查询词典 anion

In this study, we first synthesize a conducting polymer, P3HT, via Grignard metathesis method. And we functionalize the polymer chain end of P3HT into vinyl group. After characterize from 1H NMR spectroscopy, we use the end functionalized P3HT to proceed coupling reaction with P2VP anion.

为了达到这个研究目的，我们先利用格林纳置换法合成导电高分子P3HT，并将其尾端乙烯化，在经核磁共振仪确定结构后，利用此尾端乙烯化之P3HT与P2VP阴离子反应进行接合。

Ni-P-mCMC/mCS bipolar membrane was prepared from carboxymethyl cellulose modified with phosphorylated agent as a cation exchange layer and chitosan modified with glutaraldehyde as an anion exchange layer. The electrolysis cell was constituted by Ni-P-mCMC/mCS BPM as a septum for electrogenerating furfural alcohol and furoic acid.

以磷酸化试剂改性羧甲基纤维素钠制备了阳膜层，以戊二醛改性壳聚糖制备了阴膜层溶胶，将阴膜层溶胶流延于阳膜层上，制备了P-mCMC/mCS双极膜，而后以化学镀方法在阳膜层表面镀镍，制备了Ni-P-mCMC/mCS双极膜，并应用于成对电合成糠醇、糠酸。

These SRMs are single component solutions prepared gravimetrically for use in anion chromatography or any other technique that requires aqueous standard solutions for calibration or control materials.

这些标准粒子是单组分的，在重量方面用于阴离子色谱或任何其他技术，需要进行校准或控制水标准的解决方案材料。

With the theory of Hydrophile-lipophile Balance, it is found that the most suitable anion surfactant for preparation of PPy is heptanoic acid, and get a conclusion that there is a best matching relation between the concentration of surfactant and the state of the porous substrate.

根据亲水亲油平衡理论，找出了最适合制备聚吡咯薄膜的阴离子表面活性剂——庚酸，并且通过试验得出了表面活性剂浓度与基底不同的多孔状态存在最佳匹配关系的结论。

The concentration of liquid hydrocarbon B is 10%.the dosage of hydrophobe is 15%~20%. The condensation and used environment of defoaming agent were studied ,the experiments show that self-made defoamer can be the same with many bubbly systems,such as anion, zwitterions, Nonionic bubbly liquid et al.and it can be used from acidity to alkalescence conditions.the fitting dosage is 9‰～10‰to polyester,6‰to siloxane-polyester copolymer,and 3‰to mulriple defoamer.

对消泡剂的投加浓度、适用环境等作了相关应用研究，结论为：消泡剂适用的起泡体系较广，阴离子、两性离子、非离子型起泡液均可使用；适用PH值范围可从酸性至弱碱性，适宜加入量为(以占起泡体系的体积分数计)：聚醚酯消泡剂9-10‰，有机硅改性聚醚酯消泡剂6‰，复配消泡剂3‰。

The results showed that the catalytic selectivity of this transesterification reaction over these organic anion-pillared hydrotalcite was significantly improved.

结果表明，与水滑石相比，org-LDHs对碳酸二甲酯与苯酚酯交换反应的催化选择性有显著的提高。

The light and thermal stability of methyl orange anion-pillared hydrotalcite was enhanced to a considerable extent, comparing with that of methyl orange.

该超分子结构材料不仅保持了甲基橙本身的颜色，而且与甲基橙相比，其耐光性和耐热性均有大幅度的提高。

The experimental results showed that when AcO-or other anion s were added to a solution consisting of 1,5-(di-benzaldehyde) dithiocarbohydrazone and Hg2+(at a ratio of 1∶2),a hypsochromic shift took place on the maximum ultraviolet absorption peak of the ligand.

设计合成了配体1，5-二双缩二氨基硫脲及其金属配合物，探讨了不同金属阳离子对1，5-二双缩二氨基硫脲紫外吸收光谱的影响，并将标题化合物应用于阴离子识别。

The addition reactions with phosphine anion andthe CsF promoted Strecker reactions were chose to evaluate the relationship of thesetwo chiral groups in the diastereoselective additions of the imino group.

通过亚磷酸负离子的加成反应和CsF促进下的Strecker反应研究了这两个手性基团的不对称诱导的匹配情况。

Owing to the action of space separation in inclusion compound and the solvationof water for isolating the charge in ion pair, the lifetime of C〓 anion radical inaqueous system was obviously longer than that in organic solvents.

对同种胶束，给体分子的取代烃链越长，意味着其疏水性增加，导致给体端N原子与C〓分子间距离缩短，从而降低了阴离子自由基的寿命。

In the negative and interrogative forms, of course, this is identical to the non-emphatic forms.

。但是，在否定句或疑问句里，这种带有"do"的方法表达的效果却没有什么强调的意思。

Go down on one's knees;kneel down

屈膝跪下。。。下跪祈祷