查询词典 ionic structure

Non-ionic and low-osmolar contrast medium was used during coronary angiography and hemodialysis in one day before and after day operation.Using artery sheath as the artery end during hemodialysis and no supplemental heparin was used,the blood is beyond 200ml/min.

术中选用低渗性非离子型造影剂，于术前1日及术后当日行血液透析，术后透析用动脉鞘管做动脉端，血流量均在200ml/min以上，透析中未追加肝素，4例均无明显渗血，透析器及管路无凝血。

Dihydropyrimidin-2 (1H)-ones were synthesized by condensation of aromatic or aliphatic aldehydes, urea and ethyl acetoacetate or acetylacetone one-pot three-component Biginelli condensation in the presence of room temperature ionic liquids as catalysts under solvent-free conditions.

5利用室温离子液体作催化剂，芳香或脂肪醛、尿素和乙酰乙酸乙酯或乙酰丙酮三组分缩合制备3，4-二氢嘧啶-2-酮衍生物。

This thesis includes two parts. The first part is study on hydroformylation of alkenes in ionic liquid-H2O system.

本论文分两部分：咪唑离子液体—水体系中的烯烃氢甲酰化反应研究和新型咪唑类手性季铵盐的合成。

In order to examine the influence of higher ionic strength on the interaction between QDs and avidin, the fluorescence spectra of free CdTe and CdTe-avidin solution are recorded as a function of increasing NaCl concentration.

实验还考察了盐浓度对QDs-亲和素体系的影响情况，结果发现随着盐浓度的增大，QDs-亲和素体系的荧光峰位逐渐蓝移，而单独量子点的荧光峰位基本不变，这说明盐浓度的增加削弱了CdTe量子点与亲和素分子之间的结合作用。

In this dissertation, the practical significance and the recent development of non-phosgene synthesis of N-substituted carbamates are reviewed briefly, as well as the application of ionic liquids in catalysis.

本论文综述了非光气合成N-取代氨基甲酸酯类化合物的现实意义和研究进展，以及离子液体在催化反应中的应用。

The nano-ionic liquid containing metal complex could be an effective catalyst for oxidative carbonylation of amines to carbamates and disubstituted ureas and for synthesis of unsymmetric ureas from amines and nitrobenzene, in which turn over frequencies exceeded 10000mol/mol/h.

以该系列纳米离子液体为催化剂高效的实现了胺类化合物催化氧化羰化制备氨基甲酸酯和二取代脲（转化频率＞10000mol/mol/h）以及胺与硝基苯通过一氧化碳羰化制备不对称脲的过程。

The sizes of ionic clusters are influenced by the radius of metal cations.

金属离子的半径大小，影响所形成的团簇离子的尺寸。

Upon the ionic deposition of natural rubber latex with coagulants.

沉积方法与凝固剂的附型剂对沉积过程有明显影响。

Based on the introduction of the basic principle and theory of the process, the influences of pH values, metal/polymer ratio, complexation of metallic species simultaneously and ionic strength on complexing process were discussed, At the same time, the effects of temperature, pressure, flow velocity and polymer concentration on ultrafiltration process were concerned, and the regeneration of polymer was also discussed briefly.

阐述了该工艺的基本原理和基本理论，讨论了pH、金属／聚合物比、同时络合多种金属离子和离子强度等因素对络合过程的作用，并分析了温度、压力、流速和聚合物浓度对超滤过程的影响，简述了影响聚合物再生的主要方面。

Based on the introduction of the basic principle and theory of the process,the influences of pH values,metal/polymer ratio, complexation of metallic species simultaneously and ionic strength on complexing process were discussed.

阐述了该工艺的基本原理和基本理论，讨论了pH、金属/聚合物比、同时络合多种金属离子和离子强度等因素对络合过程的作用，并分析了温度、压力、流速和聚合物浓度对超滤过程的影响，简述了影响聚合物再生的主要方面。

Many will continue to choose to live in duality and in conflict.

许多人将继续选择活在二元对立性和冲突中。

I find that students of the University of Physical Education all wear sportswear at first sight.

我发现：体育大学的学生乍一看，都是穿运动衣，大家都一样