查询词典 hydroxy-ketone

Two types of three-arm or four-arm star-shaped hydroxy-terminated PCL weresynthesized via the ring-opening polymerization of CL with multifunctional initiator and 〓catalyst.

以多元醇(季戊四醇或2，2-羟甲基丁醇)为引发剂、〓为催化剂，引发CL单体的聚合，合成了端羟基化的三臂或四臂星型PCL聚合物。

Two types of three-arm or four-arm star-shapedPCL-b-D,L-PLGA50 copolymer with high molecular weight and narrow molecularweight distribution were synthesized via the block copolymerization of MG monomerwith star-shaped hydroxy-terminated PCL as macroinitiator and 〓 as catalyst.

以端羟基化的三臂或四臂星型PCL聚合物为大分子引发剂、〓为催化剂，引发MG单体的嵌段共聚合，合成了高分子量和窄分子量分布的三臂或四臂星型PCL-b-D，L-PLGA50共聚物。

Oxidation of 3-hydroxy-4(1H)-quinolinones by silver oxide gave four oxidation products of 3,4-quinolinediones.

用氧化银氧化3-羟基-4(1H)-喹哪啶酮类，得到了4种3，4-喹哪啶二酮类化合物。

But in fermented juice, the most of volatile components is esters, about 74.92%, the propanoic acid, 2-hydroxy-, butyl ester is 64.36%.

而在诺丽鲜果中脂肪酸是主要的挥发性成分，占总挥发性成分43.34%，十八烯酸就占了20.34%；在诺丽发酵汁中主要的挥发性成分是酯类，占了总挥发性成分的74.92%，而2-羟基丙酸丁酯就占了64.36％。

Si added significantly alleviated the toxicity symptom of Cd in rice seedlings grown hydroponically. Si dramatically reduced the transport of Cd from roots to shoots.

质外体荧光示踪剂PTS(tri-sodium-8-hydroxy-1，3，6-pyrenesulphonate)的测定结果表明加硅可以显著降低质外体途径的运输量。

When the compounding ratio of aliphatic resin, aromatic resin, unsaturated hydroxy acid ester, and metallic soap blends was 3:3:1:3, the homogenizing-dispersing agent THD was produced.

结果表明，当脂肪烃树脂、芳香烃树脂、不饱和醇酸酯及皂类混合物之间配比为3：3：1：3时制得的均匀分散剂THD可以改善胶料混合的均匀性，提高炭黑的分散效果，并且节约混炼能耗，增加了胶料的耐老化性能，对硫化胶的力学性能影响不大。

During past 2 years, we produced milkly white fused quartz tubing, non-ozone quartz tubing, UV stop quartz glass tubing, sunshine quartz tubing on the basis of common quartz tubing, they are widely used in electric industry, electric lamp-house, chemical, nuclear industry, etc, and won users'trust and favorable comments .Our co. also holds advanced full analyse and finished product and detect system. The 2 sets of infrared photometers have being used in the process of producing, and control effectively the content of hydroxy in the quartz products.

公司成立两年多来，在生产普通石英管的基础上，相继推出乳白石英管、无臭氧石英管、滤紫外线石英管、以及太阳光石英管等，广泛用于电子工业、电光源、化学、核工业等领域，深受用户的信赖和好评。

This research utilized the method of organic synthesis, researching different amounts and positions of hydroxy-substituted benzoic acid and serotonin into amide reaction, so as to produce a series of polyhydroxy substituted N-benzoylserotonin derivatives (compound 1-10). Accordingly, this study conducts the following four tests. I. The activity of antioxidant and the experiment of ability to scavenge DPPH free radical, II. The ability of overall antioxidant—the activity of TEAC, III. The activity test of inhibit Tyrosinase, and IV. The study of absorbing UV / VIS Spectrophotometers. This study use trolox, arbutin, and octyl salicylate as the control groups, and to test the ability of anti-oxidation, the activity of inhibit Tyrosinase, and the ability of absorbing UV. This research ultimately intends to investigate the applied value of those compounds into cosmetics.

本研究主要利用有机合成的方法，将不同数量及不同位置的羟基取代苯甲酸化合物与色洛冬宁进行醯胺化反应后，得到一系列的多羟基取代之N-色洛冬宁苯甲醯胺衍生物（化合物1 ~ 10），进行四种不同活性测试方法：一、清除DPPH自由基能力抗氧化活性测试；二、总抗氧化能力活性测试；三、抑制酪胺酸酶活性美白测试；四、紫外线／可见光光谱仪吸收测试，并以水溶性维生素E、熊果素、水杨酸辛酯当作对照组，探讨其抗氧化能力、抑制酪胺酸酶的活性能力与吸收紫外线能力，再进一步探讨其应用於化妆品上的价值。

Infrared, ultraviolet, and mass spectrometry Gaoxiaoyexiang tests showed that benzene p rosin in neighbouring seats husband alkali metal objects with catalytic, the oxide containing hydroxy generated, ethylene, or a functional group, such as the Food oxide product.

红外、紫外、高效液相色谱和质谱测试表明，松香在邻苯二胺席夫碱金属配合物的催化下，氧化生成了含羟基、环氧基、过氧基等官能团的氧化产物。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。