人工合成铁叶啉Fe(OEP) Cl弛豫现象的穆斯堡尔研究

本文报道了人工合成铁叶啉-Fe(OEP)Cl,Fe(NO₂)(OEP)Cl和Fe(NO₂)₂(OEP)Cl,在77K、300K和室温下外加5KOe磁场时测得的穆斯堡尔谱。用电子自旋-自旋弛豫机制解释了谱线的变化,并讨论在叶淋环中位取代不同数目的(NO₂)基所引起同质异能移位的微小变化。     

流动载体膜阴离子选择电极电位选择性系数规律的探讨

离子选择电极的电位选择性系数K_ij^Pot是衡量电极性能的重要参数。电位选择性系数规律已经有过讨论^[1-3]。本文将对流动载体膜阴离子选择电极电位选择性系数与阴离子结构参数(z/r²)_j的关系进行讨论。     

光子结构论

本文利用初等量子理论提出了一种光子结构模型,认为光子由正负光微子ε⁺和ε^-组成,并利用此模型解释了一些经典光学现象。     

β-榄香烯的钯、铑催化加氢反应研究

β榄香烯是我国首创的抗癌新药榄香烯乳注射液的主要成分［１］,它的结构是在甲基环己烷骨架上连接有３个烯基取代基（１个乙烯基和２个异丙烯基）．研究β榄香烯３个双键上的化学反应活性,对于榄香烯新反应的开发以及榄香烯类化合物构效关系的研究具有很重要的意义...     

A STRUCTURE-PRESERVING DISCRETIZATION OFNONLINEAR SCHRDINGER EQUATION

1.IntroductionManyimportantdifferentialequationsofevolutiontypeinphysicsandmechanicshavespecificgeometricstructure.Forinstance,theHamiltoniansystemsinclassicalmechanics,theSchrodingerequationinquantum,theKorteweg-deVriesandKleinGordonequationsofnonli...     

Design and observations of satellite laser ranging system for daylight tracking at Shanghai Observatory

The first satellite laser ranging system for daylight tracking in China was set up at Shanghai Observatory, Chinese Academy of Sciences. Both false alarm probability due to strong background noises and detection probability of the laser returns with single photon level from satellite in daylight for our system are analysed. The system design and performance characteristics of subsystems, adopted techniques and satellite ranging observations are given. Project supported by the astronomical council of Chinese Academy of Sciences and the National Basic Research Project “Modern Crustal Movement and Geodynamics Research”.     

半导体硅上激光诱导化学沉积镍薄膜

由于激光具有高能量密度、高单色性以及良好的相干性,在表面处理技术中的应用越来越广泛．在金属、半导体和高聚物基体上,从水溶液进行激光诱导的化学沉积引起了人们的极大注意,这种工艺在微电子电路及器件上有广泛的应用前景．与传统的化学镀相比,它具有明显的优越性...     

DEHYDROGENATIVE COUPLING OF METHANE UNDER PULSE CORONA PLASMA OVER A MnO|?/|?-A12O3 CATALYST

Pulse corona plasma was used as an activation method fordehydrogenative coupling of methane at the normal temperature and under' the normal pressure. The exprimental results showed that a great enhancement in the selectivity to C2 was achieved by the combination of pulse corona plasma with a y-Mn2OO3/Y-A12O3 catalyst. The distribution of C2 hydrocarbons was mainly affected by the power input and the nature of the catalyst. In addition, the gas stream direction exerted an influence upon the C2 yield, especially at higher power input.     

铜（Ⅱ）的嘧啶类三元混配配合物的合成及表征

本文合成了二价铜与多取代嘧啶类（Ｌ１或Ｌ２）的配合物,并用元素分析、红外、紫外光谱、摩尔电导和差热－热重分析等方法对它们的性质、结构进行了表征。配合物的化学式为［Ｃｕ（Ｌ１）Ｃｌ２］·１２Ｈ２Ｏ和［Ｃｕ（Ｌ２）Ｃｌ２］。     

化学计量学用于中医药研究

中医药是中华民族的瑰宝,也是中国传统文化的重要组成部分。它的现代化和国际化将对形成具有我国特色的中医药知识经济起到重要作用。中医药的现代化包括探明中医药药效的物质基础、其用药时的化学与药理作用过程等诸多方面。由于中药成分非常复杂,即使是单味药,也是一...