查询词典 organic chemistry

So we understand to once and actually usually take place of the bad factory house adds plant egg white(soybean egg white etc. corn egg white) in the origin should be the milk powder of animality egg white, this is already the first floor to cheat and commit crime, dishonest at least, but the widespread phenomenon in the in view of the fact industry, and have no obvious side effect to the human body, therefore is connive;But the protein content in the original inferior product very low, unexpectedly meet more unscrupulous plant egg white raw material to provide a company, add three gather cyanotype An, result in as a result currently result;Here our for the time being imagining is the beperhaps havior of the supplier, perhaps is three deer companies have intention to add, the basic reason for add lies in a current Kai surname settle nitrogen protein measurement method can test an always organic nitrogen content, rather than the nitrogen content in the particular protein, therefore, the method blemish was fume by the cupidity the exploitation that the milk powder manufactories of heart speculate, make the false and inferior product deceive to reach to mark, because they know three chlorine cyanotype An toxicities are again very small, disguise a protein content to reach a mark in the examination, but they didn't thought of that the toxicity is pimping three chlorine cyanotype An exactly will bring serious Bi to baby kid to wet system stone calculus, we even can guess, other adults of three deers use a milk powder in must also imply in great quantities similar chemistry product, just the adult will not get instant results of is endanger by body.

那么我们了解一下，实际上经常发生的不良厂家在本应该是动物性蛋白的奶粉里添加植物蛋白，这已经是第一层欺骗和犯罪，至少是不诚实了，但由于是业内的普遍现象，且对人体无明显副作用，因此被默许；而本来劣质产品中蛋白质含量就很低，没想到遇到更缺德的植物蛋白原料提供商，添加三聚氰胺，结果造成目前后果；这里我们姑且想象也许是供应商的行为，也许是三鹿公司有意添加，添加的根本原因在于现行的凯氏定氮蛋白质测定方法只能测试总有机氮含量，而非特定的蛋白质中氮含量，因此，方法缺陷被利欲熏心的奶粉制造商们所投机利用，使伪劣产品蒙混达标，因为他们知道三氯氰胺毒性很小，又能在检测中伪装蛋白质含量达标，但他们就没有想到毒性很小的三氯氰胺却恰恰会对婴幼儿造成严重的泌尿系统结石，我们甚至可以猜测，其它三鹿的成人用奶粉中一定也含有大量类似化学制剂，只是成人不会立竿见影的受到身体危害。

With its unique molecular structure and outstanding bio-activities, qinghaosu has been proven as a worthy subject for in-depth studies with profound influence, not only for pharmacy, but also for phytochemistry, biogenetic synthesis and organic synthetic chemistry, chemical biology, etc. A great amount of work has been done in the last 30 years, with a lot more issues to be explored. Researchers need to seize the opportunity and make more achievements.

青蒿素以其独特的分子结构和杰出的生物活性显示出它是一有深远影响的研究对象，不仅对于药学，而且对于植物化学、生源合成、有机合成化学、化学生物学等学科都是一个可以大有作为的课题。30年来国内外已做了不少工作，但是还有更多的问题有待探索，机不可失，时不再来，期待着在綻放青蒿素的故土上结出更多的果实。

The chemistry of nucleophilic N-heterocyclic carbene has become a major area of research as organic catalyst in resent years.

具有强亲核性的N-杂环卡宾（N-heterocyclic carbenes， NHC）是近年来研究最为活跃的一类小分子有机催化剂。

In recent years, with the development of various good catalysts especially the ruthenium alkylidenes bearing N-heterocyclic carbene ligands, the RCM reaction has been applied widely in the synthesis of complex organic molecules, biological molecules and natural products etc. The Nobel Prize in Chemistry 2005 goes to Yves Chauvin, Robert H.

