全文获取类型
收费全文 | 130篇 |
免费 | 2篇 |
专业分类
化学 | 55篇 |
数学 | 12篇 |
物理学 | 34篇 |
无线电 | 31篇 |
出版年
2019年 | 1篇 |
2017年 | 3篇 |
2015年 | 1篇 |
2014年 | 1篇 |
2012年 | 2篇 |
2011年 | 6篇 |
2010年 | 4篇 |
2009年 | 2篇 |
2008年 | 8篇 |
2007年 | 4篇 |
2006年 | 4篇 |
2004年 | 4篇 |
2003年 | 3篇 |
2002年 | 4篇 |
2001年 | 5篇 |
2000年 | 6篇 |
1999年 | 4篇 |
1998年 | 5篇 |
1997年 | 1篇 |
1996年 | 4篇 |
1995年 | 11篇 |
1994年 | 6篇 |
1993年 | 4篇 |
1992年 | 3篇 |
1991年 | 3篇 |
1990年 | 6篇 |
1989年 | 6篇 |
1988年 | 3篇 |
1987年 | 1篇 |
1986年 | 4篇 |
1985年 | 1篇 |
1984年 | 1篇 |
1983年 | 3篇 |
1982年 | 1篇 |
1981年 | 1篇 |
1980年 | 2篇 |
1979年 | 2篇 |
1978年 | 1篇 |
1969年 | 1篇 |
排序方式: 共有132条查询结果,搜索用时 17 毫秒
101.
Beavis D Bennett MJ Carroll JB Chiba J Chikanian A Crawford H Cronqvist M Dardenne Y Debbe R Doke T Engelage J Greiner L Hallman TJ Hayano RS Heckman HH Kashiwagi T Kikuchi J Kumar S Kuo C Lindstrom PJ Mitchell JW Nagamiya S Nagle JL Pope JK Stankus P Tanaka KH Welsh RC Zhan W 《Physical review letters》1995,75(20):3633-3636
102.
103.
Alexandreas DE Allen RC Berley D Biller SD Burman RL Cady DR Chang CY Dingus BL Dion GM Ellsworth RW Gilra MK Goodman JA Gupta S Haines TJ Hoffman CM Krakauer DA Kwok P Lloyd-Evans J Lu XQ Nagle DE Potter ME Sandberg VD Stark MJ Talaga RL Vishwanath PR Yodh GB Zhang W 《Physical review D: Particles and fields》1991,43(5):1735-1738
104.
Li XC Ferreira D Jacob MR Zhang Q Khan SI ElSohly HN Nagle DG Smillie TJ Khan IA Walker LA Clark AM 《Journal of the American Chemical Society》2004,126(22):6872-6873
Coruscanones A and B, two new antifungal cyclopentenedione derivatives, have been isolated from Piper coruscans and their structures elucidated by spectroscopic and chemical methods. Coruscanone A exhibits significant antifungal activity against Candida albicans and its azole-resistant strains and may serve as a template for a new class of antifungal agents. 相似文献
105.
Tong J.Y.F. Nagle D. Rutenbar R.A. 《Very Large Scale Integration (VLSI) Systems, IEEE Transactions on》2000,8(3):273-286
Low-power systems often find the power cost of floating-point (FP) hardware prohibitively expensive. This paper explores ways of reducing FP power consumption by minimizing the bitwidth representation of FP data. Analysis of several FP programs that manipulate low-resolution human sensory data shows that these programs suffer no loss of accuracy even with a significant reduction in bitwidth. Most FP programs in our benchmark suite maintain the same output even when the mantissa bitwidth is reduced by half. This FP bitwidth reduction can deliver a significant power saving through the use of a variable bitwidth FP unit. Our results show that up to 66% reduction in multiplier energy/operation can be achieved in the FP unit by this bitwidth reduction technique without sacrificing any program accuracy 相似文献
106.
107.
Andrea J. Ahern Lorraine C. Nagle Declan L. Burke 《Journal of Solid State Electrochemistry》2002,6(7):451-462
Four low-level redox responses, attributed to the involvement of four different types of active surface state (or site) transitions,
were observed within the double layer region in the case of polycrystalline silver electrodes in base; there is now independent
evidence for such premonolayer behaviour in data reported by other authors. The potentials for each of these transitions were
correlated with the onset/termination potentials of different electrocatalytic processes, usually for oxidations or reductions
but in some cases for both types. The data obtained are in good agreement with the IHOAM model of electrocatalysis which was
outlined earlier for the other Group 11 metals, gold and copper.
Electronic Publication 相似文献
108.
On the Ramsey Number of Sparse 3-Graphs 总被引:1,自引:0,他引:1
Brendan Nagle Sayaka Olsen Vojtěch Rödl Mathias Schacht 《Graphs and Combinatorics》2008,24(3):205-228
We consider a hypergraph generalization of a conjecture of Burr and Erd?s concerning the Ramsey number of graphs with bounded degree. It was shown by Chvátal, Rödl, Trotter, and Szemerédi [The Ramsey number of a graph with bounded maximum degree, J. Combin. Theory Ser. B 34 (1983), no. 3, 239–243] that the Ramsey number R(G) of a graph G of bounded maximum degree is linear in |V(G)|. We derive the analogous result for 3-uniform hypergraphs. 相似文献
109.
Fister TT Seidler GT Shirley EL Vila FD Rehr JJ Nagle KP Linehan JC Cross JO 《The Journal of chemical physics》2008,129(4):044702
New theoretical and experimental investigations of the occupied and unoccupied local electronic densities of states (DOS) are reported for alpha-Li(3)N. Band-structure and density-functional theory calculations confirm the absence of covalent bonding character. However, real-space full-multiple-scattering (RSFMS) calculations of the occupied local DOS find less extreme nominal valences than have previously been proposed. Nonresonant inelastic x-ray scattering, RSFMS calculations, and calculations based on the Bethe-Salpeter equation are used to characterize the unoccupied electronic final states local to both the Li and N sites. There is a good agreement between experiment and theory. Throughout the Li 1s near-edge region, both experiment and theory find strong similarities in the s-and p-type components of the unoccupied local final DOS projected onto an orbital angular momentum basis (l-DOS). An unexpected, significant correspondence exists between the near-edge spectra for the Li 1s and N 1s initial states. We argue that both spectra are sampling essentially the same final DOS due to the combination of long core-hole lifetimes, long photoelectron lifetimes, and the fact that orbital angular momentum is the same for all relevant initial states. Such considerations may be generally applicable for low atomic number compounds. 相似文献
110.
J.L. Nagle 《The European Physical Journal C - Particles and Fields》2007,49(1):275-279
Data from the Relativistic Heavy Ion Collider over the last five years have led many to conclude that the medium created is
not the expected quark–gluon plasma (QGP), but rather a strongly coupled or strongly interacting quark–gluon plasma (sQGP).
We explore the meaning of this possible paradigm shift and the experimental and theoretical arguments that are associated
with it. In this proceedings we detail only a small subset of the relevant issues as discussed at the Hot Quarks 2006 Workshop.
PACS 25.75.-q; 25.75.Nq 相似文献