查询词典 acid

These three kinds of Bile extraction were qualitatively detected by using the paper chromatography and infrared spectral scanning method, and the results show that These extractions have the same Rf value and infrared spectra's characteristic absorption peak as choleic acid, glycocholic acid and taurocholic acid standard preparation which can prove that These three kinds of Bile extraction are choleic acid, glycocholic acid and taurocholic acid respectively.

采用薄层层析法和红外光谱扫描法对提取物进行定性检测，结果证明三种提取样品分别与胆酸、甘氨胆酸及牛磺胆酸标准品显色斑点Rf值相同，红外光谱特征吸收峰均一致，表明提取出的三种样品分别为胆酸、甘氨胆酸、牛磺胆酸结晶体。

The study on the extracting small experiment of Choleic acid, Glycocholic acid and Taurocholic acid.The extracting small experiments of Choleic acid, Glycocholic acid and taurocholic acid were studied by adopting deproteinizatio, depigmentation, extraction and column chromatographic fractionation.

提取胆酸、甘氨胆酸、牛磺胆酸的小试工艺研究采用脱蛋白、除色素、萃取、柱层析分离等方法开展了从牛羊混合胆汁中分离、提取和纯化胆酸、甘氨胆酸及牛磺胆酸三种有效成分的小试提取工艺研究。

A simple and sensitive method was investigated for simultaneous determination six organic acids in wine (tatartic acid, citric acid, malic acid, formic acid, acetic acid and succinic acid) by single ion-exclusion chromatography with conductometric detection.

用单柱离子排斥色谱法分离结合电导检测同时测定了多种有机酸（酒石酸、柠檬酸、苹果酸、甲酸、乙酸和琥珀酸）。

N,N'-ethylenediamine diacetic acid was prepared by condensation of ethylenediamine, formaldehyde and potassium cyanide. Then 2-oxo-1-piperazine acetic acid was prepared from N,N'-ethylenediamine diacetic acid. In addition, 2-oxo-1, 4-piperazine diacetic acid(3-KP) was prepared from 2-oxo-1-piperazine acetic acid with chloroacetic acid.

本文用乙二胺、甲醛和氰化钾合成了N，N′—乙二胺二乙酸，然后由N，N′—乙二胺二乙酸合成了2—氧—1—哌嗪乙酸，再由2—氧—1—哌嗪乙酸和氯乙酸合成了2—氧—1，4—哌嗪二乙酸(3-KP)。

Its main products include:ZOLEDRONIC ACID, ADAPALENE, SIMDAX, VORICONAZOLE, J ACID UREA, J ACID UREA SODIUM SALT, 1,7-CLEVE'S ACID, 1,6-CLEVE'S ACID, 1,5- DINAPHTHYL ISOCYANATE, 5- INROINDOLE,----2-METHOXYIMINO-2-（FURYL-2-YL）ACETIC ACID AMMONIUM SALTand etc.

部分产品远销美国、德国、英国、印度、日本等十几个国家和地区，主要产品有：唑来磷酸、阿达帕林、左西孟旦、伏立康唑、猩红酸、猩红酸钠盐、双介酸、1，7克力夫酸1，6克力夫酸、1，5-萘二异氰酸酯、5-硝基吲哚、甲氧亚胺基呋喃乙酸铵等。

Professional sales companies operating bromide products: sodium bromide, sodium bromide, potassium bromide, potassium bromate, Tetrabromobisphenol A, Deca-BDE, ten PBDEs, DBDPE, hexabromodiphenyl Central dodecane, dibromo neopentyl glycol, neopentyl bromide three alcohols, three bromine phenol, octabromodiphenyl ether, brominated polystyrene, bromide, calcium bromide, dibromo succinic acid, dibromo-D ene glycol, bromide surfactants series: Dodecyl trimethyl ammonium bromide, tetradecyl trimethyl ammonium bromide, cetyltrimethyl ammonium bromide, octadecyl trimethyl ammonium bromide dodecyl trimethyl ammonium chloride, tetradecyl trimethyl ammonium chloride, cetyl trimethyl ammonium chloride, octadecyl trimethyl ammonium chloride, tetrabutyl ammonium bromide wholesale sales: dimethylolpropionic acid, DL-malic acid, isophthalic acid PIA, glycolic acid, adipic acid.

