查询词典 solvent

On the basis of the former results, Miscibility of unseparated reaction solution with varied resins were investigated by means of co-solvent method and the glossiness of the film method. The miscibility of 344# acrylic resin with the mixture was better than others, when the ratio of the mixture to 344# acrylic resin was one to ten, the miscibility attained best, and the glossiness of the film was 100 percent.The effect of miscibility and molecular weight on delaminating rate were investigated by the co-solvent method.

在聚马来酸醉溶解性能、相容性测定的基础上，通过共溶剂法、溶液涂膜法和溶解度参数法，考察了反应液不分离直接和不同树脂复配的情况。344#短油度醇酸树脂和接枝物的相容性较好，在接枝物：短油度醇酸树脂=1：10时，相容性达到最好，涂膜光泽值达到100%。

The specific properties of materials, such as the palate adhesion, dynamic cruor, anti-bacterial and the degradability of lysozyme, were studied, which provide valuable data for further application. The main creative ideas are listed as follows:(1) The water-retention chitosan/poly vinyl alcohol blend fiber was obtained by coagulating in 10％ NaOH/ethanol solution, and the blend and crosslink due to GA can enhance the mechanical properties of fiber;(2) The controlled degradable chitosan/gelatin blend fiber was obtained by solution filature, and the mechanical properties were improved;(3) The N-acylchitosan with the different degree of substitution were successfully prepared, and the relationship between structure and properties was estabilished;(4) By a new solvent system of 6％ NaOH/4％ urea for cellulose, the blood anti-coagulant function films were prepared by blending cellulose with chitin;(5) In the same solvent system above mentioned, the anti-bacterial blend films based on cellulose and carboxymethyl-chitosan were prepared, and the relationship of DS and the anti-bacterial property was concluded;(6) The controlled degradable chitosan films was obtained by the chemical crosslink.

本论文的主要创新点：（1）以NaOH水溶液／无水乙醇为凝固液，采用溶液纺丝法制备出保水性壳聚糖／聚乙烯醇纤维，共混和戊二醛交联极大提高了壳聚糖纤维力学性能；（2）用壳聚糖和明胶共混，以溶液纺丝法制备出可控降解的壳聚糖／明胶纤维，并大幅度提高了壳聚糖共混纤维的干、湿态抗张强度；（3）确立了不同取代度N-酰基壳聚糖的合成方法及其膜的结构与性能的关系；（4）利用纤维素新溶剂6％NaOH／4％尿素制备出抗凝血性纤维素／甲壳素共混膜；（5）利用上述纤维素新溶剂制备出抗菌性纤维素／羧甲基壳聚糖共混膜，揭示了羧甲基壳聚糖取代度与抗菌性能的关系；（6）制备出可控降解壳聚糖交联膜。

The optimum process was as follows : solvent is 0.3% ammonia solution , ratio of solvent to solid ratio is 10:1 , vacuum-cavitated time is 15 minutes , GA extraction yeild is 2.0%, the crude extract is 30.3%, and in which the content of GA is 6.6%.

采用负压空化方法对超临界萃取后固形物中甘草酸的提取工艺进行了研究，并研究了甘草酸纯化的工艺，通过影响因素试验和正交试验得出最佳工艺条件为：0.3%的稀氨水为溶剂，液固比为10：1，负压空化提取15min，甘草酸提取率为2.0%，含量6.6%。

With egg yelk as raw material, extracted by aquiferous ethanol and aether, removing water and oil by acetone, we gain phospholipids mixture, and search the extracting conditions. The optimum condition is determined:extracting temperature (20 ), time (60mins), solvent (92%ethanol),solvent quantity (12 times of the yelk), at which yield is highest; using thinlayer chromatography to measure its component, the content of phosphatidylcholine extend to 68.2%.

本文以鸡蛋的卵黄为原料，采用含水乙醇与乙醚提取，通过丙酮脱水去油，得到粗品卵磷脂；并对提取条件进行了优化研究，结果表明：提取时间60分钟，用92％乙醇，加入含水乙醇是蛋黄重的12倍，在20℃时，卵磷脂收率最高；采用薄层扫描法定量检测，所得粗品卵磷脂的纯度高达68.2％。

Methods Acorus gramineus soland was used as model .Different polar solvent was used for washing the uncomplexed oil and extracting the complexed oil respectively. The optimum solvent group were selected to determine inclusion efficiency.

以石菖蒲油包合物为模型，采用不同极性的溶剂分别进行包合物表面未包合游离药的洗涤，以及包合物中已包合药物的提取，筛选出合适溶剂组合用于挥发油包合物的包封率测定。

Dichloromethane or chloroform is an appropriate solvent for the acylation reaction when the addition of a solvent is necessary in the some cases.

在需要加入溶剂的情况下，二氯甲烷或氯仿是一种合适的溶剂。

For decreasing the quantity of the organic solvent and saving the environment, this paper is focused on the preparation of stable TiO2 sol by using titanium alkoxide as precursor and water as solvent while adding acetic acid for the purpose of moderating the rate of hydrolysis.

溶胶-凝胶处理可以在织物的表面形成复杂的氧化物网络结构，这层凝胶固着在织物的表面，改表纤维的表面化学性能，赋予织物一定的功能性。

The influences of solvent to oil ra-tio, temperature and the composition of the sulfur compounds on the desulfurization of a simulated FCC naphtha con-sisting of n-octane, thiophene and benzothiophene by single-stage solvent extraction were studied first.

以PEG-400为萃取剂，研究了由正辛烷、噻吩、苯并噻吩构成的汽油模拟体系，考察了单级萃取中溶剂比、温度和硫化物组成对分配系数和脱硫率的影响，在剂油比为1时，对模拟体系的脱硫率可以达到64.2％。

The nature of solvent use and it may be, the choice of solvent oils should be bepaid the phacolytic, the volatile and security.

溶剂油的性质视其用途不同而有别，选择溶剂油应主要考虑其溶解性、挥发性、安全性。

Result: The optimization process of extraction for Flavonoids in Bidens can be described as following: microwave power was 850 W, radiation time was 30 min, solvent concentration was 40%, solvent volume was 13 times as the proportion of raw material, and dipping time was 60 min.

结果：优选出微波辅助萃取鬼针草中总黄酮的工艺条件为：微波功率850 W，提取时间30 min，溶剂浓度40%，液固比13∶1，浸泡时间60 min；牡丹皮中丹皮酚的工艺条件为：微波功率340 W，提取时间20 min，溶剂浓度85%，液固比例为5∶1，浸泡时间30 min。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。