表面活性剂

The surface activity of Hibiscus syriacus has been studied and shows thatHibiscus syriacus has good surface activity.The influence of temperature,saltness,water hardness and pH on the surface activity of its aqueous solutionsis also studied and shows little influnce.Also the mixture systems of Hibiscussyriacus with some anioic surfactants have been studied and the results show thatthe mixture systems can produce remarkable synergism.

天然表面活性植物木槿叶的应用研究本课题对天然植物原料木槿叶提取物中的表面活性物的性质(临界胶束浓度、表面张力和起泡性能)及其影响因素(温度、pH、水硬度和盐度等)进行了系统的研究，结果表明木槿叶表面活性物具有较好的表面活性，且它的cmc和〓在一定范围内受一些因素的影响也不大，是一种理想的香波原料；同时也研究了木槿叶活性物与其它温和型的阴离子表面活性剂的复配体系，表明具有明显的协同增效效果。

Hydrothermal treatment and pH value swing could shift the micropore distribution of alumina to macroporous direction, and decreased surface areas; the surfactants addition could shift the micropore distribution of alumina to microporous direction, and increase surface areas.

其中pH值交替变动和水热处理使氧化铝微孔分布向大孔方向迁移，比表面降低；加入表面活性剂使氧化铝微孔分布向小孔方向迁移，比表面增加，制备出了低比表面≤150平方公尺g^(-1和高比表面≥250平方公尺g^(-1的大孔容氧化铝载体。

So, Toxic surfactants should be avoid when surfactants were selected for use to clean/remediate contaminated soil.

在选择表面活性剂对有机污染土壤进行清洁修复时应选用不抑制微生物活性的表面活性剂。

Similar lamellar hybrids can be obtained from octa(y-chloroammoniumpropyl) polyhedral oligomeric silsesquioxanes dodecyl benzene sulfonic acid sodium salt C_(18H_(29)NaO_3S, DBSS. Further research shows that different POSS to surfactant ratios result in different arrangement of layers: when there exists excessive POSS, the layer is arranged in a "Alkyl-POSS-POSS-Alkyl" sequence; while on the contrary, the layer is in "Alkyl-POSS" sequence.

实验研究表明，通过调整POSS和表面活性剂的物质的量比例可以改变片层结构，发现当POSS成分大大过量的时候，片层重复单元按照&烷基-POSS-POSS-烷基&顺序排列，对应较大的层间距；当表面活性剂成分大大过量的时候，片层重复单元按照&烷基-POSS&顺序排列，对应较小的层间距。

Compared with nonionic surfactant, the effect of anionic surfactant on natural gas storage in hydrates is stronger.

阴离子表面活性剂十二烷基硫酸钠对水合物储气的促进作用比非离子表面活性剂烷基多糖苷强。

Many papers have been devoted to the interaction between small molecular hydrocarbon and fluorocarbon surfactants.

对于小分子的碳氢表面活性剂与氟碳表面活性剂的混合体系，已有较深入的研究。

The effect of ethylene oxide chain length in lauryl alcohol ethoxylate on the oily soil detergency of the nonionic／anionic／elec-trolyte mixed system was stuided and the results were explained by the view of phase inversion temperatureand oil／water interfacial ten-sion.

研究了在非离子表面活性剂／阴离子表面活性剂／电解质的混合体系中，直链脂肪醇乙氧基化物的 EO 数对体系洗涤力的影响效果，并用相转化温度和油／水界面张力的观点对实验结果进行了解释。

According to ASP system, sacrificial agent is used to pre-adsorb oil sand and then to measure the isothermal line of surfactant on oil sand. The result shows that the adsorption loss of surfactant is reduced by 40%-60%.

针对三元复合体系，应用牺牲剂对油砂预吸附后，测定表面活性剂在油砂上吸附等温线，结果可降低表面活性剂吸附损失40％～60％。

The use of the surfactants of the formula enable efficient emulsification and thus polymerisation at temperatures above those at which non-ionic unsaturated surfactants are effective.

使用式表面活性剂能够有效乳化并且因此能够在高于非离子不饱和表面活性剂有效时的温度下进行聚合。

The results showed that strain C-3 could grow well and produce the largest amount of biosurfacant under the following conditions: seed-oil as sole carbon source, 30°C, initial pH 8, Ca2+ concentration of 20 mg/L, 75 mL medium in 250 mL Erlenmeyer flask.

初步研究了其产生物表面活性剂的最适条件，在以植物油为碳源、30°C、初始pH 8、Ca2+浓度20 mg/L、250 mL三角瓶中装75 mL发酵液的条件下，最利于菌株的生长和生物表面活性剂产生。

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。