Objective:To investigate the chemical constituents of ethyl ether spirit of seed coat of Iris.Method:To analyze and identify the chemical constituents by GC-MS.Result:We separated the extraction by GC-MS method,and affirmed 26 peaks by NIST workstation and reference documentation.The contents of ...
Chemical structure, biological and pharmacological activities of apamin, and their relations.APAMINhoney beespropertiesvenomsExistence in rat brain homogenates of ... C Granier,JV Rietschoten - 《Natural Toxins》 被引量: 0发表: 1980年 Chemical structure, biological and pharmacological activities of apamin...
one. In some industrial syntheses, by-product formation can be welcome if the by-products are commercially useful.Diethyl ether, for example, is a by-product of the large-scale synthesis of ethanol (ethyl alcohol) from ethylene. Both the alcohol andetherare valuable and can be separated ...
The products were found to be of low molecular weight. The aromatic nuclei, were after hydrocracking at 440°Ct mainly of the monohydroxyphenyl and phenyl types. Only small amounts of methoxyl groups and aliphatic hydroxyl groups were found to be present. a- and -alkyl-aryl ether bonds were...
(Chemistry) a process that involves changes in the structure and energy content of atoms, molecules, or ions but not their nuclei. Comparenuclear reaction Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 200...
Glass transition characteristics of poly(aryl ether ketone ketone) and its copolymers The glass transition characteristics of poly(aryl ether ketone ketone) (PEKK) have been investigated as a function of backbone structure and crystallizatio... RK Krishnaswamy,DS Kalika - 《Polymer》 被引量: 83发...
Recent Advances in Fabrication of High-Tc Superconductors for Electric Power Applications.- The Local Structure of YBCO Based Materials by TEM.- High Pressure Crystal Growth and Properties of Hg-Superconductors and Quasi-One-Dimensional ... G. Tendeloo,E. Antipov,S. Putilin 被引量: 0发表: 1998...
The models developed for each stage of coalification are derived from chemical modifications of the structure of lignin. 展开 关键词: coalified wood solid-state 13C NMR structural models low-rank coal coalification DOI: 10.1016/0146-6380(90)90132-J ...
Structure of 12.BETA.-O-acetyltomentogenin and hypothetic... The structures of three new polyoxypregnane derivatives, dibenzoylgagaimol, gagaimol-7-methylether, and 7尾-methoxysarcostin, all of which were isolated fr... S Hideo,H Koji,M Hiroshi - 《Chemical & Pharmaceutical Bulletin》 被...
Deciphering the intrinsic kinetics of liquid lithium polysulfides redox process in ether-based flowing electrolyte for Li–S batteries Xiaotao Ma, Huazhao Yang, Yu Li, Xianxian Zhou, ... Shibin Liu Article 131586 Article preview select article Z-scheme Cu2(OH)3F nanosheets-decorated 3D Bi2WO...