表面活性剂的

The present paper dealswith the preparation of surfactant (deoxycholic sodium and tetrabutylammonium bromidemixture) coat bonded to silica gelwith alkyls aswell as its application to the separation of chiral enantiomers.

提要： 研究脱氧胆酸钠和溴化四丁铵的混合态表面活性剂涂层烷基键合硅胶固定相的制备和它在手性对映体分离中的应用。

The experiment was designed as a 5×5 Latin square with five Chinese Merino male sheep with rumen and duodenal cannulae to examine the effects of supplementation Tween 80 and Tween 20 on ruminal fermentation and nutrient digestibility. In the experiment, the animals were given a basal diet consisting of compound feed and corn straw.

选取装置永久性瘤胃瘘管和十二指肠瘘管的中国美利奴绵羊，采用5×5拉丁方试验设计，在饲喂玉米秸秆绵羊日粮中分别添加5，10g/d Tween 20或3， 6g/d Tween 80，以空白为对照，以研究不同水平的非离子表面活性剂Tween 20和Tween 80对绵羊瘤胃消化代谢的影响。

The principle of capillary tube viscometer was analyzed and the measuring apparatus was built to measure the viscosity of the Mn-Zn ferrite magnetic fluid. The effects of the volume fraction of the suspended magnetic particles, mass concentration of surfactants, temperature and the external magnetic field strength as well as the orientation on the viscosity of the magnetic fluid were analyzed.

分析了毛细管粘度计测量粘度的原理，搭建了磁流体粘度测量实验台，测量了锰锌铁氧体磁流体的粘度，分析了不同磁性粒子体积份额、表面活性剂质量含量、温度以及外加磁场方向和强度等因素对磁流体粘度的影响。

Besides, the difference of washing effect between BS-UC and MELs was explained theoretically through comparing their ternary phase diagrams.

此外，通过表面活性剂BS-UC和MEL的三元相图的比较，对两者在去除土壤油类污染能力的差别进行了理论阐述。

Comparing the enhancement between adding BS-UC and MELs, the former was more suitable than the latter. With adding BS-UC, the degradation rate of alkane reached above 90% when HRT kept 5h.

在该反应器中，比较了加入两种生物表面活性剂MEL和BS-UC的促进效果，认为BS-UC的实际应用效果更好，在水力停留时间5h时，烃类的降解率即可达到90％以上。

According the known structure of MELs and the composition of broth, the separate and purify process of MELs was studied with silica-gel chromatography and the optimum conditions were: silica gel particle size 200 mesh, washing solution chloroform-acetone mixture (7: 3 for MEL-A, 6: 4 for MEL-B), washing rate 0.25ml/min, washing amount 400ml solvent/g MEL.

1根据已知生物表面活性剂MEL的结构特点和发酵液组成，在提取得到MEL粗制品的基础上，采用硅胶色谱分离技术，确定了MEL的最佳分离纯化条件：硅胶粒径200目，洗脱剂采用氯仿-丙酮混合溶剂，洗脱剂配比为7∶3、6∶4，洗脱速率为0.25ml/min，洗脱剂用量为400ml/gMEL。

The induction time of methane hydrate formation was reduced, gas hydrate could grow rapidly, and the methane consumption was improved during hydrate formation in a quiescent cell with micella surfactants.

发现微量的表面活性剂降低了甲烷气体水合物在静止反应器中形成的诱导时间，并使水合物快速形成和生长，提高了水合物形成过程中的填充密度。

It has become emergent to exploit new surfactants, which suit for constituting reverse micelles applied to enzymatic catalysis.

开发新型的表面活性剂，以构建适用于酶催化反应的反胶束体系，已经成为一个亟待解决的问题。

The final products of non-ionic Gemini surfactant can be synthesized by O-alkylating the intermediates with the ethylene oxide.

结果验明，所合成的表面活性剂中间体的结构与设计的结构基本吻合。

Five surfactants were non-ionic, two cationic, four anionic, and one was a mixture of anionic and non-ionic.

五个表面活性剂是非离子的，二 cationic ，四 anionic，和一是一个 anionic 的混合和非离子的。

But we don't care about Battlegrounds.

但我们并不在乎沙场中的显露。

Ah! don't mention it, the butcher's shop is a horror.

啊！不用提了。提到肉，真是糟透了。