全文获取类型
收费全文 | 65篇 |
免费 | 0篇 |
专业分类
化学 | 4篇 |
力学 | 1篇 |
数学 | 6篇 |
物理学 | 54篇 |
出版年
2015年 | 1篇 |
2013年 | 1篇 |
2012年 | 1篇 |
2011年 | 1篇 |
2009年 | 1篇 |
2008年 | 2篇 |
2006年 | 1篇 |
2005年 | 1篇 |
2004年 | 3篇 |
2002年 | 3篇 |
2001年 | 2篇 |
2000年 | 8篇 |
1999年 | 8篇 |
1998年 | 3篇 |
1996年 | 2篇 |
1995年 | 4篇 |
1994年 | 1篇 |
1993年 | 7篇 |
1991年 | 2篇 |
1990年 | 1篇 |
1989年 | 1篇 |
1987年 | 2篇 |
1986年 | 1篇 |
1985年 | 2篇 |
1982年 | 1篇 |
1981年 | 1篇 |
1974年 | 2篇 |
1972年 | 1篇 |
1969年 | 1篇 |
排序方式: 共有65条查询结果,搜索用时 15 毫秒
11.
AM Jayannavar 《Pramana》2002,58(2):173-181
We present a simple model of transmission across a metallic mesoscopic ring. In one of its arm an electron interacts with
a single magnetic impurity via an exchange coupling. We show that entanglement between electron and spin impurity states leads
to reduction of Aharonov-Bohm oscillations in the transmission coefficient. The spin-conductance is asymmetric in the flux
reversal as opposed to the two-probe electrical conductance which is symmetric. In the same model, in contradiction to the
naive expectation of a current magnification effect, we observe enhancement as well as suppression of this effect depending
on the system parameters. The limitations of this model to the general notion of dephasing or decoherence in quantum systems
are pointed out. 相似文献
12.
13.
The leading asymptotic term for the function that counts theeigenvalues of the Stokes operator is determined for fairlygeneral underlying bounded domains. Moreover, the remainderis estimated in terms of the fractality of the boundary of thedomain. The results obtained resemble corresponding ones forthe Dirichlet Laplacian. 1991 Mathematics Subject Classification:35P20. 相似文献
14.
KM Varier AM Vinodkumar NVSV Prasad PV Madhusudhana Rao DL Sastry Lagy T Baby MC Radhakrishna NG Puttaswamy JJ Das P Sugathan N Madhavan AK Sinha DO Kataria 《Pramana》1999,53(3):529-533
Large enhancements have been observed in the sub-barrier fusion cross sections for Ti+Ni systems in our previous studies.
Coupled channel calculations incorporating couplings to 2+ and 3− states failed to explain these enhancements completely. A possibilty of transfer channels contributing to the residual enhancements
had been suggested. In order to investigate the role of relevant transfer channels, measurements of one- and two-nucleon transfer
were carried out for 46,48Ti+61Ni systems. The present paper gives the results of these studies. 相似文献
15.
16.
17.
18.
19.
S. A. Belkov G. G. Kochemasov T. E. Lyubynskaya N. V. Maslov A. S. Nuzhny L. B. Da Silva A. Rubenchik 《Applied physics. B, Lasers and optics》2011,105(3):641-648
Minimally invasive probe and optical biopsy system based on optical spectra recording and analysis seem to be a promising
tool for early diagnostics of breast cancer. Light scattering and absorption spectra are generated continuously as far as
the needle-like probe with one emitting and several collecting optical fibers penetrates through the tissues toward to the
suspicious area. That allows analyzing not only the state of local site, but also the structure of tissues along the needle
trace. The suggested method has the advantages of automated on-line diagnosing and minimal tissue destruction and in parallel
with the conventional diagnostic procedures provides the ground for decision-making. 相似文献
20.
P.S. Banks M.D. Feit A.M. Rubenchik B.C. Stuart M.D. Perry 《Applied Physics A: Materials Science & Processing》1999,69(7):S377-S380
Although hole drilling using ultra-short laser pulses has been shown to produce holes of excellent quality, we have observed that during the evolution of the hole, the morphology of the hole bottom has a dependence on fluence, number of shots, and polarization. We describe the nature of this structure within the hole and under what conditions it is observed. 相似文献