合成的

Many flavonoids have been found to possess antiphlogistic, estrogenic or anti-allergenic properties.

查尔酮合成酶(chalcone synthase，CHS)是所有黄酮类化合物合成的关键酶，它介导了此类化合物合成的第一步。

The first step of the plant pterin branch is catalyzed by GTP cyclohydrolase Ⅰ and the first step in the conversion of chorismate to pABA is mediated in plants by aminodeoxychorismate synthase.

叶酸分子是由喋呤和对氨基苯甲酸从头合成的，二者合成的关键酶腺苷三磷酸环化水解酶和氨基脱氧分支酸合成酶已得到克隆鉴定。

By azo compound became chromophore monomer disperse red -19, and through Sulfonyl of the compound was synthesized by the C, and through 1HNMR its structure was characterized, the results show that the synthesis of compounds C of very high purity, synthetic polymers can meet at the request of the monomer, but also of the compound D, through 1HNMR its characterization, showed that high purity compounds D, is expected to be functional after the adoption of To all the excellent performance PEEK electro-optic polymer materials.

本文通过偶氮化合成了生色团单体分散红-19，并通过磺酰化反应合成得到了化合物C，并通过核磁共振氢谱对其结构进行了表征，结果表明，所合成的化合物C的纯度非常高，完全能满足聚合物合成时对单体的要求，同时也合成了化合物D，通过核磁共振氢谱对其结构表征，显示化合物D纯度很高，应有望通过后功能化合成出各种性能优良的聚醚醚酮电光高分子材料。

Part two: Using chloroformic ester reacted with potassuim thiocyanate to get thiocyanic esters. Then reacted with biological substituted pyrimidinamine to synthesize forty two thiourea compounds, thirty eight of them are new compounds. Their structures have been charactered by IR, 1H NMR and elemental analysis.

第二部分：先以氯甲酸酯和硫氰酸钾为原料合成异硫氰酸酯，再与有生物活性的取代氨基嘧啶反应，合成了一系列新的取代嘧啶基硫脲类化合物，合成的42个化合物中有38个为首次合成的新化合物，结构经元素分析、IR及~1H NMR得到确证。

For thermodynamic and kinetic reasons, a relatively large number of materials can not be directively synthesized by self-propagating high-temperature synthesistechnology. In addition, SHS process is generally difficult to effectively control. These limitations retard the further development of SHS technology. In this project, the imposition of an external electric field is utilized to activate self-sustaining reactions and to simultaneously control SHS process.

为了扩大自蔓延高温合成技术的合成材料范围，并实现对SHS过程的有效控制，本项目分别以反应热小和反应速率低的反应体系为对象，利用外加电场诱发了体系的自蔓延燃烧，合成了在普通SHS工艺下难以合成的材料；同时，将外加电场作为SHS技术中一个重要的工艺参数，同步实现了对SHS过程的柔性控制。

Morgenstern proposed the composition games, the person sets of composed games were required no-connect in the study on composition games, which restricted the widely research on composition games.

Morgenstern提出合成对策问题之后，关于合成对策的研究一般都要求被合成的对策的局中人集合彼此不交，这样就限制了对合成对策问题的广泛研究。

The experimental results showed, after absorption of CO2, the material could be reprepared, whose performance of absorbing CO2 for the second time is affected by the temperature and air flux during repreparation.

实验结果表明，在吸收CO2后材料的再次合成过程中合成温度及空气流量影响材料吸收CO2的循环性能，在再次合成温度为750℃，空气流量为100mL／min的条件下，合成的材料具有良好的循环吸收CO2的性能。

During the stationary phase of fermentation, cell productivity was slightly reduced. MgSO_4 and tryptone have the positive effect on the product synthesis and cell growth respectively. Based on these conclusions, MgSO_4 and tryptone were added to the feed medium to enhance the production of polysialic acid. Variable feed rate policies were applied to the fed-batch fermentation process and the final biomass and polysialic acid production were both increased by 40 percent.

通过摇瓶实验研究了大肠杆菌发酵过程中菌体生长和产物合成的影响因素，结果表明：产物合成与菌体生长是相耦联的过程，菌体生长受到菌体代谢产物的抑制作用，聚唾液酸的合成不受代谢产物的抑制作用；发酵进入稳定期后菌体的生长和生产能力有所降低；硫酸镁和胰蛋白胨分别对产物合成和菌体生长有一定的促进作用。

A series of alkyl diphenyl ether were synthesized with low cost raw materials,diphenyl ether and aliphatic alcohol,catalyzed by concentrated sulfuric acid,and followed by sulfonation to produce MADS.On the basis of analysis and characterization,structure of the products was identified,effect factors of the preparation reactions were investigated and the optimum reaction conditions were obtained.2.The surface chemical properties of C_8,C_9,C_(10)-MADS were determined.

通过对产物的表征分析，对其结构进行了鉴定，并对合成反应的影响因素进行了分析讨论，优化了合成条件。2、测定了所合成的系列烷基二苯醚双磺酸钠C_8-MADS，C_9-MADS，C_(16-MADS的表面化学性能，结果表明：合成样品在质量分数高达10%的无机酸、无机碱及无机盐溶液中表面化学性能稳定，同时显示出优良的乳化性能和在硬水条件下较好的去污洗涤性能。3。

Self-propagating high-temperature synthesis or combustion synthesis is a recently developed technology for producing materials with the advantages of simplisity of process, time and energy saving and excellent properties of products.

自蔓延高温合成或燃烧合成是近年来兴起的一项引人瞩目的合成材料的新技术，它具有工艺简单，省时节能，合成的产品性能优异等优点。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。