查询词典 aldehyde anise

With Ti(30)/W(400)-HMS as catalyst, at n:n=1:2,ω=4%, and the reaction time 5 h, the conversion of benzyl alcohol and the selectivity of benzyl aldehyde reached to 72.6% and 96.9%, respectively.

利用Ti(30)/W(400)-HMS为催化剂，当n：n(H2O2)=1：2、ω=4%、反应时间为5 h时，苯甲醇的转化率和苯甲醛的选择性分别为72.6%、96.9%。

In the first part,we studied the nucleophilic addition reactions of aldehyde, amine,Zinc and benzyl bromide in one pot to afford homobenzyl and homoallyl amines in moderate to good yields.

第一部分的工作中，我们研究了Barbier型条件下醛，胺，锌粉，溴试剂一锅法的亲核加成反应。这种反应可以高效的得到高苄基和高烯丙基胺类化合物。

A pH-responsive controlled releasing carrier for medicine is a chitosan-base gel which is prepared from Chitosan, gelatin and pectin through cross-linking by aldehyde cross-linking agents, and features obvious pH dependency, high biocompatibility and abling to biologically degradate. It can be used for detention-type controlled releasing medicines to avoid toxic' by-effect due to excess dosage.

一种pH响应性药物控释载体，采用壳聚糖、明胶和果胶等天然高分子材料用醛类交联剂共交联合成了壳聚糖基凝胶，用该凝胶制备的药物释放体系呈明显的pH依赖性，用于口服抗酸、治疗胃肠疾患的滞留型控释制剂，可避免释放药量过度导致的毒副作用，且该控释载体生物相容性好、可生物降解。

Papers in the experimental part of our literature considered on the basis of the experimental exploration, and podophyllotoxin intermediates with the structural characteristics of a simple pepper aldehyde as the starting material,α,β-unsaturated carbonyl compounds are selective reduction lithium aluminum hydrogen reduction reaction as the key steps to have the Knoevenagel condensation, peracetic acid epoxy between chlorine and alkaline hydrogen peroxide epoxy, DCC condensation esterification reaction of the three podophyllotoxin intermediates.

论文实验部分我们在综合考虑文献的基础上，经过实验摸索，并结合鬼臼毒素中间体的结构特点以简单的胡椒醛为起始原料，对α，β-不饱和羰基化合物具有选择性还原的锂铝氢还原反应为关键步骤，先后经过Knoevenagel缩合，间氯过氧苯甲酸环氧化，碱性过氧化氢环氧化，DCC缩合酯化等反应合成了3个鬼臼毒素中间体。

Tanning method of classification according to chrome-tanned leather, vegetable tanning leather, aldehyde tanning and the combination of tanning.

按鞣制方法分类有铬鞣革、植鞣革、醛鞣革和结合鞣革。

Methods: 60 freshly extracted , single-rooted premolars were randomly divided into two experimental groups (cinnamic aldehyde, gallnut decoction) and four control group (FC group, calcium hydroxide mixed with propylene glycol group, negative the control group and positive control group),.

标本牙去除牙冠部及根尖部，留取6mm长牙根，50颗牙建立粪肠球菌根管感染模型后，20颗牙根管内分别放置桂皮醛、五倍子水煎剂，另30颗感染根管放置FC、氢氧化钙丙二醇糊剂和生理盐水。

The preparation technique of aldehyde acetals energetic plasticizers BDNPF and BDNPA is introduced.Their physico-chemical properties,energy characteristics,thermol performance and application in the formulations of explosives and prope...

重点介绍缩醛类含能增塑剂BDNPF和BDNPA的制备技术，论述了其物理化学性能、能量特性和热性能，以及在炸药、推进剂配方中的应用，指出此类化合物的合成及应用，将是含能增塑剂研究的重点。

Shrinked aldehyde drying glue and soldering tin is two kinds of adhesive materials used for adhibiting and fixing the pieces of ferrite on the inner wall of the shell of microwave ferrite devices.

易容平（华东电子工程研究所，安徽合肥 230031）摘要：缩醛烘干胶和焊锡是微波铁氧体器件中常用的两种粘接材料，用于铁氧体片在器件壳体内壁既定位置上的固定。

The combined technique of GC/MS was used to analyze the out water. The results showed that the activated bacteria could can degrade the hard degradation organism, such as esters, aldehyde, alcohols, alkanets and so on.

通过GC/MS联用技术对焦化废水出水的水样分析，可以发现该活性细菌在培养条件下能部分降解酯类、醛类、醇类、烷烃类等难降解有机化合物。

Third, the phenyl aldehyde precipitation method and ion-exchange method were utilized to refine the eluent.

次之，分别采用苯甲醛沉淀法和离子交换法对L-精氨酸粗提液进行纯化精制。

You can buy sweetened beverages, if that suits you.

你若喜欢的话，可以买些含有糖精的混合饮料。

As many of you are probably aware, Nick and Vanessa were recently faced with an embarrasing sex scandal after naked pictures of the two getting jiggy with it in a hot tub surfaced the net.

正如很多你可能知道，尼克和 Vanessa 最近面临一个尴尬的绯闻事件后，赤裸裸的图片两个越来越jiggy与它在浴缸中的一个热点浮现净。