查询词典 optimum conditions

Optimum conditions for the developmentof colouration, wavelength of maximum absorption, Beer's law foroptimal concentration range as well as applications of the methodsare listed in tables for each method.

文中综合了51篇文献中报导的37种方法，并用表列出每种方法的显色介质、最大吸收波长、适宜浓度范围及分析对象。

The optimum conditions of acyl chlorination and esterification were investigated as follows: molar ratio of DPR to PCl3 1∶0.33, reaction temperature 50℃ and reaction time 3 h.

实验结果表明：温度对于DPR酰氯化反应的影响较小；而原料物质的量之比对反应程度的影响较大，PCl3用量的增加有利于反应程度的增加。

With corn embryo being coproduct in corn starch production as material, glutathione was extracted through hot water extraction after supercritical CO2 fluid extraction and ultrasound wave treatment. The results showed that The optimum conditions of hot water extraction are solid; liquid 1:15, temperature 90 ℃, pH3.0, time is 15 min. On these conditions GSH yield is 97 mg/100 g corn embryo.

以淀粉加工副产物玉米胚为原料，经过超临界流体萃取脱脂及超声波破壁处理后，采用热水浸提法提取谷胱甘肽，最佳热水浸提工艺条件为固液比1：15 g/mL、浸提温度90℃、浸提液pH3.0、浸提时间15 min，在此条件下谷胱甘肽提取量为97 mg/100g玉米胚。

Based on phase diagram principle, magnesium sulfate monohydrate and sodium chloride were prepared by mother liquid of sodium sulfate and magnesium chloride hexahydrate, the process conditions also were optimized. The optimum conditions were 10% excess mother liquid of sodium sulfate, 55℃ reaction temperature, 100℃ evaporation temperature and 1.326g/cm^3 end concentration of evaporation.

利用元明粉母液和六水氯化镁为原料，根据相图原理反应生产一水硫酸镁和氯化钠，对其工艺条件进行了实验优化，确定了最佳工艺条件：配料时，元明粉母液过量10%；反应温度确定为55℃；蒸发温度100℃；蒸发溶液终点比重为1.326g/立方公分。

This paper studied the synthesis process conditions of softener A-C, and found their optimum conditions.

本文对柔软剂A-C的合成工艺条件进行了探索和优化。

By studying the factors that affect the purities of products and recoveries of isoflavones, we got the optimum conditions for desorption: 70℃, eluting solvent sequence: water 3.0 BV, 75% ethanol 5.0 BV, flow-rate 2.5 mL·min~(-1). Under these conditions, the content of isoflavones in the product was 56.0% with the recovery of 89.3%. The content of isoflavones in the product was ten times larger than in the initial material.

异黄酮的解吸，以异黄酮产品的含量及异黄酮回收率为指标，对解吸溶剂浓度、温度等因素进行考察，确定采用水、体积分数75％乙醇溶液在70℃下依次洗脱，收集醇洗脱液可得到大豆异黄酮含量达56.0％的产品，含量比原料提高了十几倍，异黄酮回收率也较高，达到了89.3％。

The optimum conditions of synthesize RNB had been accomplished by the methods of factor analysis. And the best conditions were as following: alcohol as solvent, sodium carbonate as acid absorbing agent, refluxing for 8h.

通过因素分析确定了合成RNB的最优化条件为：以乙醇为溶剂，Na_2CO_3为缚酸剂回流反应8h。

The optimum conditions were as follows: 1 Fe3+/Fe2+ was 1.70-1.75;2 the precipitant,25% ammonia water was used 20%-30%,under 35℃,pH10-11 and with a stirrer speed of 3000 r/min for 1 h;3 in the first package process with gelatin and agar,the optimum amounts was 0.050-0.060g/150mL at the temperature of 55-60℃ and pH of 9-11;In the f...

最佳工艺条件为：(1)Fe3+/Fe2+之比在1.70~1.75；(2)沉淀剂25%NH3.H2O过量20%~30%，温度35℃，pH值11，反应时间为1h；(3)琼脂的最佳用量为0.050~0.060g/150mL；包覆的最佳温度为50~60℃，pH值为9~11；聚乙二醇作为第二次包裹剂时，最佳温度为55℃，反应时间是1h，pH值为4~5；并用透射电镜、分光光度计、古埃磁天平等进行了初步表征。

The experimental results show that the optimum conditions were as follows: molar ratio of pentaerythritol to phosphorus trichloride to bisphenol A was 1.0:2.8:2.0, the first and the second reaction held for about 3 h on the conditions of refluxing.

试验结果表明：反应溶剂为苯，用量为50 mL；物料配比〔m：m：m〕为1.0：2.8：2.0；第一步和第二步均回流反应3h。

The optimum conditions for this reaction were confirmed: the mole ratios of the Lewis base and AlCl〓 with the electron-rich aromatic monomer are 1. 2 and 3. 4, respectively; 1, 2-dichloride ethane is the most suitable solvent in this reaction; The solution of the two reactants must be added slowly to a large amount of solvent containing catalyst under pseudo-high dilution conditions; The Lewis base, such as NMP, DMF are applicable in this reaction system.

在此理论的指导下，通过对单体结构的模拟，高选择性地合成了一种新型结构的芳香环状聚硫酯二聚体，对其结构进行了精确的表征，在不同溶剂中得到了该环状二聚体的单晶，单晶X-ray衍射表明该二聚体为环张力极小的大环化合物。

They weren't aggressive, but I yelled and threw a rock in their direction to get them off the trail and away from me, just in case.

他们没有侵略性，但我大喊，并在他们的方向扔石头让他们过的线索，远离我，以防万一。

In slot 2 in your bag put wrapping paper, quantity does not matter in this case.

在你的书包里槽2把包装纸、数量无关紧要。