烷类

This paper contains three parts: 1 Synthesis of novel titanium complexes; 2 Polymerization behaviors of alkoxyl substituted Cp Titanocenes as catalysts for styrene syndiotactic polymerization; 3 Polymerization behaviors of alkenyl substituted Cp Lanthanocenes as Methyl Methacrylate polymerization catalysts.

中文题名新型茂钛、噁唑啉钛络合物的合成、表征以及茂钛、茂稀土络合物催化性能的研究副题名外文题名 Synthesis，characterization of novel Cp，oxazoline titanium complexes and polymerization behaviors of titanocenes and lanthanocenes 论文作者张浩导师钱延龙黄吉玲学科专业应用化学研究领域\研究方向金属有机与均相催化学位级别博士学位授予单位华东理工大学学位授予日期2003 论文页码总数148页关键词金属有机化学稀土络合物噁唑啉类钛络合物茂钛络合物馆藏号BSLW /2003 /O627 /27 本论文包括三部分内容：1）有机金属钛络合物的合成；2）烷氧基取代茂钛络合物催化苯乙烯间规聚合的研究；3）烯基取代茂稀土络合物催化甲基丙烯酸甲酯聚合的研究。

Inhibitor HZ 1 was synthesized by the reaction of amine and alkylogen.

通过采用胺类和卤代烷反应，合成出在盐水及泥浆介质中具有较好缓蚀效果的缓蚀剂 HZ- 1 。

The geometry structures have been optimized by semiempirical method AMI, on the base of this, the electronic properties and energy band structure of typical polymers were performed by EHMACC. The influence of photo-electricity on PPV-like electroluminescent polymers substituted by alkyloxy and cyano were discussed.

采用半经验AM1方法优化体系的几何结构，在此基础上，对典型的聚合物采用EHMACC程序计算能带结构，讨论烷氧基和氰基取代对PPV类电致发光聚合物光、电性质的影响。

Furthermore a primary qualitative analysis of the flavonoids anddiarylheptanoids of Alpinia officinarum has been undertaken using UPLC-MS.

此外，我们还运用新技术UPLC-MS对高良姜中双苯庚烷和黄酮两类成分进行了初步的定性分析。

In model plant Arabidopsis thaliana, also from Brassicaceae, the TRANSPARENT TESTA 12 (TT12, AtTT12) gene is seed coat-specific and encodes a vacuolar flavonoid/H+ antiporter, transporting cytoplasm-synthesized glycosylated flavan-3-ols to the vacuoles for further polymerization into seed coat pigments.

同属十字花科的模式植物拟南芥中，种皮特异表达的TT12（透明种皮12，AtTT12）基因编码一种液泡型类黄酮/H+-逆向转运蛋白，将胞浆内合成的糖苷化的黄烷-3-醇转运到液泡中，供进一步聚合形成种皮色素。

The results showed that the copolysiloxanes behaved liquid crystal phase in a certain range of cholesteryl content.

结果表明：这类共聚硅氧烷在一定的胆甾基含量范围呈现液晶相，由于长链烷酯基的引入，液晶相转变温度降低。

Flavonoids, derivatives of chromone or chromane, are built upon a C6-C3-C6 flavone skeleton in which the three-carbon bridge between the phenyl groups is commonly cyclized with oxygen. There are diverse group of plants containing flavone, isoflavone, flavonol, chalcone, ect.

黄酮类化合物系色原烷或色原酮的衍生物，其基本骨架具有C_6—C_3—C_6的特点，即指两个苯环通过中央三碳链相互连接而成的一系列化合物。

The main products are lndustrial Crotonaldehyde,Mixture of Organosilicon Monomer,Industial Sodium Polyacrylate and acrylate bond.

目前，主要产品有松江牌丁烯醛、有机硅混合单体、甲基氯硅烷等系列产品、工业聚丙烯酸钠、丙烯酸酯类粘合剂等系列产品。

Hydrocarbons were the major lipid class extracted by hexane or chloroform from the cuticular surface of overwintering gall fly larvae.

碳氢化合物主要油脂类提取正己烷氯仿或从表面角质层越冬虫瘿苍蝇幼虫。

Two oleanane type triterpenes were isolated from the crude drug Lu Lu Tong , the fruits of Liquidambar formosana and their structures were elucidated as 2α,3β dihydroxy 23 norolean 4(24), 12(13) dien 28 oic acid(1), 2α,3β,23 trihydroxyolean 12(13) en 28 oic acid(2), based on 13 C NMR, DEPT, 1H NMR, 1H 1H COSY, 13 C 1H COSY, IR, MS and elemental analysis.

从生药路路通分离得到2个齐墩果烷骨架的五环三萜类化合物。通过13CNMR，DEPT，1HNMR，2D1H－13CCOSY，2D1H－1HCOSY，IR，MS和元素分析阐明了它们的结构。（1）为2α，3β－二羟基－23－去甲－齐墩果－4（24），12（13）－二烯－28－羧酸，（2）为2α，3β，23－三羟基齐墩果－12（13）－烯－28－羧酸，（1）未见文献报道，（2）是首次从这一植物中分离得

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。