查询词典 optimum conditions

The yield of keto isophorone was over 94% under optimum conditions.

研究了以β-异佛尔酮为原料，在催化剂存在下，用分子氧氧化制备酮代异佛尔酮的合成工艺。

The optimum conditions are: molar ratio of glycol to cyclohexanone is 1.6:1, the quantity of catalyst is equal to 0.25% of feed stocks, and the reaction time is 40 mm. H3PW12O40/MCM-48 is an excellent catalyst for synthesizing cyclohexanone ethylene ketal and its yield can reach over 80.63%.

实验表明：H3PW12O40/MCM-48是合成环己酮乙二醇缩酮的良好催化剂，在n：n＝1：1.6，催化剂用量为反应物料总质量的0.25%，环己烷为带水剂，反应时间40min的优化条件下，环己酮乙二醇缩酮的收率可达80.63%。

Under the optimum conditions, the liner range is 0 to 200 mg/L for BSA and 0 to 125 mg/L for HSA, the molar absorptivity is 1.61×10^5 Lmol^(-1)cm^(-1) for bovine serum albumin and 1.75×10^5 Lmol^(-1)cm^(-1) for human serum albumin. Based on this, a new method is proposed to determine protein. After the method is applied in the determination of the total proteins in real human serum samples, the results are in good agreement with the Kjeldahl method.

在确定的最佳试验条件下，BSA浓度在0~200 mg/L、HSA在0~125 mg/L范围内符合比尔定律，对BSA和HSA的摩尔吸光系数ε567分别为1.61×10^5和1.75×10^5Lmol^(-1)cm^(-1)，据此建立了一种测定蛋白质的新方法，用于人血清样品中总蛋白的测定，结果与凯氏定氮法基本一致。

In Huaihua than in the old leaves, and the content was the least in stem. Conclusion: The optimum conditions for extracting total flavonoids from Lithocarpus polystachyus Rehd. were material to 70% ethanol concentration ratio 1:35, ultrasonic power 540W, and extraction time15 min.

以原料35倍量的70%乙醇作为溶剂，在提取功率600W、提取时间15min的条件下，即可获得多穗柯总黄酮最佳提取效果；8~10月采摘嫩叶存放时间越短，总黄酮含量越高。

The optimum conditions for making microspheres were obtained via orthogonal experiment with adsorptive capacity as the index as follows: the mass fraction of water phase is 2%(ratio between starch and β-cyclodextrin is 1:2), 110 mL oil, 3.3 g Span60, 6.6 g Tween60, 15 mL water, 18 mL assistant surfactant, 0.07 g metaphosphoric acid trisodium salt. The microspheres were characterized by microscope and the average particle size is about 329.3 nm with productive rate of 41%.

结果表明，质量分数为2%的可溶性淀粉与β-环糊精溶液为水相（二者的质量比为1：2），油相用量为110 mL，水相用量为15 mL，乳化剂Span60用量为3.3 g，Tween60用量为6.6 g，助乳化剂用量为18 mL，三偏磷酸钠用量为0.07 g，制备得到的复合纳米微球在扫描电子显微镜下，微球大小分布均匀，所得纳米微球产率为41%，平均粒径为329.3 nm。

We analyzed primary test factor through multi-element linear regression model. We finally concluded the optimum conditions for tapioca starch micronization.

利用多元线性回归进行方差分析，分析了试验因素对回归方程的影响效应，最后得出优化的木薯淀粉微细化处理条件。

The optimum conditions of reaction of each reaction:(1) The synthesis condition of PS with monocarboxylic acid terminated is that the mole ratio reatant of FeCl2·4H2O/chloroactic acid was 2.0, the reaction temperature 110℃, the reaction time

各步的最佳聚合反应条件：(1)mPEG与丁二酸酐反应最佳条件：溶剂为甲苯

The studies showed that the optimum conditions of the reaction were the amount of the 75% gathers the phosphoric acid 30 mL,the mole ratio ofhexamethylene tetramine to nitrophenol was 2∶1,the reaction time was about 3.0 hours,the reaction temperature was about 105℃.

结果表明较佳反应条件是：在对硝基苯酚为3.5 g的情况下，75%的多聚磷酸用量为30 mL，n∶n=2∶1，反应时间为3.0 h，反应温度105℃，5-硝基水杨醛的产率可达68.1%。

The effects of several important factors, such as nonaqueous solvents, running buffer system and its concentration and pH, separation voltage, temperature and detection wavelength, were investigated to acquire the optimum conditions.

分别考察了非水溶剂、缓冲液体系及其浓度和pH、运行电压、运行温度和检测波长等条件对实验结果的影响。

A new fluorescence quenched method has been found for determination of trace of gold based on the formation of nonfluorescent ternary complex Au- TBT -APDC.The composition ratio of Au to ligandi is 1:2:2.Under the optimum conditions,the linear range of the calibration curve is from 0 to 160ng Au/ml.

本文研究了在聚乙烯醇存在下，金与曙红、吡咯啶二硫代氨基甲酸形成三元络合物的合宜条件，并据此建立了水相荧光熄灭测定痕量金的新方法。

Plunder melds and run with this jewel!

掠夺melds和运行与此宝石！

My dream is to be a crazy growing tree and extend at the edge between the city and the forest.

此刻，也许正是在通往天国的路上，我体验着这白色的晕旋。