查询词典 surfactant

A isotherm of a monolayer at air-water interface for a quaternary ammonium salt type trimeric surfactant (shortly called 12-2-12-2-12) was investigated by the Langmuir balance technology. The surface tension at collapse pressure,γ, and the molecular limited area, A, were determined and compared with the surface tension of the surfactant solution at CMC concentration,γ.

利用Langmuir膜天平研究了季铵盐三聚表面活性剂12-2-12-2-12在空气－水界面单分子膜的表面压－分子面积等温线，得到它的崩溃压对应的表面张力γ(下标 collapse)和分子极限面积A。

In this study, the amino propyl trimethoxy silane was used for the surface modification of silica, and the modified silica was adsorbed to surface of clay/silica (SiO2 : Clay = 4:1 and 2:1) and the clay/silica was adsorbed by the surfactant. Also, we used Dimethyldistearylammonium chloride and Dodecyltriphenylphosphonium surfactant to modify clay/silica. Then we prepared the Epoxy/clay/silica nanocomposites and Epoxy/clay/silica/DOPO composites.

中文摘要本研究利用胺基矽氧烷改质二氧化矽，并将改质二氧化矽吸附於蒙脱土上(SiO2 ： Clay = 4：1与2：1)再分别以Dimethyldistearylammonium chloride 与Dodecyltriphenylphosphonium界面活性剂改质蒙脱土/二氧化矽并与环氧树脂制备成复材，并且再另外加入含磷阻燃剂 9，10-dihydro-9-oxa-10-phosphaphenanthrene 10-oxide与环氧树脂制备成复材。

In this study, nonionic surfactant sorbitan trioleate (Span 85) was modified with Cibacron Blue F-3GA to become an affinity surfactant (CB-Span 85) and to form affinity-based reversed micelles while dissolved in hexane. Since the CB molecule possesses a specific conformation that mimics nicotinamide adenine dinucleotide, it can bind strongly and specifically to a wide range of nucleotide-dependent enzymes such as dehydrogenases and kinases. Moreover, high protein transfer efficiency in the reverse micelles can be easily achieved by controlling the ionic strength of the aqueous phase.

本实验使用非离子型界面活性剂Span 85与蓝色染料分子Cibacron Blue F-3GA结合，形成具有亲和性的界面活性剂 CB-Span 85，由於CB染料分子具有与NAD+相似的结构，可与含核苷酸部位的蛋白质具有亲和力，将CB-Span 85溶於有机溶剂形成反微胞相，可有效的提高反微胞的选择率，可以只控制离子强度来调节蛋白质进出反微胞的效率。

The surfactant injection is, therefore, recommendable in the pre-waterflooded unfractured zones as long as the proper surfactant type is selected.

那表面活性剂注入是，因此，可推荐的在前 waterflooded 中不破碎地域只要那适当的表面活性剂类型是挑选的。

Synergisms of zwitterionic surfactant between the mixed surfactant system of SDS/ C12-C12 were investigated.

采用界面张力法考察了两性表面活性剂C12-C12在癸烷中与十二烷基硫酸钠的协同作用。

We have epitaxially grown ultrathin Pb and Co films on the Cu(111)surface bymolecular beam exitaxialgrowth technique,and studied in detail the growthand surface alloying of submonolayer Pb on Cu(111),the shift of Pb 5d core levelbinding energy on Cu(111),the surfactant-assisted epitaxial growth of Co on Cu(111)using Pb as a surfactant,and the spin exchange splitting of ultrathin Co films onCu(111)using synchron radiation photoemission spectra as well as Auger electronspectraand low energy electron diffraction.

利用分子束外延生长技术在单晶Cu(111)表面外延生长了超薄Pb和Co膜，并利用同步辐射光电子发射谱，结合俄歇谱和低能电子衍射，详细研究了超薄Pb在Cu(111)表面的生长、表面合金化，Cu(111)表面Pb的5d芯能级位移，以Pb作活性剂时Co膜的活化外延生长，以及超薄Co在Cu(111)表面的自旋交换劈裂，得到了一些有意义的结果。

In SDS-FeCl_3 and SDS-PAC systems, no special chemical complexation reaction exists between the dominant species of metal ions and SDS, so no redissolufion phenomenon can be observed at high flocculant concentrations in these two systems. Secondly, when calcium or magnesium salt, which is very ubiquitous in natural water body, is added into surfactant micellar solution, surfactant can not be flocculated in micellar form.

但在SDS-FeCl_3及SDS-PAC体系中，金属离子主要存在物种与SDS间无特殊的化学络合作用存在，故这两个体系中在高混凝剂浓度下也观察不到沉淀重新溶解的现象。2向表面活性剂胶束溶液中加入天然水体中常见的钙盐或镁盐，表面活性剂不能以胶束形式被沉淀。

Results suggest that, firstly, when inorganic flocculant Al_2(SO_4_3, FeCl_3 or PAC is added into surfactant micellar solution, surfactant is flocculated in micellar form.

结果表明，1向表面活性剂胶束溶液中加入无机混凝剂Al_2(SO_4_3、FeCl_3或PAC，表面活性剂以胶束形态被混凝沉淀。

The surfactant contains quaternary ammonium group; b, the surfactant is a complex macromolecule which takes the yellow humic acid as the main body , has no fixed compounds and can be degraded in nature.

含有季铵盐基团；b。以黄腐植酸为主体，是一种复杂的有机大分子，没有固定的组成，在自然界中就可以分解。

Comparison of Insecticidal Activities between Cyfluthrin and Its Preparation of Sample ( beta-cyfluthrin ) by Epimerization for the Army Worm;2. Toxicity and Field Effect of Different Ratios of Rotenone to Beta-cyfluthrin against Uroleucon gobonis;3. The relationship of the content of mixed surfactant , the content of co-surfactant and the maxium addition content of beta-cyfluthrin in the formation of beta-cyfluthrin microemulsion were studied, and a math theory model was established by using multivatiable linear regression analysis.

通过研究高效氟氯氰菊酯微乳剂形成过程中表面活性剂混剂、助表面活性剂与高效氟氯氰菊酯最大加入量的关系，利用多元回归处理方法，建立了表面活性剂混剂、助表面活性剂与高效氟氯氰菊酯最大加入量三者之间的数学模型；通过测定不同温度下高效氟氯氰菊酯的最大加入量，得出高效氟氯氰菊酯最大加入量随温度升高而增大的规律。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。