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extraction相关的网络例句

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MethodNortheast Rape leaves as subject, using the Kjeldahl Nitrogen Determination method, Soxhlet extraction method and direct drying method, the content of leaf protein, crude fat and water in Northeast Rape leaves were determined to study the influence of different pH, extraction temperature, time and the ratio of solid-liquor on the extraction percentage of leaf protein.

方法以东北小油菜叶作为试验材料,分别利用凯式定氮法、索式抽提法和直接干燥法测定油菜叶中叶蛋白、粗脂肪和水分含量,研究不同pH值、提取温度、时间及料液比对叶蛋白提取率的影响。

MethodsThe extracting process was optimized by a uniform design with extraction rate, macrophage phagocytic function and lymphopoiesis rate as indexes to observe the effect of extraction temperature, amount of added extract solvent, extraction time and alcohol concentration on the immunity function of rats.

方法用均匀试验法设计最佳提取工艺条件,以复方的提取物得率、巨噬细胞吞噬活性和淋巴细胞增值率为测定指标,研究液料比、温度、提取时间和醇沉比例四个因素提取的免疫活性成分对小白鼠免疫功能的影响。

For extraction of green tea polyphenol and Malian black tea polyphenol, different extraction solvents were used to identify the best extraction solvent.

对于绿茶多酚和马里黑茶多酚的提取,用了不同的提取溶剂,从中选出了最好的提取溶剂。

The optimum hydrolytic conditions of razor clam for neutral protease were : enzyme concentration 2.4%, hydrolysis temperature 50癈, substrate concentration 1:3, pH 7 and reaction time 6 hrs with the degree of hydrolysis and extraction rate of total nitrogen 42.46% and 83.04% respectively; and foracid protease they were: en/yme concentration 6.0%, hydrolysis temperature 50癈, substrate concentration 1:4, pH3.5 and reaction time 5 hrs with the degree of hydrolysis and extraction rate of total nitrogen 46.37% and 87.94% respectively, the hydrolysate being clear light yellow. For the combination of two kinds of proteases they were: first hydrolyzing with 2.6% f 1 avouryme for 3 hrs, then hydrolyzing with 2.4% neutral protease for 3 hrs with the degree of hydrolysis and extraction rtiie of total nitrogen 4-1.57% and 86.95% respectively.

最后综合考虑了水解率、总氮回收率和水解液的色泽、澄清度等指标,得出了较适宜的酶种为单酶以枯草杆菌中性蛋白酶和酸性蛋白酶效果较好,双酶以风味蛋白酶与枯草杆菌中性蛋白酶双酶组合水解效果较好,其适宜的水解工艺条件分别为:枯草杆菌中性蛋白酶加酶量为2.4%,水解温度50℃,料水比1:3,pH值中性条件下水解6h,绕蛙蛋白质的水解率和总氮回收率分别为42.46%和83.04%;酸性蛋白酶水解编蛙肉的适宜的工艺条件为加酶量6.0%、水解温度50℃,料水比l:4,pH值3.5条件下水解sh,水解率为46.37%,总氮回收率为87.94%,水解液呈较清澈的淡黄色;双酶采用先用2.6%风味酶水解3h后,再加入2.4%中性蛋白酶水解3h,水解率达44.57%,总氮回收率为86.95%。

By comparison recoveries of several sequential extraction procedures and selectivity of extractants for thorium in soil and scoria, Martínez-Aguirre's sequential extraction method was adopted for quantitative analysis of thorium fractions, then the optimization and evaluation of the sequential extraction method were performed.

分别采用Tessier、BCR和Martínez-Aguirre形态萃取方法对土壤和样品中钍的形态进行分析,通过对总量的回收率和萃取剂选择性比较,选择了Martínez-Aguirre连续萃取法定量样品中钍的形态,并对其进行了优化和评价。

Rusults The results showed that ultrasonic wave extraction method was more efficient than the sorbite extraction method and microwave extraction method.

结果超声提取优于索氏提取和微波提取,甲醇优于乙醇和双蒸水。

Methods: Response surface methodology was applied to study effects of extraction temperature, ethanol concentration, extraction time and solid to liquid ratio on extraction yield of anthraquinone and stilbene glycoside as well as clearance rate of the extracts to DPPH radical.

通过单因素和中心组合试验,对影响何首乌中二苯乙烯苷、蒽醌类化合物含量的提取因素(温度、酒精浓度、时间、料液比)进行了研究,同时将提取物清除DPPH自由基的能力作为考察指标,运用响应面分析法确定清除自由基组分提取的最优化工艺条件。

Using the stolon of the Paris polyphylla as the experimental material, the extraction ratio of steroidal saponin has been studied with the orthogonal test of L16(4^5), in which the 4 factors are extraction time, ethanol concentration, ultrasonic time and the ratio for the mass of raw material drug to the volume of ethanol, and then the optimized extraction has been obtained.

以滇重楼的根茎为实验材料,重楼甾体总皂甙的提取率为评价指标,运用L16(4^5)正交试验,考察了皂甙浸出过程中的浸泡时间、乙醇浓度、超声剂量、粗粉质量与浸泡用乙醇体积之比4个因素在4个水平下的工艺过程,筛选出了最佳提取工艺。

The problem has been studied from two sides, firstly, from the viewpoint of applicability, based on the development strategic objectives of the oil company, with the aim to unify the exploration and extraction decisions of the resources in an integrated framework, and integrate the macro economic and technical objectives with micro economic and technical models of an oil well, an integrated non-linear dynamic optimal control model has been constructed, the objective is the benefit maximum of the exploration and extraction of the resources, and the optimalstrategies are obtained by changing the problem into a non-linear mathematical programming problem, on the other hand, from the more macro level, based on the analysis of the characteristics of the exploration and extraction activities of oil and gas resources, a conclusion is easily deduced that the procedure is full of randomicity, then discovering procedure of oil deposit is proved to be a Poisson process, and the reserves process is a supermartingale process, so the model of exploration discovery rate and the reserves model could be constructed.

其次从相对更宏观的层次上,通过对油气资源勘探与开发的特点分析,认为具有很强的随机性,证明了勘探活动发现油气藏的过程为一泊松过程,所发现的油气藏储量为一上鞅过程,在此基础上,建立了油气藏勘探发现率模型及储量模型,在油气价格服从几何布朗运动条件下,以油气开采收益最大化为目标,建立了一个油气资源勘探与开发的随机最优控制模型,采用动态规划方法得到了值函数的HJB方程,并针对方程的特点,以及方程及其变量所对应的经济学意义,对最优策略的求解进行了一些讨论。

Some preparation methods of galanthanime including extraction and organic synthesis were summarized, such as extraction from narcissus, galanthus woronawii losink, and lycoris radiate and countereurrent chromatography refining, and enzymatic extraction from hyacinths orientalis, as well as the organic synthesis using 3,4-dimethoxybenzaldehyde, methyl 3,4,5-trihydroxybenzoate, isovanilin and tyramine as raw material.

概述了加兰他敏从黄水仙、沃氏雪花莲中提取、石蒜中提取及逆流色谱法精制、喇叭水仙酶法中提取的方法、工艺;以3,4-二甲氧基苯甲醛、3,4,5-三羟基苯甲酸甲酯和异香草醛和酪胺为起始原料合成加兰他敏的方法。

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