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Yongqiang Zhang ShengzhengWang Zhenyuan Miao Jianzhong Yao Wannian Zhang Chunquan Sheng 《中国化学》2013,(9):1139-1143
Iodiconazole is a novel antifungal agent that was developed in its racemic form. In order to investigate the ef- fects of the chiral center on the antifungal activity, R- and S-isomers of iodiconazole were prepared on the basis of the asymmetric Sharpless epoxidation. (S)-Iodiconazole was proved to have better antifungal activity than the (R)- isomer. The binding modes of the two isomers with lanosterol 14~z-demethylase were clarified by molecular dock- ing. 相似文献
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This Letter further investigates the full state hybrid projective synchronization (FSHPS) of chaotic and hyper-chaotic systems with fully unknown parameters. Based on the Lyapunov stability theory, a unified adaptive controller and parameters update law can be designed for achieving the FSHPS of chaotic and/or hyper-chaotic systems with the same and different order. Especially, for two chaotic systems with different order, reduced order MFSHPS (an acronym for modified full state hybrid projective synchronization) and increased order MFSHPS are first studied in this Letter. Five groups numerical simulations are provided to verify the effectiveness of the proposed scheme. In addition, the proposed FSHPS scheme is quite robust against the effect of noise. 相似文献
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Xinhuan Yan Junqing Sun Yongbin Fang Zhenyuan Xu Wenjing Wang 《Frontiers of Chemistry in China》2006,1(1):41-44
The Pt-Sn-B/carbon nanotubes (CNTs) catalyst was prepared by impregnation-chemical reduction method. Its catalytic performance
was evaluated by liquid-phase hydrogenation of chloronitrobenzene (CNB). The results showed that the catalyst had higher catalytic
performance than common hydrogenation catalysts. The conversion of CNB could reach 99.9%, and the dechlorination of chloroaniline
(CAN) was less than 1.9% when catalyzed by Pt-Sn-B/CNTs and more than 8.0% when catalyzed by common hydrogenation catalysts.
X-ray diffraction and selected area electron diffraction analysis showed that Pt-Sn-B/CNTs had an amorphous alloy structure
that can improve catalytic performance. Transmission electron micrograph image showed that the catalyst particles were highly
distributed on the surface of CNTs. The hydrodechlorination of CNB was mainly affected by the unique structure of CNTs and
the nature of the amorphous metals on the surface of CNTs. The relationship between the interaction of CNTs and amorphous
metals and the catalytic performance of the catalyst is also discussed.
Translated from the Chinese Journal of Catalysis, 2005, 26(3) (in Chinese) 相似文献
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微量进样-火焰原子吸收光谱法测定豚鼠内耳外淋巴液中钙、镁、钾、钠等元素含量 总被引:2,自引:0,他引:2
采用直接定量取样稀释、微量进样-火焰原子吸收光谱法测定了豚鼠内耳外淋巴液中Ca、Mg、K、Na等元素含量。方法简便、可靠,满足了生物样品测定的要求。 相似文献
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交联聚丙烯酰胺吸水凝胶的强度 总被引:1,自引:0,他引:1
高吸水材料是一类新型的功能高分子材料,已有广泛开发和应用。本文讨论了含大量无机填料膨润土的阴离子型交联聚丙烯酰胺(JSWAM)吸水凝胶的强度及其形态结构。 吸水材料JSWAM的制备:将填料搅拌分散于丙烯酰胺水溶液中,同时加入规定量的甲叉基双丙烯酰胺、过硫酸铵、碱,而后聚合并水解。将聚合物胶块造粒、烘干、粉碎。凝胶强度 相似文献
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ANEXAMPLEOFPDEWITHTWOATTRACTORSWangGuanxiang(王冠香)(DepartmentofMathematics,SuzhouUniversity,Suzhou215006P.R.China)XuZhenyuan(徐... 相似文献