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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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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(1,1-二甲基)-苯酚等,这为进一步开发利用蒌蒿提供科学依据。

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

以碳酸二酯(DEC)为基化试剂,与苯酚在气固相条件下催化合成苯醚。

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

本文研究用酚化木材制备酚醛树脂的技术,并对其性能进行分析。

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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4-羟基香豆素的合成方法,重点苯酚法,杨酸法,杨酸甲酯法,邻羟基苯法。

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

结果止咳露使咳嗽潜伏期延长,使气管酚红排泌量明显增加。

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

用溴代苯和溴苄为烷基化试剂,以高产率和100%的转化率以及100%的选择性得到的O-烷基化产物。

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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.

对以烯丙基甲酚醚、烯丙基甲酚、烯丙基甲酚和二烯丙基双酚A改性BMI所得树脂体系进行研究。

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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 ,一个卤代酚,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.

在硫酸质中,利用催化溴酸钠氧化花青的反应,联用顺序注射技术建立顺序注射催化动力学光度法测定废中痕量酚的新方法。

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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.

然后以三胺为缚酸剂,使高聚氯化磷腈直接与酚类化合物进行取代反应,合成标题高聚物。

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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℃内能有效地去除废中酚、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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Coking residuary water contains phenol and cyanogens, which contaminate water source badly. Therefore, the coking residuary water has to be dealt with and discharged.

焦化含酚、氰污的来源很广,对源污染严重,焦化污必须加以处理,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.

本文用异龙脑与苯酚在酸性催化剂作用下进行选择性烷基化反应,再经催化氢化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.

着重用过氧化氢和过氧化羧酸作羟基化剂,使苯酚羟基化生成邻苯二酚和对苯二酚的研究开发进展。

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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.

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

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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.

则被用于制造某些药物。”

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俞敏洪:用100个句子记完7000个单词

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,它基不再被当作常用的防腐剂了。

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医学百科 The Medicine Book (Big Ideas Simply Explained)

1865. Joseph Lister uses carbolic acid, phenol, to cleanse wounds, and later reports his successful results in The Lancet.

1865年,约瑟夫·利斯特使用石炭酸(苯酚)来清洁伤口,并在后来于《柳叶刀》杂志报告了他的成功结果。

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经济学人 Science and technology

This is tedious messy and generates phenol rich waste that is toxic to plants and animals.

这很繁琐,产生富含化合物的有毒废物,对动植物都有害。

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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(一种煤焦油的废品)和甲醛结合在一起,创造出一种名为电木的坚固新型聚合物。

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Boost Your Biology with Lucas Aoun

I'm not, and then, then a couple of days a week, I'll take a methylene blue or a paracetam, phenol, phenol, paracetam.

我不常服用,但每周有吃些亚甲蓝或对乙酰氨基酚。

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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.

可以把细菌样放置到一个混合有尿素、琼脂、肉汤和红的无菌试管中进行检测。

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经济学人 Science and technology

Plant-based ones result in branched-chain fatty acids, and phenols and indols, which have a range of bad effects, including being risk factors for bad cardiovascular health.

以植物为基础的物质产生支链脂肪酸、和吲哚化合物,这些物质具有一系列不良影响, 包括成为心血管健康风险因素。

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经济学人 Science and technology

This liberates the phenols and draws them out by osmosis For the osmotic process to be effective though the bathing liquid needs to be changed frequently.

释放出化合物,并通过渗透将其带出。不过,为了使渗透过程有效,需要频繁更换浸泡液。

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经济学人 Science and technology

The fruit of the olive tree are loaded with compounds called phenols that make them unpalatable to people If an olive is destined to be crushed for its oil.

橄榄树的果实富含一种叫做化合物的物质,这使得它们的味道对人来说很难接受。如果一颗橄榄的命运是被压榨出油。

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经济学人 Science and technology

The phenols do not matter Most will be retained in the pulp left over after pressing Table olives, though must be purged of their phenols before being eaten At the moment.

化合物并不重要, 大多数在榨取后剩下的果肉中保留下来。不过,餐桌橄榄在食用前必须去除其中的酚化合物。 目前是这样的。

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