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The results indicate that the polarizabilities of total and л electrons in crease with the increasing of the ring numbers, but the increasing rate reduces gradually.

结果表明：全价电子极化率和л电子极化率均随并苯数目的增加而增大，但增率逐渐降低，当n值足够大时，增率趋于一常数；极化率沿分子链增长方向的增率远远大于其它方向；л电子极化率的增率高于全价电子。

We synthesized some inorganic and organosilicon polymer-supported ruthenium complexes and used them as catalysts for oxidation of styrene.

我们合成了几种无机和有机硅高分子负载钌的催化剂并用于催化苯乙烯选择性氧化制备苯甲醛的反应。

In the paper we still studied that organic thin film transistors with different active layer, pentacene and CuPc, fabricated by shadow mask to investigate characteristics of device.

本论文还对通过掩膜的方法制作得以酞菁铜和并五苯为有源层的顶栅极有机薄膜晶体管的特性进行了研究。

With L-DOPA as the starting chiral phenylalanine derivatives, construction of the skeleton of Phthalascidin was studied. Firstly, starting from L-DOPA and 3,4-dimethoxyphenylalanine, an amide 〓 was obtained, and a modeling cyclization reaction was carried out but failed to give the anticipated product.

二、对由苯丙氨酸甲酯衍生物通过Bischler-Napieralski反应合成四氢异喹啉—3—甲酯进行了研究，通过研究首次发现，生成苄基噁唑的反应是正常的B-N反应的竞争性反应，并从机理上给予了解释，所得出的结论具有一定的规律性，在杂环的合成方面具有一定的应用价值。

Objective:To investigate the antitumor effect of vitamin E succinate combined with tamoxifen on the graft model of human breast cancer in nude mice and to analyze the possible mechanism.

目的：检测维生素E琥珀酸酯联合三苯氧胺对荷乳腺癌裸鼠的体内肿瘤的抑制作用，并探讨其可能的作用机制。

The preparation of a novel chiral sulfonamide alcohol derived from natural camphor and its application in the titanium tetraisopropoxide-promoted enantioselective addition of diethylzinc to benzaldehyde is described.

由天然樟脑合成了一个新手性磺酰胺醇，并对其在二乙基锌对苯甲醛的对映选择性加成中的催化性能进行了研究，获得了73%化学产率和

This is a new development of the synthesization.

本课题旨在制备丙烯酸树脂交联改性水性聚氨酯乳液，并在此基础上做出性能优异的双组分水性聚氨酯体系，我们还利用接枝共聚的方法制备出水性聚氨酯－苯丙乳液，这种合成工艺是聚氨酯改性的一个新发展。

Methods:the dispersible tablets was prepared by taking lose subsfrits hydroxypropyl cellulose and hydroxypropymethyl cellulose as excipient.the phenobarbital content in tablets was determined by uv spectrophotometry at 240 nm.results:the uniformity test of dispersion showed that the tablets could smoothly disperse and pass through a no.2 sieve within 1 min.

以低取代羟丙基纤维素、羟丙甲纤维素等为辅料研制该分散片，紫外分光光度法测定该片中苯巴比妥的含量，测定波长为240 nm。结果：分散均匀性试验表明该分散片在1 min内均匀分散并通过2号筛。

In this paper, we use DOAS method to measure the spectra of benzene and toluene sample and analyze the results.

文中用DOAS方法测量了苯和甲苯的样品，并分析了结果，结果和理论吻合。

The process flow and plane disposal ofheavy raw material MEK toluol unit and solvent recovery system have beenoptimized in this project to meet present production demand, moreover there still isspace left to be extended and developed for the future.

本项目优化重质酮苯脱油装置及溶剂回收系统的工艺流程和装置平面布置，使之满足目前生产，并留有今后扩建和发展余地。

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。