查询词典 catalyzed

Synthesis of dimethyl fumarateby esterification of fumaric acid with methanol catalyzed by solid su- peracid SO_4~(2-)/TiO_2was proposed in this paper.

以SO_4~(2-)/TiO_2固体超强酸为催化剂催化富马酸与甲醇合成富马酸二甲酯，探讨了催化剂制备条件、原料配比、反应时间、催化剂用量等因素对富马酸二甲酯收率的影响。

Based on trichlorfon-catalyzed reaction of benzidine- sodium perborate by single sweep oscillopolarography, a new method is proposed for the determination of trichlorfon.

用单扫描极谱方法研究发现敌百虫催化联苯胺过硼酸钠体系产生一灵敏的还原峰，其峰电位为-0.7V，峰电流与敌百虫的浓度在8×10-7～1×10-4mol/L范围内呈良好的线性关系(r=09991)，据此提出了一种检测敌百虫的新方法。

In diluted H2SO4 and heating at 85℃, the discoloration reaction of xylene cyanol FF oxidized by potassium periodate can be greatly catalyzed by ruthenium. According to this phenomenon, a new method for catalytic kinetic spectrophotometric determination of ruthenium has been developed.

在稀H2SO4介质中及85℃的加热条件下，Ru对高碘酸钾氧化二甲苯蓝FF褪色反应具有显著的催化作用，据此建立了催化动力学光度法测定痕量钌的新方法。

Take the Yangzi petrification factory dicarboxylic acid waste water as the research object, attempts and auxiliary carries on processing using the catalyzed oxidation by the ultrasonic wave to it, the inspection oxidant throws the increment, the time, the dicarboxylic acid density, whether there is as well as to its processing effect influence.

请帮忙翻译下此摘要成英文啊！以扬子石化厂对苯二甲酸废水为研究对象，尝试利用催化氧化并辅以超声波对其进行处理，考察氧化剂投加量、曝气时间、对苯二甲酸浓度、以及有无曝气对其处理效果的影响。

The method is based on the inhibitory effect of citric acid on the oxidation of phenol red peroxide catalyzed by Fe in hydrochloric acid solution.

在稀硝酸介质中，柠檬酸能阻抑铁催化过氧化氢氧化酚红的褪色反应，据此建立了阻抑动力学光度法测定柠檬酸的新方法。

Part 1 : 4-(Biphenylyl-4-oxy)aniline was synthesized by the nucleophilic chloro-displacement of 4-chloronitrobenzene with the potassium phenolate of 4-phenylphenol, followed by palladium-catalyzed hydrazine reduction.

摘要 第ㄧ部份： 4-Chloronitrobenzene 与 4-phenylphenol进行芳香亲核置换反应，再用钯催化联胺还原法合成出 4-(Biphenylyl-4-oxy)aniline。

Therelationship of the amount of catalyst and the ee% of product was seen to be negative nonlin-ear. Catalyst 3 was used in the enantioselective addition of diethylzinc to aromatic aldehydesand gave good results. The configuration of products was determined by the configuration ofthe catalysts' chiral carbon linked with hydroxy group. Using β- amino alcohols bearing only one chiral center as catalysts for the enantiose-lective addition were studied. D-N, N-dialkyl-2-amino butanol gave poor catalytic effect be-cause of their structure. The configuration of the product is the same as the catalyst. Anotherkind of β- amino alcohols - phenylglycine derivatives and valine derivatives have chiralcenter on the carbon linked with amino group. Catalyzed by-phenylglycine derivatives 6,7, 9, 10, the reactions gave satisfied results. The optical yields exceeded 80%.

在探讨了含有两个手性中心的β-氨基醇之后，选择了只有一个手性中心的β-氨基醇，一是手性中心为连羟基的手性碳原子：D-N，N-二烷基-2-氨基丁醇；二是手性中心为连氨基的手性碳原子：D-苯基甘氨酸衍生物和L-缬氨酸衍生物。D-2-氨基丁醇的催化效果不太好，这与其结构的空间位阻较小有关系，反应产物与连羟基手性碳构型一致；由苯基甘氨酸和缬氨酸出发合成五种β-氨基醇6-10，研究了不同ee％的-6作用下的二乙基锌-苯甲醛加成反应，发现该催化剂具有不对称放大效应；-7，9，lO的催化效果也比较令人满意，光学产率80％以上，所得产物构型与催化剂构型一致。

This paper also discovered that the phosphoryl transfer reactions of Nphosphoamino acids were catalyzed by imidazole with factors of 10-38, and the catalytic reaction rates could be influenced by the concentration of imidazole, structure of amino acids and alcohol.

磷酰化氨基酸的分子内N→O磷酰基转移反应具有很强的立体效应，丝氨酸与高丝氨酸，苏氨酸与来苏氨酸的反应活性分别相差6倍和1倍左右。

It catalyzed physical expansion.

它加速了城市的扩张。

Acetylcholinesterase in the nervous system of insects is one of the most important enzymes, in the central and peripheral nervous system and the acetylcholine receptor involved nerve-nerve and nerve-muscle synaptic transmission between the action potential, and its main function is catalyzed hydrolysis cationic neurotransmitter acetylcholine. At present, in the natural products active material, the AChE ester moves the spot inhibitor physostigmine was studied clearly.

乙酰胆碱酯酶(Acetylcholinesterase，AChE)是昆虫神经系统中最重要的酶系之一，在中枢及外周神经系统中与乙酰胆碱受体一起参与完成神经-神经及神经-肌肉突触之间动作电位的传递，其主要生理功能是催化水解阳离子性神经递质乙酰胆碱。

Consumer preference ; fuzzy partial ordering relation ; condorect function

消费者偏好；模糊偏序关系； condorect函数

And she doesn't have a cat, she has a Mexican hairless.

而且她不养猫，她养了一只墨西哥无毛犬。