萃取的

Linear solvation energy relation was firstly introduced in the paper, and the method and step of gaining the special parameters of solvent and solute were introduced in detail, and these special parameters were used to selection and optimization of extractive agent in extractive distillation. The model of predicting activity coefficient at infinite dilution was established by linear solvation energy relation. By the above theory, several candidate solvents were selected to separate C5 fraction, and by experiment of vapor-liquid phase equilibrium at atmosphere pressure, the mixture of N-methyl-pyrrolidone including 4% water was used extractive agent of separating C5 fraction. Then binary vapor-liquid phase equilibrium of the some compound in C5 fraction and N-methyl-pyrolidone were determined at atmosphere pressure and correlated by NRTL equation. Isoprene being objective compound, experiments were operated in the laboratory-scale column; the processes were simulated by RadFrac model in ASPEN PLUS. And by the combination of experiment and simulation, the new process of separation of C5 was established.

本文首先对线性溶剂化能关系进行了分析介绍，也介绍了采用溶剂化能关系得到溶质溶剂特性参数的方法步骤，并将这些参数用于萃取精馏萃取剂的选择与优化；也通过线性溶剂化能关系式建立无限稀释活度系数预测模型，取得了一定的预测精度；将通过上述方法初选的溶剂进行了常压汽液平衡的测定研究，通过实验研究选定含水4%的N-甲基吡咯烷酮溶液做为C5分离的萃取剂，测定了大量N-甲基吡咯烷酮与C5组分的二元平衡数据，并进行关联计算；以异戊二烯为目标产物在实验室规模的精馏塔内进行了C5分离的实验研究，取得大量塔内数据；通过选用合适的热力学模型，采用ASPEN中RadFrac模块对分离过程进行模拟研究，通过实验与模拟相结合，建立了C5分离的新工艺，为将来的工业化打下了坚实的基础。

Continuous multistage counterflow centrifugal dephenol extraction and reextraction regeneration of the extractor were studied and proper operating parameters determined.

在此基础上，进行了多级连续逆流离心萃取脱酚及萃取剂反萃再生的研究，确定了适宜的工艺操作参数。

The nano ferric oxide powder was prepared by using methyl isobutyl ketone as extractant.

以轧钢皮粉为原料，利用甲基异丁基甲酮对铁的高萃取性采用萃取法制取高纯氧化铁红，探讨了萃取工艺对氧化铁收率的影响。

Results showed that extraction abilities depends on the hydrophobic of solutes which pK〓 values are similar, e. g. acetic, propionic, butyric and valeric acids, while pK〓 values affect dominantly the extraction abilities of acids with similar hydrophobic, e. g. formic, acetic, chloroacetic, dichloroacetic, and trichloroacetic acids. Meanwhile, diluents and TOA concentration also affect the extraction equilibria of acids through the specific basicity of TOA .

TOA对酸性差别很小的一元羧酸如乙酸、丙酸、丁酸、戊酸的萃取能力主要取决于羧酸的疏水性参数logP；TOA对疏水性参数差别较小的羧酸如甲酸、乙酸、一氯乙酸、二氯乙酸、三氯乙酸的萃取能力主要取决于羧酸的电性参数；稀释剂的种类、TOA的浓度都会影响TOA的表观碱度pH〓，并通过TOA的表观碱度影响羧酸的萃取平衡。

Result: The anticancer active component includes: taxol 9.45%、cephalomanine: 9.63%、10- deacetylbaccatinⅢ: 22.64%、total flavonoids: 19.15%. 3. The preparation of Seiadopitysin control Methods: Take dry Ginkgo leaves and extracted three times by sonication with 95% EtOH, solutions were concentrated under vacuum, after defatting by petroleum benzin, the sample was extracted with EtOAc and the solutions were concentrated under vacuum.

金松双黄酮对照品的制备方法：取干燥银杏叶以95％乙醇超声提取3次，提取液合并，减压浓缩，石油醚脱脂后，用乙酸乙酯萃取，萃取液减压浓缩，经硅胶柱(6cm×80cm)层析，石油醚-乙酸乙酯(9∶1～5∶5)梯度洗脱，产物用甲醇多次冲淋，再以二甲基甲酰氨溶解，反复重结晶，得黄色粉末结晶。

The solubility of grape seed oil in supercritical CO〓 was studied with ssociated models in the thesis.

以萃取葡萄籽油后的萃余物为原料，对超临界二氧化碳萃取原花青素的工艺进行了深入研究。

Difficulties existing in testing of nine carcinogenic dyes tuffs are analyzed,an innovative testing method is put forward as follows:using methol to extract the 9 dyes under the conditions of ultrasonic wave oscillation at 70 ℃,the extraction is separated by HPLC/DAD method.

分析了已知9种致癌染料检测中存在的困难，选择用甲醇作为萃取剂对这9种致癌染料在70℃、超声波振荡的条件下进行萃取，采用HPLC/DAD法对萃取液进行分离分析，讨论了试验中应注意的事项，如试剂、标准溶液的确定、仪器的选用、测试步骤的优化等。

After peltate yam is water washed, crushed, fermented and acid hydrolyxed, the solid matter and acid water solution are separated via centrifugation, the solid matter is extracted with organic solvent to make saponin extracted into organic phase, the organic phase is back extracted to eliminate other components, the organic solvent is distillation recovered for reuse and precipitation separated saponin is stoved to obtain product.

黄姜经水洗净、粉碎、发酵和加酸水解后，离心分离固体物和酸性水溶液，用一种有机溶剂萃取固体物，皂素被萃入有机相中，经返萃取去除其它成分后，将有机溶剂蒸馏回收，重用，沉淀析出的即为皂素，经烘干即得产品。

In this regard, the research trend of globalization of competition has been positively open up. In this paper a novel simulated annealing feature uniformity band selection approach is proposed for the feature extraction of the hyperspectral remote sensing images. The simulated annealing band selection method has been successfully applied to the feature extraction of the hyperspectral images by clustering highly correlated hyperspectral bands into a smaller subset of band modules based on simulated annealing algorithm. SAFU built by SABS is an efficient feature extraction method.

本篇论文提出一个新型的模拟退火特徵齐一化波段选取法应用在高光谱遥测影像的特徵萃取，模拟退火波段选取法已经成功的应用在高光谱影像的特徵萃取藉著群集高度相关的高光谱波段将之形成一个基於模拟退火演算法波段模组的子集合，本文提出之SAFU是建立在SABS之上，利用旧有SABS的特性加以改良，提出SAFU来对於高光谱影像可以更有效率的进行特徵萃取。

Introduces the method to extract total saponin in sisal hemp with supercritical CO2,and determ ination of total saponin by vanillin colorimetry.

采用超临界CO2萃取法萃取剑麻中的总皂苷，用香草醛比色法测定萃取产物中总皂苷。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失