全文获取类型
收费全文 | 333篇 |
免费 | 60篇 |
国内免费 | 125篇 |
专业分类
力学 | 11篇 |
综合类 | 1篇 |
数学 | 34篇 |
物理学 | 472篇 |
出版年
2023年 | 8篇 |
2022年 | 8篇 |
2021年 | 12篇 |
2020年 | 3篇 |
2019年 | 6篇 |
2018年 | 6篇 |
2017年 | 5篇 |
2016年 | 9篇 |
2015年 | 3篇 |
2014年 | 9篇 |
2013年 | 8篇 |
2012年 | 12篇 |
2011年 | 21篇 |
2010年 | 71篇 |
2009年 | 59篇 |
2008年 | 28篇 |
2007年 | 30篇 |
2006年 | 25篇 |
2005年 | 13篇 |
2004年 | 16篇 |
2003年 | 21篇 |
2002年 | 27篇 |
2001年 | 18篇 |
2000年 | 17篇 |
1999年 | 15篇 |
1998年 | 10篇 |
1997年 | 5篇 |
1996年 | 3篇 |
1995年 | 8篇 |
1994年 | 3篇 |
1993年 | 3篇 |
1992年 | 1篇 |
1991年 | 7篇 |
1990年 | 1篇 |
1989年 | 1篇 |
1988年 | 1篇 |
1987年 | 2篇 |
1986年 | 1篇 |
1985年 | 2篇 |
1984年 | 2篇 |
1983年 | 2篇 |
1982年 | 2篇 |
1981年 | 4篇 |
1980年 | 3篇 |
1979年 | 6篇 |
1977年 | 1篇 |
排序方式: 共有518条查询结果,搜索用时 15 毫秒
91.
92.
We study the κ meson in 2+1 flavor QCD with sufficiently light u/d quarks. Using numerical simulations, we measure the point-to-point κ correlators in the "Asqtad" improved staggered fermion formulation. We then analyze these correlators using rooted staggered chiral perturbation theory (rSχPT), with particular attention paid to bubble contribution. After chiral extrapolation, we obtain the physical κ mass with 828±97 MeV, which is within the recent experimental value of 800-900 MeV. These numerical simulations are carried out with MILC 2+1 flavor gauge configurations at a lattice spacing of a ≈ 0.12 fm. 相似文献
93.
Some charmonium-like resonances such as X(3872) can be interpreted as possible D(*)D(*) molecular states. Within the quark model, we study the structure of such molecular states and the similar B(*)D(*) molecular states by taking into account the light meson exchange (π, η, ρ, ω and σ) between two light quarks from different mesons. 相似文献
94.
Based on the quark-gluon contents of nucleon and strongly believing that the force mediators, Pomeron and its counterpart in the conventional approach of Regge theory, for high energy diffractive process would be the tensor glueball and Odderonrespectively, we discuss photo-production of vector meson ø off the deuteron at energy less than 3 GeV in the QCD inspired model in which the quark gluon degrees of freedom and glueball, Odderon exchange are taken into account. A calculation isperformed for γ+D → ø+D, and the theoretical predictions of the differential cross section dσ γD/dt, are presented and compared with available experimental data. Our QCD inspired model reproduces data quite well in the whole range of the experimental measurements up to |t|≌ 0.4~GeV. Our results can be used toextract γn →øn data, which cannot be measured in experiment. 相似文献
95.
In this paper, firstly, we investigate the neutrino
emissivity from quark Urca process in strong magnetic field. Then, we
discuss the heat capacity of strange stars in strong magnetic field.
Finally, we give the cooling curve in strong magnetic field. In order to
make a comparison, we also give the corresponding cooling curve in the case
of null magnetic field. It turns out that strange stars cool faster
in strong magnetic field than that without magnetic field. 相似文献
96.
In the relativistic σ-ω model,
the influences of the parameters b, c, d
in the potential U(σ)=(1/2!)bσ2+(1/3!)cσ3+
(1/4!)dσ4 to the incompressibility, effective mass and binding energy of the nuclear matter are studied in detail. The calculation of equation of state of nuclear matter shows that the values of b, c, d depend
on the renormalization condition, we also find that a soft equation of state of nuclear matter can be obtained
in a suitable renormalization condition, and the experimental incompressibility coefficient can be reproduced. These results are also used to study the thermal properties of hot Δ-resonant nuclear matter. 相似文献
97.
The finite volume effect of baryons in strange hadronic matter (SHM) is studied within the framework of relativistic mean-field theory. As this effect is concerned, the saturation density of SHM turns lower, and the binding energy per baryon decreases.
Its influence to the compression modulus of SHM is also discussed. 相似文献
98.
99.
且引言在生物流体力学中,由于血流具有轴对称性,常常采用圆柱坐标系来研究血管内的血液流动.本文采用〔门中描述血液流动的N-S方程及其相应的定解条件:N-S方程:其中V为血液的轴向速度,V为血液的径向速度,坐标圆点取在血管入口处的截面中心x轴沿管的轴向,广轴沿管的径向,户与厂无关.*一nU厂。U几U凤.边界条件:初始条件:ul。-。一u。(r,x),叫t_。一v。(r,x),tEI一[0,TI(l.6)此定解问题中,N-S方程在r—0处具有奇异性质,这给数值分析带来了一定的困难.有关二维稳态和非稳态奇异问题有限元方法的研究,… 相似文献
100.