表面活性剂

The toxicity of selected compounds and their binary mixtures of sodium dodecyl sulfate with three substituted aromatic compounds to photobacterium phosphoreum was investigated, respectively.

研究阴离子表面活性剂十二烷基硫酸钠和苯酚、硝基苯、甲苯3种取代芳烃对发光菌的单一毒性，以及在等浓度配比条件下，SDS与这3种取代芳烃二元混合体系的联合毒性效应，并采用毒性单位、相加指数、相似性参数和泥合毒性指数进行毒性评价。

The structural feature and physicochemical property of the new generation of surfactants［J］.

新型表面活性剂的结构特点与物化性能［J］。

Control of QR barnyardgrass was also studied in this paper. Butachlor, cyhalofop-butyl, oxyfluorfen, pretilachlor, mefenacet and oxyfluorfen plus quinclorac gave adequate control of QR barnyardgrass, however, butachlor in combination with quinclorac and quinclorac plus piperonyl butoxide or agrco were not effective for control of QS barnyardgrass.

本论文还对QR稗草的治理进行了研究，结果表明：丁草胺、千金、果尔、扫茀特、苯噻草胺单剂及果尔和二氯喹啉酸混用能有效的防治二氯喹啉酸抗性稗草，而丁草胺和二氯喹啉酸混用、二氯喹啉酸和增效醚及二氯喹啉酸和表面活性剂蜡混用不能有效的防治QR稗草。

Some homologs were synthesized from polyglycerols with different polymerization degree. The polyglycerol dodecyl ether had good capacity of reducing surface tension.

并利用自制的不同聚合度的甘油，合成了一系列同系物产品，该新型非离子表面活性剂具有良好的降低表面张力的能力。

In SDS-PAC system, the hydroxide groups bridging effect of the polymolecular hydroxide complex ion is the main mechanism of surfactant flocculation.

SDS-PAC体系中，多核羟基络离子在胶束之间的羟基架桥作用，是表面活性剂混凝沉淀的主要机理。

The paper shows the ideal synthetic condition for preparing the novel amphoteric surfactant of monoalkyl phosphate by long-chain fatty acid, diethanolamine and polyphosphoric acid .

本文研究了以脂肪酸、二乙醇胺、聚磷酸为原料合成一种新型的两性磷酸酯盐表面活性剂的方法。

Amphoteric surfactant ; monoalkyl phosphate ; polyphosphoric acid ; softness ; antistatic agent ; synthesis ; pro-perty

两性表面活性剂；磷酸单酯盐；聚磷酸；柔软性；抗静电性；合成；性能

The organic montmorillonite VC18-MMT was prepared by the exchanging inorganic cations with vinylbenzyldimethyloctadecylammionun chloride which could be co-polymerized with styrene.The predispersion of VC18-MMT was realized via sonicating the suspension of the montmorillonite particles in emulsifier solution,and then the styrene was added into the system and the in situ emulsion polymerization was carried out to prepare PS/VC18-MMT nanocomposites.

以可与苯乙烯发生共聚的阳离子表面活性剂乙烯苄基二甲基十八烷基氯化铵为插层处理剂改性蒙脱土（VC18-MMT），有机蒙脱土在超声波强剪切作用以及乳化剂作用下预分散在乳化剂溶液中，然后引入苯乙烯单体进行原位乳液聚合制备聚苯乙烯/蒙脱土纳米复合材料。

The activty of SOD in vesicle solution is then determined. But still no apparent superactivty is found due to the following reasons: 1. The lowered dielectric constant reduces not only the self-oxidation rate of pyrogallic, but also the activity of SOD; 2. There are no efficient enough interaction between vesicles and SOD.

在上述体系中进行的SOD的活性研究中，没有发现表观超活性，估计是两方面的原因：一是囊泡周围低的介电常数同样也降低了SOD酶的活性，二是由于表面活性剂浓度较小，仅为0.5％左右，使得囊泡体积分数较小，不能与SOD酶发生充分有效的结合。

Recently, Shelnutt and co-workers obtained discrete porphyrin nanosheets reprecipitated from their solutions;[3] Sathish and co-workers constructed hexagonal C60 nanosheets using a liquid–liquid interfacial precipitation method;[4] the groups of Yao[5] and Hu[6] prepared singlecrystalline nanosheets of polycyclic aromatics using a surfactant- assisted reprecipitation and a physical vapor transporting method, respectively; and Zhang and co-workers suggested that molecules with intramolecular charge-transfer dipole moments could be grown into quasi-2D nanostructures.

近年来，Shelnutt及其同事由他们的溶液再沉淀获得了离散的卟啉纳米片[3]； Sathish和他的同事用液－液界面沉淀法构建了六边形的C60纳米片[4]； Yao[5]和Hu[6]分别用表面活性剂辅助的再沉淀和物理气相输运法制备了多环芳烃的单晶纳米片；而Zhang和他的同事提出，具有分子内电荷转移偶极矩的分子可以生长成准二维的纳米结构[7]。

We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.

索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称；三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起，称之为挽歌体诗人或者史诗诗人，他们被称为诗人，似乎只是因为遵守格律写作，而非他们作品的模仿本质。

The relationship between communicative competence and grammar teaching should be that of the ends and the means.

交际能力和语法的关系应该是目标与途径的关系。