查询词典 extraction

The studies was proceeded on the the supercritical CO2 extraction technique of rotenone from Tephrosia vogelii. The extraction influences of technology conditions were systematically groped, The research results were listed as follows:1 The analysis method applied in this paper has been proved to be suitable to technology research of the studies on the SC-CO: extraction technique of rotenone from Tephrosia vogelii. 3 indexes, extraction ratio of rotenone. extraction ratio of total compounds and rotenone content percent in total compounds weight, were carried out with HPLC quantitatively determination combined with the sample weight loss after extraction. With these 3 indexes. The extraction influences of technology conditions were evaluated by synthesis. Then the best technology conditions were ascertained for different extraction aims.2 The pretreatment of rough material should be needed before extraction. Comminuting the material to 0.28mm size is most fit to SC-CO: extraction.3 Firstly static extracting 20 min then turn to dynamic doing is the better extraction mode than other ones.4 The orthogonal experiment was conduct with 3 factors and 5 levers.

本论文通过对非洲山毛豆SC-CO_2萃取中影响萃取效果的工艺条件的研究，初步得出如下结果：(1)本论文中所采用的萃取效果评价方法适宜于非洲山毛豆中鱼藤酮的超临界流体萃取技术研究，该方法具体为：HPLC定量分析非洲山毛豆SC-CO_2萃取物中的鱼藤酮含量，再结合萃取前后处理样品的重量损失，得出鱼藤酮萃取率、萃取所得粗物质萃取率和粗物质中鱼藤酮含量三个参数，以此三个指标综合评价萃取条件对萃取效果的影响；(2)通过对原料粒度对萃取效果影响的研究，结果表明SC-CO_2萃取非洲山毛豆复叶中的鱼藤酮，原料粉碎成30目粒度叶粉时萃取效果较好；(3)通过对萃取方式与萃取效果之间关系的研究，结果表明SC-CO_2萃取非洲山毛豆中鱼藤酮应采用先静态后动态的萃取方式，静态萃取时间为20min；(4)通过温度、压力和CO_2流量三因素五水平的正交试验，结果表明温度是最主要的影响因素，压力因素对鱼藤酮萃取率的影响程度高于CO_2流量，而对于粗物质萃取率和粗物质中鱼藤酮含量CO_2流量因素高于压力。

Effects of different extraction modes, extraction time, pressure and temperature on the extraction yield of onion essential oil and sulphur concentration were investigated,and the different extraction solvents and extraction times were researched in liquid-liquid extraction procedure. The optimal conditions of extraction of onion essential oil with subcritical water were static extraction, 100~150℃sequential program temperature increasing extraction for 30min, 5MPa, petroleum ether as extraction solvent for two times.

考察了提取方式、提取时间、温度、压力对洋葱精油的提取得率及含硫化合物浓度的影响，并对液液萃取中溶剂的种类和萃取次数进行了研究，得到了洋葱精油的亚临界水提取最佳工艺：静态提取、提取时间30 min，压力5 MPa，100～150 ℃的连续程序升温，石油醚为萃取溶剂，萃取2次。

Content: Wine, Borage extraction, Grape seed extraction, Citric acid, Citrate, Liquorice, Baicalin extraction , Equisetum extraction, Hops extraction, Pinecone extraction, Citrons lemon extraction, Rosemary extraction.

成 份：红酒，紫草根萃取，葡萄籽萃取，柠檬酸、柠檬酸钠，甘草酸钾，黄苓萃取，木贼植物萃取，啤酒花萃取，松果萃取，柑橘柠檬萃取，迷迭香叶萃取物。

According to the results of the orthogonal experiment and its actural application,the ideal extraction process of SSPS was solid-liquid ratio:1∶20,extraction temperature:120 ℃,extraction pH:3,extraction time:1.5 hours.Among these factors the extraction temperature had the greatest influence on the extraction ratio of SSPS,extraction pH and extraction time also had influence on the yield of SSPS.SSPS at concentration of 4.0 g/L could stabilize acid dairy beverage which was prepared with 36 g/L skim milk and 50 g/L sugar at pH 4.0.The stability of SSPS was similar to that of pectin,but superior to that of Acacia gum,PGA and CMC.

