氧化物

In this thesis, three major achievements were made in theoretical study: conditions and rules for preparing nano-powders by chemical precipitation are analyzed from the point of view of thermodynamics and kinetics, the principle, standards and experimental method for the aqueous dispersion of nano-scaled metal oxide powders were proposed and verified, mathematical model of nano-filming addition of dopants by chemical coprecipitation was established. In experimental research, nm-ZnO, nm-Bi〓O〓, nm-Co〓O〓 and nm-MnO powder with spherical shape, narrow particle size distribution and small particle size were prepared successfully, highly stable and dispersive aqueous suspensoid of nm-ZnO, nm-TiO〓, nm-Co〓O〓 and nm-MnO powder were prepared successfully and surface modification on these nano-powders was also achieved, 0-3 nanocomposite ZnO varistors with nm-ZnO, nm-TiO〓and nm-MnO respectively were prepared successfully by conventional mechanical attrition, and exhibited much better electrical properties than those of conventional varistors.

综上所述，本文在理论研究方面取得了三项成果：（1）从热力学和动力学角度推导并分析了液相化学沉淀法制备纳米粉体的反应条件和规律，（2）提出了纳米氧化物的水分散体系的设计原理、规范和通用实验步骤，（3）提出了共沉淀的数学模型和计算方法；在实验方面所取得的成果有：（1）成功制备了粒度小、分布窄、形貌对称的纳米氧化锌、纳米氧化铋、纳米氧化钴和纳米氧化亚锰，（2）成功地制备了纳米氧化锌、纳米二氧化钛、纳米氧化钴和纳米氧化锰的高稳定分散悬浮液并实现了干粉体的表面改性，（3）成功地进行了纳米氧化锌、纳米二氧化钛和纳米氧化锰对压敏电阻的0—3复合掺杂实验，试样性能远优于常规压敏电阻，为实现压敏电阻的高能高压化提供了新的方法和思路。

The history and fundamental properties of HTSC, including crystal structure, transport properties, pairing symmetry, psudogap, and stripe phase, were reviewed in Chap.

第一章综述了铜氧化物高温超导体，特别是电子型高温超导体的研究历史和一些基本性质，包括晶体结构、输运性质、超导序参量对称性、赝能隙和条纹相等。

To improve the dielectric performance of the syntactic foam ,a kind of a low density dielectric materisl with high dielectric comstant.

为改善复合泡沫塑料的介电性能，采用金属氧化物粒子填充改性双马来酰亚胺空芯玻璃微球复合泡沫塑料得到了高介电常数、低介质损耗因数、低密度、力学性能良好的电介质材料。

Objective To study the change of nitric oxide, nitric oxide synthetase, malondialdehyde and superoxide dismutase level in cerebrospinal fluid of children with viral encephalitis.

目的 探讨病毒性脑炎患儿脑脊液中一氧化氮、一氧化氮合酶、丙二醛和超氧化物歧化酶的变化特点。

In two deep well anode ground beds at tank zone of Yizheng Pump Station,metal oxide is used as an anode material and obtains good results.

在仪征泵站罐区的2口深井阳极地床中，采用金属氧化物作为阳极材料，取得了较好的效果。

In this paper, we introduce the optical electronegativity Dwglass, to predict basic properties of binary oxide glasses (phosphate, borate, silicate, germinate, tellurite, and titanate).

在本文中，我们引入光学电 DW的玻璃，预测的基本性质二元氧化物玻璃（磷酸盐，硼酸盐，硅酸盐，发芽，碲，钛酸）。

In this paper, the preparation and Temperature Coefficient of Resistance characteristic of nano-VO2 powder/ Poly(3,4-ethylenedioxythiophene) composite is described.

功能复合材料是近年来电子材料研究的热门方向之一，由过渡金属氧化物相与高分子绝缘相组成的复合材料的研究成果屡见报导，而本文所研究的纳米VO2与高分子导电相复合的材料具有负电阻温度系数特性。

Inspects under the different ambient temperature 15℃,25℃,50℃,75℃ condition, hard oxide compound curing product oxidized tendentiousness.

考察不同环境温度15℃，25℃，50℃，75℃条件下，铁的氧化物的硫化产物的氧化倾向性。

PO〓 was used as promote for the V〓O〓/SiO〓 or MoO〓/SiO〓 catalysts, which exists in tetrahedral symmetry on surface of catalysts and form to P-O-M bond.

PO〓在催化剂表面以四配位形式存在，通过与金属氧化物形成P-O-M键，可降低催化剂中M〓的Lewis酸强度。

The present research work focuses on two aspects. On one hand, the most successful alkaloid-derived ligands have been attached to a soluble or insoluble support covalently, but additional OsO〓 is necessary to maintain the consistent catalytic activity during the reuse of supported chiral ligand in the next AD reaction. On the other hand, immobilization of osmium tetroxide based on microencapsulation, ion-exchange techniques, and osmylation of resins has made it possible to recover and reuse of the osmium, but failed to recover the chiral ligand at the same time.

目前的研究主要集中在两个方面：一方面，将手性配体共价键合到不溶或可溶性载体上制成负载手性配体，但在重复使用负载配体时必须补充OsO〓，才能保证催化活性不降低；另一方面，将OsO〓包裹在高聚物微囊内，或运用离子交换技术或共价键合的方法将OsO〓固载在树脂、硅胶或层状双金属氢氧化物材料上，但手性配体却不能同时回收。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。