查询词典 acid reaction

Its extraction, stability and the reaction with amino acid were studied.

结果表明，用板层析方法可分离、制备较纯的橙色素。

The calcium ion was assumed the representative ion in hydration products and the chemical dynamics model was established which describes the chemical reaction between hydration products in solidification sludge and acid.

2将水化产物中的钙离子作为代表性离子，建立了固化污泥中水化产物和酸反应的化学动力学模型；采用生物反应器强化微生物活性建立了固化污泥中机物降解的动力学模型。

The effect of reaction temperature, time, water volume, oxidant, acetic acid, ethanol, and sodium carbonate on the yield of reducing sugar were investigated.

在亚临界水的状态下对稻壳和麦麸进行水热糖化实验，考察了反应温度、反应时间、加入水的体积以及氧化剂、醋酸、乙醇、碳酸钠等对还原糖产率的影响。

The increase of glucose concentration is beneficial for anaerobic degradation of Acid Mordant Dark Yellow GG,the anaerobic removal efficiencies were 81.5% and 93.5% with reaction for 12 or 60 hours at 40 mg/L of dye respectively.

葡萄糖浓度的升高对提高酸性媒介黄GG厌氧生物降解率有利，当葡萄糖浓度为2000 mg/L时，40mg/L酸性媒介黄GG的12和60 h厌氧生物降解率分别达到81.5%和93.5%。

The 1,3-2,4-di (3,4-dimethylbenzy-lidene) xylitol was synthesized by means of aldol condensation reaction with xylitol and (3,4-dimethyl) benzaldehyde as raw materials and paratoluenesulfonic acid as catalyst.

以木糖醇和3，4-二甲基苯甲醛为原料，在酸催化下进行醇醛缩合反应，合成了1，3-2，4-二（3，4-二甲基）苄叉木糖醇。

Bromo-2-sulfolene (2) reacted with substituted benzoic acid salt s 3a～3c or alizarin yellow (3d) to give four novel allylic substitution products 4a～4d by esterification reaction, respectively.

以3，4-二溴环戊砜(1)为原料，在无水吡啶作用下发生消除反应，得到反应中间体4-溴-2-环戊烯砜(2)，再分别与一系列取代苯甲酸盐3a～3c以及茜素黄GG(3d)发生酯化反应，合成出4种新环戊烯砜衍生物4a～4d，并用IR，1HNMR，MS，元素分析等表征了它们的结构。

The initial pH of reaction solution had little influence to the degradationefficiency, but in alkali solution, methylene blue degraded easier than in acid or neutral solution.

亚甲基蓝降解率随超声时间的增加而增加；溶液的pH值的变化对亚甲基蓝降解的影响不大，但是在中性溶液中，其降解率稍高于酸性或碱性溶液中。

The optimum conditions were found to be: 4.5 g of stearic acid, 75 mL of carrier solvent (having a volume ratio of ethanol to cyclohexane of 1:9), 5 g of alkaline Ca-bentonite, and a reaction time of 1.5 h.

结果表明，获得有机烧失量为36.25%产品的最佳制备工艺条件为：硬脂酸4.50g，分散剂75 mL（乙醇与环己烷的体积比为1：9），碱性土5.00g，反应时间1.5h。

The dissociation reaction of the ammonia/ammonium weak acid/base is represented by the above two half reactions and both kinetic equations are included in the model as separate processes.

上面的两个半反应表示了氨/铵的弱酸/碱分解反应，在这个模型中两个动力论方程都被当作独立的过程。

The amount of bacteria in cuhure was detected, the concentration of ammonium oxalate was detected through photometric determination of oxalic acid by its catalytic reaction of methyl red by potassium chromate.

经过72h培养，所有培养基中的草酸浓度都有不同程度的下降，但乳酸菌组的降幅明显大于对照组，其中嗜酸乳杆菌组的降幅最大。

We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.

索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称；三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起，称之为挽歌体诗人或者史诗诗人，他们被称为诗人，似乎只是因为遵守格律写作，而非他们作品的模仿本质。

The relationship between communicative competence and grammar teaching should be that of the ends and the means.

交际能力和语法的关系应该是目标与途径的关系。