查询词典 benzoic

Chemically, propolis is exceedingly complex and contains a rich variety of potent terpenes and benzoic, caffeic, cinnamic, and phenolic acids.

从化学成分分析，蜂胶是极度复杂的并且富含了有效的萜烃，安息香酸，咖啡酸，苯乙烯酸和酚酸。

Benzoic acid and cinnamic acid significantly effected watermelon radicles elongation.

用苯甲酸、肉桂酸处理萌发的西瓜种子能显著影响西瓜幼根的生长。

A HPLC method for determination of sorbic acid,benzoic acid and sodium saccharin in dairy drink was studied.The comparison of five methods of precipitating protein showed that the solution of potassium ferrocyanide and zinc sulfate as protein's precipitant was appropriate.

探讨含乳饮料中山梨酸、苯甲酸、糖精钠的HPLC含量测定方法，在比较5种沉淀样品中蛋白质的方法后，确定以亚铁氰化钾与硫酸锌溶液为沉淀剂，采用C18反相柱，以甲醇：乙酸铵溶液(0.02 mol/L)=15∶85为流动相，紫外230 nm检测，结合保留时间及二极管阵列检测器光谱分析信息定性。

Well-resolved absorption spectra of benzoic acid and its derivatives with one hydrogen atom replaced by a substituent group CH3, OH, NH2 or NO2 were reported in the frequency region between 6 and 67 cm－1 at room temperature with terahertz time-domain spectroscopy.

本文利用太赫兹时域光谱技术获得了295K时苯甲酸，不同位置取代的甲基苯甲酸以及不同取代基对位取代苯甲酸在6至67 cm-1波段的时域光谱。

Results high performance chromatography was established to determine 6 sorts of additives: lemon yellow, amaranth, sunset yellow, benzoic acid, sorbic acid and saccharin sodium; RSD was 2.5%, 0.3%, 0.4%, 0.9%, 1.0% and 1.9% respectively; the recovery rate was 92%~110%.

结果 建立了同时测定柠檬黄、苋菜红、日落黄、苯甲酸、山梨酸和糖精钠6种添加剂的高效液相色谱法RSD分别为2.5%、03%、0.4%、0.9%、1.0%、1.9%；其回收率在92%~110%之间。，并应用于饮料样品的分析。

Folic acid is Vitamin Bc made up of 2-amino-4-hydroxyl-6-methylpterin, para-amino benzoic acid and glutamic acid, transforming into tetrahydro-folic acid in the human body, the ones that participated in formatting amino acid and nucleic acid.

中文摘要：叶酸系由2-氨基-4-羟基-6-甲基蝶呤、对氨基苯甲酸及谷氨酸组成的水溶性B 族维生素，在人体内转化成四氢叶酸，参与氨基酸及核酸的合成。

Eight dominant strains that can effectively degrade acidic material in landfill leachate were selected to investigate their degradation of benzoic acid, phenol, phthalic acid, fatty acids and so on in landfill leachate.

分离筛选能够快速降解垃圾渗滤液中难降解有机酸性物质的优势菌种8株，研究了这8菌株及其混合体对苯甲酸、苯酚、邻苯二甲酸、脂肪酸等以垃圾渗滤液中常见的有机酸性物质的降解特性。

Series of ternary and quadruple doping complexes of europium with benzoic acid ,p-aminobenzoic acid,phthalic acid , m-phthalic acid, and 1,10-phenanthroline were synthesized.

合成了铕与以苯甲酸、对氨基苯甲酸、对硝基苯甲酸、邻苯二甲酸和间苯二甲酸等为第一配体，邻菲咯啉为第二配体的掺杂配合物。

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。

At 80℃, the yield of esterification of benzoic acid with ethanol could reach 95% by using 10% catalyst for 6 h; the conversion of toluene in the nitration with 1 equiv. of 65% nitric acid could be achieved to 99% by using 5% catalyst for 5 h.

在80℃下，摩尔分数为10%的Yb(NTf2)3负载催化剂，反应6h可使苯甲酸乙酯的产率达95%；摩尔分数为5%的Yb(NTf2)3负载催化剂，反应5h可使甲苯与等摩尔质量分数为65%硝酸的硝化反应转化率达99%。

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。