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排序方式: 共有990条查询结果,搜索用时 15 毫秒
981.
982.
Transgenic mouse lines with ectopic expression of {alpha}-1, 3-galactosyltransferase: production and characteristics 总被引:2,自引:0,他引:2
Ikematsu Shinya; Kaname Tadashi; Ozawa Masayuki; Yonezawa Suguru; Sato Eiichi; Uehara Fumiyuki; Obama Hiroya; Yamamura Kenichi; Muramatsu Takashi 《Glycobiology》1993,3(6):575-580
The cDNA of murine 相似文献
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Total phospholipids were extracted from cells of temperature sensitive unsaturated fatty acid auxotrophs of Escherichia coli (K-12 UFAts) grown at 28degrees C (PL28), and at 42degrees C in the presence of 2% KCl as an osmotic stabilizer (PL42 (KCl)). From the analysis of fatty acids, it was shown that the content of unsaturated fatty acids of PL42 (KCl) is only 9% of the total fatty acids, while that of PL28 is 54%. The thermal phase transitions of the bilayers prepared from the phospholipid fractions were studied by proton magnetic resonance. The line widths of the methylene signals and the sums of the methylene and methyl signal intensities were plotted against reciprocal values of absolute temperature 1/T or temperature itself. From the plots phase transitions were detected at about 19degrees C for PL28 and at 43degrees C for PL42 (KCl). In spite of its complex composition of fatty acids a highly cooperative transition was observed in the case of PL42 (KCl). It was also suggested that the phospholipids bilayers in the biomembranes of this strain at the growth temperature (42 degrees C) are in the state where the gel and liquid crystalline phases coexist. 相似文献
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Shigeo Uehara Mariko Hiraiwa-Hasegawa Kazuhiko Hosaka Miya Hamai 《Primates; journal of primatology》1994,35(1):49-55
Usurpation of alpha status by males is a relatively rare event among wild chimpanzees in the Mahale Mountains National Park,
western Tanzania, where long-term field studies have been carried out since 1965. Here we report three such cases and compare
the fate of those defeated alpha males. The formation of effective alliances with other adult males is considered to be crucial
in determining what will happen to the defeated alpha male in the rank order after the loss of his status. 相似文献
989.
Abstract A new ab initio molecular dynamics method based on the full-potential linearized-augmented-plane-wave (LAPW) basis set has been implemented. The LAPW basis set has been successfully employed for systems containing localized electrons such as first row atoms and transition metals. In our implementation of the LAPW-MD scheme, iterative residual minimization algorithm is used to solve the electronic states problem. The atoms are moved according to forces derived from the Hellman–Feynman theorem and incomplete basis set correction terms. The performance of the program is further enhanced by parallelization. We will discuss technical details of the program implementation and present results obtained from this code to the equilibrium structures and vibrational properties of simple diatomic molecules. 相似文献
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