全文获取类型
收费全文 | 586篇 |
免费 | 9篇 |
专业分类
化学 | 308篇 |
晶体学 | 12篇 |
力学 | 13篇 |
数学 | 87篇 |
物理学 | 175篇 |
出版年
2017年 | 5篇 |
2016年 | 9篇 |
2015年 | 8篇 |
2014年 | 10篇 |
2013年 | 15篇 |
2012年 | 18篇 |
2011年 | 19篇 |
2010年 | 12篇 |
2009年 | 21篇 |
2008年 | 15篇 |
2007年 | 12篇 |
2006年 | 13篇 |
2005年 | 14篇 |
2004年 | 6篇 |
2003年 | 14篇 |
2002年 | 12篇 |
2001年 | 18篇 |
2000年 | 24篇 |
1999年 | 17篇 |
1998年 | 8篇 |
1997年 | 13篇 |
1996年 | 6篇 |
1995年 | 6篇 |
1994年 | 7篇 |
1993年 | 12篇 |
1992年 | 11篇 |
1990年 | 8篇 |
1989年 | 8篇 |
1988年 | 10篇 |
1987年 | 5篇 |
1986年 | 9篇 |
1985年 | 6篇 |
1984年 | 9篇 |
1983年 | 9篇 |
1982年 | 10篇 |
1981年 | 8篇 |
1980年 | 5篇 |
1978年 | 8篇 |
1968年 | 5篇 |
1966年 | 5篇 |
1933年 | 5篇 |
1932年 | 6篇 |
1930年 | 7篇 |
1929年 | 6篇 |
1927年 | 8篇 |
1926年 | 4篇 |
1925年 | 7篇 |
1924年 | 10篇 |
1923年 | 8篇 |
1913年 | 4篇 |
排序方式: 共有595条查询结果,搜索用时 0 毫秒
71.
72.
Ohne ZusammenfassungDie vorliegende Untersuchung wurde im Laboratorium für allgemeine Experimentalchemie und in jenem für analytische Chemie an der technischen Hochschule in Wien durchgeführt. Es ist uns eine angenehme Pflicht, den Vorständen dieser Institute, den Herren Professoren Dr. M. Bamberger und Dr. G. Vortmann für ihr stetes Entgegenkommen unseren wärmsten Dank zu sagen. 相似文献
73.
Summary LetP be a finite set of three or more noncollinear points in the plane. A line which contains two or more points ofP is called aconnecting line (determined byP), and we call a connecting lineordinary if it contains precisely two points ofP. Almost a century ago, Sylvester posed the disarmingly simple question:Must every set P determine at least one ordinary line? No solution was offered at that time and the problem seemed to have been forgotten. Forty years later it was independently rediscovered by Erdös, and solved by Gallai. In 1943 Erdös proposed the problem in the American Mathematical Monthly, still unaware that it had been asked fifty years earlier, and the following year Gallai's solution appeared in print. Since then there has appeared a substantial literature on the problem and its generalizations.In this survey we review, in the first two sections, Sylvester's problem and its generalization to higher dimension. Then we gather results about the connecting lines, that is, the lines containing two or more of the points. Following this we look at the generalization to finite collections of sets of points. Finally, the points will be colored and the search will be for monochromatic connecting lines. 相似文献
74.
T. Moser H. Glur V. Romano F. Pigeon O. Parriaux M. A. Ahmed T. Graf 《Applied physics. B, Lasers and optics》2005,80(6):707-713
Two novel methods to control the polarization of laser radiation are presented. The discrimination between different polarization distributions isperformed with a corrugation grating in the top high-index layer of a multilayer mirror, which couples the undesired polarization into a lossy waveguidemode of the multilayer. The generation of radially polarized radiation in a laser resonator is presented as a practical verification of the principle.This revised version was published online in May 2005. The Article Category was removed.This revised version was published online in August 2005 with a corrected cover date. 相似文献
75.
J. Moser 《Regular and Chaotic Dynamics》2008,13(6):499-513
Plenary lecture at the International Congress of Mathematicians (Berlin 1998, August 18–27). Reprinted from Doc. Math. J., DMV, Extra Volume ICM I, 1998, pp. 381–402. ©J.Moser, 1998. 相似文献
76.
77.
Using a molecular perturbation theory based on an equation of state for pure argon, excess properties and vapor-liquid equilibria are predicted for various binary mixtures composed of weakly nonspherical molecules. The results are rather satisfactory and generally much better than obtained using typical empirical methods. It is further demonstrated that a binary parameter in the dispersion energy results in only modest improvement 相似文献
78.
79.
Wolfgang Steglich Lothar Kopanski Maria Wolf Meinhard Moser Gabriele Tegtmeyer 《Tetrahedron letters》1984,25(22):2341-2344
From fruit bodies of the gilled agaric three new β-carboline derivatives infractin (1), 6-hydroxyinfractin (2) and infractopicrin (4) have been isolated. 4 is responsible for the bitter taste of the toadstool. 相似文献
80.
The 67Zn (93 keV) Mössbauer spectrum of ZnS has been investigated in the pressure range up to 33 kbar at 4.2 K. A linear increase with pressure of the s-electron density at the Zn nucleus is seen. 相似文献