查询词典 cationic

Using N, N-dimethyl-ethylenediamine as cationic substitute and 2-hydroxyethyl methacrylate or allylamine as co-substitute, a kind of pH-sensitive polyorganophosphazenes bearing unsaturated side group was prepared.

以N，N-二甲基乙二胺为阳离子型取代基，甲基丙烯酸羟乙酯或烯丙胺为共取代基，制备了同时带有pH响应性侧基和不饱和双键侧基的聚膦腈。

Depending on the machine's design, either an anionic or cationic detergent is used.

根据对机器的设计，无论是一阴离子或阳离子洗涤剂的使用方式。

The effects of 19 anionic and 36 cationic species in aqua phase were examined.

考查了水相中存在19种阴离子和36种阳离对测定的影响。

The effects,advantages and disadvantages of anionic and cationic membranes and their combinations under different conditions were compared.

结果表明单阴膜法在处理pH值为0.5～1.0，初始镍的质量浓度为1000～2000mg／L的废水应用中有更好的处理效果。

My company produces a variety of cationic, anionic, nonionic range of products, we can deal with different objects to provide the best pharmaceutical product quality reached international advanced level.

我公司生产各种阳离子、阴离子、非离子系列的产品，可以为不同的处理对象提供最佳的药剂，产品质量达到国际先进水平。

It was suggested that vesicles were formed by non-ideal mixing of cationic and anionic surfactants.

在实验结果和文献总结的基础上，说明了在正负离子表面活性剂混合体系中囊泡形成的非理想混合机理的合理性。

The invention relates to a preparation and purification method of bicaudal gemellus quaternary ammonium salt type cationic surfactant.

本发明涉及一种双尾双子季铵盐型阳离子表面活性剂的制备及纯化方法。

In the second part, we develop a novel water-soluble cationic 2,2'- bipyridyl palladium complex to play as a recyclable and extremely active catalyst for Stille reaction in water and air.

另ㄧ研究方向，利用本实验室所研发的可回收及高效率之水相钯触媒 cationic 2，2'- bipyridyl palladium (II 在水中及空气下进行 Stille coupling 。

Then VIII reacted with hydrochloric acid and bromoethlane respectively to get tertiary ammonium chloride and quaternary ammonium bromide cationic surfactants, and the properties of cations were detected by the method of bromophenol blue.

然后再与盐酸和溴乙烷反应，合成铵盐和季铵盐型含氟阳离子表面活性剂，利用酸、碱性溴酚兰实验和铁氰化钾法分别对表面活性剂进行了定性和定量分析。

The results show that the decay of retinol and retinyl acetate are much faster in anionic micelles than that in cationic micelles and neutral micelles(TX-100), which indicate that the decay is carried out by the protonation of retinol or retinyl acetate first, then one molecular water or acetic acid is lost to produce the carbonium ion, which release the proton followed to generate the anhydroretinol.

数据显示，维生素A及其乙酸酯在阴离子胶束溶液SDS中的衰变速度要远大于在阳离子胶束溶液CTAB和中性胶束溶液TX-100中的衰变速度。

We are forbidden from giving money to these shoeless, skinny children, as this will perpetuate begging.

向光着脚，骨瘦如柴的孩子施舍是不可以的，因为要招来无休无止的乞讨。

It would be hard not to fall victim to some sharpeyed policeman.

要想不被某个目光锐利的警察抓到，谈何容易。