锌试剂-Cu(Ⅱ)金属配合物与牛血清蛋白作用研究

The interaction of Zincon(ZCN)-Cu(Ⅱ) metal complexe with bovine serum albumin (BSA) was investigated by UV-Vis spectrophotometric method in acidic buffer solution (pH=4.25). ZCN-Cu(Ⅱ)-BSA was a blueness color coordination compound, with maximum absorption at 605 nm with 10 nm, 60 nm and 140 nm of red shift compared to the ZCN-Cu(Ⅱ) complex, ZCN-BSA complex and ZCN. According to molar ratio method and dual wavelength method, the apparent molar absorptivity of ε was equal to 4.82×10⁵ L·mol^-1·cm^-1. Conditional constants were defined as ZCN∶Cu(Ⅱ)∶BSA=10∶5∶2. Condition combination constant of ZCN-Cu(Ⅱ) and BSA K was 8.82×10⁴. A combined mechanism was suggested between BSA and ZCN-Cu(Ⅱ) by electrostatic force (Primary action force) and distant water force. Position of Impact might be arginine, proline, histidine, tyrosine and cystine. Contemporary formation of electron transfer complexes is an important cause in forming ZCN-Cu(Ⅱ)-BSA complexes.     

卫星PSAC载荷陆地观测中气溶胶和地表参数的信息量分析

针对卫星载荷大气校正仪分系统PSAC在陆地上空气溶胶反演领域的应用需求,基于最优化反演框架,引入信息量和后验误差分析方法,讨论了不同观测模式下气溶胶和地表参数的信号自由度（DFS）的观测角度依赖性,给出了气溶胶和地表参数的后验误差。在此基础上,分析了气溶胶和地表参数的DFS随光学厚度（AOD）和地表反射率的变化趋势。研究表明：1）不同的观测几何下,气溶胶参数总的DFS有很大差异,反演气溶胶参数的最优散射角范围是140°～180°; 2）任意观测角度,细粒子为主的细模柱浓度,粗粒子为主的气溶胶柱浓度和能被反演出来,谱分布部分参数以及折射指数部分参数在大散射角能被反演获得; 3）对不同AOD和地表反射率下参数的DFS分析,偏振信息的增加有助于亮地表下气溶胶参数的反演,增加短波红外波段能提升在AOD高值条件下对地表参数的获取能力。     

Mechanochemical Reactions of Fullerenes under High-Speed Vibration Milling

Since a novel technique called "high-speed vibration milling" (HSVM) was first applied to the Reformatskytype reaction of C60 in 1996, [1] this technique has been applied to various kinds of fullerene functionalizations including the preparation of C120. [2] Most recent reactions of fullerenes under HSVM conditions will be discussed: (1)reaction of C60/C70 with N-alkylglycines and aldehydes (Scheme 1); (2) reaction of C60 with active methylene compounds in the presence of bases (Scheme 2); (3) reaction of C6o with diazo compounds (Scheme 3); (4) reaction of C6o with anthracene derivatives (Scheme 4).     

综放极限平衡区顶煤渗透性的计算模型

基于放顶煤开采中顶煤渗透率对工作面安全生产的重要性, 对煤壁前方极限平衡区内顶煤渗透率的变化规律进行了研究. 应用损伤力学和数理统计方法对顶煤垂直和水平应变进行了研究分析, 并建立了数学模型. 以甲烷气体为渗流体, 应用自制三轴实验机对煤样体积应变与渗透率的关系进行了试验研究, 并利用多项式拟合方法对试验结果进行了分段拟合. 结果表明：根据所建立的顶煤应变计算模型, 可以求出综放顶煤内任意点的体积应变, 且顶煤的水平应变与其距底板的高度无关. 依据试验及拟合所得到的煤体体积应变与渗透率的函数关系, 可以求得顶煤内任意点渗透率. 最后对计算模型进行了实践检验.     

具有扰动抑制的高空飞艇姿态控制系统设计

工作于距海平面20～30 km高度的高空飞艇,虽然可以避免雨和暴风雪的影响,但依然受风和大气紊流的影响.为了克服这些外部扰动的影响,处于定点悬停阶段的高空飞艇,需要消耗大量的能量,而高空飞艇所能提供的能量是有限的,系统能耗将直接影响高空飞艇的负载能力和驻空时间.针对大气紊流对高空飞艇定点悬停阶段姿态调整的影响,利用内模控制设计原理具有通过设计内模,可以将扰动信号反馈到系统的输入端,由此便可以直接对扰动进行控制的特点,设计了高空飞艇纵向姿态控制器,仿真结果表明,所设计的内模控制器可有效地抑制大气紊流的影响.