结果表明，从豆渣中提取大豆水溶性多糖的最佳工艺为固液质量比1：20，提取pH=3，提取温度120 ℃，提取时间1.5 h；对多糖提取率影响最大的因素是提取温度，其次是提取pH和提取时间；提取的大豆水溶性多糖在添加量为4.0 g/L、pH为4.0的酸性乳饮料中，其稳定作用最好，稳定效果与果胶相似，而明显优于阿拉伯胶、PGA和CMC。

Described the design of supercritical fluid extraction principles; combination of star anise essential oil of the nature of the proposed extraction conditions for extracting pressure 15MPa, extraction temperature 40 ℃, CO2 flow rate 830 ~ 850L / h, extraction time of 2h, the extraction conditions selected temperature swing separation, further development of the star anise crushed, CO2 super-critical phase transition, extraction, separation and packaging processes; in determining the production process on the basis of material balance, heat balance, extractor size calculation, piping calculation and packaging process is calculated; for the pollution occurred during the production, analysis of pollution sources, pollution control and waste treatment proposed measures; accounting of production costs and value.

本设计阐述了超临界流体萃取技术的原理；结合八角精油的性质，提出萃取条件为萃取压力15MPa，萃取温度40℃，CO2流量830～850L/h，萃取时间2h，根据萃取条件选用变温变压的分离方式，进一步制定了八角粉碎、CO2超临界相变、萃取、分离和包装等工序；在确定的生产工艺流程的基础上进行物料衡算、热量衡算、萃取釜尺寸计算、管路计算和包装工序计算；针对生产过程中出现的污染，分析污染的来源，提出控制污染和废料处理的措施；核算生产的成本和价值。

In order to optimize technological parameters of arecoline extraction from areca nut using supercritical carbon dioxide extraction technique, the effects of extraction temperature, extraction pressure and extraction time on arecoline extraction were explored by second-order regression general rotation design.

为了优化超临界CO2萃取槟榔碱的工艺参数，通过三元二次通用旋转组合设计实施试验，考察了萃取温度、萃取压力和萃取时间因素对槟榔碱萃取量的影响。

The method: First of all, with 95%, respectively, ethanol, petroleum ether (60 ℃-90 ℃), acetone, chloroform and other organic solvents for extraction of total pigment shikonin ability to inspect, the better the selection of solvent extraction, and then choose extraction dynamic orthogonal extraction were optimized in order to Shikonin total extraction rate for the pigment inspection targets, optimization of the extraction of the best ways.

首先分别用95%的乙醇、石油醚(60℃-90℃)、丙酮、氯仿等有机溶剂对紫草总色素的提取能力进行考察，筛选出较佳的提取溶剂，再选用浸提法、动态提取法分别进行正交优选，以紫草总色素的提取率为考察指标，优选出最佳的提取方式。

As feature extraction acts an important role in pattern recognition system, we propose three novel feature extraction methods for HCCR: a、Two structural feature extraction methods, Stroke Cross Counting Features and Peripheral Features are studied. According to the characteristics of Chinese handwriting samples, we extend the SCCF and PF respectively to weighted elastic SCCF and weighted elastic PF. Experiments show that the modified feature extraction approaches are better than original approaches. b、A new statistical feature extraction method——Elastic Meshing Directional Decomposition Feature extraction is proposed. According to the stroke statistical properties of Chinese character, we first decompose a handwritten character pattern into four directional subpatterns. Then a set of elastic meshes are applied to each of the four subpatterns respectively to extract the pixel distribution features.

统计识别方法：利用统计模式识别的经典方法——Bayes分类方法来进行汉字识别的研究，特征提取是统计模式识别的关键，本文着重围绕手写体汉字的特征分析和提取方法进行了研究，提出了三种特征提取的新方法： a、两种改进的结构特征提取方法：在笔划密度特征和外围特征的基础上，结合手写体汉字的特点，提出了加权非均匀笔划密度特征、加权非均匀外围特征的特征提取新方案； b、一种新的统计特征提取方法——弹性网格方向分解特征，根据汉字方块字的特点及笔划分布的统计特征，对手写体汉字进行横竖撇捺四方向的分解，并利用一系列的弹性网格对汉字分解后各分量的象素进行统计而提取特征，实验证明该特征提取方法用来进行手写体汉字识别是十分可行和有效的。

The best extraction parameters are confirmed. The extraction temperature is 30℃, the extraction time is 20min, the extraction ratio is 4:1, and the extraction solution is alkalescency.

通过实验，确定了理论上最佳的萃取工艺条件：萃取温度30℃、萃取时间20min、萃取比4∶1、保持废水在碱性条件下萃取。

The influence of extraction temperature,extraction pressure,extraction time and the dosage of modifier on the extraction of chlorophyl from peach leaf by supercritical CO2 extraction technology was studied.

研究了萃取温度、萃取压力、萃取时间和夹带剂添加量对超临界CO2萃取桃叶中叶绿素的影响。

But this is impossible, as long as it is engaging in a market economy, there are risks in any operation.

但是，这是不可能的，只要是搞市场经济，是有风险的任何行动。

We're on the same wavelength.

我们是同道中人。