盐酸

Experimental study on extraction of gold and silver from the carbonaceous silver concentrate By cyanidation—ferric salt oxidizing process

利用KClO3作氧化剂，对银精矿进行氧化预处理，考察盐酸浓度、氧化剂加入量、亚硫酸钠浓度和浸出时间对银浸出率的影响，在盐酸3。

The best conditions for the concentration of hydrochloric acid hydrolysis of 28% hydrochloric acid consumption of 180 ml, hydrolysis time 10 hours, which has a volume of 0.2720 g cystine.

最佳水解条件为盐酸浓度28%，盐酸的用量180ml，水解时间10小时，所得到的胱氨酸量

Second, guanidine chloride is another important denaturant used commonly for protein unfolding. It is believed that guanidine chloride and urea have a similar mechanism of action.

其次，盐酸胍是常用于使蛋白质变性的另一种重要变性剂，盐酸胍分子与蛋白质分子相互作用的机理和尿素的情形具有相似性。

In Chapter 2 of this thesis, the kinetic equation of substrate reaction in presence of denaturant has been derived. A re-examination of the effect of high concentrations of guanidine hydrochloride on the inactivation of papain, taking into consideration the effect of high concentrations of guanidine hydrochloride on the Michaelis constant, showed that, for papain, the substrate gives no protection on its inactivation.

我们在第二章中推导了变性剂存在下的底物反应动力学方程，并在考虑了高浓度盐酸胍对酶催化反应米氏常数的影响的前提下，根据推导的动力学方程重新分析了盐酸胍存在下木瓜蛋白酶的失活动力学，结果表明底物对木瓜蛋白酶的失活没有保护作用。

HPLC method for determination of ciprofloxacin hydrochloride and hydrocortisone in compound ciprofloxacin hydrochloride eardrops was established.

建立了复方盐酸环丙沙星滴耳剂中盐酸环丙沙星与氢化可的松的HPLC测定法。

Uranium solution is obtained electrolytically by reducing uranyl ion on mercury cathode. The effect of the addition of various aminopolycarboxylic acids (such as EDTA, DTPA, CyDTA and TTHA) and organic water-miscible solvents (such as CH3OH, C2H5OH and CH3COCH3) on the stability of ura-nium in air has been investigated. The absorption spectra of uraniumand uraniumin 1 mol/l and 9mol/l hydrochloric acid solutions are examined.

本文采用汞阴极电解还原法制备了铀溶液，研究了在盐酸介质中各种氨羧络合剂乙二胺四乙酸二钠、二乙三胺五乙酸、1，2-环已烷二胺四乙酸、三乙基四胺六乙酸和水溶性有机溶剂甲醇、乙醇和丙酮的存在对铀稳定性影响，测定了在不同盐酸浓度中铀和铀的吸收光谱。

Objective To develop an HPLC method for determination of impurities in ephedrine hydrochloride and pseudoephedrine hydrochloride.

目的 建立盐酸麻黄碱和盐酸伪麻黄碱中杂质的高效液相色谱HPLC测定方法。

Objective To develop a method for determination of Ephedrine Hydrochloride in Ephedrine Hydrochloride nasal drops by HPLC.

目的 建立用高效液相色谱法测定盐酸麻黄碱滴鼻液中盐酸麻黄碱含量的方法。

The better reaction conditions are as follows: Reaction temperature is 40°C, Reaction time is 5 hour; the ratio of L - phenylalanine to acetic acid and N - formyl - L- aspartyl anhydrideis 1:10.2:1.1, Its yield is 95.4%.

在查阅文献的基础上，得到较优的α-L-天冬氨酰L-苯丙氨酸甲脂盐酸盐的合成方案，在甲醇一水体系中，N-甲酰-α-L-天冬氨酰-L-苯丙氨酸在浓盐酸的作用下60℃水解90分钟，后冷却到15℃加入浓盐酸在20～30℃保温反应96小时，进行甲脂化，形成甲脂盐酸盐，结晶析出。

The production principle of synthetic hydrochloric acid was introduced,and heat generated in the every process was calculated in this paper.

介绍了合成盐酸的生产原理，对合成盐酸热能进行了计算，并结合工厂实际提出了热能回收利用的措施。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。