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951.
Yoro Kenji 《Nuclear Physics A》1980,333(1):67-76
The spin-tensor decomposition of effective interactions is carried out in the 0p shell region. As effective interactions, we adopt two different types: one is the Cohen-Kurath interaction and the other is the Hauge-Maripuu interaction. Non-central components of these interactions have natures different to each other. Moreover, it is shown that different kinds of mechanism for determining the energy levels occur in the Cohen-Kurath and Hauge-Maripuu calculations. 相似文献
952.
Far infrared reflection and Raman spectra of InSe were measured at 5, 77 and 300 K. Phonon frequencies obtained by reflection spectra were well explained by two-point phonon combination. The crystal structure of-type was confirmed at low temperature. Ion blocking analysis supported also no change of phase by temperature in this semiconductor. 相似文献
953.
The Chao modification of the Redlich-Kister equation for correlating liquid activity coefficients is further modified to facilitate the evaluation of the constants. The determination of liquid activity coefficients at infinite dilutions by means of an ebulliometer with the consideration of vapor hold-up in the condenser is proposed. Both of these proposals are equally applicable to isothermal data and to isobaric data.For the purpose of illustration, vapor-liquid equilibrium data for the binary system acetone-methanol together with the azeotropic point and the liquid activity coefficients at infinite dilutions were determined at 760 Torr. The validity of the correlated data was confirmed with the enthalpies of mixing data at saturation, available in the literature. 相似文献
954.
New types of some carbonyl- and cyano-phosphonium ylide complexes of palladium(II) were readily prepared in good yield by treatment of the corresponding bis(phosphonium)hexachlorodipalladate, [R3P+-CH2-Z]2[Pd2Cl6]2? (R3P = Ph3P, Z = COMe, COOEt, CONH2 or CN; R3P = PhMe2P, Z = COPh), with sodium acetate. 相似文献
955.
956.
957.
Sato M Furuike T Sadamoto R Fujitani N Nakahara T Niikura K Monde K Kondo H Nishimura S 《Journal of the American Chemical Society》2004,126(43):14013-14022
Mono-, di-, and trisialyloligosaccharides were introduced to mutant insulins through enzymatic reactions. Sugar chains were sialylated by alpha2,6-sialyltransferase (alpha2,6-SiaT) via an accessible glutamine residue at the N-terminus of the B-chain attached by transglutaminase (TGase). Sia2,6-di-LacNAc-Ins(B-F1Q) and Sia2,6-tri-LacNAc-Ins(B-F1Q), displaying two and three sialyl-N-acetyllactosamines, respectively, were administered to hyperglycemic mice. Both branched glycoinsulins showed prolonged glucose-lowering effects compared to native or lactose-carrying insulins, showing that sialic acid is important in obtaining a prolonged effect. Sia2,6-tri-LacNAc-Ins(B-F1Q), in particular, induced a significant delay in the recovery of glucose levels. 相似文献
958.
959.
The first synthesis of mispyric acid (1), an inhibitor of DNA polymerase beta with a novel triterpene skeleton, was achieved by starting from isoprene (2), geraniol (6) and 1,5-dimethoxy-1,4-cyclohexadiene (14). The absolute configuration of the naturally occurring 1 was determined as 2S,4S. 相似文献
960.
Trypanocidal constituents of Pogostemon cablin were investigated. Activity guided isolation of the acetone extract resulted in isolation of three new sesquiterpene hydroperoxides 1-3, together with a known sesquiterpene, patchouli alcohol (4). In vitro minimum lethal concentrations of the hydroperoxides 1-3 against epimastigotes of Trypanosoma cruzi were 0.84 microM (1), 1.7 microM (2) and 1.7 microM (3). The activity of the corresponding alcohols and patchouli alcohol was very weak (MLC>200 microM). 相似文献