查询词典 surfactants

The effects of such parameters as temperature, pH, feeding rate,concentration, [NH_3]_T/_T molar ratio, surfactants and agitation, on the morphology and size of the particles, were studied and conclusions obtained are as follows:(1) The morphology and size of the particles are mainly decided by the species of nickel oxalates present.(2) Speeding up dissolution-recrystallization process benefits the preparation of the particles of being composed of a single species with uniform morphology and high aspect ratio.(3) The variations of nucleation and growth supersaturation under different conditions have definite effects on the morphology and size of the particles.(4) Adding PVP25 at a proper amount is beneficial to the preparation of fibrous nickel oxalate particles with high aspect ratio. 3 The formation mechanism as well as the morphology and size control of fibrous cobalt oxalate particlesThe cobalt oxalate particles with fibre morphology were prepared using CoCl_2 solution and mixed(NH_4)_2C_2O_4, NH_3·H_2O solution by a double jet process.

研究了温度、pH值、加料速度、浓度、[NH_3]_T/_T摩尔比、表面活性剂及其添加量、搅拌等对颗粒形貌与粒度的影响，主要结论为：(1)草酸镍化合物种类是决定颗粒形貌与粒度的最主要因素；(2)提高陈化中溶解—再结晶速度，有利于得到物相单一，形貌规整，轴向比大的粉末；(3)不同条件下，颗粒形核与生长过饱和度改变，也会对粉末形貌与粒度产生一定影响；(4)适量添加PVP25有利于大轴向比纤维状草酸镍的制备。3纤维状草酸钴的形成机理及其形貌与粒度控制采用CoCl_2溶液与(NH_4)_2C_2O_4和NH_3·H_2O混合溶液并流加料合成的方法，研究了纤维状草酸钴的制备。

The results showed that both the intermediate and the target product were novel and excellent nonionic surfactants.

结果表明，中间体和目标产物均为性能优良的新型非离子表面活性剂。

Nowadays the research on ecological environment of nonionic surfactants hasbecome a focus at home and abroad.

目前，非离子表面活性剂对生态环境的影响已成为国内外学者研究的热点。

NMR is effective particularly in the determination of structure of nonionic surfactants, e.g.

NMR擅长测定非离子表面活性剂的结构，例如EO平均加合数。

Sugar esters are nonionic surfactants. Because of their amphiphilic nature, they are widely used in pharmaceutical, food and cosmetic industries.

糖酯作为一种非离子型表面活性剂，由于特殊的两亲结构，已广泛应用于医药、食品及化妆品工业。

Surfactants have a big effect on the pigment concentration and yield value, and indirectly affect the viscosity of ink.

表面活性剂等助剂的加入通过对颜料体积浓度和油墨屈服值的影响，间接影响油墨粘度。

The dyeing kinetics of vegetable dye extracted from curcuma to wet blue leather which pre-treated by rare earth and surfactants was investigated.

研究了蓝湿皮通过稀土媒染后及表面活性剂存在下，对天然染料姜黄素的染色功力学。

The mechanism of the self-stability of polymer particles during the polymerization in the absence of surfactants was studied.

丙烯酸是一种活性很高的单体，由于其功能基团的存在，无法进行离子聚合，仅能用自由基方法聚合。

We demonstrate a simple electrochemical method to synthesize red-colored colloidal gold aqueous suspension by using a two-electrode electrochemical system. This nanosynthetic system employs only cationic surfactants as the colloidal stabilizers and a small amount of acetone.

此项实验内容是以电解电镀的方式合成红色的奈米金悬浮溶液，除了亲自动手完成奈米材料的合成之外，实验过程亦可增加学生对於奈米科技更深一层的认识，同时可以利用讲解国二下第七章色光与颜色及增加学生对於胶体溶液的认识。

Aerobic thermophilic bacteria were capable of oxidizing oil with formation of biomass, the products of partial oxidation of oil, and surfactants.

产甲烷菌在油氧化菌液体培养基中产生CH4， CO2为好氧微生物和厌氧微生物的共同代谢产物。

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。