查询词典 catechol

The novel reaction to create 6,7-dimethoxy-1-(3,4-dimethoxyphenyl)-4-hydroxy-naphthalene 83 in one-pot procedure was found during the synthesis of diphyllin, which started from catechol dimethylether and succinic anhydride and involved heating the molten mixture of the two reactants in the presence of polyphosphoric acid at 140℃.

这个反应是用邻苯二酚二甲醚和丁二酸酐为原料，把两个原料的混合物熔融后，加入PPA，在140℃下搅拌后就会有产物生成。

The infrared spectrums show that the phenolic tars on the waste catalyst contain the typical structure of C=O bond, and it comes from the further oxidation of catechol.

红外光谱分析表明，1620cm^(-1)，吸收峰的产生和强化进一步说明废催化剂上沉积的酚焦油含有典型的C=O结构。

The interactions between phenol,m-cresol or catechol with DNA sensor were analyzed, results indicated that the threephenols damaged DNA.The direct oxidation peaks of DNA were decreased linearly withthe phenols concemtrations.R%D_(50) values showed that the m-cresol damnified DNA mosteasily.

研究了苯酚、间甲酚和邻苯二酚与DNA的作用，结果表明其对DNA有损伤作用，且存在剂量效应关系，一定浓度范围内，DNA的峰电流与酚的浓度呈线性下降关系。R％D_(50)值分析结果表明这三种酚污染物中间甲酚最容易损伤DNA。

The electrochemical properties of the MWCNT/GCE were investigated with cyclic voltammetry. Electrocatalytic oxidations of phenol, catechol and hydroquinone at the sensitivity of the were also studied further.

并用伏安法分析了电极表面MWCNT在B-R缓冲溶液中的电化学行为，在此基础上着重研究了苯酚、邻苯二酚和对苯二酚在MWCNT/GCE上的电催化氧化。

A conventional three-electrode system is fabricated to study electrochemical and enzymatic reaction between tyrosinase in the gold nanoparticles and catechol in acetonitrile.

结果：基于构建的新型酶电极，对儿茶酚的催化响应显示了良好的线性关系，该酶电极最大响应电流密度为23.6μA／cm^2，米氏常数为4.28mmol／L。

Maternal plasma and umbilical cord vein concentration of LPO and the amount of RBC-SOD were measured by thiobarbituric acid fluorimetric determination and catechol self-oxidation determination respectively.

目的 探讨过氧化脂质和红细胞超氧化物歧化酶活性在妊娠肝内胆汁瘀积症病理生理变化中的作用。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。