查询词典 anion

In this paper, adipate -intercalated LDHs were prepared by direct anion exchange method,acidic one step synthesis method and alkaline one step synthesis method,and were characterized by XRD and IR.

采用阴离子直接交换法、酸性和碱性条件下原位一步合成法分别制备了Mg2Al-己二酸根插层水滑石，用XRD、IR对合成的样品进行了组成和结构表征，DTA结合不同温度下焙烧样品的XRD和IR分析研究了样品的热分解过程。

Objective: To study the relationship between serum anion gap and serum albumin in patients of chronic renal failure.

目的 ：探讨血清白蛋白对慢性肾衰氮质血症期患者的血清阴离子隙的影响。

The nucleophilic attack step of a classical Aldol reaction was studied using acetaldehyde anion and formaldehyde as reactants.

采用乙醛负离子和甲醛作为反应物，对经典的醛醇缩合反应中的亲核进攻步骤进行了研究。

DCAD is looked as efficiency index to the quantitative analysis of the bad ingredient in the alkalescency source dietary, and to feeding the anion dietary.

当前预防奶牛乳热症的方法主要是通过平衡干奶牛日粮离子，日粮阴阳离子间隙便应运而生，它作为定量分析碱源性日粮中的有害成分和饲喂阴离子日粮的有利作用的指标。

The anion-exchange ion chromatography is suitable for the separation and analysis of alkaline earth metal ions, transition metal ions and rare earth metal ions.

综述了离子色谱法分析金属离子的研究进展，对目前应用于分析金属离子的阳离子交换IC、阴离子交换IC和螯合离子色谱进行了评述。

The invention relates to a method for making oligomeric isocyanates by reacting diisocyanates in the presence of a catalyst, wherein the catalyst comprises a saline compound prepared from an anion selected from 1,2,3- or 1,2,4-triazole, a substituted species of 1,2,3- or 1,2,4-triazole and carbocyclically and/or heterocyclically annellated species of 1,2,3- or 1,2,4-triazole and the cation selected from an alkali metal, alkaline-earth metal and/or monovalent ammonium cation and/or phosphonium cation of formula (5), wherein the E, R1, R2, R3, R4 are as defined in the descriotion.

本发明涉及一种制备低聚异氰酸酯的方法，包括二异氰酸酯在催化剂的存在下进行反应，其中所述催化剂由盐化合物组成，该盐化合物由选自1，2，3-或1，2，4-三唑、1，2，3-或1，2，4-三唑的取代系列者、1，2，4-三唑的碳环稠合系列者、1，2，3-或1，2，4-三唑的杂环稠合系列者的化合物及其混合物的阴离子和选自碱金属、碱土金属和/或通式(5)的一价铵阳离子和/或磷友衾胱拥难衾胱又票福其中E、R 1 、R 2 、R 3 和R 4 如说明书中所定义。

The paper researches the mechanism of anion surfac tant in sodium aluminate solution decomposition process.

目的研究铝酸钠溶液晶种分解过程中阴离子表面活性剂的作用机理。

An amidase from a strain Bacillus cereus ZJB-07112 was purified to homogeneity by using sonication, anion-exchange chromatography, phenyl-sepharose chromatography.

用一株蜡状芽孢杆菌新菌株ZJB-07112 ( Bacillus cereus ZJB-07112)发酵生产酰胺酶，经超声波细胞破碎、High Q阴离子色谱、Phenyl-Sepharose疏水色谱等步骤获得了凝胶电泳均一的酰胺酶。

A amidase from a strain Bacillus cereus ZJB-07112 was purified to homogeneity by using of the sonication, anion-exchange chromatography, Pheny1-Sepharose chromatography.

用一株蜡状芽孢杆菌新菌株ZJB-07112 (Bacillus cereus ZJB-07112)发酵生产酰胺酶，经超声波细胞破碎、High Q阴离子层析、Phenyl-Sepharose疏水层析等步骤获得了凝胶电泳均一的酰胺酶。

This paper introduces the mechanism of anion production, and its development and application in textiles.

介绍了负离子的产生机理以及在纺织品方面的开发与应用。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。