zherikov I. S. Kalachinskaya Yu. V. Sheretov 《Computational Mathematics and Modeling》2004,15(1):52-68
A new quasi-hydrodynamic algorithm is proposed for numerical analysis of convective flows in the presence of a homogeneous external magnetic field. The Marangoni convection problem in a square cross-section cavity is solved. 相似文献
2.
The electroreduction of gadolinium from a eutectic KCl–KF melt containing 0.210–1.233 wt % Gd2O3 on molybdenum and glassy carbon electrodes is studied at 1008 K. The solubility of gadolinium oxide is determined. It is shown that the reduction of a gadolinium oxyfluoride complex proceeds reversibly, with a subsequent reversible chemical reaction. The gadolinium reduction on an iron electrode in a eutectic KCl–KF melt purified of unwanted oxide ion impurities yields an iron-gadolinium alloy. 相似文献
3.
G. L. Elizarova L. G. Matvienko N. V. Lozhkina V. N. Parmon 《Reaction Kinetics and Catalysis Letters》1988,36(2):331-336
Catalysts of water oxidation to dioxygen by Ru(bpy)
3
3+
have been obtained by immobilization of colloidal Co(III) hydroxide on supports of the hydroxide types. These supports are found to be able either to enhance (Al(III), Bi(III), Sn(IV) and Ce(IV) hydroxides) or to weaken (Fe(III) and Mn(IV) hydroxides) the catalytic efficiency of the initial sol. The possible nature of the influence of the support is discussed.
Ru(bpy) 3 3+ Co(III). - , ( Al(III), Bi(III), Sn(IV), Ce(IV)), ( Fe(III), Mn(IV)) . .相似文献
4.
R. N. Elizarova A. D. Kuzovkov P. N. Kibal'chich A. I. Shreter 《Chemistry of Natural Compounds》1966,1(6):337-338
Summary A previously unknown crystalline substance C20H28O4, calledplectrin, has been isolated from the leaves ofPlectranthus glaucocalyx Maxim., family Labiatae.Khimiya Prirodnykh Soedinenii, Vol. 1, No. 6, pp. 427–428, 1965 相似文献
5.
G. L. Elizarova L. G. Matvienko N. V. Lozhkina V. N. Parmon K. I. Zamaraev 《Reaction Kinetics and Catalysis Letters》1981,16(2-3):191-194
Complexes of Co, Cu and Fe with bipyridyl, and cobalt complexes with ammonia, ethylenediamine and oxyacids are shown to be efficient catalysts for water oxidation by Ru(bpy)
3
3+
in both alkaline and weakly acidic media. Partially hydrolyzed forms of these complexes are assumed to be active.
, Ru(bpy) 3 3+ , Co, Cu Fe, , . , .相似文献
6.
N. E. Gordina V. Yu. Prokof’ev T. N. Borisova A. M. Elizarova 《Russian Journal of Applied Chemistry》2018,91(2):180-186
Possibility was examined of synthesizing zeolites granulated without a binder with the use of a preliminary ultrasonic treatment of the suspension at a frequency of 22 kHz from mixtures of sodium metasilicate and aluminum and silicon oxides with various Si: Al ratios. It was found that, after the preliminary treatment, extrusion of grains, and calcination at 650°C, crystalline phases Na6Al4Si4O17, Na8Al4Si4O18, Na2Al2O4, and Na2SiO3 phases are formed in the sample with Si: Al = 1. These phases are precursors for synthesis of NaA and NaP zeolites and sodalite via hydrothermal crystallization in a NaOH solution with concentration of 2 M. Upon a similar treatment of a sample with Si: Al = 2, there are crystalline phases α- and β-Na2Si2O5, from which only NaP zeolite is formed in the course of crystallization. The hydrothermal crystallization in a 6 M alkali solution yields sodalite, irrespective of the Si: Al ratio. It was shown that an ultrasonic treatment gives a gel-like system at Si: Al = 1 and a powdered material at Si: Al = 2, which yields by the end of synthesis samples with cactus-like or wool-like morphology, respectively. 相似文献
7.
8.
E. P. Lokshin O. A. Tareeva I. R. Elizarova 《Russian Journal of Applied Chemistry》2013,86(5):623-628
It is shown that an increase in the recovery of rare earth elements in fluorophosphate concentrates, which are obtained by treating the wet process phosphoric acid by ammonium fluoride, is achieved by prior partial neutralization of H3PO4 by ammonia. Therewith the consumption of ammonium fluoride is reduced that provides almost complete precipitation of rare earth elements. 相似文献
9.
10.
Elizarova G. L. Odegova G. V. Matvienko L. G. Talsi E. P. Kolomiichuk V. N. Parmon V. N. 《Kinetics and Catalysis》2003,44(2):211-220
In the interaction with H2O2 in an alkaline medium, Cu(OH)2 forms terminal Cu–OOH and bridging peroxo complexes with the -1,1 and -2:2 structures. It was found that the terminal peroxide is active in the reactions of H2O2 decomposition, diphenol oxidation, and nitrile conversion into acid amides. The promoting effect of ammonia on these reactions was found. A possible mechanism is discussed. 相似文献