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Experimental results indicate that the optical purity of the chiral cyanohydrin obtained by enzymatic reaction is quite high, and it is an excellent starting material for the stereoselective synthesis of the chiral amino alcohol compounds.

实验结果表明，醇腈酶催化合成的手性氰醇光学纯度较高，是合成手性氨基醇化合物的优秀原料，并且在随后的化学转化过程中各步反应产物均很好地保留了光学纯度。

All compounds are synthesized starting from the acylation reaction of gallic acid with L-glutamine to form the basic scaffold, followed by the cyclic reaction in acetic anhydride and the key intermediate cyclic anhydride (compound 4) was obtained. The intermediate compound is condensed with different amino acids or primary amines, and produces the target compounds.

本研究以L－谷氨酸为基本骨架，与甲醚化保护的没食子酸缩合后，经过酰化、环合反应得到关键中间体环状酸酐（化合物4），再经胺解反应合成目标化合物，其化学结构经过红外光谱、电喷雾质谱和核磁共振谱（氢谱、碳谱、碳氢异核多键相关谱）确证。

Was obtained in Trial 8 where the total cyclohexane conversion was 78% with 74% of the starting cyclohexane converted to oxygenate.

获得了审判8的总环己烷转化率78 ％与74 ％的转换开始环己烷氧化。

With the application of concept and method of programme stratigraphy and event stratigraphy,starting with the research for the cycle sediment,where the cyclothem of sequence of the outcropping stratum of mesoproteroxoic and neoproteroxoic era grade may be classificated into four different grade there occur from old to new one in Fangjinshan monutain group,one in Xiajiang group the same as one first stratum,and two in Sinian system involving Ti...

应用层序地层学及事件地层学的概念和方法，从沉积旋回的研究入手，首次在该区出露的中、新元古代地层中划分出 4个不同级别的旋回层，即梵净山群 1个(相当于 1个一级层序)、下江群 1个(相当于 1个一级层序)、震旦系 2个(即铁丝坳组—大塘坡组和南沱组—灯影组，相当于 2个二级层序)。

Check the oil-supply spacing of each cylinder and oil supply starting point in the static state.

l 喷油泵各缸供油量和供油均匀性的检测调试。

Our company relates to optics wafer treating right away starting from the 80's, In the field of wafer treating have accumulated large amount of the special field experience developing、giving birth to a child and managing. Grasp the various optics wafer Flat surface、Spherical surface、Cylindrical surface complete set processing technology.

本公司自八十年代初就开始涉及光学晶片加工，在晶片加工方面积累了大量开发、生产及管理的专业经验，掌握各种光学晶片平面、球面、柱面的全套加工技术。

Against Parma Giannichedda is ready to move back into the defence, with Dabo starting on midfield.

对阵帕尔马的比赛，GG已经做好移到后防线的准备，达博将在中路。

In the thesis the study of Chinese traditional medicine is start with two aspects: one is starting off from micro mechanism, researching the structure, character, medical mechanism from molecular level;the other is from macro-structure, studying property of medical material as a whole or protracting dactyl gram spectrum in order to attain identifying, differentiating and quality controlling of medical material.

中药的研究应从两个方面入手：一是从微观出发，从分子角度来研究中药活性成分的结构，性质和药理作用；二是从宏观出发，将药材作为一个整体，来研究其性质，或者绘制指纹图谱来实现对中药的识别，鉴别和质量控制。

Starting today, get rid of all milk / dairy products from your home.

从今天开始，不要再喝牛奶/吃家中日常每餐所准备的食物。

Domestically, they are patching up a dam that is starting to burst with pent-up desire for change.

在国内，他们修补着在压抑已久的改革渴望推动下已开始崩溃的大坝。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