全文获取类型
收费全文 | 95篇 |
免费 | 10篇 |
专业分类
化学 | 56篇 |
晶体学 | 1篇 |
力学 | 3篇 |
数学 | 1篇 |
物理学 | 44篇 |
出版年
2023年 | 2篇 |
2022年 | 1篇 |
2021年 | 1篇 |
2020年 | 3篇 |
2019年 | 2篇 |
2018年 | 3篇 |
2017年 | 2篇 |
2016年 | 6篇 |
2014年 | 4篇 |
2013年 | 8篇 |
2012年 | 5篇 |
2011年 | 2篇 |
2010年 | 1篇 |
2009年 | 1篇 |
2008年 | 1篇 |
2007年 | 2篇 |
2005年 | 2篇 |
2004年 | 2篇 |
2003年 | 3篇 |
2002年 | 1篇 |
2001年 | 1篇 |
2000年 | 4篇 |
1999年 | 1篇 |
1998年 | 1篇 |
1997年 | 1篇 |
1996年 | 1篇 |
1995年 | 1篇 |
1994年 | 6篇 |
1993年 | 7篇 |
1992年 | 4篇 |
1991年 | 2篇 |
1990年 | 3篇 |
1989年 | 2篇 |
1985年 | 4篇 |
1984年 | 1篇 |
1983年 | 2篇 |
1982年 | 5篇 |
1981年 | 2篇 |
1980年 | 1篇 |
1979年 | 1篇 |
1974年 | 1篇 |
1959年 | 1篇 |
1937年 | 1篇 |
排序方式: 共有105条查询结果,搜索用时 484 毫秒
11.
Analysis of nonleptonic ΔS = 1 weak decays strongly restricts the possible size of right-handed weak couplings. Limits thus obtained are competitive with those obtained via other means. 相似文献
12.
Dr. Julian J. Holstein Priv.‐Doz. Dr. Birger Dittrich Miriam Simon Dr. Sylvain Prévost Prof. Dr. Michael Gradzielski Prof. Dr. Guido H. Clever 《Angewandte Chemie (International ed. in English)》2018,57(41):13652-13656
A series of metal‐mediated cages, having multiple cavities, was synthesized from PdII cations and tris‐ or tetrakis‐monodentate bridging ligands and characterized by NMR spectroscopy, mass spectrometry, and X‐ray methods. The peanut‐shaped [Pd3L14] cage deriving from the tris‐monodentate ligand L1 could be quantitatively converted into its interpenetrated [5Cl@Pd6L18] dimer featuring a linear {[Pd‐Cl‐]5Pd} stack as an unprecedented structural motif upon addition of chloride anions. Small‐angle neutron scattering (SANS) experiments showed that the cigar‐shaped assembly with a length of 3.7 nm aggregates into mono‐layered discs of 14 nm diameter via solvophobic interactions between the hexyl sidechains. The hepta‐cationic [5Cl@Pd6L18] cage was found to interact with polyanionic oligonucleotide double‐strands under dissolution of the aggregates in water, rendering the compound class interesting for applications based on non‐covalent DNA binding. 相似文献
13.
14.
Modifying the 5′‐Cap for Click Reactions of Eukaryotic mRNA and To Tune Translation Efficiency in Living Cells
下载免费PDF全文
![点击此处可从《Angewandte Chemie (International ed. in English)》网站下载免费的PDF全文](/ch/ext_images/free.gif)
Josephin M. Holstein Lea Anhäuser Prof. Dr. Andrea Rentmeister 《Angewandte Chemie (International ed. in English)》2016,55(36):10899-10903
The 5′‐cap is a hallmark of eukaryotic mRNAs and plays fundamental roles in RNA metabolism, ranging from quality control to export and translation. Modifying the 5′‐cap may thus enable modulation of the underlying processes and investigation or tuning of several biological functions. A straightforward approach is presented for the efficient production of a range of N7‐modified caps based on the highly promiscuous methyltransferase Ecm1. We show that these, as well as N2‐modified 5′‐caps, can be used to tune translation of the respective mRNAs both in vitro and in cells. Appropriate modifications allow subsequent bioorthogonal chemistry, as demonstrated by intracellular live‐cell labeling of a target mRNA. The efficient and versatile N7 manipulation of the mRNA cap makes mRNAs amenable to both modulation of their biological function and intracellular labeling, and represents a valuable addition to the chemical biology toolbox. 相似文献
15.
P. Holstein E. B. Barmatov D. Geschke M. Bender V. P. Shibaev 《Colloid and polymer science》2000,278(8):711-718
The aim of this work is to study in detail the orientational structure of liquid-crystalline polymers with different molecular
weight. The advantage of our approach is the use of broad-band 1H and 2H NMR spectroscopy for the analysis of the orientational order of the main-chain and mesogenic groups in conjunction with
small-angle neutron scattering results. Investigations of a series of partially deuterated side-chain polymers with methoxybenzylbenzoate
mesogenic groups have been carried out. The deuteration of the main chain enables separate access to order and orientation
effects of the side chain and the main chain. The molecular orientation of the substances investigated can be frozen in its
nematic phase below the glass-transition temperature. It is independent of the molecular weight, whereas the dynamics of the
director reorientation (rotational viscosity) in the nematic phase strongly depends on the molecular weight. The main-chain
deuterons provide powder spectra after orientation of the polymer in magnetic fields, indicating a very weak or lacking orientational
anisotropy. A complete decoupling of the main and the side group can be deduced.
Received: 15 September 1999 Accepted: 7 February 2000 相似文献
16.
B. R. Holstein 《The European Physical Journal A - Hadrons and Nuclei》2007,32(4):505-511
The subject of hadronic parity violation is nearly fifty years old, but a good deal of uncertainty remains, despite many efforts
both theoretical and experimental. A brief summary of the field is presented and a plan is proposed for new experimental work
which, when combined with a new theoretical tack based on effective field theory, should lead to resolution of the present
difficulties. 相似文献
17.
18.
19.
20.