查询词典 acid process

Process for the preparation of fluoboric acid from fluosilicic acid,a byproduct of phosphate was introduced.

阐述了利用磷肥副产氟硅酸制备氟硼酸的新工艺。

A direct copolymerisation process was used to prepare lactic acid and glycolic acid copolymer.

采用直接法熔融缩聚制备了L 乳酸和乙醇酸共聚物PLGA ，并用锥板流变仪对PLGA的流变性能进行测试。

The result showed due to yeast fermentation process there were many new aroma components in jujube wine which were different from the juice: Isoamyl alcohol, Phenylethyl alcohol, Benzyl alcohol and so on; jujube juice hexadecanoic acid and other senior fatty acid composition obviously degradated; Alcohols and esters composition were sharply upward.

反映出发酵过程由于酵母的繁殖代谢产生了很多新成分，如异戊醇，丁酸乙酯，辛酸乙酯等；枣汁中十六酸等高级脂肪酸成分明显降解，苯乙醇，2，3-丁二醇，己二酸(2-甲基)丁酯，己二酸二异丙酯等醇类和酯类成分呈急剧上升的趋势。

The dopamine release in vivo was monitored by fast cyclic voltammetry and the concentrations of DA and its metabolites dihydroxy-phenylacetic acid and homovanillic acid were determined by high performance liquid chromatography electrochemical detection in the process study. In addition, the effects of some traditional Chinese herbs and related marine drug on behavioral changes were also evaluated in order to provide some suggestive clue for rational drug design of anti-Parkinon's disease .

许多因素都参与PD的DA能神经元的死亡，所以，本研究在制备PD动物模型的基础上，应用国内率先引进的快速周期伏安法检测设备在体动态监测DA的释放，同时应用另一种电化学检测技术—高效液相色谱电化学检测法离体检测DA及其代谢产物二羟苯乙酸和高香草酸的含量，结合行为学测定及其它方法，研究了雌激素和铁在PD发病中的作用，以及一些药物，如吲哚醌、牛磺酸、铁离子螯合剂、胆囊收缩素（CCK-8）、乌鸡白凤丸有效成份、大豆异黄酮及海洋酸性寡糖HSH971，对DA能神经元的影响，从DA能神经递质角度对PD的发病机理提供进一步的实验依据，并为PD的预防和治疗提供新的干预措施。

Bromododecane was synthesized from n-dodecyl alcohol using byproduct hydrobromic acid from 1-bromoadamantan process as raw material in the presence of the concentrated sulfuric acid.

以生产溴代金刚烷得到的副产品氢溴酸为原料，在浓硫酸存在的条件下与正十二醇进行反应合成1-溴代十二烷。

Process condition study of synthesis of starch of hydroxamic acid type;2. By study of hydroxamic acid synthesis and red mud settling behavior,its high clarified degree was described.

氧肟酸型絮凝剂是近年来国外研制出的一种新型高效絮凝剂，在铝土矿制备氧化铝生产中对赤泥颗粒有很强的聚合力。

It is shown by Infrared spectra that relative concentration of amino formic acid ester has prominent relationship with compressive stress at 10% strain in the process of accelerated hygrothermal tests, which means that hydrolysis of amino formic acid ester is main factor resulting in decrease of compressive properties.

经红外光谱测定，在人工加速湿热老化试验过程中，材料的活性基团氨基甲酸酯的相对浓度与10%定应变压缩应力的相关性显著，氨基甲酸酯水解是材料室内贮存过程中力学性能下降的主要原因。

ResultsThe optimum synthetic conditions were 2 g cinnamic acid,microwave power was 600 W,reaction temperature was 115℃,reaction time was 14 min,mass percent of macroporous resin was 30%,the molar ratio of cinnamic acid to isobutyl alcohol was 1:7, and the yield of the new process was 89.3%.

结果肉桂酸2 g，酸醇摩尔比1∶7，催化剂用量30%，微波功率600 W，微波温度115℃，微波时间14 min，转化率达89.3%。

This article gives a brief introduction to the separation method of m xylene and the production process of isophthalic acid and detailed discussions on the development and applications of the downstream products of isophthalic acid.

简述了间二甲苯的分离方法和间苯二甲酸的生产方法；详细介绍了间苯二甲酸的下游产品开发及其应用。

The synthetic process and the scale inhibition function of the copolymer of itaconic acid-acrylic acid to synthetic water containing CaCO3 have been studied.

作者研究了衣康酸—丙烯酸二元共聚物水溶液的合成工艺及对合成水碳酸钙的阻垢效果。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。