分散

In this thesis, multi-wall carbon nanotubeswas worked as a modified agent. The working electrode was a glassy carbon electrode or graphite electrode. A saturated calomel electrode and a platinum electrode were used as the reference and the auxiliary electrode respectively. Some pharmaceutics'electro-chemical behavior has been studied with great details. The main researches were summarized as follows: The acid-treated CNT was successfully dispersed into the DMF by using ultrasound technology.

本论文以多壁碳纳米管为修饰剂，以玻碳电极和石墨电极为工作电极，铂丝电极为对电极，饱和甘汞电极为参比电极，研究了几种药物的电化学行为及其检测方法，取得了以下研究结果：以N，N-二甲基甲酰胺为分散介质，将酸化后的MWNT超声分散于DMF中，获得分散液。

The variation of particle size in dispersed phase was determined by the changeable value of interface tension.

本文认为，两相之间的界面张力是影响分散体系最终结果的内在因素，界面张力的变化从根本上决定着分散体系中分散相粒子的大小；表面活性剂分子在界面上的排列方式是影响界面张力的主要因素；临界胶束浓度CMC是决定界面上表面活性剂分子排列情况的定量判据。

Studies are carried out on the feasibility of two kinds of sulfates as the dispersion medium of CPAM dispersion polymerization, as well as the impact of different kinds of dispersants on CPAM dispersion polymerization.

考察了CPAM分散聚合中，两种不同硫酸盐作为分散介质的可行性，并详细讨论了不同类型的分散剂对盐水介质中CPAM分散聚合的影响。

The gist of the mechanism is that the pH value in the surface layer of disperse phase particle is different from in the dispersion medium and the reason for this is that the surface layer of the particle shows a character of buffer solution.

首次提出在PUA水分散液这样的非均相体系中，分散相粒子表层与分散介质中pH值不同的观点，并认为这种差异是由于粒子表面层具有缓冲溶液的性质造成的。

With the treatment of silicone coupling on the surface of nano-Al2O3 particles and the action of mechanical decentralization and ultrasonic wave, the particles were dispersed in the matrix of epoxy resin.

采用对纳米颗粒表面进行硅烷偶联处理和机械分散与超声波振动分散相结合的方法，实现了氧化铝纳米粒子在环氧树脂中的分散。

This dissertation involves the study of the growth dynamics of colloidal particles under unequilibrium and irreversibility condition. Firstly, it is of interest to investigate whether the ideal diffusion or reaction-limited aggregation universal behavior can be observed for the initially polydisperse practical system of basic yttrium carbonate as well. The fractal structure of basic yttrium carbonate aggregate cluster was observed using transmission eletron microscopy. The aggregation kinetics of basic yttrium carbonate colloids was studed using dynamic 1ight-scattering techniques. At 1.00mol/l NaCl solution the fast diffusion-limited aggregation behavior was observed with an increase in the aggregate size over time described by a power law. The aggregates are characterized by a fractal dimension D=1.82. The disordered and ramified cluster is consisted of primary colloidal particles and tenuous and more open. These are in good agreement with those observed for other colloidal system such as colloidal gold (1.86), silica (1.85) and polystyrene latex (1.82) in diffusion-limited aggregation from the static and dynamic light scattering by Lin. Therefore ideal diffusion-limited aggregation behavior can be observed in practical polydisperse system as well. Smoluchwski and fractal theories were used to obtain the aggregation rate constant for initially polydisperse system for the first time.

本论文研究胶粒的非平衡不可逆聚集动态学，分为两个部分，第一部分是通过实验研究一个新的初始多分散的碱式碳酸钇胶粒实际体系中，聚集标度性质的普适性，即使用透射电子显微技术观测聚集粒子簇的分形结构，使用动态激光光散射研究碱式碳酸钇胶粒的聚集动力学，胶粒带电而产生静电排斥作用使得碱式碳酸钇胶粒处于稳定状态，当加入电解质NaCl溶液时，碱式碳酸钇胶粒间的Debye-Hückel屏蔽距离缩短，从而降低静电排斥能垒，引起胶粒发生不可逆聚集，加入电解质NaCl的浓度为1.00mol/l时，碱式碳酸钇胶粒进行快速聚集，经历扩散控制聚集机理，形成结构疏松、更为开放的分形聚集粒子簇，其分形维数为1.82，碱式碳酸钇胶粒聚集增长动力学遵循幂函数增长规律，与Lin等使用静态激光光散射和动态激光光散射测量硅胶(1.85)、金胶(1.86)和聚苯乙烯胶乳(1.82)在扩散控制聚集状态形成聚集粒子簇的分形维数值以及粒子簇聚集增长的动力学规律相一致，表明胶粒聚集标度性质的普适性质在初始多分散的实际体系中也是存在的，首次由动态激光光散射的实验数据得到初始多分散胶粒分形粒子簇的聚集速率常数，并且其值与Smoluchowski聚集速率理论预期相符。

Once the dispersion of the element of fluid which corresponds to the maximum on dispersion curve occurs, the increment of sample dispersion coefficient varies directly with the increment of manifold volume travelled through.

对应于流出曲线极大值的流体元一经分散，分散系数的增量与所通过的管路体积的增量成正比。根据串联釜模型，考察了响应曲线的方差与各变量（反应管长，载流流速和进样体积）间的关系以及方差与相应分散系数的关系。

Then, through building the model of the scatteration of the gathered underwrite risk and portfolio risk, the function of scattering risk of going on the market is further expoun.

本文围绕着这两大风险从我国保险公司的现状和承保风险集聚的理论方面分析保险公司上市的必要性和可能性，然后，通过建立承保集聚风险分散和组合投资风险分散的模型，进一步从理论上阐明上市分散风险的功能，最终得出上市是发展我国保险事业的有效途径的结论。

Around the two major risks, the necessities and possibilities are analyzed that insurance companies go on the market from the aspects of the present conditions of Chinese insurance companies and the theory on the gathered underwrite risk. Then, through building the model of the scatteration of the gathered underwrite risk and portfolio risk, the function of scattering risk of going on the market is further expoun...

本文围绕着这两大风险从我国保险公司的现状和承保风险集聚的理论方面分析保险公司上市的必要性和可能性，然后，通过建立承保集聚风险分散和组合投资风险分散的模型，进一步从理论上阐明上市分散风险的功能，最终得出上市是发展我国保险事业的有效途径的结论。

The major concern is the characteristics and its properties of dispersion process of different mixing technology. It is suggested that the development of polyisocyanate and spray equipments be strengthened to realize the series turn of two-pack waterborne polyurethane coating and reduce the production cost.

对强力分散技术、相转化技术、自分散技术等分散过程的特点、性能和聚合物多元醇的要求进行了重点评述，并指出今后应加强对多异氰酸酯和涂装设备的开发，以利于双组分水性聚氨酯涂料的系列化及其成本的降低。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。