查询词典 hydroxide

The method is characterized in that:(1) the reflux of the 2-[N, N- 2amino]-3-cyano-group-4-thiopheneacetic-5-carboxylic acid tetra ester is carried out in the proper sodium hydroxide aqueous solution of alcohol for 5h to 6h and the pH value is kept over 10 during hydrolysis;(2) the ethanol of 20 per cent to 60 per cent is added and then the strontium chloride aqueous solution with 2times to 2.5times molal weight is directly added, precipitates the crystal, is filtered and dried;(3) water is added to carry out the reflux and the little salt packed in the crude product is removed, and the product is collected through heat filtration.

其特征在于：①将2--3-氰基-4-羧甲基噻吩-5-羧酸四酯在适量氢氧化钠水醇溶液中回流5～6小时，水解过程保持pH值10以上；②然后再加入20-60％乙醇，随后直接加入2-2.5倍摩尔量氯化锶水溶液，析出结晶，过滤，晾干；③加水回流，除去粗品中包裹少量盐，热过滤，收集产品。

Polyaluminum chloride is a new and efficient inorganic polymer coagulants. The products use aluminum hydroxide, hydrochloric acid, calcium aluminates made with advanced technology, have a good flocculation effect. its effect is better than the traditional aluminum sulfate and water purification molysite ordinary inorganic coagulants and general polyaluminum chloride. Solid products using spray drying technology for liquids and dry products for 10 days.

聚合氯化铝是一种新型高效的无机高分子混凝剂，本产品选用氢氧化铝、合成盐酸、铝酸钙粉以先进工艺制成，具有良好的絮凝效果，其净水效果优于传统的硫酸铝和铁盐等普通无机盐类混凝剂及一般的碱式氯化铝，固体产品采用喷雾干燥技术，对液体进行干燥，产品为淡黄色。

The optimal conditions were obtained that isopropanol concentration 95% mass ratio of sodium hydroxide to soybean dietary fiber and monochloracetic acid 1.00:1.25:1.20, alkalization time 60 minutes, etherification temperature 70 degrees C, and etherification time 120~150 minutes.

以大豆膳食纤维为原料，一氯乙酸为醚化剂，异丙醇为溶剂，制备了羧甲基大豆膳食纤维，研究了异丙醇溶液质量分数、NaOH用量、MCA用量、碱化时间、醚化温度、醚化时间对产品羧甲基质量分数的影响。

In the CMKGM preparation section,with the indicators of DS andη, the optimum laboratory conditions preparation of a certain molecular weight of the high DS of CMKGM: reaction time (5～6) h, the theory of the degree of substitution (2～3), the molar ratio of monochloroacetic acid to Sodium hydroxide (2:1～3:1),the reaction temperature (55～65)℃, liquid ratio (10:1～12:1)mL/g, containing enthanol (50～70)%.

CM(来源：5e60ABC论文网www.abclunwen.com)KGM制备工艺研究中，以取代度、表观粘度为指标，建立了制备一定摩尔质量的高DS的CMKGM的实验室制备条件：反应时间(5～6)h、理论取代度(2～3)、氢氧化钠与氯乙酸摩尔比(2：1～3：1)、反应温度(55～65)℃、液料比(10：1～12：1)mL/g、乙醇体积分数(50～70)%。

In this article, high DS and low viscosity carboxymethyl starch was prepared in aqueous media through the reaction between corn starch with acid treatment and etherifying agent, the effect of acid treatment time, liquor/material ratio, the amount of sodium hydroxide, the amount of monochloroacetic acid, etherification time, and reaction tempera.

以玉米淀粉为原料，采用酸化-醚化复合变性的方法在水相中制备高取代度低黏度羧甲基淀粉，探讨了酸化时间、液固比、NaOH用量、ClCH2COOH用量、醚化反应时间、反应温度对羧甲基化过程的影响，研究发现，对原淀粉进行酸化，可以在不增加其它反应试剂用量的基础上提高产物的取代度，但是酸化时间不应过长。

By a specific process,high quality calcium stearate was prepared by reaction of calcium hydroxide with stearic acid in water under morphemic pressure.

探讨了在常压下水介质中，使用直接法通过由硬脂酸与氢氧化钙反应，制得高质量生物钙强化剂的各种工艺条件。

Gel consists of: Testosterone, ethanol, purified water, sodium hydroxide, Carbomer 940 and isopropyl myristate.

凝胶组成：睾酮，乙醇，纯净水，氢氧化钠，卡波姆940和十四酸异丙酯。

Then obtain heavy magnesium water solution, add interfacial active agent and ammonia to solution, via hydrothermal treatment and filtration washing, dry to gain nemaline magnesium hydroxide.

得到重镁水溶液，向溶液中加入表面活性剂和氨水，经过水热处理，过滤洗涤后、干燥得到纤维状氢氧化镁。

The non-halogen flame retardant PP was prepared by using magnesium hydroxide sulfate hydrate whisker and organophilic montmorillonite as flame retardants. The effects of the contents of MOS and OMMT on the mechanical properties and flame retardancy of the PP were studied. The composites were characterized by means of TGA and CONE.

采用碱式硫酸镁晶须与有机蒙脱土作为阻燃剂制备了阻燃聚丙烯，研究了MOS和OMMT用量对阻燃PP力学性能和阻燃性能的影响，并通过热失重分析和锥形量热仪对材料进行了表征。

The recombinant protein was purified by Ni-NTA affinity chromatography and gel filtration chromatography. The inbred C57BL/6 strains and outbred KM strains of mice were subcutaneously immunized with the protein formulated by either adjuvant ISA720 or aluminium hydroxide.

表达产物通过Ni-NTA亲和层析和凝胶过滤层析方法纯化，再分别与ISA720和Al3佐剂乳化后，免疫C57BL/6和昆明小鼠，通过尾蚴膜反应和ELISA反应检测特异性抗体。

A historical region of southwest France between the Pyrenees and the Garonne River. The duchy of Aquitaine was joined with France after the marriage of Eleanor of Aquitaine to King Louis VII in1137, but its possession was disputed after her subsequent marriage to Henry II of England.

阿基坦法国西南部一个历史地区，位于比利牛斯山和加隆河之间，在1137年阿基坦的埃莉诺与国王路易斯七世结婚之后阿基坦公国加入法国，但当她再嫁英国亨利二世后，其归属权便受到争议

There are moments when I look at the smiling , happy faces of my expectant staff and wonder how they will cope when confronted by an outraged housemaster along with an unrepentant and recalcitrant bleached blond teenager in 18 years ' time .

有时候，我看着那些满怀期待的员工微笑，幸福的脸，想着当他们遇到一位愤怒的宿舍管理员和一位不知悔改，叛逆，而且将头发染成白色的18岁少年时，他们会如何处理。