全文获取类型
收费全文 | 116篇 |
免费 | 2篇 |
专业分类
化学 | 43篇 |
晶体学 | 2篇 |
力学 | 1篇 |
数学 | 10篇 |
物理学 | 62篇 |
出版年
2024年 | 1篇 |
2023年 | 2篇 |
2022年 | 1篇 |
2021年 | 2篇 |
2019年 | 2篇 |
2017年 | 1篇 |
2016年 | 1篇 |
2015年 | 1篇 |
2014年 | 1篇 |
2013年 | 1篇 |
2012年 | 3篇 |
2011年 | 4篇 |
2010年 | 1篇 |
2009年 | 4篇 |
2008年 | 3篇 |
2007年 | 2篇 |
2006年 | 2篇 |
2005年 | 8篇 |
2004年 | 4篇 |
2003年 | 1篇 |
2002年 | 4篇 |
2001年 | 1篇 |
2000年 | 4篇 |
1999年 | 9篇 |
1998年 | 3篇 |
1996年 | 1篇 |
1995年 | 1篇 |
1994年 | 5篇 |
1993年 | 5篇 |
1992年 | 9篇 |
1991年 | 3篇 |
1990年 | 3篇 |
1989年 | 3篇 |
1988年 | 1篇 |
1987年 | 5篇 |
1986年 | 3篇 |
1985年 | 6篇 |
1981年 | 1篇 |
1977年 | 1篇 |
1976年 | 1篇 |
1975年 | 1篇 |
1972年 | 1篇 |
1969年 | 1篇 |
1967年 | 1篇 |
排序方式: 共有118条查询结果,搜索用时 375 毫秒
1.
Serge Palacin Christophe Bureau Julienne Charlier Guy Deniau Brigitte Mouanda Pascal Viel 《Chemphyschem》2004,5(10):1468-1481
Electrografting is a powerful and versatile technique for modifying and decorating conducting surfaces with organic matter. Mainly based on the electro-induced polymerization of dissolved electro-active monomers on metallic or semiconducting surfaces, it finds applications in various fields including biocompatibility, protection against corrosion, lubrication, soldering, functionalization, adhesion, and template chemistry. Starting from experimental observations, this Review highlights the mechanism of the formation of covalent metal-carbon bonds by electro-induced processes, together with major applications such as derivatization of conducting surfaces with biomolecules that can be used in biosensing, lubrication of low-level electrical contacts, reversible trapping of ionic waste on reactive electrografted surfaces as an alternative to ion-exchange resins, and localized modification of conducting surfaces, a one-step process providing submicrometer grafted areas and which is used in microelectronics. 相似文献
2.
3.
Conditions for writing wave equations in linear viscoelastic materials are investigated. The study is restricted to the infinitesimal theory and an application is suggested in modeling ultrasound propagation in soft biological tissues. First, a general wave equation is obtained for the displacement field in an inhomogeneous medium. Second, the propagation of "the mean principal stress" (i.e., minus the arithmetical mean of the principal stresses) is examined. That quantity is particularly relevant when the force per unit area is detected at the surface of a nondissipative coupling medium. If the material is homogeneous, a wave equation is always obtained for the mean principal stress. Otherwise, supplementary conditions have to be assumed on the material and possibly on the motion. Results are illustrated by examples which present linearly elastic perfect fluids and linearly elastic Newtonian viscous fluids as particular viscoelastic materials. 相似文献
4.
5.
6.
LoSecco JM Bionta RM Biewitt G Bratton CB Casper D Chrysicopoulou P Claus R Cortez BG Errede S Foster GW Gajewski W Ganezer KS Goldhaber M Haines TJ Jones TW Kielczewska D Kropp WR Learned JG Lehmann E Park HS Reines F Schultz J Seidel S Shumard E Sinclair D Sobel HW Stone JL Sulak L Svoboda R van der Velde JC Wuest C 《Physical review letters》1985,54(21):2299-2301
7.
8.
9.
In order to model the adsorption of xylan on cellulose, we have simulated, at the atomic level, the gas phase adsorption of
small xylan fragments having 5 skeletal β (1 → 4) xylosyl residues (X5), using molecular dynamics simulations. A first regime was considered, corresponding to a low surface coverage, with the
adsorption of isolated X5 in various initial orientations. In this regime, the simulation indicated that X5 moved toward extended conformations, some of them being helical, with the possibility of either 21 or left-handed 31 helices. During the simulation, the X5 fragments became preferentially oriented, parallel or anti parallel with respect to the cellulose chain axis. Substitution
of the X5 backbone by either GlcA and/or Araf side chains had no major influence on either the conformation or the efficiency of the
interaction. However, the presence of side chains favored orientations of the X5 backbone inclined with respect to the cellulose chain axis. In a second regime corresponding to monolayer coverage, the geometrical
features of the adsorption of the xylan fragments on cellulose was roughly the same as that in the individual coverage situation.
In this case, the monolayer became equilibrated at 0.14 g of xylan fragments for each g of cellulose, a figure that compared
favourably with the values obtained in experimental adsorption of xylan on bacterial cellulose. 相似文献
10.