全文获取类型
收费全文 | 588篇 |
免费 | 17篇 |
国内免费 | 3篇 |
专业分类
化学 | 263篇 |
晶体学 | 2篇 |
力学 | 11篇 |
数学 | 203篇 |
物理学 | 129篇 |
出版年
2022年 | 7篇 |
2021年 | 7篇 |
2020年 | 6篇 |
2019年 | 6篇 |
2018年 | 9篇 |
2017年 | 11篇 |
2016年 | 25篇 |
2015年 | 15篇 |
2014年 | 21篇 |
2013年 | 36篇 |
2012年 | 35篇 |
2011年 | 28篇 |
2010年 | 25篇 |
2009年 | 22篇 |
2008年 | 39篇 |
2007年 | 29篇 |
2006年 | 33篇 |
2005年 | 16篇 |
2004年 | 21篇 |
2003年 | 25篇 |
2002年 | 18篇 |
2001年 | 15篇 |
2000年 | 11篇 |
1999年 | 11篇 |
1998年 | 13篇 |
1997年 | 4篇 |
1996年 | 8篇 |
1995年 | 2篇 |
1994年 | 2篇 |
1993年 | 4篇 |
1992年 | 5篇 |
1991年 | 4篇 |
1990年 | 9篇 |
1989年 | 8篇 |
1988年 | 5篇 |
1987年 | 2篇 |
1986年 | 3篇 |
1985年 | 5篇 |
1984年 | 3篇 |
1983年 | 8篇 |
1981年 | 6篇 |
1980年 | 5篇 |
1979年 | 4篇 |
1978年 | 11篇 |
1977年 | 5篇 |
1976年 | 4篇 |
1975年 | 3篇 |
1973年 | 3篇 |
1970年 | 3篇 |
1969年 | 2篇 |
排序方式: 共有608条查询结果,搜索用时 15 毫秒
1.
2.
Active anodes, especially those consisting of metal mixed oxides (MMOs) containing Ru and/or Ir oxides, have been applied in the treatment of wastewater, especially when chloride ions are present. Their characteristics continuously drive the study of applications of these materials, be they in the degradation of different organic molecules, the preparation of new electrode materials and in the association of various processes to increase pollutant removal. Thus, this brief review aims to present some of the recent advances in the application of active anode materials in environmental electrochemistry. Focussing on the 2018–2020 period, it is possible to note many applied studies, using commercially available materials, covering a wide range of target pollutants. Still other studies aim to modify the catalyst surfaces to increase the mineralization capacity, and the use of these anodes in the production of free chlorine species to mediate indirect organic reduction is observed. 相似文献
3.
4.
5.
6.
7.
The problem of computing light scattering by cylindrical fibers with high aspect ratio in the framework of the Null‐Field method with discrete sources is treated. Numerical experiments for investigating the scattering properties of two fiber geometries are performed using distributed spherical vector wave functions as discrete sources. 相似文献
8.
Sorin Bastea Raffaele Esposito Joel L. Lebowitz Rossana Marra 《Journal of statistical physics》2006,124(2-4):445-483
We derive hydrodynamic equations describing the evolution of a binary fluid segregated into two regions, each rich in one species,which are separated (on the macroscopic scale) by a sharp interface. Our starting point is a Vlasov-Boltzmann (VB) equation describing the evolution of the one particle position and velocity distributions, fi (x, v, t), i = 1, 2. The solution of the VB equation is developed in a Hilbert expansion appropriate for this system. This yields incompressible Navier-Stokes equations for the velocity field u and a jump boundary condition for the pressure across the interface. The interface, in turn, moves with a velocity given by the normal component of u. 相似文献
9.
10.
Flameless atomic absorption spectrometry (flameless a.a.s.) was applied to study the state of mercury deposited on a gold plate electrode from very dilute mercury(II) solution by controlled-potential electrolysis. A stable monolayer is formed on the gold electrode by the electrolysis at a potential about 200 mV more positive than the reversible Nernst potential for the reduction of mercury(II) to mercury(0). After the monolayer formation, bulk mercury is deposited on the monolayer at the reversible potential and an adatom layer is also found. The difference of activation free energies between the evaporation of mercury from the monolayer and that from bulk mercury corresponds to the underpotential shift for the electrodeposition of mercury on the gold electrode. 相似文献