查询词典 dipentene

OBJECTIVE:To study the enhancement effect of dipentene in the transdermal absorption of tinidazole.

目的：研究双戊烯对替硝唑的促透效果，为透皮促进剂的选择提供参考。

From comparative research of synchronous and asynchronous reaction of dehydrogenation and cracking of dipentene,it is shown that farraginous extent of by-products from synchronous reaction is relatively high.

双戊烯脱氢裂解的同步反应和异步反应对比研究显示，双戊烯脱氢裂解的同步反应产物比较混杂，反应产物中甲苯的相对含量仅为24。

The cyclic dipentene in C 5 raw material was taken off by heat polymerization .

以大庆石化总厂C5馏分为原料，经热聚工艺脱除环戊二烯，采用自制络合AlCl3 催化剂，合成了浅色C5石油树脂。

The main downstream products from the industrial dipentene were reviewed,such as:some kinds of polyester,fine chemical intermediates such as p-cymene,p-menthane and flavours such as carvone ,terpinyl acetate and so forth,the main characteristics and applications were also described in the paper.

综述了工业双戊烯主要的下游产品聚酯树脂、精细化工中间体如对伞花烃、对孟烷以及香料如香芹酮，乙酸松油酯等的合成方法及反应条件，介绍了相应产品的主要性质、用途。

METHODS:In vitro,by means of traditional method to compare the enhancement effect of dipentene with azone at difference concentrations in the transdermal absorption of tinidazole.

通过离体小鼠皮肤渗透释药实验，测定含不同浓度双戊烯和氮酮对替硝唑溶液促透效果。

The catalytic performance of copper-nickel oxalate catalysts prepared by concurrent coprecipitation was studied in the gas-phase reaction of p-cymene synthesis by dehydrogenation of industrial dipentene.

研究了并流共沉淀法制备的草酸铜-草酸镍催化剂在工业双戊烯脱氢合成对伞花烃气相反应中的催化性能。

From comparative research of synchronous and asynchronous reaction of dehydrogenation and cracking of dipentene,it is shown that farraginous extent of by-products from synchronous reaction is relatively high.

双戊烯脱氢裂解的同步反应和异步反应对比研究显示，双戊烯脱氢裂解的同步反应产物比较混杂，反应产物中甲苯的相对含量仅为24.03%，双戊烯相对于甲苯的料耗比为5.34，甲苯的得率为30.79%，中间产物对伞花烃的得率为2.49%；双戊烯脱氢裂解的异步反应产物混杂程度相对较低，反应产物中甲苯的相对含量为40.74%，对伞花烃的相对含量为18.31%，双戊烯相对于甲苯的料耗比为3.33，甲苯的得率为49.26%，中间产物对伞花烃的得率为16.92%。

P-Isopropylphenol was synthesized by catalytic transfer dehydrogenation with 5% Pd/C using 4-isopropylcyclohexenone as the material and the hydrogen offer, industrial dipentene as the hydrogen acceptor and the solvent.

采用5%Pd/C作为转移氢催化剂，4-异丙基环己烯酮为氢给予剂，工业双戊烯为氢接受剂和溶剂进行反应，合成了对异丙基苯酚。

The chain scission occurs at the position with respect to double bonds, forming the main products including dipentene, styrene and vinyicyclohexene.

二聚体形成途径主要有两种：（1）主链自由基进行分子内转移，&反咬&实现环化，生成二聚体；（2）单体通过双分子合成反应生成二聚体。

The p-Isopropylbenzoic acid was synthesized by catalytic transfer dehydrogenation with 5% Pd/C using dihydrocumic acid as material and hydrogen offer, industrial dipentene as hydrogen acceptor and solvent, reacted directly under reflux condition.

采用5% Pd/C作为转移氢催化剂，原料二氢枯茗酸为氢给予剂，以工业双戊烯作为氢接受剂和溶剂，合成了对异丙基苯甲酸。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。