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二十烷

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Through the coupling of cyclen and homoserine deriva-tive, we have firstly synthesized a cyclen-functionalized ?α-amino acid,-2-amino-4[1 (1, 4, 7, 10 –tetraazacyclo-dodecane)] butanoic acid.

我们通过1,4,7,10-四氮杂十二烷与高丝氨酸衍生物反应,首先合成了一个非天然α-氨基酸:-2-氨基-4[1(1,4,7,10-四氮杂环十二烷)]丁酸。

Water,dimethicone,propylene glycol,glycerin,cyclomethicone,ppg-15 stearyl ether,sorbitan oleate,stearic acid,cetyl alcohol,glyceryl stearate,ethylhexyl methoxycinnamate,peg-100 stearate,panthenol,phenoxyethanol,phospholipids,triethanolamine,methylparaben,oenothera biennis oil,imidazolidinyl urea,carbomer,c12-13 alkyl lactate,glycyrrhetinic acid,citrus aurantium dulcisoil,propylparaben,tocopheryl acetate,benzophenone-3,triclosan,disodium edta,ethylparaben,pentadecalactone,iris germanica root extract,retinyl palmitate,bisabolol,butylparaben,sodium hyaluronate,aesculus hippocastanumseed extract,ruscus aculeatus root extract,chlorhexidine digluconate,biosaccharide gum-1,citrus aurantium amaraoil,tocopherol,lecithin,ascorbyl palmitate,glyceryl oleate,BHT,citric acid,limonene,linalool

水, 地美司康,丙二醇,甘油,环甲硅脂, PPG-15 硬脂基醚,油酸己六酯,硬脂酸,十六醇,甘油硬脂酸, 4-甲氧基肉桂酸-2-乙基己基酯,聚乙二醇硬脂酸酯,维生素B5,苯氧乙醇,磷脂质,三乙醇胺,羟苯甲酯,月见草油,尿素醛,卡波姆, c12-13烷醇乳酸酯,甘草亭酸,甜橙油,羟苯丙酯,醋酸盐维他命E,二苯酮-3,玉洁新,乙酸乙二胺二钠,羟苯乙酯,环十五内酯,鸢尾花根萃取,维他命A酯,没药醇,羟苯丁酯,透明质酸钠,欧洲七叶树籽萃取,假叶树根萃取,洗必泰葡萄糖酸盐,多醣物质,苦橙油,维生素E,卵燐脂,抗坏血酸棕榈酸酯,甘油油酸酯,二丁基羟基甲苯,柠檬酸,柠檬精油,芳樟醇水:几乎所有护肤品成分第一位都是水。地美司康:即silicon,矽灵,一般添加于霜剂中,使用后皮肤手感光滑。该成分不可吸收。

And the effect of water/dodecane ratio on the productivity was discussed.

对水/十二烷两相体系中十二烷的含量对还原活力倍数的影响进行了探讨。

Moreover, different viscoelasticity characteristics at different interfaces for PHPAM solution were also found. Among those three interfaces were experimented, and the order of the numerical value of viscoelasticity from large to small is PHPAM/air interface, PHPAM/dodecane interface and PHPAM/crude oil interface.

聚合物溶液与不同物质所形成的界面具有不同的粘弹性特征,与空气、正十二烷、原油所形成界面的界面扩张粘弹模量E的大小次序为E空气>E正十二烷>E原油,即E随着两相密度差的减小而减小。

The strain TV9704 does not use dodecane,hexadecane,liquid paraffin,diesel and naphthalene as carbon source and energy for its growth,therefore the oil consumption value was not obviously decreased;comparatively,thiophene or dibenzothiophenewas the only carbon source,sulfur source and en...

这一菌株不能以正十二烷、正十六烷、液体石蜡、萘和柴油为碳源和能源生长,因此不会明显地损失石油的燃烧值;但它能利用噻吩或二苯并噻吩作为唯一硫源来生长。

Bromododecane was synthesized from n-dodecyl alcohol using byproduct hydrobromic acid from 1-bromoadamantan process as raw material in the presence of the concentrated sulfuric acid.

