查询词典 optimum conditions

The results from the study on the decoloring conditions of strain 3# showed that the pH range for decoloring reaction was 5～11 with 6 ～7 being the optimum, the temperature range was 10～30℃ with 30℃ being efficiency optimal. The decoloring efficiency was higher under the presence of oxygen than that lack of oxygen. Strain 3# could more strongly decolor malachite green under optimum conditions. The decoloring rate was above 50%, 70% and 90% in 4, 12 and 24 h treatment, respectively.

对3#菌株的脱色反应条件进行初步研究表明，3#细菌的脱色反应的pH为5～11，最佳范围pH 6～7；温度10～30℃，最佳温度30℃；有氧气情况下的脱色效果较缺氧情况下好；在最佳条件下该菌对孔雀绿染料的脱色作用较强，处理4、12、24 h后，色度去除率分别达到50%以上、70%以上和90%以上。

The results showed that the optimum enzymatic conditions were: choosing papain, with substrate concentration 16%, enzyme concentration 4000U/g, hydrolysis time 6h, and the optimum conditions for the enzymatic hydrolysate of porcine blood to synthesize nitrosyl heme-polypeptide were: NaNO2 added 1.6%, pH5.00 and reaction time to 12min at 55℃.

试验表明，以选用木瓜蛋白酶效果较好，最佳酶解条件为：底物浓度16%，加酶量4000U/g，水解时间6h；酶解液合成色素最佳参数为：pH5.00，反应时间12min ，反应温度为55℃，NaNO2 的添加量为1.6%。

The optimum conditions for extraction was proved practicable by condition filtration and orthogonal design with supersonic wave method .The results showed that the optimum conditions for extraction to ultrasonic method is : methanol (φ=40,20ml),and 15℃ for 30 min ,this paper has determined nicotine contents that is 23.50mg/g at absorption peak (λ=262nm) by HPLC with an eluent consisting of methanol –potass Phosphate alleciate (pH=3) with the recovery and coefficient of variation are 101.52% and 0.91%.

通过超声波提取方法进行条件筛选和正交化实验，确定了烟草中尼古丁的最佳提取条件，结果表明，超声波最佳条件是：甲醇浓度40%，固液比1：20，提取时间30 分钟，超声温度15℃，用高效液相色谱方法在波长262nm 处测定尼古丁的含量，流动相组成为甲醇：磷酸二氢钾缓冲溶液=10：90，测得烟草中尼古丁的含量为23.50 mg/g，平均回收率为101.52%，相对偏差为0.91%。

On the basis of the previous results and according to the central composite experimental design principles,the method of response surface method with 3 factors and 3 levels was adopted.then the factors influencing the technological parameters were determined by means of regression analysis.response surface and contour were finally graphed with the extraction rate as the response value.resultsthe optimum conditions of lycium barbarum polysaccharides extraction were as follows:the ratio of material to solvent of 1∶32,extraction temperature of 84℃ and extraction time of 2.3 h,one time extraction.conclusionthe yield of lycium barbarum polysaccharides is 11.10% under the optimum conditions.

方法在单因素实验基础上选取实验因素与水平，根据中心组合（box-benhnken）实验设计原理采用3因素水平的响应面分析法，依据回归分析确定各工艺条件的影响因子，以多糖提取率为响应值作响应面和等高线。结果在分析各个因素的显著性和交互作用后，得出枸杞多糖水浸提的最佳工艺条件为：料液比1∶32；浸提温度84℃；浸提时间2.3h；浸提1次。结论在最佳工艺条件下，枸杞多糖的实际提取率可达11.10%。

The results showed that when the concentration of surfactant and metal ions (Cd2+) in the feed solution were 500 mg·L-1 and 10 mg·L-1,optimum conditions were air and liquid flow rates 100 L·h-1 and 5 L·h-1, liquid-and vapor-phase heights 45 cm and 66 cm,respectively,sparger (pore size 10 μm). Under the optimum conditions,the about 52% SDS and 99.35% Cd2+ were removed.

