化学合成

Bromobenzene widely exists as one of the organic pollutant in waters.It is one of the organic intermediates in chemical synthetical processes and the representation of halogenated aromatics and organic solvent.Bromobenzene brings harmfulness to entironment and peoples health.

溴苯作为水体中常见的有机污染物之一在环境中广泛存在，它是许多化学合成的有机中间体，也是有机溶剂与卤代芳香族物质的代表，给环境和人体健康带来不容忽视的危害。

Various chemosynthetic mutes of 3'-deoxyadenosine were reviewed based on raw material.

本文对虫草素的化学合成方法进行了全面总结，并作出合适的评价和分析。

It could be synthesized by a key intermediate 2-pentylidene cyclopentanone formed a condensation starting from cyclopentanone and n-valeraldehyde, followed by isomerization, Michael addition and a selective decarboxylation.

本文研究了以正戊醛和环戊酮为基本原料，经缩合反应、异构化反应、Michael加成反应和脱羧反应等制备二氢茉莉酮酸甲酯的化学合成方法和工艺。

The method simplifies the synthesis process of 4, 4'-dihydroxy enterolactone, widens the pharmaceutical applications of arctiin, and provides a new healthcare food for preventing and treating climacteric syndrome, osteoporosis, hyperlipemia, breast cancer and endometritis.

本发明简化了化学合成4，4′-二羟基肠内酯的步骤，同时也为扩大牛蒡苷的药用范围，提高它的药用价值提供了新途径；也为预防和治疗更年期综合征、骨质疏松、血脂升高，乳腺癌、子宫内膜炎等提供了一种新的保健产品。

Bi2Te3 nanocapsules have been synthesized by the aqueous chemical route at 65℃ with the addition of disodium ethylenediaminetetraacetate salt.

采用65℃低温湿化学合成方法，在添加乙二胺四乙酸二钠的情况下，制备了Bi2Te3纳米囊。

Chemical synthesis and fermentive method is the major industrial way to produce DHS, and microbial rational modification based on the development of metabolic engineering made the fermentive method more widely used.

工业上一般采用化学合成法和发酵法来生产3-脱氢莽草酸，随着代谢工程的兴起，使得更加理性改造菌株成为可能，这更加促进了发酵法的广泛应用。

A number of chemical synthesis techniques have been reported to yield pure homogen...

近些年报道了大量均一、纯相PZT粉末的化学合成技术。

In addition, this work studies the chemo-synthesis of Hypericin.

另外，本文还进行了金丝桃素化学合成的部分研究。

II. The State practices the special-purpose control system with respect to the production, management, use and export of ephedrine (including extracts from ephedra grass and chemically synthesized, laevorotatory and dextrotatory) as well as their saline categories such as ephedrine hydrochloride, ephedrine oxalic, ephedrine sulphate and raw products of ephedrine (including ephedrine extracts, ephedrine extract powder and ephedra powder), ephedrine derivatives and prescribed preparations made with ephedrine as the raw material.

二、国家对麻黄素(含从麻黄草提取和化学合成的，包括左、右旋)及其盐类如盐酸麻黄素、草酸麻黄素、硫酸麻黄素和麻黄素粗品(含麻黄浸膏、麻黄浸膏粉、麻黄草粉)、麻黄素衍生物以及以麻黄素为原料生产的单方制剂等的生产、经营、使用、出口实行专项管理制度。

The State practices the special-purpose control system with respect to the production, management, use and export of ephedrine (including extracts from ephedra grass and chemically synthesized, laevorotatory and dextrotatory) as well as their saline categories such as ephedrine hydrochloride, ephedrine oxalic, ephedrine sulphate and raw products of ephedrine (including ephedrine extracts, ephedrine extract powder and ephedra powder), ephedrine derivatives and prescribed preparations made with ephedrine as the raw material.

二、国家对麻黄素(含从麻黄草提取和化学合成的，包括左、右旋)及其盐类如盐酸麻黄素、草酸麻黄素、硫酸麻黄素和麻黄素粗品(含麻黄浸膏、麻黄浸膏粉、麻黄草粉)、麻黄素衍生物以及以麻黄素为原料生产的单方制剂等的生产、经营、使用、出口实行专项管理制度。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失