共查询到20条相似文献,搜索用时 31 毫秒
1.
2.
3.
4.
Ktirschner,H.& W.Frey.2011.Liverworts,Mosses and Hornworts of Southwest Asia (Marchantiophyta,Bryophyta,Anthocerotophyta).Nova Hedwigia,Beiheft 139.J.Cramer,Stuttgart.2011.240 pages,9 figures,1 table,24×17 cm,610 g.Language:English,ISBN 978-3-443-51061-9,paperback,price:108.00.Available at www.borntraeger-cramer.de. 相似文献
5.
6.
7.
8.
9.
《Parasitology today (Personal ed.)》1993,9(7):240
10.
11.
12.
13.
14.
15.
Nuclear magnetic resonance (NMR) spectroscopy is the only experimental technique that can determine the structures and dynamics of biological macromolecules and their complexes in solution and with atomic resolution. The award of the 2002 Nobel Prize in Chemistry to Kurt Wüthrich of the Swiss Federal Institute of Technology and The Scripps Research Institute honors his pioneering efforts in developing and applying this technique. Wüthrich shared the prize with John B. Fenn and Koichi Tanaka, who were recognized for the development of ionization methods for the analysis of proteins using mass spectrometry. 相似文献
16.
17.
18.
19.
20.
《Inorganica chimica acta》1986,119(1):99-105
The REX relativistically parameterized extended Hückel method is used to study the electronic structure of lanthanide trihalide molecules. All valence orbitals are described in terms of double-zeta Slater functions, with the atomic orbital parameters being determined by a least-squares fitting to published relativistic (Dirac- Fock) radial densities. Comparisons of orbital energies to experimental values are made and various trends are discussed. Ab initio all-electron calculations at the self-consistent field level and as a function of molecular geometry are reported for LaH3, LaF3, and LaCl3. While LaH3 and LaF3 are calculated to be pyramidal, LaCl3 is calculated to be planar. 相似文献