查询词典 cationic

Finally, the guideline for efficiently preparing core-shell structured capsule carrier was tentatively proposed.The cationic, neutral and anionic polysaccharides were separately acted as the liquid core of biomimetic capsule by mimicking the component and function of cell sap. It was found that the electrostatic repulsion interaction between the polysaccharide core and the enzyme enhanced the enzyme activity and stability.

首先，模仿细胞液的成分和功能选用三种具有不同电性的多糖(羧甲基纤维素钠、甲基纤维素和羧甲基壳聚糖钠)作为仿生微囊的液核，经比较可知，与酶分子具有静电排斥作用的多糖更有利于酶构象、活力的维持和酶稳定性的提高；然后，模仿细胞膜的结构和功能构建仿生微囊的壳膜。

The advantage of supercritical carbon dioxide used as an environmental medium in polymerization and reactions in supercritical carbon dioxide are described. It includes homogeneous free radical polymerizations, precipitation free radical polymerizations, dispersion free radical polymerizations, emulsion and inverse emulsion free radical polymerizations, cationic polymerizations, ring-opening polymerization, melt-phase condensation polymerizations, sol-gel polymerizations, polymer blend synthesis, catalytic chain transfer polymerizations, oxidative coupling polymerization, nitroxide-mediated radical dispersion, atom-transfer radical polymerization, reversible addition-fragmentation chain transfer polymerization, electrochemical polymerization, simultaneous one-pot combination of enzymatic and chemical polymerization, copolymerization of carbon dioxide used as monomer.

评述了ScCO2作为聚合反应介质的优点，以及在ScCO2中可进行的聚合反应类型，包括均相聚合、沉淀聚合、分散聚合、乳液及反相乳液聚合、阳离子聚合、开环聚合、熔融态缩聚、溶液-凝胶聚合、聚合物混合合成、链催化转移聚合、氧化-偶合反应聚合、氮氧自由基可控活性聚合、原子转移自由基聚合、可逆加成-断裂链转移、电化学聚合、原子转移聚合与酶催化开环聚合两种活性聚合在ScCO2中同时聚合、二氧化碳作为原料共聚合等。

The high cationic charge density of the nanosphere improves deposition of active ingredients onto skin.

纳米球的高阳离子密度增加了活性成分向皮肤上的沉积。

The adsorption characteristics of high charge density cationic polyamine on pulp fibers were studied in this paper.

摘 要：通过测量纸浆Zeta电位及聚合电解质的吸附量，研究了高电荷密度阳离子聚胺在纸浆纤维上的吸附特性，并将吸附聚胺后的纤维抄纸进行纸浆性能分析。

Formulation, process technology and properties of cationic chloroprene latex modified emulsified pitch paint for bridges are introduced.

介绍了氯丁胶乳改性阳离子乳化沥青的配方、工艺及其性能特点。

The diffusion coefficient of cationic dye inmontmorillonite film is about one order of magnitude larger than that of Nafion film.

阳离子染料在蒙脱石膜内的扩散系数比在Nafion膜中的扩散系数大一个数量级。

The dynamic and equilibrium surface tensions and conductivity of the dilute solutions of cationic polyacrylamide and SDS were measured with pendant drop tensiometer and conductometer, respectively.

通过测量阳离子型聚丙烯酰胺/十二烷基硫酸钠体系的动态表面张力、平衡表面张力及电导率，研究了聚丙烯酰胺的阳离子度的作用。

The dyeability of the non-formaldehyde durable press finished cotton fabric after cationic modification was improved significantly, especially with pigment dyeing.

对耐久压烫织物的可染性有较大提高，尤其对涂料染色效果改善明显。

The dyes selected as sorbate were three anionic dyes: amaranth , sunset yellow , fast green FCF and three cationic dyes: methylene blue , brilliant cresyl blue , neutral red .

研究所选的染料是三种阴离子染料：苋菜红、日落黄、固绿FCF和三种阳离子染料：亚甲蓝、亮甲酚蓝、中性红。

The relationship between aqueous two phase system and liquid crystal of cationic and anionic surfactants mixture was studied.

研究了正离子表面活性剂 CTAB与负离子表面活性剂 SDS混合系统的双水相与液晶结构的关系。

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。