以生产溴代金刚烷得到的副产品氢溴酸为原料,在浓硫酸存在的条件下与正十二醇进行反应合成1-溴代十二烷。

Silver nanoparticles with average particle size ranging from 2 to 131nm were manipulatively synthesized starting from silver nitrate using 10 kinds of different functional group-containing organic modifiers, such as polyvinylpyrrolidone, tween-80, sodium dodecyl sulfate, sodium polyacrylate, polyethylene glycol, D-sorbitol, sodium dodecyl sulfonate, sodium dodecylbenzene sulfonate, polyvinyl alcohol, cetyltrimethylammonium bromide, at room temperature.

摘 要:选择10种含有不同官能团的有机物为表面修饰剂,如聚乙烯吡咯烷酮、吐温-80、十二烷基硫酸钠、聚丙烯酸钠、聚乙二醇、山梨醇、十二烷基磺酸钠、聚乙烯醇、十二烷基苯磺酸钠和十六烷基三甲基溴化铵等,在室温下进行了平均粒径在2~131nm范围内纳米银颗粒的控制合成研究。

Our study show that 9, 11-Octadecadienoic acid, methyl ester is the highest content of organic acid ester components in non-hydrocarbon fraction, higher content of 6-Octadecenoic acid, methyl ester reflects mainly terristrial source input, higher content of pentadecane acid, 14-methyl, methyl ester or Heptadeeanoic acid, 16-methyl, methyl ester shows mainly aquatic source input.

原油和岩石抽提物非烃中有机酸酯类化合物的有机地球化学研究报道很少,系统研究发现非烃有机酸酯中9,11-十八二烯酸甲酯含量最高,而次高峰的丰度可用作生源判识,陆源母质输入多的样品次高峰为6-十八单烯酸甲酯,水生母质供给多者次高峰为14-甲基十五烷酸甲酯或16-甲基十七烷酸甲酯。

Fine chemicals to add auxiliary Series: lubricating oil pour point depressant, calcium zinc magnesium methacrylate, methyl acrylic acid lauryl ester, tetradecane methacrylate ester, methacrylic acid octadecyl ester, a acid ethylene glycol, diethylene glycol methacrylic acid ester, glycidyl methacrylate, the second reduction of three ethylene glycol dimethyl acrylate, acrylic acid lauryl ester, tetradecyl acrylate, octadecyl acrylate, acrylic acid ethylene glycol, diethylene glycol acrylate esters, glycidyl, two shrink three acrylate such as ethylene glycol.

精细化工添加助剂系列:润滑油降凝剂,甲基丙烯酸钙锌镁,甲基丙烯酸月桂酯,甲基丙烯酸十四烷酯,甲基丙烯酸十八烷基酯,甲基丙烯酸乙二醇,甲基丙烯酸二乙二醇酯,甲基丙烯酸缩水甘油酯,二缩三乙二醇二甲基丙烯酸酯,丙烯酸月桂酯,丙烯酸十四酯,丙烯酸十八酯,丙烯酸乙二醇,丙烯酸二乙二醇酯,丙烯酸缩水甘油酯,二缩三乙二醇丙烯酸酯等。

Third, volatilizable parts from Hainan Rauvolfia were obtained through water vapor distillation. They were analyzed by GC/MS. The resuts showed that about 10 compounds in the root essential oil were extracted and 9 of them were identified. Fatty acids and phenol ramification are the main types of the compounds.

用水蒸气蒸馏法获得了萝芙木中的易挥发组分,对其进行了GC/MS分析,分析结果表明,萝芙木根挥发油分离出10个峰,鉴定出9种化合物,其主要成分为9-十八烷酸、十六酸,棕榈酸、9,12-十八烷二酸、1H-酚[2,1-b] 喃-1-酮,分别占挥发油总量的25.66%、19.34%、18.12%、17.23%,四者占其总量的80.35%。

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I didn't watch TV last night, because it .

昨晚我没有看电视,因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来,在北京的很多小区里,电梯液晶电视被撤了下来。

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