公司专业经营销售溴化物系列产品：溴化钠、溴酸钠、溴化钾、溴酸钾、四溴双酚A、十溴二苯醚、十溴联苯醚、十溴二苯乙烷、六溴环十二烷、二溴新戊二醇、三溴新戊醇、三溴苯酚、八溴醚、溴化聚苯乙烯、溴化铵、溴化钙、二溴丁二酸、二溴丁烯二醇、溴化表面活性剂系列：十二烷基三甲基溴化铵、十四烷基三甲基溴化铵、十六烷基三甲基溴化铵、十八烷基三甲基溴化铵、十二烷基三甲基氯化铵、十四烷基三甲基氯化铵、十六烷基三甲基氯化铵、十八烷基三甲基氯化铵、四丁基溴化铵批发销售：二羟甲基丙酸、DL-苹果酸、间苯二甲酸 PIA、羟基乙酸、己二酸。

Allantoin was synthesized from glyoxylic and urea as raw materials using organic acid such as formic acid,oxalic acid and organic sulfonic,and one or two of organic acids such as hydrchloric acid,sulfuric acid and acetic acid catalyst.

以乙醛酸和尿素为原料，有机酸(如甲酸、乙二酸、有机磺酸等)、无机酸(如盐酸、硫酸、磷酸、醋酸等中的一种或两种)作催化剂合成了尿囊素产品。

The result indicated that the cellular fatty acid compositions of Salmonella, Escherichia coli, Vibrio and Shigella all contain tetradecanoic acid, hexadecanoic acid and octadecenoic acid, the total content is around 90%, in which the hexadecanoic acid is the most, above 40%, next is the octadecenoic acid, around 30%.

结果表明：沙门氏菌属、埃希氏菌属、弧菌属和志贺氏菌属全细胞脂肪酸组分都含有十四烷酸、十六烷酸和十八碳烯酸，这三种脂肪酸占总脂肪酸含量的90%左右，含量最高的是十六烷酸，含量在40%以上，其次是十八碳烯酸，含量在30%左右。

The method is characterized in that the acid solution of one of hydrochloric acid, sulfuric acid, nitric acid, phosphoric acid and hydriodic acid is divided into two portions; aniline monomer and ammonium persulfate are respectively added; then aniline monomer solution and ammonium persulfate solution can be prepared.

一种乙酸松油酯的制备方法，其特征是，将盐酸、硫酸、硝酸、磷酸、氢碘酸中任一种酸溶液分成两等份，并分别加入苯胺单体和过硫酸铵，形成苯胺溶液和过硫酸铵溶液。

Therefore can pass to use the cupric sulfate sulfuric acid potassium for the catalyst take sulfuric acid as to carry the body to digest it, make the amino acids chelate match the conversion for dissolve sex easily of ammonium sulfate and white vitriol, then absorb a fixed amount to try the kind to join 40% sodium hydroside combine under the steam heat function make ammonia the spirit swims to leave out, through cool off to respond the born boric acid with boric acid, be got the total nitrogen content by the standard aqua titration of hydrochloric acid immediately after;But the white vitriol can immediately join the hydrochloric acid hydroxylate , fluoride to turn the in order to cover up, carry on the titration but get the content of its zinc with the EDTA mark liquid..

因此可以通过用硫酸铜硫酸钾为催化剂以硫酸为载体将其消化，使氨基酸螯合锌转化为易溶性的硫酸铵和硫酸锌，然后吸取一定量的试样加入40 %的氢氧化钠并在水蒸气高温作用下使氨气游离出来，经冷却与硼酸反应生成硼酸铵，接着由盐酸标准溶液滴定得到总氮含量；而硫酸锌即可加入盐酸羟铵、氟化氢铵为掩蔽剂，用EDTA标液进行滴定而得到其锌的含量。

The concept of equivalent rotationally rigidity is offered and the formula of rotationally rigidity is obtained.

主要做了如下几个方面的工作：对伸臂位于顶部的单层框架—筒体模型进行分析，提出了等效转动约束的概念和转动约束刚度的表达式。

Male cats normally do not need aftercare with the exception of the night after the anesthetic.

男猫通常不需要善后除了晚上的麻醉。