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排序方式: 共有766条查询结果,搜索用时 78 毫秒
671.
Ke Qiang DING Zhen Bin JIA Qing Fei WANG Juan BAI Ru Ting TONG Xin Kui WANG Hui Bo SHAO* Institute of Coal Chemistry Chinese Academy of Science Taiyuan Department of Chemistry Hebei Teachers University Shijiazhuang D 《中国化学快报》2002,13(4)
Recently, the adsorption behavior of protein on solid substrate has attracted much attention for the reason that adsorption on a substrate is the first key step for other further electrochemical investigation1. Meanwhile the free adsorption could provide a relative well-ordered structure, with which some fundamental study could be carried out conveniently2. As we know, the electrochemical impedance spectroscopy (EIS) method has become one of the powerful techniques to detect the change of i… 相似文献
672.
Jin Long WANG Zi Cheng LI Bin XIONG Lei XIE Liang Jie YUAN Ju Tang SUN* College of Chemistry Molecular Sciences Wuhan University Wuhan 《中国化学快报》2003,14(12):1303-1305
Today, batteries with high capacity, good cyclability, long life and environmental goodness are much required to meet some pressing demands of our modern society. In principle, lithium ion cells can satisfy these requirements1. But the properties of the cathode materials have limited the further development of the lithium ion cells. The studied cathode materials before were mainly LiCoO2, LiMn2O4, LiNiO2. The LiCoO2 has disadvantages including cost and environmental risk although it is… 相似文献
673.
674.
本文详细地讨论了新生代火山岩的微量元素地球化学特征。研究表明,中国东南部之下的上地幔,相对球粒陨石质地幔,富集强HYG元素,以及从沿海向内陆玄武岩浆源的深度变大。新生代玄武岩质火山作用发生于张裂的大陆边缘构造环境中。相反,以长英质为主的中生代火山岩喷发于活动大陆边缘的构造环境中。由超镁铁质岩包体推导的地温分布表明,中国东部新生代张裂作用主要受热地幔底辟作用所控制。 相似文献
675.
Le Xin SONG* Department of Chemistry University of Science Technology of China Hefei 《中国化学快报》2002,13(10)
The interaction between ethyl orange (Eto, guest) and β-cyclodextrin dimers (1a~d, host) bridged with 2-t-butoxycarbonyl(Boc)-amino diacid was investigated. A remarkable synergic complexation of two cavities in host molecule was observed. 相似文献
676.
The chemistry of samarium (II) iodide (SmI2) is of current interest in organic synthesis. SmI2 has been developed as a powerful, versatile and ether-soluble single-electron reductant and many examples have been reported of its use in the reduction of various functional groups1. Though SmI2 is a useful reagent, storage is difficult because it is very sensitive to air oxidation. On the other hand, metallic samarium is stable in air and has strong reducing power (Sm3+/Sm=-2.41 V). These pr… 相似文献
677.
Tong WU De Yun KONG Hui Ting LI* Shanghai Institute of Pharmaceutical Industry Shanghai 《中国化学快报》2002,13(11)
Helicia nilagirica Beed. belongs to the plant of Proteaceae family. The seeds of the plant is for treatment of insomnia and neurasthenia in Jingpo nationality in Yunnan Province1. Helicid and helicidol were isolated from the seeds of the plant2,3, and the helicid was recorded in the Yunnan Pharmacopoea at the 1987 edition. The chemical constituents of the leaves of this plant has not been reported yet in the literature. This paper is concerning the study of the chemical component of the… 相似文献
678.
679.
Spherical foam growth in Al alloy melt 总被引:6,自引:0,他引:6
The ultra light metal structure, realizing the light-ness and multifunction of structural material, has a bright future in high-tech and civil fields and is be-coming one of the hotspots in developed countries in 21 century[1―8]. Preparing Al foam by mel… 相似文献
680.
ZHAO Ganqing XIE Jimin* LU Xiaoqing SUN Lu . College of Chemistry & Chemical Engineering Jiangsu University Zhenjiang China . College of Chemistry Chem. Eng. Pingdingshan University Pingdingshan China 《Chinese Journal of Reactive Polymers》2006,(2)
1. INTRODUCTION The partial oxidation of alkenes (forming acids, aldehydes and alcohols) is of considerable interest to the chemical industry. In most cases, more than one oxygenated product is formed from a given starting material and all products are susceptible to complete oxidation to carbon dioxide and water [1]. As mimetic oxygen carrier or oxidation catalyst, metalloporphyrins have been widly studied [2~7]. Among the non-porphyrin systems, the manganese complexes of Schiff base are… 相似文献