Ce（Ⅳ）离子氧化环己酮的反应动力学及机理

在25～40℃范围内用分光光度法研究酸性介质中Ce（Ⅳ）离子氧化环己酮（Re）的动力学机理．结果表明：反应对Ce（Ⅳ）为一级反应,对还原剂环己酮为一级反应;表观速率常数随[H^＋]的增加而增加,随[HSO4^-]的增加而减小;无盐效应;反应中有自由基的存在．据此,提出了Ce（Ⅳ）氧化环己酮的反应机理,能很好地解释全部实验现象,结合反应机理找到了本反应体系的动力学活性物种Ce（SO4）^2＋,并求得30℃时,速控步骤的速率常Kn=3.12mol^-1Lmin^-1.     

半无界区域上热传导方程第三和动力学边界条件的开拓法求解

关于半无界区域上带有第一,第二边界条件的热传导方程,前人已经用开拓法求解出它们的解的一般表达式。但第三边界问题,目前还没有现成的解的表达式;而动力学边界条件,国内外的书籍都甚少涉及。基于此,本论文尝试用开拓法求解第三边界和动力学边界问题的解的表达式。     

Kinetic analysis of γ-glutamyltransferase reaction process for measuring activity via an integration strategy at low concentrations of γ-glutamyl p-nitroaniline

At 0.12 mmol/L γ-glutamyl p-nitroaniline (GGPNA), an improved integrated method was developed for kinetic analysis of γ-glutamyltransferase (GGT) reaction process and the integration with the classical initial rate method to measure serum GGT. For the improved integrated method, an integrated rate equation, which used the predictor variable of reaction time and considered inhibitions by both GGPNA and products, was nonlinearly fit to GGT reaction processes. For the integration strategy, classical initial rates were estimated when GGPNA consumption percentages were below 50%; otherwise, maximal reaction rates of GGT were estimated by the improved integrated method and converted into initial rates according to the differential rate equation at 0.11 mmol/L GGPNA. The integration strategy was validated using optimized GGT kinetic parameters and 10-s intervals to record reaction curves within 8.0 min. By the integration strategy, there was a linear response from 0.9 to 32.0 U/L GGT, coefficients of variation were below 3.5% for GGT from 8.0 to 32.0 U/L (n=5), and GGT activities in clinical sera responded linearly to their classical initial rates at 2.00 mmol/L GGPNA with an expected slope. Therefore, the integration strategy was successful in measuring GGT at 0.12 mmol/L GGPNA.     

Stomatocyte structural color-barcode micromotors for multiplex assays

Artificial micromotors have a demonstrated value in the biomedical area. Attempts to develop this technology tend to impart micromotors with novel functions to improve the values. Herein, we present novel structural color-barcode micromotors for the multiplex assays. We found that, by rapidly extracting solvent and assembling monodispersed nanoparticles in droplets, it could form stomatocyte colloidal crystal clusters, which not only showed striking structural colors and characteristic reflection peaks due to their ordered nanoparticles arrangement, but also provided effective cavities for the integration of functional elements. Thus, the micromotors with catalysts or magnetic elements in their cavities, as well as with the corresponding structural color coding, could be achieved by using the platinum and ferric oxide dispersed pre-gel to fill and duplicate the stomatocyte colloidal crystal clusters. We have demonstrated that the self-movement of these structural color-barcode micromotors could efficiently accelerate the mixing speed of the detection sample and greatly increase the probe–target interactions towards faster and more sensitive single or multiplex detection, and the magnetism of these barcode micromotors enables the flexible collection of the micromotors, which could facilitate the detection processes. These features make the stomatocyte structural color-barcode micromotors ideal for biomedical applications.     

我国运动人体科学本科专业运动生物化学课程群开设现状分析

本文通过对我国9所体育院校运动人体科学本科专业运动生物化学课程群开设现状进行调查与分析,以期为运动生物化学学科的发展与建设方面提供理论参考.结果显示,我国运动人体科学本科专业运动生物化学课程群的设置存在较大差别,一类是由生物化学基础与运动生物化学及应用课程组合而成,该课程群有利于知识的前后承接,连贯一致;另一类由运动生袖化学及实验课程构成,此种课程群缺少基业知识的支撑,无法达到培养目标;同时,该专业运动生物化学教材建设存在严重滞后.这些均为该学科在未来发展过程中亟待解决的问题.     

Li3N材料的新高压相预测

该文采用基于密度泛函理论的赝势平面波方法,为了探索Li3N材料的相变路径,系统地研究了Li3N材料常压相结构（α-Li3N）的动力学稳定性．同时,根据Landau理论,提出了一个新的动力学稳定的高压相结构,其空间群为P-3ml．     

匀变速平动参考系中的动力学方程

讨论匀变速平动参考系中力与运动的关系及动力学方程的应用。     

Mcc的结构及其中尺度环境场的动能收支分析

用滤波方法分析了一例发生在珠江口附近地区的Mcc的中尺度结构,结果表明,在对流层下部有中尺度的气旋性涡旋与Mcc相应,涡旋的中心轴线随高度向西北方向倾斜,在地面涡旋的上方200hPa层上,是一中尺度的反气旋性涡旋,中尺度的辐合(散)中心和上升运动中心偏于Mcc的西部,扰动温度场也是非对称的,在对流层上部没有中尺度的暖高压。此外,本文还计算分析了Mcc的中尺度环境场的动能收支。     

聚丙烯催化裂解的动力学方法研究

使用粉煤灰作为催化剂,对聚丙烯进行热解处理,并用程序升温的热重法(TG)和恒温法两种模型方法对热解反应进行研究。结果表明,这两种方法都适用于聚丙烯的催化降解,且粉煤灰含量为2%时,恒温模型计算得到的反应活化能为196kJ/mol,TG模型计算的结果是233kJ/mol(反应级数为1)。从两种模型计算的计算结果与实验结果的拟合情况来看,恒温法得到的结果与实验结果更加吻合。     

催化动力学光度法测定水中痕量锰(Ⅱ)

在HAc NaAc介质中 ,以氨三乙酸 (NTA)为活化剂 ,锰 (I1)对于高碘酸钾氧化灿烂绿的反应具有强烈的催化作用 .建立了催化动力学光度法测定痕量锰 (II)的新方法 .该方法的检出限为 2 .2 2× 10 - 1 1 g/mL ,测定线性范围为 0— 12ng/mL .直接用于环境水样中锰的测定 ,结果满意