酚羟基化合物往往具有清除O-·2 作用。
The phenolic hydroxyl compounds usually have activity scavenging O -· 2.
含酚羟基化合物的抗氧化活性与其结构密切相关。
The AA of phenolic compounds is correlated to their chemical structures.
色氨酸合成酶的酶的活性增强，加入多羟基化合物。
The enzymatic activity of tryptophan synthase was enhanced by adding polyhydroxy compounds.
双甘油是两分子甘油由一个醚键联接构成的多羟基化合物。
Diglycerin is a polyol consisting of two molecules of glycerol bonded by an ether linkage.
用多羟基化合物作成胶剂与交联剂BF配制了选择性堵水剂。
A selective plugging agent was prepared from polyhydroxy - compound as gelling material and cross -linking agent BF.
聚胺酯泡沫通过多羟基化合物上的羟基和二异氰酸酯反应形成。
The foam was prepared through a reaction of the hydroxyl groups with diisocyanate.
它是由有机二异氰酸酯或多异氰酸酯与二羟基或多羟基化合物加聚而成。
It is made of organic diisocyanate or polyisocyanate with two hydroxyl groups or polyhydroxy compounds together with.
手性氨基-羟基化合物是一类用于催化不对称合成和手性辅助合成的重要配体。
Chiral amino-hydroxy compounds have been proved to be a very efficient class of ligands in a variety of catalytic asymmetric syntheses and chiral auxiliary synthesis catalyzed by metallic ions.
正如第1章解释，聚氨酯组是羟基化合物与异氰酸酯组的反应(反应4.8)的产品。
As explained in Chapter 1, the urethane group is the product of the reaction of a hydroxy compound with an isocyanate group (reaction 4.8).
通过环氧丙烯酸树脂和双羟基化合物反应，获得具有亲水性链段的水性环氧丙烯酸酯。
The epoxy acrylates oligomer with hydrophilic links and end waterborne modified-epoxy acrylates resin was prepared.
在硫酸的催化作用下，竹废料在由聚醚多元醇和粗甘油组成的混合液化剂中可被液化成多羟基化合物。
The bamboo residues could be liquefied to be biopolyol in the mixed solvent of polyether alcohol and crude glycerol under the catalysis of concentrated sulfuric acid.
多羟基聚合物防塌剂CXC-1是以环氧化物及多羟基化合物共聚而成的聚合物防塌剂，为淡黄色黏稠液体。
Multi-hydroxyl polymer, CXC-1, as an anti-sloughing agent for water base drilling fluids, is a yellowish liquid and is prepared by polymerization of alkylene oxides and polyhydroxylated compounds.
介绍了一种利用阳离子化改性多羟基化合物进行堵水调剖的方法，具有一定的选择性，在油田应用取得了良好效果。
A modified cationic polyhydroxy compound gelling fluid as water shutoff is developed. This type of gel has better selectivity. Its field tests are described and the results are satisfactory.
海水中的铀与吸附剂都是溶剂化的，二者接近以后，逐步共用一部分液膜，吸附剂上的羟基与带负电荷的铀质点结合成表面羟基化合物。
Both uranium and the adsorbent are solvated in seawater. They gradually share a part of their liquid membrane when coming into contact forming a surface hydroxyl compound, thus lowering the ?
这些化合物能溶于水，并含有游离的半缩醛羟基，所以在碱溶液中能还原银离子和铜离子。
These compounds are soluble in water, and contains the hemiacetal hydroxyl free, so in alkaline solution can reduce silver ions and copper ions.
碳水化合物碳水化合物通常的定义是多羟基的醛和酮或者水解产生多羟基的醛和酮的物质。
Carbohydrates carbohydrates are usually defined as polyhydroxy aldehydes and ketones or substances that hydrolyze to yield polyhydroxy aldehydes and ketones.
结果发现：一羟基或羧基化合物能提高氟橡胶混炼胶的防焦烧性，并对压缩永久变形和拉伸强度等有一定的改善。
The results showed that the compound could improve the scorch safety the compression set and the tensile strength of fluororubber compound.
羧酸中的羟基被氨基取代后，生成的化合物，也可看作是氨的氢被酰基取代的衍生物。
The hydroxyl amino acid has been replaced, the resulting compounds can also be regarded as ammonia hydrogen has been replaced by acyl derivatives.
此外，它除了还原双键以外可以用来还原各种不同的有机化合物，如：硝基、羰基、氨基、芳香族及杂环化合物、羟基、羧基。
Moreover, catalytic hydrogenation can be used to the reduction of a variety of organic compounds, such as nitro, carbonyl, amino, aromatic and heteroaromatic compound, hydroxy group and carboxy group.
烯醇一种有机化合物，包含有与碳原子键连的羟基群，该碳原子反过来又与另一个碳原子双键连接。
An organic compound containing a hydroxyl group bonded to a carbon atom, which in turn is doubly bonded to another carbon atom.
以含硫化合物还原红曲色素，红斑素和红曲红素分子中的环羰基还原成羟基，得到水溶性红白曲黄色素。
The water soluble Monascus yellow pigment was prepared by reducing the cyclocarbonyl of monascorubrin and rubropunctatin to hydroxyl with sulphuric compounds.
添加有配位倾向的含羟基的化合物会加快破胶过程。
Addition of the compounds with hydroxyl groups and a tendency of coordination will accelerate the degradation.
结果发现：一羟基或羧基化合物能提高氟橡胶混炼胶的防焦烧性，并对压缩永久变形和拉伸强度等有一定的改善。
The results showed that the compound could improve the scorch safety, the compression set and the tensile strength of fluororubber compound.
研究甲胺磷(map)的水解等反应的生成物亚硝酸与8羟基喹啉合成的偶氮化合物的极谱行为。
The polarographic behaviour of an azo compound produced by the reaction of Methy amine phosphorus (MAP) with 8 hydroxyquinoline (Oxin), in the ammonia medium has been studied.
从云南烤烟中提取分离得到了一个多羟基吡嗪化合物1，采用IR、MS和NMR进行了鉴定。
The compound 1, polyhydroxyyrazine, was extracted from Yunnan flue-cured tobacco and identified by IR, MS and NMR.
表面的类脂物氧化后，产生许多化合物，包括羟基和羰基化合物。
The surface lipids undergo oxidation, generating many compounds containing hydroxyl and carbonyl groups.
表面的类脂物氧化后，产生许多化合物，包括羟基和羰基化合物。
The surface lipids undergo oxidation generating many compounds containing... hydroxyl and carbonyl groups.
合成法主要是以非植酸化合物为原料（如六羟基苯、淀粉等）通过化学反应制得。
In synthesis method, the non-phytic acids such as hexahydroxy-benzene and starch are passed through chemical reactions to produce phytic acid.
所述工作流体包含纯水和含有羟基的有机化合物。
The working fluid includes pure water and an organic compound bearing a hydroxyl group.
所述工作流体包含纯水和含有羟基的有机化合物。
The working fluid includes pure water and an organic compound bearing a hydroxyl group.
应用推荐