查询词典 A acid

A method for simultaneously determining sorbic acid, benzoic acid and saccharin sodium in processed fishery product was established.

采用高效液相色谱法同时测定水产品中的山梨酸、苯甲酸、糖精钠，实验采用铁氰化钾和乙酸锌作沉淀剂，取得了良好的净化效果。

In this paper,a rapid and sensitive method of reverse high performance liquid chromatography for simultaneously determinating the benzoec acid and sorbic acid in drinks was established .

建立一种测定饮料中苯甲酸和山梨酸含量的快速反相高效液相色谱法。

For further understanding the effect of the strain on K-bearing silicate mineral, an experiment with KO2 strain cultured in nitrogen-containing and nitrogen-free medium was conducted. By putting mineral powders into the medium and measuring the concentration of capsular polysaccharides, we concluded that the strain can accelerate the weathering rate of silicate minerals. The results showed that the polysaccharides secreted by the strain in the growth process could help the bacterial to adhere to the mineral surface effectively, and created the bacterium-mineral complex, which formed a mircro-enviorment avail the release of potassium. Another result was that there was higher level of Carbonic Anhydrase activity, which revealed that some exo-protein or enzyme produced by the bacterial had postive impact on the process of releasing potassium ion. We carried out the bacterial fermentation for larger scale production of the bacterial secretion, which was used to sperate, and identify the small molecules related to the mineral-bacterial interaction. After the analysis, it was found that the strain can produce many kinds of small molecules, such as 2-Hydroxybenzoic acid, 4-Hydroxyphenylacetic acid, methyl-4-hydroxybenzoate, etc.

分别将菌株接入含有不同矿粉的培养基中培养，检测其在有氮、无氮培养基中荚膜多糖含量的变化，并在以钾长石和黑云母为矿源的情况下，比较研究了菌株在有氮、无氮培养基中对矿物的风化能力，通过一系列的实验，证实胶质芽孢杆菌在生长过程中所分泌的粘稠胞外聚糖可帮助细菌有效黏附在矿物表面，形成细菌-矿物复合体，并改变及维持该复合体内部的微环境，有助于该菌的解钾作用，而且细菌分泌的胞外蛋白质在该菌对含钾硅酸盐矿物的解钾作用过程中发挥重要作用；将胶质芽孢杆菌接入以钾长石和黑云母为矿源的有氮、无氮培养基中培养，检测到该菌碳酸酐酶活性的变化，并进行批量发酵后小分子酸性分泌产物的提取、分离、纯化与鉴定等方面的研究，结果表明，该菌可产生2-羟基苯甲酸，4-羟基苯乙酸，4-羟基苯甲酸甲酯等小分子物质。

The right formula of the TiO2 sol was found through discussing the influence of acetic acid and hydrochloric acid. Then in different factors such as temperature, pH value had been studied the experiments of the influences upon the time of TiO2 sol into gelation.On the surface of the textiles treated with the sol-gel process may form a thin sporous oxide film.

本论文将成功制备的稳定透明的TiO_2水溶胶用于纯棉织物后整理上，使织物具有一定的屏蔽紫外线和拒水的性能，并且研究了TiO_2水溶胶与环氧基改性硅氧烷水溶胶复合使用，对直接染料染色的织物进行后整理，能起到较好的固色效果。

Drugs were injected intravenpusly by a syringe pump and their effect on pentagastrin-induced [ 1Og/, iv] gastric acid secretion was measured - The results were as follows:(1 ) The inhibitory effect of HA on gastric acid secretion was abolished by subdiaphragmatic vagotomy.

用注射器泵静脉每小时给药，观察其对五肽促胃液素(10μg/kg，iv)诱导的胃酸分泌的影响。

Sulfonic acid is a foaming acid available from some of the oil companies.

磺酸是从一些炼油公司获得的一种起泡酸。

In this paper, the emulsifier sodium polyether sulfovinate modified polysiloxane was synthesized by sulfuric acid esterification between chlorosulfonic acid and polyether modified polysiloxane, then alkali neutralization. It was a kind of nonionic and anionic composite emulsifier.

本论文以聚醚改性聚硅氧烷为原料，进行硫酸酯化反应，并进一步用碱中和，合成了聚醚改性聚硅氧烷硫酸酯钠乳化剂，该乳化剂属于非离子、阴离子复合型乳化剂。

It shows that sulphamic acid is a good solid acid catalyst for Pechmann reaction.

实验结果显示，氨基磺酸是Pechmann反应的良好固体酸催化剂。

Polyaniline/Sulphosalicylic Acid nanotubes and nanofibers which are formed by doping 5-sulphosalicylic acid into aniline, neodymium oxide( Nd_2O_3) and Polyaniline/ Nd_2O_3 composite nanomaterial are successfully synthesized by a method of template.

利用模板法合成了5-磺基水杨酸与苯胺掺杂形成的聚苯胺/磺基水杨酸纳米纤维及纳米管，以及氧化钕(Nd_2O_3)纳米棒和PAN/Nd_2O_3复合纳米材料。

For resolving the lack of solubility data terephthalic acid in aqueous acetic acid, a method of determining the solubility at high temperature was developed.

针对对苯二甲酸工业中的溶解度基础数据缺乏的问题，提出了一种测定高温下对苯二甲酸在醋酸水溶液中的溶解度的方法。

Since historical times,England ,where the early inhabitants were Celts, has been conquered three times .

从有历史以来，英国，在此地早期居住的是凯尔特人，已经被征服了三次。

Bluetooth OBEX File Transfer Enables the sending and receiving of files on your phone via Bluetooth.

蓝牙OBEX文件移动允许经过蓝牙传送和接受文件。。。。