查询词典 octadecyl

In the case of n-propyl alcohol addition, the molar percent of unsaturated eicosly acids increased, unsaturated octadecyl acids reduced.

在添加正丙醇后，膜脂中不饱和二十酸的摩尔百分含量增加，不饱和十八酸的摩尔百分含量下降。

By use of octadecyl (C18) column made in China, a RP-HPLC method was studied using phenylisothiocyanate as the pre-column derivatizing reagent for the determination of amino acids.

采用国产C18反相柱，对以异硫氰酸苯酯为柱前衍生化试剂的高效液相色谱测定氨基酸的方法进行了研究。

In this thesis,MWNTs were modified firstly using concentrated acid of H_2SO_4 and HNO_3,and then octadecyl isocyanate was grafted onto the surface of the MWNTs to improve the dispersion and the interaction between the filler and the matrix.

第一步，用浓硫酸和浓硝酸的混合液对MWNTs进行酸化处理，第二步，用廉价的十八烷基异氰酸酯对酸化过的MWNTs进行烷基化处理。

The production was further verified with IR.The experiment results showed that the optimum reaction condition were as follow:the molar ratio of acrylic acid to octadecyl alcohol was 1.2∶1,the amounts...

由实验得出的最佳合成条件是：丙烯酸与十八醇的摩尔比为1.2∶1，固体超强酸及对苯二酚的质量分数分别为6%，0.8%，反应温度为120℃，反应时间为3 h，在此反应条件下，酯的产率可达97%。

Finally the application of the homemade ODS for MSPD and the economical availability of the product was evaluated. Results show as the following: 1. It is a simple method for the preparation of a bonded octadecyl phase which has large particle and high extent of coverage of the bonded phase.

研究结果表明：①采用大粒径无定形硅胶为基质，选择十八烷基三氯硅烷为硅烷化试剂，完整地合成了一种大颗粒、高表面积的ODS键合相，合成的ODS可作为基质固相分散MSPD的固相分散剂，用于样品的前处理。

Methods used in other high-performance liquid chromatography for determination of active ingredients, octadecyl silane for the bonded silica filler; methanol - water (55:45) as mobile phase, detection at 254nm.

采用高效液相色谱法对方中有效成分进行含量测定，用十八烷基硅烷键合硅胶为填充剂；甲醇-水(55：45)为流动相，检测波长为254nm。

Combined with purifying using Spe-ed solid phase extraction Cartridges Octadecyl C18/18% and determining by reversed-phase high performance liquid chromatography, extraction effects by four kinds of extraction methods were studied.

结合固相萃取柱净化－HPLC测定技术比较了4种提取方法对土壤样品中吡虫啉的提取效果。

Ingredients:Rose extract,cetearyl alcohol, dimethyl silicone oil, glycerol, octadecyl trimethyl ammonium chloride.

成分：玫瑰提取液，十六十八混合醇，二甲基硅油，甘油，十八烷基三甲基氯化铵。

The test result showed that the pour point of Jianghan crude oil might depress from 28 ℃ to 13 ℃ when styrene∶maleic anhydride∶octadecyl acrylater was 1∶3∶3, preheated temperature of the crude oil was 60 ℃, and addition of the terpolymer was 300 mg/L.

研究表明，当苯乙烯、马来酸酐、丙烯酸十八烷基酯三种单体摩尔比为1∶3∶3，原油预热温度为60 ℃，三元共聚物在江汉原油中加量为300 mg/L时，此三元共聚物可使江汉原油的凝固点从28 ℃降到13 ℃。

Ingredients:olive extract,cetearyl alcohol, dimethyl silicone oil, glycerol, octadecyl trimethyl ammonium chloride.

成分：橄榄提取液，十六十八混合醇，二甲基硅油，甘油，十八烷基三甲基氯化铵。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了