全文获取类型
收费全文 | 178篇 |
免费 | 3篇 |
专业分类
化学 | 102篇 |
晶体学 | 7篇 |
力学 | 2篇 |
数学 | 13篇 |
物理学 | 57篇 |
出版年
2024年 | 1篇 |
2023年 | 4篇 |
2022年 | 3篇 |
2021年 | 7篇 |
2020年 | 6篇 |
2019年 | 5篇 |
2018年 | 2篇 |
2017年 | 4篇 |
2016年 | 5篇 |
2015年 | 1篇 |
2014年 | 8篇 |
2013年 | 9篇 |
2012年 | 4篇 |
2011年 | 13篇 |
2010年 | 8篇 |
2009年 | 5篇 |
2008年 | 9篇 |
2007年 | 8篇 |
2006年 | 7篇 |
2005年 | 3篇 |
2002年 | 2篇 |
2001年 | 4篇 |
2000年 | 1篇 |
1999年 | 4篇 |
1998年 | 1篇 |
1996年 | 1篇 |
1995年 | 4篇 |
1994年 | 5篇 |
1993年 | 4篇 |
1992年 | 1篇 |
1991年 | 8篇 |
1990年 | 10篇 |
1989年 | 2篇 |
1988年 | 3篇 |
1987年 | 1篇 |
1985年 | 3篇 |
1984年 | 7篇 |
1983年 | 3篇 |
1979年 | 1篇 |
1978年 | 1篇 |
1975年 | 1篇 |
1970年 | 1篇 |
1958年 | 1篇 |
排序方式: 共有181条查询结果,搜索用时 15 毫秒
151.
Preparing to read the ubiquitin code: characterization of ubiquitin trimers by top‐down mass spectrometry
下载免费PDF全文
![点击此处可从《Journal of mass spectrometry : JMS》网站下载免费的PDF全文](/ch/ext_images/free.gif)
Amanda E. Lee Lucia Geis‐Asteggiante Emma K. Dixon Yeji Kim Tanuja R. Kashyap Yan Wang David Fushman Catherine Fenselau 《Journal of mass spectrometry : JMS》2016,51(4):315-321
The profound effects of ubiquitination on the movement and processing of cellular proteins depend exquisitely on the structures of monoubiquitin and polyubiquitin modifications. Unconjugated polyubiquitins also have a variety of intracellular functions. Structures and functions are not well correlated yet, because the structures of polyubiquitins and polyubiquitin modifications of proteins are difficult to decipher. We are moving towards a robust strategy to provide that structural information. In this report electron transfer dissociation mass spectra of six synthetic ubiquitin trimers (multiply branched proteins with molecular masses exceeding 25 600 Da) are examined using an Orbitrap Fusion Lumos instrument to determine how top‐down mass spectrometry can characterize the chain topology and linkage sites in a single, facile workflow. The efficacy of this method relies on the formation, detection, and interpretation of extensive fragmentation. Copyright © 2016 John Wiley & Sons, Ltd. 相似文献
152.
Design,development and first experiments on the X‐ray imaging beamline at Indus‐2 synchrotron source RRCAT,India
下载免费PDF全文
![点击此处可从《Journal of synchrotron radiation》网站下载免费的PDF全文](/ch/ext_images/free.gif)
A. K. Agrawal B. Singh Y. S. Kashyap M. Shukla P. S. Sarkar Amar Sinha 《Journal of synchrotron radiation》2015,22(6):1531-1539
A full‐field hard X‐ray imaging beamline (BL‐4) was designed, developed, installed and commissioned recently at the Indus‐2 synchrotron radiation source at RRCAT, Indore, India. The bending‐magnet beamline is operated in monochromatic and white beam mode. A variety of imaging techniques are implemented such as high‐resolution radiography, propagation‐ and analyzer‐based phase contrast imaging, real‐time imaging, absorption and phase contrast tomography etc. First experiments on propagation‐based phase contrast imaging and micro‐tomography are reported. 相似文献
153.
Srinivasa Rao Vidadala Shivaji A. Thadke Srinivas Hotha Sudhir Kashyap 《Journal of carbohydrate chemistry》2013,32(3):241-251
Various thioglycosides were synthesized from stable propargyl glycosides using catalytic quantity of AuBr3 and various thiol aglycons. The current protocol enables preparation of thioglycosides from propargyl glycosides in an efficient and simple manner. The reaction is fast, catalytic, and mild. Supplemental materials are available for this article. Go to the publisher's online edition of Journal of Carbohydrate Chemistry to view the free supplemental file. 相似文献
154.
155.
156.
157.
158.
Recent extension of mean spherical approximation (MSA) for electrolyte solution has been employed to investigate the non-ideality
in Born-free energy of solvation of a rigid, mono-positive ion in binary dipolar mixtures of associating (ethanol-water) and
non-associating (dimethylsulfoxide-acetonitrile) solvents. In addition to the dipole moments, the solvent size ratio and ion
size have been treated in a consistent manner in this extended MSA theory for the first time. The solvent-solvent size ratio
is found to play an important role in determining the non-ideality in these binary mixtures. Smaller ions such as Li+ and Na+ show stronger non-ideality in such mixtures compared to bigger ions (for example, Cs+ and Bu4N+). The partial solvent polarization densities around smaller ions in tertiary butanol (TBA)-water mixture is found to be very
different from that in other alcohol-water mixtures as well as to that for larger ions in aqueous solutions of TBA. Non-ideality
is weaker in mixtures consisting of solvent species possessing nearly equal diameters and dipole moments and is reflected
in the mole fraction dependent partial solvent polarization densities. 相似文献
159.
160.