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The major components were Triphenylmethane, Phytol, n-Hexadecanoic acid, Phenol, 2,4,6-tris (1,1-dimethylethyl).And etc.

其主要成分是三苯基-甲烷、叶绿醇、正十六碳酸、2,4,6-三(1,1-二甲乙基)-等,这为进一步开发利蒌蒿提供了科学依据。

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The purified polysaccharides is determined by colourimetry with sulfuric acid phenol as colourimetric reagent.

测得多糖的含量为65。

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Catalytic synthesis of phenetole by ethylation of phenol with diethyl carbonate(DEC)in fixed bed reactor was investigated.

以碳酸二乙酯(DEC)为乙基试剂,与在气固相条件下催合成苯乙醚。

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The primary synthetic methods of 4-hydroxycoumarin was reviewed starting from phenol, 2-acetylsalicylic acid, methyl salicylate, and o-hydroxyacetophenone respectively.

概述了4-羟基香豆素的合成方法,重点介绍了乙酰水杨酸法,水杨酸甲酯法,邻羟基苯乙法。

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RESULTS Zhike syrup obviously prolonged the incubation period of coughing and increasel the bronchotracheal secretion of phenol red.

果止咳露使咳嗽潜伏期延长,使气红排泌量明显增加。

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The technique for preparing phenol formaldehyde resin from phenolated wood (PWF) and its characters were studied and analyzed.

本文研究了木材制备醛树脂的技术,并对其性能进行分析。

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The phenols were O-alkylated with 100% conversion and 100% selectivities using phenacyl bromide and benzyl bromide as alkylating reagents.

溴代苯乙和溴苄为烷基试剂,以高产率和100%的转率以及100%的选择性得到了的O-烷基产物。

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BMI resin systems modified by allyl methylphenol ether,allyl methylphenol, allyl methol phenol and diallyl bisphenol A, respectly have been studied.

对以烯丙基甲醚、烯丙基甲、烯丙基甲和二烯丙基双A改性BMI所得树脂体系进行了研究。

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Chloroxylenol , a halogenated phenol, is a germicide that is effective against gram negative and gram positive bacteria, fungi, and yeast.

Chloroxylenol ,一个卤代,是一种有效的杀菌剂是对革兰氏阴性菌和革兰氏阳性菌,真菌和酵母。

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It is based on the catalytic effect of phenols for the oxidation of gallocyanin by sodium bromate in sulfuric acid medium.

在硫酸介质中,利溴酸钠氧花青的反应,联顺序注射技术建立了顺序注射催动力学光度法测定废水中痕量的新方法。

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It was found that the removel of phenol, CN , and COD in 40-60 C range is as high as mesophile temperature.

嗜热菌在40~60℃内能有效地去除废水中、氰和COD,活性比嗜温菌大,污泥沉降性能好,剩余污泥少。

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In order to get polyaryloxyphosphazene, polyphosphazene's side chlorines are directly substituted by aryloxy of phenol using triethylamine as the bind acid agent.

然后以三乙胺为缚酸剂,使高聚氯磷腈直接与合物进行取代反应,合成了标题高聚物。

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Coking residuary water contains phenol and cyanogens, which contaminate water source badly. Therefore, the coking residuary water has to be dealt with and discharged.

、氰污水的来源很广,对水源污染严重,焦污水必须加以处理,合格后才能排放。

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A new camphol sandaliol was synthetized by selective alkylation of isocamphol and phenol with acidic catalyst, and following hydrogenated in the presence of Raney nickel.

本文异龙脑与在酸性催剂作下进行选择性烷基反应,再经催还原得到龙脑檀香产品。

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Research and development for fhe production of pyrocatechol and hydroquinone by reaction of phenol with hydrogen peroxide and percarboxylic acid as hydroxylating reagent are introduced.

着重介绍过氧氢和过氧羧酸作羟基剂,使羟基生成邻苯二和对苯二的研究开发进展。

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Compared with that of furane resin bonded sand,the feasibility of phenol resin bonded sand in forming a uniform coating layer in the inside mould surface is studied as well.

本文分析研究了砂在铸型中的成型条件及光洁内表面的形成机理,并对比研究了覆膜和呋喃自硬砂在铸型内表面形成均匀覆砂层的可行性。

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P - tert - octylphenol (shorten by PTOP), the alkylation product of phenol with diisobutylene(shorten by DIB), has been largely applying in varied fields such as rubbers, oil additives and so on.

对叔辛基(PTOP)作为二异丁烯(DIB)的下游产品,是一种途广泛、具有广阔的市场前景的精细工产品。

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科学60秒-科学美国人 2019年8月合集

And phenol is used in the manufacture of certain medicines.

酚类用于制造某些药物。”

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俞敏洪:用100句子记7000

Because of its irritating effect on humans, the use of phenol as a general antiseptic has been largely discontinued.

4。由于苯酚对人体带有刺激性作用,它基本上已不再当作常用的防腐剂了。

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TED-Ed(视频版)

In 1907 a chemist combined phenol— a waste product of coal tar— and formaldehyde, creating a hardy new polymer called bakelite.

1907 年, 一位化学家将苯酚(一油的废品)和甲醛结合在一起,创造出一名为电木的坚固新型聚合物。

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Osmosis-微生物

This can be tested by transferring a pure sample of bacteria from the culture to a sterile tube containing a mixture of " urea agar" broth and phenol red.

可以把细菌样本放置到一混合有尿素、琼脂、肉汤和红的无菌试管中进行检测。

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