结果用水加热回流提取法得率最高。
该混合物加热回流1小时。
方法：采用乙醇做溶剂，水浴加热回流提取。
并发现用乙醇加热回流提取制备的浸膏，黄酮含量不稳定。
We also find that the content of flavonoids was not same in extract prepared by alcohol under refluxing.
方法：用不同功率和频率的超声仪提取及加热回流提取样品液。
Method: Sample solution were extracted by ultrasonic in different power and frequency and by reflux.
结果供试品溶液制备中以70%甲醇直接加热回流提取，优于提取方法。
Result Refluxing with 70% methanol was better than other ways in sample preparation.
用酸水解多糖链后经离子交换净化 ，再用醋酐、吡啶加热回流乙酰化。
The glycosides in membrane proteins were extracted by using acid and cleared by using ion exchange column.
使用这种方法的关键在于选择合适的溶剂、足够的碱浓度及加热回流时间。
The key to the use of this technique lies in selecting appropriate solvents, a certain basicity and time enough for return flow in heating.
利用超声波提取脱脂豆粕中的大豆异黄酮，并与加热回流的提取方法进行比较。
Soybean isoflavone were extracted from defatted soybean meal by ultrasonic wave and compared with heating circumfluence method.
目的：为解决采用微波加热回流进行实验时微波泄漏对人体危害的问题，并实现远距离自动操作。
Objective: to solve the problem of the harm of microwave leak when doing microwave circumfluence experiment and carry out the automation in far distance.
主要研究结果如下：采用加热回流提取法，对白首乌进行乙醇提取，并通过化学萃取得到总甾苷。
The main results of this dissertation were described as following:The roots of C. auriculatum was extracted by ethanol through heating reflux, then purified by chemical extraction.
加入夹带剂乙醇后白花前胡甲素提取量增加，且超临界流体萃取法明显高于水煎煮和加热回流法。
As cosolvent alcohol was added, the amount of extraction of the praeruptorin A increased, and the amount of SFECO2 extraction was higher than those of decoction and heating reflux.
本文报告了以酒厂废料杂醇油为原料，在催化剂浓硫酸或阳离子交换树酯存在下，经加热回流与冰醋酸反应生成以乙酸异戊酯为主的混合酯。
It is reported that fusel oil can be used for synthesising mixing esters mainly inclusding amyl acetate when it is heated and back-flowed with Catalyst oil of vitriol or canon exchange resin.
为了开发莽草酸资源，以高效液相色谱法分析了马尾松、侧柏以及八角茴香中的莽草酸含量，并研究了马尾松中莽草酸的超声提取、加热回流两种提取方法和不同加标水平的回收试验。
To exploit the resources of shikimic acid, the content of shikimic acid in Masson pine leaf, Oriental arborvitae leaf and Star anise, the extraction and recovery experiments were studied by HPLC.
分别在不同进料比、进料位置、加热/冷却温度的条件下，对TCAP工艺的全回流模式进行了实验。
Thermal cycling absorption process(TCAP) in a full reflux mode was studied at different feeding ratios, feeding places and heating/cooling temperatures.
回流焊：应用加热金属涂敷层的表面和预涂焊膏，熔融，连接和凝固两个金属涂层。
Reflow Soldering: Melting, joining and solidification of two coated metal layers by application of heat to the surface and predeposited solder paste.
用回流加热链着火分析法，分析比较了钝体燃烧器和开缝钝体燃烧器不同的稳焰机理。
By the method of circle heating chain analysis, the different mechanism of flame stability between bluffbody burner and slitting bluffbody burner were compared.
本论文主要通过自行设计太阳能沼气池，研究太阳能对沼气发酵加热保温和消化液回流效果的影响。
This paper mainly through self-designed solar digester Researches effect of solar heating and insulating biogas fermentation and reflux of digestive fluid.
通过模拟计算，研究了回流比、预热冷却器面积、塔釜冷却量、蒸发器加热量以及泵循环流量对热敏精馏过程的影响。
By simulation, the effects of reflux ratio, the area of the preheat-cool exchanger, cool duty of still pot, heat duty of evaporator and the liquid flow recycled by pump on heat sens...
利用回流烟气加热一次风煤粉气流和提高一次风气流的煤粉浓度，都有利于锅炉燃烧的稳定。 开缝钝体燃烧器的设计综合考虑了回流加热和煤粉浓度局部富集。
Using recirculation flow to heat the primary air and increasing the concentration of pulverized coal in primary air really do good to boiler flame stability.
利用回流烟气加热一次风煤粉气流和提高一次风气流的煤粉浓度，都有利于锅炉燃烧的稳定。 开缝钝体燃烧器的设计综合考虑了回流加热和煤粉浓度局部富集。
Using recirculation flow to heat the primary air and increasing the concentration of pulverized coal in primary air really do good to boiler flame stability.
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