查询词典 acid group

Results show that when acid condition is established, their spectra changes can be obviously observed, when solution is basified, only the compounds hydroxyl group as possible acidic centers show spectra changes.

当外界环境呈现酸性时，化合物光谱变化明显；当外界环境呈现碱性时，除引进了潜在酸性中心的化合物呈现微弱敏感外，其他化合物光谱无明显变化。

A process as claimed in claim 1 wherein the metal chelating group are acid groups.

一个进程根据权利要求1声称其中的金属螯合组的基团。

Alternatively the metal chelating group can be present in the carrier vehicle as a long chain fatty acid.

另外的金属螯合组可以存在于一个长链脂肪酸承运人车辆。

This year, his group showed that EDR1's role is to weaken a plant alarm signal called salicylic acid, a close chemical relative of aspirin that is produced by cells in diseased parts of the plant and orchestrates the plant's defences against the infection.

今年，他的小组显示，edr1的作用在于削弱一种称为水杨酸的植物预警信号，水杨酸是阿斯匹林的化学近亲，由植物罹病部位的细胞分泌，负责组织植物抵抗感染。

The results showed that Kaidimycin was chemically neutral, macrocylic polylactones, stable and liable to dissolve into water and pyridine, slight to dissolve into methanol, ethanol and N-butanol, difficult to dissolve into ethyl acetate, acetone, benzene and chloroform. Chemical reaction of functional group of Kaidimycin showed that it had glycoside, amino acid and aldehyde, no reducing sugar, polypeptide and phenol.

凯地菌素属中等极性的、中性抗生素，极性纸层析结果与多烯类抗生素的纸层析结果相似：易溶于水、吡啶，微溶于甲醇、乙醇、正丁醇，不溶于乙酸乙酯、丙酮、苯、三氯化碳；对高温、光照和紫外处理有很好的稳定性；官能团反应试验结果发现，凯地菌素可能含有糖苷键、氨基酸伯氨基和醛基，不含有还原糖、多肽和酚基，高锰酸钾、浓硫酸反应与多烯大环内酯类抗生素的特性相似；并且依据纯品，采用生物法和分光光度法对摇床发酵液进行了效价的测定。

In these several years, the company has cooperated with German Lurgi and Nanjing Chermical Industrial Group Design Institute to develop the series of products of waste heat boiler of sulfuric acid made of pyrites. This product and blowing air waste heat boiler are selected as Specially-designated Products. Regarding the cement kiln low temperature waste heat recovery, the company has fully introduced and digested advanced domestic and foreign technologies and has achieved great success. The company has marched into metallurgical industry in 2004, established cooperation with numerous large scale metallurgical institutes and successful developed series of products of waste heat boilers in metallurgical industry, especially sinter cooler low temperature waste gas residual heat power generation boiler. It has successively developed the products such as converter waste heat boiler, electric furnace waste boiler etc.

近几年，公司与德国鲁奇、南化设计院合作研制开发了硫铁矿制酸余热锅炉系列产品，该产品与吹风气余热锅炉被《化工工程建设标准》选为定点产品；在建材行业水泥窑低温余热回收上，充分引进消化国内外先进技术，并取得骄人成绩，2004年进军冶金行业，与国内众多大型冶金院建立了合作，成功开发了冶金行业余热锅炉系列产品，特别是烧结冷却机低温废气余热发电锅炉，又相继开发了转炉余热锅炉、电炉余热锅炉等产品。

The surfactant contains quaternary ammonium group; b, the surfactant is a complex macromolecule which takes the yellow humic acid as the main body , has no fixed compounds and can be degraded in nature.

含有季铵盐基团；b。以黄腐植酸为主体，是一种复杂的有机大分子，没有固定的组成，在自然界中就可以分解。

We have synthesized 4,4'-dinitro-3 4''-dimethyl triphenylamine,(1), in 84% yield in an one-step condensation process between 3,4-dimethyl aniline and 4-fluoro-nitrobenzene. After the auto-oxidation of (1) and the subsequent hydrogenation of the nitro-groups, an AB2 type triphenylamine polyimide intermediate bearing two amine groups and one acid-anhydride group each on individual phenyl ring,{AB2 PI Intermediate}, was prepared successfully. The yields of the autoxidation and the hydrogenation steps are 81% and 90% respectively.

中文摘要本研究以3，4-二甲苯胺及4-氟硝基苯为原料，经一步骤缩合反应得到产率为84 %之4，4'-二硝基-3&，4&-二甲基三苯胺(1)，由(1)经自氧化法后再以氢化法还原硝基，成功地制备出带有二胺基与一羧基的三官能基之AB2型三苯胺中间体(AB2型PI中间体)，自氧化反应与氢化法的产率各为81%及90%。

The n-3 fatty acids group was fed with 20% replacement of saturated fatty acid by C18∶2 in bean oil instead of ...

因此，我们推测将能诱发胰岛素抵抗的饱和脂肪酸的一部分热量，由饮食

The results indicated that Eu3+ mainly interacts with the carbonyl oxygen in the amino acid residues of the peptide chain of CAT because rare earth ions are easy to coordinate with O, causing the change in the peptide conformation and in turn the change in the structure of the heme group of CAT.

结果表明，由于稀土离子易与O键合，因此，Eu3+主要与CAT肽链上的氨基酸残基中的羰基氧配位，引起肽链构象的变化，而构象的变化又会诱导CAT中的血红素结构的变化。

By the time of its fall, most of the prisoners were writers who had written against the corruptions of the government.

到它被攻陷的时候，里面多数的犯人是写了反对政府贪污文章的作家。

The most obvious variation to ovum morphological character was that the color was changed from light green to sepiaceous in embryonic development, and all the ovums were almost hatched after 96h.

在胚胎发育过程中卵的形态特征最明显的变化是颜色从淡绿到深褐色，卵在发育96h后卵基本全部孵化。