化学合成

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

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。

Most of characterized conotoxins are mainly from fish-hunting conus as well as several molluscivorous species, because they were believed to be toxic to vertebrateIn this study, we investigated the venom of Conus marmoreus and Conus vexllium from South China Sea by separating, purifying and protein sequencing technologies to character unknown conotoxins.

本文通过天然毒素的提取，分离纯化，蛋白质测序，化学合成与二硫键定位等手段对中国南海的食螺的大理石芋螺和食虫的菖蒲芋螺进行了新型小肽毒素的发现和鉴定研究。

Based upon the synthetic procedure, we can rationally modify the molecular structure of CsO to screen out the more active and less nephrotoxic peptidomimetics.

在 CsO 的化学合成的基础上，我们可以进一步通过结构活性关系研究来筛选出活性更高、毒性更小的多肽类似物。

Skeleton and chain syntheses have become highlights of study and development of new carbapenems.

骨架和侧链的化学合成是碳青霉烯类药物研究和开发的重点和热点方向。

In this study, the DNA fragments coding for amino acids 133～158 of VP1and 20～34 of VP4protein of type Asial FMDV were chemically synthesized and ligated into a tandem repeat 133～158-20～34-133～158. The sequences of signal peptide of Igκ chain and Kozak were fused to the 5'end of this tandem sequence and synthetic oligodeoxynucleotide containing CpG-ISS was fused to downstream of terminal coden of this tandem sequence. And then this long fragment was cloned into the eukaryotic expression plasmid pHook-2, forming a new secreted expression plasmid, named pAS1-E.

在第二章证明了亚洲Ⅰ型口蹄疫病毒VP1蛋白中133～158位氨基酸残基确是一重要B细胞中和抗原表位的基础上，依据第一章获得的口蹄疫病毒亚洲Ⅰ型VP1 cDNA序列及已报道Asial VP4序列，采用真核偏爱密码子化学合成了VP1中编码133～158位氨基酸及VP4中编码20～34位氨基酸这两个抗原表位基因，将其组成133～158-20～34-133～158串联结构，在其5′端加上鼠Igκ链信号肽序列，在翻译调节区加上增强表达的Kozak序列，同时在133～158-20～34-133～158串联结构3'端终止密码子下游加上CpG免疫刺激序列，将这些片段连接后，克隆到真核表达载体pHook-2上，构建成功了DNA疫苗重组表达载体pAS1-E。

If a treatment is applied with chemically synthesised allopathic products, the treated colonies are placed in isolation apiaries and all the wax is replaced with wax from organic hives, and a conversion period of one year isapply to those colonies.

施用对抗疗法的化学合成的药品的蜂群，放在隔离的蜂箱里，所有的蜂蜡用来自有机蜂脾的蜂蜡替换，蜂群经过一年的转换期。

Compared with chemical surfactant, biosurfactant has a low toxicity to ecological system of Earth and can be biodegraded by microorganism.

相对于化学合成的表面活性剂，生物表面活性剂对生态系统的毒性较低，且可生物降解。

In addition, the vacuum jet pump has to be edible oil deodorizing, chemical composition of polymer production, water desalination, oil dehydration, food, beverages and tobacco conditioning, spinning bath of the suction and many other applications.

另外，真空喷射泵还用以可食用油脱臭、化学合成物的聚合物的生产、海水脱盐、油脱水、食品、饮料和烟草的调理、纺纱浴的抽吸及其它许多应用领域。

In order to improve the desensitizing efficiency of TATB on HMX, HMX/TATB composites were prepared by in-stiu coating and mixing method respectively.

为提高TATB对HMX的钝化效果，利用声化学合成方法，在HMX颗粒表面原位生成了TATB，制备了HMX／TATB复合物。

Methods The total RNA was acquired from young rabbit particular cartilage, the BMP7 gene was inserted into pcDNA-3.1 to construct eukaryotic expression vector plasmid of pcDNA3.1-BMP7; the target gene-BMP7 was identified respectively by PCR analysis, restriction enounces analysis and nucleotide sequencing; the plasmid was transfected into adult rabbit knee articular chondrocytes, then the expression of BMP7 was detected by in situ hybridization, PCR and Western blotting.

从体外培养的幼兔膝关节软骨细胞中提取总RNA；按GenBank BMP7基因序列化学合成2条引物，采用RT-PCR方法得到BMP7基因；将BMP7基因片段插入到真核表达载体pcDNA 3.1中，构建pcDNA3.1-BMP7真核表达载体质粒；利用双酶切、PCR及核苷酸序列分析鉴定BMP7目的基因；将重组pcDNA3.1-BMP7真核表达载体质粒转染家兔关节软骨细胞，分别采用原位杂交、PCR、Western blotting法测定BMP-7表达。

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