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SO〓〓/M〓O〓 solid superacid was applied to the photocatalytic oxidation of organic pollutants for the first time. Porous SO〓〓/TiO〓 solid superacid catalysts with high specific surface area were prepared by sol-gel method. The photocatalytic degradation of bromomethane was used as model reaction. The influence of impregnation with H〓SO〓 solution on the structure of catalysts and their photocatalytic performance was systematically studied by using X-ray diffraction, X-ray photoelectron spectroscopy, N〓 sorption analysis applying BET method, UV-Vis diffuse reflectance spectroscopy, FTIR spectroscopy, O〓-TPD and photocatalytic activity measurement. The acidity of TiO〓-based catalysts was investigated by Hammett indicator method, NH〓-TPD and IR spectra of pyridine adsorbtion. The mechanism of superacidifing effects on photocatalytic performances such as the photocatalytic degradation rate of bromomethane, apparent kinetic constant and apparent quantum efficiency was discussed.The results indicated that SO〓〓 is combined with metal ions of TiO〓 in a chelating bidentate mode.

本文首次将SO〓〓/MxOy型固体超强酸催化剂用于光催化氧化有机污染物研究，采用溶胶-凝胶法制备了具有多孔性和大比表面结构的二氧化钛基固体超强酸光催化剂SO〓〓/TiO〓，以光催化降解溴代甲烷为模型反应，系统地研究了H〓SO〓浸渍处理对催化剂表面酸性及其气相光催化性能的影响，结合XRD、BET、XPS、FTIR、Hammett指示剂法、吡啶吸附红外光谱、NH〓-TPD、O〓-TPD、紫外可见漫反射光谱等多种表征手段，深入地讨论了超强酸化对TiO〓的改性机理，阐明了引起SO〓〓/TiO〓超强酸催化剂光催化降解溴代甲烷的转化率、表观反应速率常数和表观量子效率变化的本质原因。

The structure image of polymers were observed by microscopy and scanning electron micrograph. Porogenic solvent mixture was of advantages in the process of forming porous structure polymers during its polymerization. Absorption charateristic of conventional SPE column was proved by catalytic-kinetic spectrophotometric determination of nitrite, which was a system of nitritre-potassium bromate -bromothymol bule.

通过SEM表征了原位聚合法制备的SPE微柱具有多孔网状结构，显微观察法与SEM表征法结合起来，证实在有致孔剂存在的条件下有利于原位聚合反应形成多孔网状结构的SPE微柱。

The SEI film on the surface of three kinds of carbonous materials: Mesocarbon Microbead; Porous Carbon and Synthetic Graphite, which can electrochemically insert and extract lithium reversibly, was investigated in the appointed electrolyte.

在指定组成的有机电解液中，选择三类可电化学嵌脱锂的碳材料：中间相碳微球、多孔碳和人造石墨，研究其表面形成的固体电解质中间相膜的电化学性能。

The results show that adsorption of cationic polymers in porous media is affected mainly by electrostatic attraction and hydrodynamic forces.

结果表明，阳离子聚合物在多孔介质中的吸附主要受静电引力和水动力的影响。

The problem of polyethylene wear was not recognized in many early porous cementless designs, and some of these hae failed prematurely because of excessie wear.

在早期多孔表面无骨水泥假体设计中，有许多未认识到聚乙烯磨损的问题，其中一些因过度磨损而过早失败。

To investigate the effect of surfactant self-assembling properties on the template synthesis of porous inorganic materials, the critical micelle concentration of surfactant cetyl trimethylammonium bromide was measured in both water and aqueous ethanol solvent using steady-state fluorescence techniques.

为了研究乙醇－水混合溶液中表面活性剂的自组装特性对多孔无机材料模板法合成的作用，采用稳态荧光法测定了乙醇－水混合溶剂的组成变化对十六烷基三甲基溴化铵临界胶束浓度的影响。

Some people have reported seeing more semivolatile elements in a class of interplanetary dust particles called "chondritic porous" IDPs.

曾有人报告在一类被称作&多孔球粒陨石&的行星尘埃颗粒中见到了较多的半挥发性元素。

Methods: Based on part one, implanted the chondroblast of second generation on porous materials, the cells were distributed randomly into three groups, A was PDLLA group, B was PDLLA/chitosan group, C was chondroblast groups.

利用第一部分经成软骨诱导、并经鉴定具有成软骨细胞表型的第一代细胞，分别种植于PDLLA多孔材料表面、PDLLA／壳聚糖多孔材料表面，分PDLLA材料组、PDLLA／壳聚糖材料组、诱导成软骨细胞单层培养组。

These experiment focus on the chondroblast induction in MSC, the culture technology in monolayer system and triaxial system,in order to explore the ideal condition of chondroblast induction of MSC,the molecul mechanism of maintenance chondroblast phnotype and the interaction between cells and porous materials.

通过骨髓基质干细胞的原代分离、培养及成软骨诱导，观察原代细胞扩增能力及其向成软骨方向分化的潜能；寻求骨髓基质干细胞向成软骨方向分化的理想诱导条件；u）观察经成软骨诱导的财C在PDLLA、PDLLA／壳聚糖多孔载体上三维的增殖状况，探求细胞与材料间的相互作用；门）观察经成软骨诱导的 MSC在体外三维培养系统中细胞因子的释放状况，了解维持诱导细胞软骨表型的合适条件及作用机制。

This investigation include two parts: lThe primary culture, chondroblast induction and evaluation of MSC. 2The chondroblast cultured with compound porous materials PDLLA and PDLLA/chitosan.

第一部分人骨髓基质干细胞的原代分离、体外培养、成软骨诱导及鉴定目的：了解骨髓基质干细胞原代培养的特性及增殖能力，探讨轻度离心和化学限定培养基法诱导骨髓基质干细胞向成软骨方向分化的作用；为软骨组织工程提供足量、合适的种子细胞。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。