查询词典 cationic

The results of research showed that compound ferrous flocculant has simple preparation and not any second pollution matter is produced to the environment, it has big and stout floes formation and fast speed sedimentation while dealing with waste water, it is positively charged according to the electrophoresis, it belongs to cationic flocculant, can gives better coagulation results in turbidity removal, color removal, the maximum removal rate of turbidity and color are 95.4% and more than 81.7%, respectively. There are interactions between polysilicic acid and hydrolyzed ferrous species, the compound ferrous with appropriate Si/Fe not only but also can lower the water treatment cost. The compound ferrous removes colloid particles in water by charge oxidation-reduction, neutralization and furl mechanism.

研究结果表明：复合亚铁制备工艺简便，无二次污染；处理水样时产生的矾花大，密实、沉降速度快；复合亚铁带电性为正，为阳离子型絮凝剂；复合亚铁具有较好的除浊、脱色能力，除浊率及脱色率最高分别可达95.4％及81.7％；在复合亚铁中，聚硅酸与亚铁的水解产物间存在着相互作用，合适的硅铁摩尔比有利于提高混凝效果，而且还可以降低投药成本；复合亚铁是通过氧化还原、吸附电中和及卷扫三种作用机理起混凝作用的。

A corrosion inhibitor CH - 10 used in high temperature acid treatment was obtained by compounding this cationic Mannich base with propargyl alcohol.

针对Mannich碱型缓蚀剂存在的溶解性不好和缓蚀率不高等问题，以甲醛、环己酮和苯胺为原料，合成了一种Mannich碱型缓蚀剂CH-9，将其阳离子化后，再与丙炔醇复配，得到了阳离子型高温酸化缓蚀剂CH-10。

The research and development of levelling agent for vat dyes and cationic dyes was reviewed,which provide reference for the application, repreparation and development of levelling agent in China.

匀染剂具有缓染性和移染性，可有效改善染料的匀染性达到均匀染色的结果，从而提高染料的应用性能。

The surface activity and capability for emulsifying the paraffin and the glyceride of the sodium oleoyl sarcosine mixed with cationic polymer HAC or nonionic surfactant AEO-9 were researched.

通过滴体积法测量溶液的表面张力，研究油酰肌氨酸钠与阳离子聚合物HAC和非离子表面活性剂AEO-9的复配效果，并比较它们对石蜡和甘油酯的乳化效果。

A new type of flocculant named quaternary ammonium cationic sesbania gum was optimized from susbania gum series,and flocculation effects of QACSG and polyacrylamide for treating domestic wastewater were compared.

从田菁胶及其衍生物系列中优选出了一种新型高分子絮凝剂-季铵型阳离子田菁胶，并对QACSG和聚丙烯酰胺在处理生活污水中的絮凝效果作了系统比较。

Contrasted with the activity of the same reaction in oil-water double phased system, the hydrolyzing behavior of Camlicla Lipolytica Lipase in reversed micellar systems is much like that in oil-water double phased system. The stability and catalyzing activity are both enhanced and give rise to "superactivity". except in reverse micelles composed of cationic surfactant.

实验表明，脂肪酶CLL在反胶束体系中催化水解反应的行为与油-水双相体系中的行为大体相似，在阴离子和非离子型表面活性剂构建的反胶束中，酶的稳定性和催化活性都有所增加，呈现&超活性&。

Under the conditions of suitable pH, chondroitin sulfate was reacted with cationic surfactant, such as tetradecyl pyridinium bromide, tetradecyl dimethyl benzyl ammonium chloride, cetyl pyridinium chloride monohydrate and cetyl trimethyl ammonium bromide, to form stable association microparticles.

在适宜的pH条件下，硫酸软骨素可与溴代十四烷基吡啶等阳离子表面活性剂形成稳定的缔合物微粒。

Three cationic surfactants, N -dodecyl- N -(2-hydroxyethyl)- N , N -dimethylammonium bromide, N -tetradecyl- N -(2-hydroxyethyl)- N , N -dimethylammonium bromide and N -cetyl- N -(2-hydroxyethyl)- N , N - dimethylammonium bromide have been synthesized.

合成了 N -十二烷基- N -(2-羟乙基)- N ， N -二甲基溴化铵、 N -十四烷基- N -(2-羟乙基)- N ， N -二甲基溴化铵和 N -十六烷基- N -(2-羟乙基)- N ， N -二甲基溴化铵等3个季铵盐阳离子表面活性剂。

Using the cationic detergent benzyldimethyl -alkylammonium chloride instead of cytochrome C in spreading procedure, we have observed the binding site for EcoR Ⅰ on linear pBR322 DNA molecule in the presence of gluteraldehyde. The diameter of the bound EcoR Ⅰ molecules are 15nm which may be the tetrameric EcoR Ⅰ particles.

用低分子量阳离子去垢剂苯二甲基苄基氯化胺取代经典展层技术中的细胞色素C，汲取前人经验，建立了无蛋白展层技术，适用于蛋白质--DNA相互作用的电镜研究。

The results show that each cationic flocculant has optimal dosage range, generally from 50 mg/L to 80 mg/L. COD removal efficiency of the tested water can reach 78%or more, the transmittancy can reach 90%or more.

研究结果表明，各种阳离子絮凝剂量的最佳使用范围一般在50～80 mg/L，上清液COD去除率达到78%以上，透过率达到90%以上。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。