extract

Investigation on complex extraction technique of yeast gourmet;

酵母味素综合抽提技术的研究

The lab study of carbon dioxide's multiple extraction influence on wax precipitation temperature in formation oil;

CO_2多次抽提作用对地层油析蜡温度影响的实验研究

The Influence of Soxth-Extraction on Synthesis of Hexagonal Mesoporous Silica Sieve;

索氏抽提对HMS合成的影响

A Study of Technological Parameters of Extract in Preparation Process of Binder;

粘结剂制备过程中抽提工艺因素的研究

Its mainly procedures include: extraction of mushroom, production of soy sauce, making of chili sauce, production of sauce glue, seasoning and sterilization ect.

整个工艺流程可分为抽提菇汁、制取酱油、辣椒制酱、制熟酱和调味灭菌等几个主要步骤。

Compared three methods that extract oligosaccharides from carrot,the best technology is: Ethano-Methanol extraction.

文章研究了三种从胡萝卜中提取寡糖的方法,较佳的工艺是:用乙醇-甲醇两次抽提法,先用乙醇和沸甲醇抽提单糖,再用甲醇抽提寡糖。

Experiment on refinery sludge treatment by solvent extraction;

溶剂抽提法处理炼厂污泥实验

Herein, solvent extraction could be used to take out the structure templates from zeolite pores because the interaction between skeletal Zr-O-Zr structure and PEO surfactants is very weak.

根据Zr-O-Zr骨架结构与有机物种键合较弱的特点,使用了溶剂抽提法脱除结构导向剂。

Five methods in solvent extraction for separating aromatics in China and abroad were introduced, including Udex, Sulfolane, Arosolvan, DMSO and Formex processes.

简介了国内外芳烃分离溶剂抽提的5种方法:Udex法、环丁砜(Sulfolane)法、N-甲基吡咯烷酮(Arosolvan)法、二甲基亚砜(DMSO)IFP法及N-甲酰基吗啉(Formex)法。

Revamping of atmospheric naphtha aromatics extraction unit and process parameters optimization;

石脑油芳烃抽提工艺改造与参数优化

Causes and protective countermeasures for corrosion of aromatics extraction system;

芳烃抽提系统腐蚀原因与防护对策

Remoulding of aromatics extraction unit;

芳烃抽提装置的扩能改造

In order to study influence of different factors on coal extraction yield,temperature,irradiation time,the ratio of solvent volume to coal mass and granularity of coal were discussed for Shenfu coal under microwave-assisted extraction(MAE) using tetrahydrofuran(THF),ethanol and methanol as solvent.

在微波辅助下,以神府煤为研究对象,四氢呋喃、乙醇、甲醇为溶剂,考察了抽提温度、时间、溶剂量及煤粒度对抽提率的影响,结果显示:上述3种沸点不同的溶剂抽提率达到其最佳值所需要的溶剂量及煤粒度相差不大但抽提温度有所不同;同时探讨了以四氢呋喃、丙酮、N,N-二甲基乙酰胺为溶剂,对不同变质程度煤的微波辅助抽提效果,结果是变质程度相似的煤在相同抽提条件下抽提率不同。

The results showed that little xylan absorbed on fiber or carbohydrate linked to cellulose was removed out during xylanase pretreatment stage and these carbohydrate mainly were removed out during alkaline extraction stage, and this would lead to an obvious decrease in special absorption coefficient.

结果表明,木聚糖酶处理过程很少脱除吸附在纤维表面或是联接在纤维表面的碳水化合物,而在碱抽提过程中,这些与木聚糖酶的反应产物才真正脱离,光吸收系数也有明显降低。

The effects of xylanase AU-PE89 treatment combined with chelating and alkaline extraction on HD bleaching of NaOH-AQ wheat straw pulp, was investigated.

结果表明:木聚糖酶结合螯合处理和碱抽提可以有效改善NaOH-AQ麦草浆HD漂白效果,同时还可以降低HD漂白废液的CODCr,减少漂白污染。

This study discussed the composition of coal pyridine soluble from column-chromatography(CC) and the Soxhlet extraction method.

本研究以吡啶为溶剂,对准葛尔黑岱沟、平朔、潞安常村3种不同变质程度的煤样进行了柱色谱分离和索氏抽提。

The ethylene-propylene copolymer was pretreated by Soxhlet extraction and temperature-rising elution fractionation;the treated specimens were analyzed with carbon spectrum of nuclear magnetic resonance.

利用索氏抽提分离、升温淋洗分级对乙丙共聚物进行分级,对分级后的级分做核磁共振碳谱测试。

The analytical results of steroids m/z 217 and hopanoids m/z 191 agree with the results obtained using DCM (CH_2Cl_2) Soxhlet extraction, and the hydropyrolysis yield is much higher than that of DCM extraction.

结果表明,实验样品的催化加氢热解产物收率明显高于二氯甲烷(DCM)索氏抽提,产物色谱图中饱和烃的峰形、保留时间和质谱特征与索氏抽提峰形基本一致;对比两种方法产物中饱和烃主要指标甾烷m/z217和藿烷m/z191表明,经过加氢还原,干酪根分子网络中共价键结合着两种生物标志物分子骨架得到印证,为催化加氢热解提取沉积物中生物标志物的方法可靠性提供了依据。