乙酸基

A method used to simutaniously analyze the residues of herbicides 2, 4-dichlorophenoxyacetic acid (2,4-D), 2-(2,4-dichiorophenoxy) propanoic acid (2,4-DP) and 2,4-dichiorophenoxybutyric acid (2,4-DB) in garlic was developed in our study.

本研究建立了一种应用基质固相分散－高效液相色谱法，同时测定大蒜中2，4-二氯苯氧乙酸、2，4-二氯苯氧丙酸及2，4-二氯苯氧丁酸等3种2，4-D类除草剂残留的方法。

We had finished some items such as propanoic acid and acetic acid series antimildew compound. animal and vegctable hydrolyzed protcin. yeastextracts. starch sodium octenylsuccinate. etc.

自成立10年以来，在食品添加剂中开发了丙酸系列、乙酸系列防霉剂，动植物水解蛋白，酵母抽提物，辛烯基琥珀酸淀粉钠等。

Approximately 30 mg of fresh algal material was extracted by homogenising it in ice-cold 5% 5-sulfosalicylic acid solution containing 6.3 mM diethylentriaminepentaacetic acid, according to De Knecht et al.

大约30毫克的淡水藻类物质提取homogenising在冰冷的5％的5-磺基水杨酸溶液的载有6.3毫米三乙四胺五乙酸，根据De Knecht等人（1994年）。

It was observed that indoleacetic acid could greatly enhanced the chemiluminescence intensity of tris-(1,10-phenanthroline) ruthenium Ru(phen(superscript 2+ subscript 3)-cerium system. Based on this finding, a novel CL method was developed for the determination of IAA.

基於吲哚乙酸对三（1，10-菲咯啉）钌[Ru(上标 2+下标 3)]-Ce化学发光体系的发光增强作用，建立了一种化学发光直接检测IAA的新方法。

4Production of chemical products from which narcotics are easily made ephedrine, 3, 4-idene dihydro phenyl -2-acctonc, phenyl acetic acid, 1- phenyl -2-acetone, heliotropin, safrole, isosafrole, acetic oxide

易制毒化学品生产（麻黄素、 3 ， 4-亚基二氧苯基-2-丙酮、苯乙酸、 1-苯基-2-丙酮、胡椒醛、黄樟脑、异黄樟脑、醋酸酐

It was expressed as inclusion body and was purified by Ni-NTA Column Affinity Chromatography under denaturing conditions. The inclusion body was then refolded by two different ways, both of which can produce activated enzyme.

在变性条件下，包涵体经镍次氮基三乙酸柱层析纯化，并以两种不同的方法进行复性，均可获得具有活性的HaSNPV几丁质酶。

Heating, ethanol precipitation, and ion-exchange chromatographies had been carried out to isolate the protein with specific stimulating activity from newborn calf liver, and [(3)H]thymidine deoxyribose/bromodeoxyuridine incorporation and carboxyfluorescein diacetate succinimidyl ester-based proliferation assay to determine the bioactivity in vitro and in vivo.

通过用加热、乙醇沉淀、离子交换层析等方法来分离新生小牛肝脏中含有特殊刺激活性的蛋白和用胸嘧啶脱氧核糖/溴脱氧尿苷联合羧基荧光素双乙酸钠琥珀酸酯为基础的扩增分析其体内和体外的生物活性。

The depressing ability of the macromolecule organic depressants can be improved by the increase of their D.S.. The high D.S. CPVA and CPEG show strong depressing ability to calcite, while CPEG indicates strong depressing ability to diaspore, and HPAM to pyrite.The depressing mechanism of organic depressants was confirmed by the measurements of zeta potential, contact angles, adsorption capacity and IR spectrum.

利用动电位、接触角、吸附量和红外光谱等测试方法和手段，探讨了抑制剂的作用机理：苯氧乙酸类小分子抑制剂与方解石之间可发生较强的化学作用，可以选择性地吸附在方解石表面，使捕收剂发生解吸或阻止捕收剂在矿物表面的吸附而使矿物受到抑制；大分子抑制剂则主要是依靠亲固基吸附在矿物表面，再利用其长链的强亲水性而使矿物受到抑制。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。