全文获取类型
收费全文 | 475篇 |
免费 | 6篇 |
国内免费 | 2篇 |
专业分类
化学 | 252篇 |
晶体学 | 7篇 |
力学 | 8篇 |
数学 | 95篇 |
物理学 | 121篇 |
出版年
2022年 | 2篇 |
2021年 | 5篇 |
2020年 | 12篇 |
2019年 | 6篇 |
2018年 | 4篇 |
2017年 | 4篇 |
2016年 | 10篇 |
2015年 | 12篇 |
2014年 | 7篇 |
2013年 | 21篇 |
2012年 | 34篇 |
2011年 | 36篇 |
2010年 | 19篇 |
2009年 | 18篇 |
2008年 | 24篇 |
2007年 | 45篇 |
2006年 | 31篇 |
2005年 | 16篇 |
2004年 | 16篇 |
2003年 | 16篇 |
2002年 | 21篇 |
2001年 | 18篇 |
2000年 | 12篇 |
1999年 | 6篇 |
1998年 | 5篇 |
1997年 | 6篇 |
1996年 | 6篇 |
1995年 | 7篇 |
1994年 | 6篇 |
1993年 | 9篇 |
1992年 | 3篇 |
1991年 | 2篇 |
1990年 | 6篇 |
1989年 | 5篇 |
1988年 | 6篇 |
1987年 | 3篇 |
1986年 | 6篇 |
1985年 | 1篇 |
1984年 | 1篇 |
1983年 | 1篇 |
1982年 | 1篇 |
1980年 | 4篇 |
1979年 | 1篇 |
1978年 | 3篇 |
1977年 | 1篇 |
1974年 | 1篇 |
1973年 | 3篇 |
1971年 | 1篇 |
排序方式: 共有483条查询结果,搜索用时 31 毫秒
41.
42.
Emilio Calvo 《International Journal of Game Theory》2008,37(4):533-563
We propose two variations of the non-cooperative bargaining model for games in coalitional form, introduced by Hart and Mas-Colell
(Econometrica 64:357–380, 1996a). These strategic games implement, in the limit, two new NTU-values: the random marginal and
the random removal values. Their main characteristic is that they always select a unique payoff allocation in NTU-games. The
random marginal value coincides with the Consistent NTU-value (Maschler and Owen in Int J Game Theory 18:389–407, 1989) for
hyperplane games, and with the Shapley value for TU games (Shapley in In: Contributions to the theory of Games II. Princeton
University Press, Princeton, pp 307–317, 1953). The random removal value coincides with the solidarity value (Nowak and Radzik
in Int J Game Theory 23:43–48, 1994) in TU-games. In large games we show that, in the special class of market games, the random
marginal value coincides with the Shapley NTU-value (Shapley in In: La Décision. Editions du CNRS, Paris, 1969), and that
the random removal value coincides with the equal split value.
相似文献
43.
L. Calvo Blazquez J. Rodriguez Flores F. Vinagre Jara A. Sanchez Misiego 《Journal of Chemical Sciences》1989,101(5):415-419
The electroanalytical behaviour of orotic acid in cathodic processes has been studied in HClO4, at several pH values in Britton-Robinson buffers, using DPP and CV techniques.
Orotic acid undergoes three cathodic waves over the entire pH range considered. Optimum conditions for determination of orotic
acid using the DPP technique are also studied. 相似文献
44.
David Semrouni O. Petru Balaj Florent Calvo Catarina F. Correia Carine Clavaguéra Gilles Ohanessian 《Journal of the American Society for Mass Spectrometry》2010,21(5):728-738
The structure of the sodiated peptide GGGGGGGG-Na+ or G8-Na+ was investigated by infrared multiple photon dissociation (IRMPD) spectroscopy and a combination of theoretical methods.
IRMPD was carried out in both the fingerprint and N—H/O—H stretching regions. Modeling used the polarizable force field AMOEBA
in conjunction with the replica-exchange molecular dynamics (REMD) method, allowing an efficient exploration of the potential
energy surface. Geometries and energetics were further refined at B3LYP-D and MP2 quantum chemical levels. The IRMPD spectra
indicate that there is no free C-terminus OH and that several N—Hs are free of hydrogen bonding, while several others are
bound, however not very strongly. The structure must then be either of the charge solvation (CS) type with a hydrogen-bound
acidic OH, or a salt bridge (SB). Extensive REMD searches generated several low-energy structures of both types. The most
stable structures of each type are computed to be very close in energy. The computed energy barrier separating these structures
is small enough that G8-Na+ is likely fluxional with easy proton transfer between the two peptide termini. There is, however, good agreement between
experiment and computations in the entire spectral range for the CS isomer only, which thus appears to be the most likely
structure of G8-Na+ at room temperature. 相似文献
45.
Tagliazucchi M Williams FJ Calvo EJ 《Chemical communications (Cambridge, England)》2010,46(47):9004-9006
We present polyelectrolyte multilayer modified electrodes exhibiting novel chemically responsive redox behaviour due to the combination of both redox and metal-ion-ligand functionalities on the same sites. 相似文献
46.
Jos Nicanor ALONSO LVAREZ Ramón GONZLEZ RODRIGUEZ Carlos SONEIRA CALVO 《数学学报(英文版)》2014,30(4):567-590
In this paper,we introduce several centralizer constructions in a monoidal context and establish a monoidal equivalence with the category of Yetter–Drinfeld modules over a weak braided Hopf monoid.We apply the general result to the calculus of the center in module categories. 相似文献
47.
48.
Sotero Alvarado Jorge Alberto Calvo Kenneth C. Millett 《Journal of statistical physics》2011,143(1):102-138
Freely jointed random equilateral polygons serve as a common model for polymer rings, reflecting their statistical properties
under theta conditions. To generate equilateral polygons, researchers employ many procedures that have been proved, or at
least are believed, to be random with respect to the natural measure on the space of polygonal knots. As a result, the random
selection of equilateral polygons, as well as the statistical robustness of this selection, is of particular interest. In
this research, we study the key features of four popular methods: the Polygonal Folding, the Crankshaft Rotation, the Hedgehog,
and the Triangle Methods. In particular, we compare the implementation and efficacy of these procedures, especially in regards
to the population distribution of polygons in the space of polygonal knots, the distribution of edge vectors, the local curvature,
and the local torsion. In addition, we give a rigorous proof that the Crankshaft Rotation Method is ergodic. 相似文献
49.
We study the large time asymptotics of a simplified two species model for particles (typically molecules or cells). The particles can be in two states: A “free” state where they simply move with a given velocity or an aggregated state where they do not move anymore. We show that depending only on the strength of the interaction between particles, either all of them eventually coagulate or some may escape. 相似文献
50.