异色满并三氮杂酮化合物的合成

异色满(isochroman)是自然界中某些抗菌素和毒菌的基本骨架组成。例如,卡拉真菌素(kalafugin),七尾霉素(nanaomycin)和桔霉素(citrinin)等都是带有异色满环结构的杂环醌。近年来,人们合成了许多具有各种药理活性的异色满类化合物,其中引入异色满环的(艹卓)酚酮具有抑制肿瘤细胞的功能。为了合成类似活性的异色满类化合物,本文选择[1.2.4]三氮杂(艹卓)酮类的七员环系与异色满并环,旨在寻找抗癌新药。     

超滤、高效液相色谱和毛细管电泳的多维组合用于胎脑垂体组织培养液的分离分析

采用超滤、高效液相色谱和毛细管电泳的多维组合分离分析了胎脑垂体组织培养液的成分，比较了各种工具的不同组合产生的分离效果，考察了获取最多信息量或达到最佳分离的条件，获得了满意结果。     

用毛细管电泳-激光诱导荧光-增强型电荷耦合检测器测定痕量氨基酸

本文对用毛细管电泳－激光诱导荧光－增强型电荷耦合检测器测定氨基酸衍生物进行了研究。考察了荧光黄异疏氰酸酯衍生氨基酸的各种条件。在优化条件下，10－8～10－6mol／L浓度范围内精氨酸与其衍生物的荧光强度呈良好的线性关系，最小可衍生化的精氨酸浓度为5×10－10mol／L。     

H_2TPP与AgNO_3在乙醇中的光反应

用紫外可见吸收光谱研究了 5,10 ,15,2 0 -四苯基卟啉 (H2 TPP)的乙醇溶液与AgNO3的乙醇溶液混合后 ,在光照条件下的化学反应。谱图显示H2 TPP发生络合反应 ,生成其二价银络合物Ag(Ⅱ )TPP。银胶能加快该反应的速度。     

葡萄糖、果糖和蔗糖在甲酰胺溶液中的体积性质

报导了含葡萄糖、果糖和蔗糖的甲酰胺溶液的密度数据，无限稀释表观摩尔体积和体积第二维里系数．利用改进的定标粒子理论、基团几何模型和基团加合方法，求解了溶质的空腔生成体积，溶质-溶剂间的氢键作用对体积性质的影响，并和水溶液中的情况进行了比较．     

质谱法测定鲑鱼降钙素及其类似物

应用快原子轰击质谱（ＦＡＢ＿ＭＳ）、电喷雾质谱（ＥＳＩ＿ＭＳ）及基质辅助激光解吸附飞行时间质谱（ＭＡＬＤＩ＿ＴＯＦ＿ＭＳ）分别测定了鲑鱼降钙素类似物，得到了准确的分子质量信息，并对这３种方法的准确度及灵敏度进行了比较。     

钛硅沸石中的一种非活性钛物种

Synthesis of the titanium silicalite TS-1 was first reported by Taramasso et al[1]in 1983. TS-1 has received considerable interest during the last decade because of its unique catalytic properties in oxidation reactions involving H2O2 as the oxidant. It is accepted that the extraframework Ti species in TS-1 favor the decomposition of H2O2and should be avoided. But in the present study, it was observed that there was a kind of Ti species inactive in both the oxidation reaction and the decomposition of H2O2.     

UV LASER INITIATED STEREOSELECTIVE HOMOGENEOUS CATALYSIS POLYMERIZATION OF PHENYLACETYLENE

In this paper, the stereoselective homogeneous catalysis polymerization of phenylacetylene by using two kinds of catalysts W(CO)_5CH_3I and W(CO)_4I_2 produced from UV laser photolysis of W (CO)_6 in CH_3I, I_2—C_6H_6 and CHI_3—C_6H_6 respectively was studied. The effects of laser energy, laser irradiation time and lifetime of catalyst on the polymerization of phenylacetylene were discussed. The photoproducts of W (CO)_6 in CH_3I, I2—C_6H_6 and CHI_3—C_6I_6 were determined by IR spectra. The structures of polyphenylacetylene obtained by W (CO)_5CH_3I and W (CO)_4I_2 catalysts were characterized by IR spectra and ~1H NMR spectra.     

聚酯在超临界甲醇中的降解特性

研究在间歇高压反应器中聚对苯二甲酸乙二醇酯(PET)、聚对苯二甲酸丁二醇酯(PBT)及聚碳酸酯(PC)在超临界甲醇中的降解反应;通过建立聚酯在超临界甲醇中的降解反应模型,探讨了聚酯在甲醇中降解的机理。结果表明:PET、PBT和PC在甲醇溶液中的降解具有共性,均可分为超临界区、非临界区和中间过渡区三个区域。在超临界区聚酯完全溶于甲醇并降解为原料单体,且对苯二甲酸二甲酯(DMT)和碳酸二甲酯(DMC)的收率均大于90%;聚酯的降解是在聚合物分子链的无规断裂和聚酯进行酯交换反应的双重作用下发生的。     

Role of Bipolar Pulsed DBD on the Growth of <Emphasis Type="Italic">Microcystis aeruginosa</Emphasis> in Three-Phase Discharge Plasma Reactor

Algae in drinking water supplies often bring about impact on the water treatment. In this study, a bipolar pulsed dielectric barrier discharge system in three-phase discharge plasma reactor was constructed for investigating its ability to control excessive growth of cyanobacteria, Microcystis aeruginosa. Experimental results show there was almost no change in optical density immediately after the interruption of electrical discharge, but the decreasing trend of optical density, cell density and chlorophyll-a content was obvious during the incubation period, indicating a significant residual effect of electrical discharge process on the algal growth inhibition. Scanning electron microscopy investigation of algae revealed surface damage, apparent leakage of intracellular contents and pores formed after electrical discharge process, which showed that algal cells had no potential to survive and grow. Compared with the control sample, it was observed that electrical discharge on the algal extracellular products has almost no residual effect and the growth rate of algae slightly decreased before three days storage. Hydrogen peroxide was produced by electrical discharge in the μM level and showed a first-order decay. But at such level, the external addition of hydrogen peroxide alone is not likely to cause the residual effect. These results implicated that the growth inhibition of M. aeruginosa was mainly caused by electrical discharge process, and it made the algal cells lose ability to survive, demonstrating the considerable potential of such an alternative process for efficient water purification.