实验结果表明，当胶团强化超滤废水中初始SDS和Cd2+的浓度为1440 mg·L-1和50 mg·L-1时，排出的渗透液中含SDS和Cd2+浓度分别为500 mg·L-1和10 mg·L-1，在最佳的工艺条件下（曝气头孔径为10μm，空气流速为100L·h-1，液体流速为5L·h-1，泡沫高度为66cm，液面高度为45cm），SDS和Cd2+的去除率分别达52%和99.35%，SDS富集比为3.1。

The optimum initial substrate concentration for cultivation of inoculum was 8%.The optimum conditions for batch fermentation were 0.04vvm of air flow,5.8 of pH value.The fed-batch fermentation showed that the productivity of Klebsiella pneumoniae CICC 10011 was better than K.pneumoniae CGMCC 1206.The maximum concentration of 2,3-butanediol and acetoin was 103.38 g/L (90.98 g/L of 2,3-butanediol),and the yield reached 82.2%of its theoretical value.The fermentation conditions for K.pneumoniae.

确定种子培养的最适初始底物浓度为8%；间歇发酵的条件为：微氧发酵，通气量为0.04vvm，pH值为5.8；通过批式流加发酵实验表明：Klebsiella pneumoniae CICC 10011的代谢产2，3-丁二醇能力要远高于K.pneumoniaeCGMCC 1206，2，3-丁二醇最高浓度达90.98g/L，2，3-丁二醇与乙偶姻浓度之和最高达103.38g/L，转化率为理论最大值的82.2%，其发酵工艺还有待于进一步优化。

The effects of reaction time, temperature, alkalic degree and the feed ratio on the hydrolysis reaction were investigated by means of the orthogonal design method. And the optimum operating conditions were got. Polyacrylate sodium was prepared under the optimum conditions.

利用正交设计，讨论了反应时间、温度、碱浓度、投料比等因素对水解反应的影响，获得了优化的水解反应条件，并在最优化的条件下制得聚丙烯酸钠。

The results show that the optimum conditions are: the mole ratio of malonic acid to benzaldehyde 1.0:0.9, the dosage of proline 4.0% of the weight of malonic acid and the reaction time 4h, the yield of cinuamic acid is 99.0% under the optimum conditions.

实验结果表明，合成肉桂酸的最合适条件：原料比为1.0：0.9，L-脯氨酸用量为丙二酸质量的4.0%，反应时间4h，在此最佳条件下，肉桂酸的收率达到99.0%。

The optimum conditions were achieved and demonstrated as follows: ethanol solution (volume fraction as 60 %) as extraction solution, the ratio of materials to solution as 1:20, microwave power as 600 W and 2 mm extraction time. By the optimum conditions, the yield (83.7%) of flavone from Trollius chinensis Bunge was obtained at 83.7%.

实验结果表明：微波辅助提取金莲花黄酮的最佳工艺条件是体积分数60%乙醇为溶剂，每克料浸提剂体积为20mL，微波功率600W，温度60℃，提取时间2min。

The effects of every main factors on extraction ratio are discussed, and the optimum conditions of extraction effective components from zizyphus jujuba are determined with the orthogonal test. Optimum conditions are obtained by using a new method of H2O2-decoloring in alkalescent condition, and effects of correlation factors on decoloring ratio are discussed. The yield ratio of polysaccharide is above 5.26% under these optimum conditions.

首先研究了不同提取过程中各因素对多糖提取率的影响，结合正交实验确定了微波最佳提取工艺条件；然后采用双氧水弱碱性条件下脱色新工艺，并对脱色各影响因素对多糖脱色率的影响进行了讨论，最终得出最优脱色条件，使多糖得率达到5.26％以上。

I am accused of being overreligious," she said in her quiet, frank manner,"but that does not prevent me thinking the children very cruel who obstinately commit such suicide.""

客人们在卡罗利娜·埃凯家里，举止就文雅一些，因为卡罗利娜的母亲治家很严厉。

Designed by French fashion house Herm è s, this elegant uniform was manufactured in our home, Hong Kong, and was the first without a hat.

由著名品牌 Herm è s 设计，这件高贵的制服是香港本土制造，是我们第一套不配帽子的制服。