查询词典 amino-isovalerianic acid

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。

The simple and fast determination method presented is based on initial chelation of Sn4+, Cu2+, Pb2+ and other metal ions with EDTA and its subsequent decomposition with trihydroxybenzoic acid, mercaptosuccinic acid and dithiocarbamic propanoic acid.

本文提出的简易、快速测定方法是用EDTA螯合锡、铜、铅和其它金属离子，然后分别用三羟基甲酸、巯基丁二酸和氨荒丙酸解蔽。

NSC-7 could degrade 73.6% of rice straw within 14 d. 10 kinds of material were detected in volatile products by gas chromatography mass spectrometry, and they were mainly acetic acid, glycerol, butyric acid, and propanoic acid. NSC-7 could retain stable degrading ability and high cellulase activity after preserved in -80℃ and freeze-drying for four years. It could remain its degrading ability after 90℃ of high temperature treating for 30 min, and resume its degrading ability after subcultured 2 times after 105℃ of high temperature treating for 30 min in autoclave.

NSC-7在14 d的培养过程中，使稻秆分解73.6％；用GC-MS测定结果发酵液中检测到10种化合物成分，其中峰值较大的依次为乙酸、甘油、丁酸、丙酸； NSC-7在-80℃冷冻和冻干条件下保存4年后仍具有稳定的秸秆分解能力和纤维素内切酶活性；经90℃高温处理30 min后，仍能够保持分解能力， 105℃处理30 min后转接2次就能恢复分解能力，显示出很高的保存稳定性和热稳定性。

NSC-7 could degrade 73.6% of rice straw within 14 d. 10 kinds of material were detected in volatile products by gas chromatog- raphy mass spectrometry, and they were mainly acetic acid, glycerol, butyric acid, and propanoic acid.

NSC-7在14d的培养过程中，使稻秆分解73.6%；用GC-MS测定结果发酵液中检测到10种化合物成分，其中峰值较大的依次为乙酸、甘油、丁酸、丙酸；NSC-7在-80℃冷冻和冻干条件下保存4年后仍具有稳定的秸秆分解能力和纤维素内切酶活性；经90℃高温处理30min后，仍能够保持分解能力，105℃处理30min后转接2次就能恢复分解能力，显示出很高的保存稳定性和热稳定性。

NSC-7 could degrade 73.6％of rice straw within 14d. 10 material were detected in volatile products by gas chromatography mass spectrometry,and it was mainly acetic acid, glycerol, butyric acid, and propanoic acid. NSC-7 could retain stable degrading ability and high cellulase activity after preserved in -80 and freeze℃-drying for four years. It could remain its degrading ability after 90 of high ℃temperature treating for 30min, and resume its degrading ability after subcultured 2 times after 105 ℃of high temperature treating for 30min in autoclave.

NSC-7在14d的培养过程中，使稻秆分解73.6％；用GC-MS测定结果发酵液中检测到10种化合物成分，其中峰值较大的依次为乙酸、甘油、丁酸、丙酸；NSC-7在-80℃冷冻和冻干条件下保存4a后仍具有稳定的秸秆分解能力和纤维素内切酶活性；经90℃高温处理30min后，仍能够保持分解能力，105℃处理30min后转接2次就能恢复分解能力，显示出很高的保存稳定性和热稳定性。

This year the company operating the various organic chemical raw materials, varieties are: methanol, ethanol, ethylene glycol, butanol, isobutanol, isopropanol, glacial acetic acid, vinyl acetate, B lipid, Ding acetic acid lipid, styrene, toluene, phthalic anhydride, xylene, acetone, butanone, cyclohexanone, DMF, sulphuric acid, methyl isobutyl ketone, glycol Dingmi, three toluene, 2 Xin fat, melamine.

本公司常年经营各种有机化工原料，品种有：甲醇、乙醇、乙二醇、正丁醇、异丁醇、异丙醇、冰醋酸、醋酸乙烯、醋酸乙脂、醋酸丁脂、苯乙烯、甲苯、苯酐、二甲苯、丙酮、丁酮、环己酮、DMF、硫酸、甲基异丁基酮、乙二醇丁醚、三甲苯、二辛脂、三聚氰胺。

Reaction of citric acid with paraformaldehyde gave anhydromethylene citric acid with a yield of 63%;the reaction of compound with acetic anhydride gave the corresponding anhydride with a yield of 87%;the esterification of compound with lauryl alcohol gave anhydrocitric acid monoester with a yield of 76%.

将等浓度的柠檬酸和多聚甲醛加热，反应生成柠檬酸缩醛环酯，产率为63%；与乙酸酐反应得到相应的柠檬酸酐，产率为87%；与月桂醇酯化，生成产物，产率为76%；用二氧六环做溶剂，将与等浓度的碱进行开环反应，生成柠檬酸月桂醇单酯，产率为83%。

Citric acid lauryl alcohol ester was synthesized by the esterification of citric acid with lauryl alcohol using p methylbenzenesulfonic acid or cation exchange resin as the catalyst.

分别用阳离子交换树脂和对甲苯磺酸催化柠檬酸和月桂醇进行酯化反应，合成了柠檬酸月桂醇酯。考察了催化剂用量、原料配比、反应时间和反应温度等对合成反应的影响，优化了合成工艺条件。

Changes of contents of phenolic compounds (catechin, quercetin, chlorogenic acid, ferulic acid) and indoleacetic acid, and changes of activities of polyphenoloxidase and peroxydase during the cuttings rooting were determined.

蛇足石杉分别扦插于原生境土壤和灭菌土壤上，调查其生根率，测定生根过程中吲哚乙酸、酚类化合物(儿茶酚、槲皮素、绿原酸、阿魏酸)、多酚氧化酶和过氧化物酶活性的变化。

The synthesis process of silica using waterglass and sulpHuric acid as materials was studied systematicly. The results show that reacting temperature, reacting time, sulphuric acid concentration, reactive stiring rate, modulus of waterglass,adding salting agent,alkali concentration,the total volume of acid and alkali added , different methods of adding materials may have influence on the specific surface area or dibutylphthalate absorption number of silica in different degree.

本文系统地研究了以水玻璃溶液和硫酸为原料合成沉淀法白炭黑的工艺，研究发现：反应温度、反应时间、硫酸浓度、反应搅拌速度、水玻璃模数、添加盐析剂、底碱浓度、酸碱加入的总量、加料方式对白炭黑的比表面积或DBP吸收值有不同程度的影响。

You can buy sweetened beverages, if that suits you.

你若喜欢的话，可以买些含有糖精的混合饮料。

As many of you are probably aware, Nick and Vanessa were recently faced with an embarrasing sex scandal after naked pictures of the two getting jiggy with it in a hot tub surfaced the net.

正如很多你可能知道，尼克和 Vanessa 最近面临一个尴尬的绯闻事件后，赤裸裸的图片两个越来越jiggy与它在浴缸中的一个热点浮现净。