酚类

The effects of the composition of catalyst (the structure and amount of bident ligand and strong acid, the cocatalytic activity of Cu〓, the roles of methanol and phenol etc.) and the copolymerization condition (the reaction time, temperature, amount of ST and CO, the structure and amount of solvent etc.) on catalytic activity were studied. The principle of the copolymerization was investigated.

研究了催化体系组成（含氮双齿配体的结构与用量、强酸的结构与用量、铜盐的助催化作用、甲醇和酚类化合物作用等）和共聚反应条件（共聚反应的温度与时间、溶剂种类与用量、苯乙烯与一氧化碳量等）对溶液共聚反应的催化活性的影响，探索溶液聚合反应规律。

In subsequent experiments, the antioxidant enzyme activities of superoxide dismustase, catalase and glutathione peroxidase in juvenile goldfish exposed to single compound and equitoxic binary mixtures of 2-chlorophenol and 2, 4-dichlorophenol were investigated. Finally, the relationship between lethal doses and effective concentrations in the experiments are discussed.

第二部分通过系统研究氯酚类化合物单一化合物和等毒性二元混合物暴露对鲤科金鱼幼鱼的急性联合毒性作用方式和肝脏组织内三种细胞抗氧化酶(SOD， CAT和GSH-Px)的活性变化，探讨了水生生物急性致死剂量与效应浓度之间在数值上可能存在的相关性。

It suggested that the senescence and browning was closely related to the metabolism of active oxygen and phenolics.

这表明果实衰老褐变与活性氧和酚类物质的代谢密切相关。

Buchu: This has long been used as an African herbal remedy for ailments of the gastrointestinal and urinary tracts, as it has diuretic and antiseptic properties due to various phenolic compounds.

布枯叶：这早已被用作了非洲的胃肠道和泌尿道疾病的草药，因为它有利尿和杀菌的特性，由于种种酚类化合物。

Phenol compound and formaldehyde ,etc., these materials have function of accelerating the canceration.

酚类化合物和甲醛等，这些物质具有加速癌变的作用。

Carbolic acid:Organic compound, simplest member of the class of phenol s.

石炭酸：最简单的酚类有机化合物。

The phenol s carboxylation is a typical organic chemical reaction, which was discovered years ago.

酚类的羧化反应是一个很早就发现的、典型的有机化学反应，称为Kolbe-Schmitt反应。

This paper mainly aims to investigate the 2,3-cresotic acid s composion by carboxylation and its pilot-plant test.

酚类的羧化反应早期常采用固相直接羧化法，70年代国外逐步改用溶剂悬浮羧化法。

Catechol estrogens, the oxidative metabolites of estrogen, have been reported to be associated with the development of breast cancer.

2-hydroxyestradiol 和 4-hydroxyestradiol是属於邻苯二酚类，为雌激素的主要代谢产物。

The article in recent years the research progress of disease of oral cavity of TP prevention and cure makes one overview. The compositive TP of the basic research 1.1 TP of 1 TP is the floorboard that phenolic apperception of a kind of many hydroxyl closes matter, 25% what hold tea dry weight about, its are main component includes to express gallnut of gallnut catechu element gallnut of element of catechu of gallnut of acerbity ester, watch, watch catechu element is acerbity element of catechu of ester, watch, express gallnut of gallnut catechu element among them acerbity ester content is highest, occupy the 80%[1] of catechu element about, fighting oxidation with its unique element structure, fight the position with fight the respect such as tumor to have choppy, significant. The 1.2 TP absorption in oral cavity and metabolization Lee [2] is measured normally inside a hour after healthy person is chewing green tea Xie Huo contains juice of gargle green tea, content of the TP in saliva is very high, after observing green tea passes salivary enzymatic hydrolyze, TP is slow release and in oral cavity;Yang of local play action [the salivary level after 3] checked 6 volunteers to drink tea, chroma of the TP in making clear the saliva after drinking tea as a result is serous TP pH indicator 2 times, and the salivary TP concentration that contains gargle tea solution a few minutes to be able to produce higher level, and TP can be absorbed through oral cavity mucous membrane.

本文就近年来TP防治口腔疾病的探究进展作一综述。1 TP的基础探究1.1 TP的组成TP是一类多羟基酚类化合物的总称，约占茶叶干重的25%，其主要成份包括表没食子儿茶素没食子酸酯、表没食子儿茶素、表儿茶素没食子酸酯、表儿茶素等，其中表没食子儿茶素没食子酸酯含量最高，约占儿茶素的80%[1]，并以其独特的分子结构在抗氧化、抗突变、抗肿瘤等方面占有重要的地位。1.2 TP在口腔中的吸收和代谢Lee等[2]测得正常健康人在咀嚼绿茶叶或含漱绿茶液后的一个小时内，唾液中TP含量很高，并观察到绿茶通过唾液酶水解后，TP缓慢释放并在口腔局部发挥功能；Yang等[3]检查了6位志愿者饮茶后的唾液水平，结果表明饮茶后唾液中TP浓度是血浆TP浓度的2倍，而含漱茶溶液几分钟即可产生更高水平的唾液TP浓度，且TP可通过口腔黏膜吸收。

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。