全文获取类型
收费全文 | 54篇 |
免费 | 9篇 |
专业分类
化学 | 27篇 |
力学 | 1篇 |
数学 | 29篇 |
物理学 | 6篇 |
出版年
2022年 | 1篇 |
2021年 | 4篇 |
2020年 | 3篇 |
2019年 | 5篇 |
2018年 | 6篇 |
2017年 | 4篇 |
2016年 | 3篇 |
2015年 | 3篇 |
2014年 | 3篇 |
2013年 | 2篇 |
2011年 | 1篇 |
2007年 | 1篇 |
2006年 | 2篇 |
2005年 | 2篇 |
2004年 | 2篇 |
2003年 | 4篇 |
2002年 | 1篇 |
2001年 | 1篇 |
1997年 | 3篇 |
1991年 | 4篇 |
1990年 | 1篇 |
1988年 | 1篇 |
1987年 | 1篇 |
1985年 | 1篇 |
1975年 | 1篇 |
1974年 | 1篇 |
1970年 | 2篇 |
排序方式: 共有63条查询结果,搜索用时 46 毫秒
41.
Wen Li Dongdong Liu Michael K. Ng Seak‐Weng Vong 《Numerical Linear Algebra with Applications》2017,24(6)
The uniqueness of multilinear PageRank vectors is discussed, and the new uniqueness condition is given. The new results are better than the one given in the work of Gleich et al. published in SIAM J Matrix Anal Appl. 2015;36;1409‐1465. Numerical examples are given to demonstrate the new theoretical results. 相似文献
42.
In this paper, we study the global uniqueness and solvability (GUS-property) of tensor complementarity problems (TCPs) for some special structured tensors. The modulus equation for TCPs is also proposed, and based on this equation, we develop the corresponding nonsmooth Newton’s method, which extends the existing method given in the work of Zheng H and Li W. The modulus-based nonsmooth Newton’s method for solving linear complementarity problems. J Comput Appl Math. 2015;288: 116-126. Numerical examples are given to demonstrate the efficiency of the proposed algorithm. 相似文献
43.
In this paper, we study some Ostrowski-like type inequalities proposed by Huy and Ngô. We give some improvements of these inequalities which are inspired by a result established recently. 相似文献
44.
45.
N, N-bis(pyrazol-1-ylmethyl)aminomethane (bpam) and N, N-bis(3, 5-dimethylpyrazol-1-ylmethyl)aminomethane (bdmpam) reacted with M(CO)6 or M(CO)3(CH3CN)3 in acetonitrile to give respectively fac-(bpam)M(CO)3 and fac-(bdmpam)M(CO)3 in good yields (M=Cr, Mo, W). These complexes are characterized by elemental analysis, IR, and NMR and compared with the related polypyrazolylborate complexes of the group VI metal carbonyls. 相似文献
46.
47.
Baron A Sandford G Slater R Yufit DS Howard JA Vong A 《The Journal of organic chemistry》2005,70(23):9377-9381
[Reaction: see text]. Polyfunctional tetrahydropyrido[2,3-b]pyrazine scaffolds can be synthesized by sequential reaction of pentafluoropyridine with sodium phenylsulfinate and an appropriate diamine. The polyfunctionality possessed by the difluorinated tetrahydropyrido[2,3-b]pyrazine scaffolds was demonstrated in selected model reactions with nucleophiles to give access to various polysubstituted [6,6]-ring fused systems. 相似文献
48.
A. L. Boyce S. R. Graville P. A. Sermon M. S. W. Vong 《Reaction Kinetics and Catalysis Letters》1991,44(1):13-18
The pyrolysis of methyl t-butyl sulfide has been studied in a stirred-flow system. Isobutene and methanethiol were the main reaction products. The first order rate coefficients yielded Ea=238±4 kJ mol–1, log A=14.49±0.28 between 509 and 540°C.
-- . . 509–540°C Ea=238±4 / log A=14,49±0,28.相似文献
49.
A. L. Boyce S. R. Graville P. A. Sermon M. S. W. Vong 《Reaction Kinetics and Catalysis Letters》1991,44(1):1-11
For CuO/ZnO reduction has been shown [M. S. W. Vong et al., Catal. Lett.,4, 15 (1990)] to be faster and more extensive with CO than by H2 and here this is shown to be the case for CuO itself, this being so then it may be preferable to characterize CuO-containing catalysts by temperature-programmed reduction with CO than with H2. The activation energies of reduction (57–82 kJ/mol) are those expected for chemical reduction, but it is an important finding that the order with respect to hydrogen partial pressure (0.04) is extremely low and far removed from the value of unity often assumed. Different samples of CuO exhibit different reduction characteristics.
CuO/ZnO, (Vong, M. S. W. et al., Catal. Lett. (in press)), CO, H2. , CuO. CO , CuO, . Cu2O , . . . (57–82 /) , . ,相似文献
50.
Hydrogen evolution on a platinum cathode taking place in Na2SO4 as electrolyte, is catalyzed by the formation of samarium hydroxide deposited on platinum. It is shown by voltammetric experiments that the quantity of adsorbed hydrogen is greater with samarium than without it and the H2O reduction reaction is an irreversible process due, presumably, to a reaction between the adsorbed hydrogen and samarium hydroxide.
Na2SO4, , . , , H2O .相似文献