中西医治疗子宫内膜异位症性不孕的现状

本文综述了近年来现代医学及祖国传统医学对子宫内膜异位症(EMT)导致不孕的发病机理及治疗方面进展的概况。     

糖苷配合物与DNA作用机理的电化学研究进展

本文综述了糖苷配合物的合成、表征、生物功能及糖化学研究现状，并对糖苷功能配合物与DNA的作用机理及生物功能的电分析化学研究进行了探讨。着重讨论了应用电分析化学、谱学方法、单晶X-射线衍射分析来研究糖苷功能配合物。引用文献39篇。     

A Kinetic Evidence for the Nitroxyl Radicals Recycling Mechanism in the Photostabilizing Process of HALS

The photoinduced bulk polymerization of a reactive-hindered amine fight stabilizers(r-HALS), 4-acryloyl-2, 2, 6, 6-tetramethylpiperidinyl (ATMP), was performed at 80℃ by using a DPC technique. An unique periodic exponential attenuation-type oscillating curve was found when the polymerization was carried out in air, but this phenomenon was not found in nitrogen.It is supposed that this unique kinetic performance may be attributed to nitroxyl radicals that are produced in situ from the oxidation of ATMP. ATMP polymer with narrow polydispersity (d =1.03) can be obtained by photoinduced solution polymerization of ATMP. The signal detected in ESR may be assigned to the nitroxyl radicals in the matrix of ATMP polymer. Since this kind of recycling of nitroxyl radicals is well documented for the photostabilizing mechanism of HALS, the present results may serve as a kinetic evidence for this mechanism.     

An Integrated Theory of Adsorption and Partition Mechanism and Eash Contribution to Solute Retention in Reversed Phase Liquid Chromatography

With the combination of the the stoichiometric displacement model for retention (SDM-R) in reversed phase liquid chromatography (RPLC) and the stoichiometric displacement model for adsorption (SDM-A) in physical chemistry,the total number of moles of the re-solvated methanol of stationary phase side.nr,and that of solute side in the mobile phase,q,corresponding the one mole of the desorbing solute,were separately determined and referred as the characterization parameters of the contributions of the adsorption mechanism and partition mechanism to the solute retention,respectively.A chromatographic system of insulin,using mobile phase consisting of the pseudo-homologue of alcohols(methanol,ethanol and 2-propanol)-water and trifluoroacetic acid was employed.The maximum number of the methanol layers on the stationary phase surface was found to be 10.6,only 3 of which being valid in usual RPLC,traditionally referred as a volume process in partition mechanism.However,it still follows the SDM-R.Both of q and nr of insulin were found not to be zero,indicating that the retention mechanism of insulin is a mixed mode of partition mechanism and adsorption mechanism.When methanol is used as the organic modifier,the ratio of q/nr was 1.13,indicating the contribution to insulin retention due to partition mechanism being a bit greater than that due to adsorption mechanism.A linear relationship between q,or nr and the carbon number of the pseudo-homologue in the mobile phase was also found.As a methodology for investigating the retention mechanism retention and behavior of biopolymers.a homologue of organic solvents as the organic modifier in mobile phase has also been explored.     

TiO2形态结构与光催化活性关系的研究

本文介绍了TiO2多相光催化剂的作用机理及其结构特性对光催化活性的影响，并对TiO2的品相组成、品粒尺寸、比表面积、表面形态与光催化活性的关系作了综述。     

运用二维相关红外光谱分析技术研究芦丁的热微扰过程

采用傅里叶变换红外光谱法(FTIR)和二维相关分析(2D correlation analysis)技术研究了固态芦丁20℃～160℃的升温过程。实验结果显示，芦丁红外光谱的特征峰在红外图上随着温度升高变化不明显，说明实验中芦丁分子没有发生氧化反应。借助于二维相关分析，提高了谱图的分辨率，将芦丁分子中不同苯环的骨架振动峰在二维同步图上显示并区分开来。同时还揭示了芦丁分子内各官能团之间的相互作用，反映了在热微扰过程中这些基因之间的协同关系和变化的先后顺序。分析结果表明；芦丁分子中两个苯环，杂环的C=O及=C-O-C基因发生了相互作用。其变化的顺序是和含氧杂环相连的苯环，C=O，=C-O-C和含氧杂环相并的苯环。此结论与芦丁的氧化反应机理相一致。总之，二维相关红外分析可以作为研究芦丁热微扰过程中结构动态变化的一种新方法，也为芦丁在氧化过程中的机理研究提供了一个重要的理论依据。     

溶剂浓度对PVDF相转换膜大孔结构的影响

提出决定大孔能否发展的初始分相点处溶剂浓度临界点的概念 ,认为初始分相点处较高的溶剂浓度有利于大孔的发展 ,溶剂浓度低于一定的界限后 ,大孔停止发展 ,转为海绵状结构 .实验考察了不同凝胶液组成下制得的PVDF中空膜的结构 ,建立了相应的传质模型 ,模拟不同制膜条件下初生态膜内的组成分布情况 ,根据初始分相点处溶剂浓度临界点的概念 ,预测膜的形态结构 .模拟结果与相应制膜条件下的电镜照片有很好的对应关系 ,证明了上述大孔形成机理的正确性 .