近二，三十年来，随着各种性能优良的催化剂的不断发展，尤其是含氮杂环卡宾配体的钌催化剂的出现，关环复分解反应在合成复杂有机分子，生物活性大分子以及天然产物等方面已得到了极为广泛的应用。2005 年的诺贝尔化学奖分别授予了 Yves Chauvin，Robert H。

Specialized in chemistry trade and service, the company insistently holds professional management concept, dealing with toluene and carbinol, both organic liquid chemical products, in areas of East China first.

公司成立于2002年，是一家专业从事化工贸易和服务性公司，京华化工实际创立时间可以追溯到20世纪90年代初，公司一直坚持专业经营的理念，是华东地区最早经营甲苯、甲醇这两大有机液体化工产品的公司。

The China Chemical Engineering Reagent Website(www.ce-r.com)focus in the information service market of chemical engineering products, with integration of the organic chemical engineering, inorganic chemical engineering, chemistry reagent , petroleum chemical engineering, foundation chemical engineering, plastics, rubber, coating, etc. we are aiming on the profession different characteristics and mainly the related product carry on research and analysis of system, to building up the price database service system.

中国化工试剂网（www.ce-r.cn）专注于化工产品市场资讯的信息服务，整合化工行业内的有机化工、无机化工、化学试剂、石油化工、基础化工、塑料、橡胶、涂料等几大行业，针对各行业不同的特点及主要相关产品进行系统的研究与分析，建立系统的产品价格服务体系。

The China Chemical Engineering Reagent Website(www.ce-r.com)focus in the information service market of chemical engineering products, with integration of the organic chemical engineering, inorganic chemical engineering, chemistry reagent , petroleum chemical engineering, foundation chemical engineering, plastics, rubber, coating, etc. we are aiming on the profession different acteristics mainly the related product carry on research analysis of system, to building up the price database service system.

中国化工试剂网（www.ce-r.cn）专注于化工产品市场资讯的信息服务，整合化工行业内的有机化工、无机化工、化学试剂、石油化工、基础化工、塑料、橡胶、涂料等几大行业，针对各行业不同的特点及主要相关产品进行系统的研究与分析，建立系统的产品价格服务体系。

Covering the chemistry of liquid-phase oxidation of organic compounds, this book includes the results of analysis with the parabolic model as applied to reactions of peroxyl radicals with C-H bond of different organic compounds.

在有机化学和生物学方面的氧化和抗氧化剂有機化学と生物学の面でのアンチオキダントと酸化します包括有机化合物的液相氧化的化学，这本书象适用于peroxyl 激进主义者与不同的有机化合物的C-H 契约的反应的那样用抛物线的模型包括分析的结果。

The asymmetric alkynylation of carbonyls is proved to be one of the most powerful procedures for organic synthetic chemistry,where the formation of one carbon-carbon bond and one chiral center of propargylic alcohol can be achieved in one step,and has attracted organic chemists\' most attentions.Plenty of works have been reported in recent years.

由于催化末端炔对羰基化合物的不对称加成在制备手性炔丙醇的同时，能够构建一个碳碳键和一个手性中心，因而该领域的研究受到了研究者的广泛关注，有大量的研究工作见报道。

And therefore it has the potential applications in green chemistry and chemical process,organic reactions areas.The literature review section of the thesis gave a brief introduction of the important applications in the green chemical process as well as the status of organic reactions research in NCW,and also summarized the applications in different kind of reactions such as hydrolysis,dehydration/hydration,alkylation,acylation, Diels-Alder reactions,rearrangements,condensations,hydrogen isotope exchange reaction,oxidation-reduction reaction,organometallic reactions.

论文的综述部分简要介绍了近临界水在绿色化工过程中的重要应用价值和国内外在近临界水中进行有机化学反应的研究现状，以及以近临界水作为反应溶剂或催化剂在水解反应、脱水/水合反应、烷基化、酰基化、Diels-Alder反应、重排反应、缩合、氢同位素交换反应、氧化还原反应、有机金属反应等反应类型中的应用。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。