合成

In the paper the effects and main differences of maleic anhydride and acrylic acid in the synthesis of polycarboxylate superplasticizers are analyzed according to their respective characteristics and technical requirements for synthesis.

根据马来酸酐与丙烯酸各自的特性和聚羧酸盐减水剂合成的技术要求，分析了它们在合成过程中的作用和主要差别，并概述了马来酸酐在合成中的应用情况，最后提出了马来酸酐在合成中应用的几点建议。

This process utilizes the packaged technology--- Slurry Bed Fischer-Tropsch Synthesis independently developed by Institute of Coal Chemistry, Chinese Academy of Sciences to convert syngas ( H2+CO2) into high-quality synthetic diesel oil, naphtha, liquefied petroleum gas and chemicals.

中科合成油煤制油技术，利用自主创新的浆态床费托合成成套技术，将合成气（ H2+CO2）转化成优质合成柴油、石脑油、液化石油气及相关的化学品。

Furthermore,enzymatic production of cephalexin using free penicillin G acylase in aqueous system wasstudied. The parameters, including pH, temperature, concentration of 7-ADCA and molar ratiosof 7-ADCA to phenylglycine methyl ester, that affect the yield of cephalexin, wereevaluated. In section Ⅱ, the integration technique of bioseparation and biosynthesis was investigatedfirst time in the enzymatic production of cephalexin.

第Ⅰ部分主要建立了对酶法合成头孢氨苄过程行之有效的HPLC检测方法，实现了头孢氨苄合成过程中所涉及的四种物质，即头孢氨苄、苯甘氨酸甲酯、苯甘氨酸及7-ADCA快速有效的检测；同时对水相体系中头孢氨苄合成过程的影响因素进行了研究，明确了水相体系中温度、pH值，底物浓度以及底物配比对酶法合成头孢氨苄得率的影响。

During these years (1997-2000) in the research area of annonaceous acetogenins 5 natural products and a number of chiral-pure analogs of annonaceous acetogenins have been synthesized using sugars as the starting materials. Their high activity and selectivity against cell line of colon tumor and a relationship between activity and configuration have been found too. In the respect of inhibitor of sialidase two new methodologies for the synthesis of chiral-pure 3-deoxy-ulosonic acid using hetero-Diels-Alder reaction or asymmetric propargylation as the key reaction were developed. On the topic of anti-leukemia marine natural product clavulactone a synthetic method based on the free radical cyclization and starting from sugar has been developed. In other title of PKC inhibited agent sphingosine a new synthetic route with SN2' as the key reaction has also been disclosed.

项目期间（1997-2000）在番荔枝内酯方面从糖出发合成了五个天然产物和一批手性纯的类似物，它们对肠癌细胞有很高的活性和选择性，并与构型有关；在唾液酸酶抑制剂方面发展了二类全新手性纯高碳糖的合成方法－杂原子D－A反应或丙炔基不对称加成为关键的反应；抗白血病海洋天然产物群柱虫内酯方面研究了由糖出发和自由基环化反应的合成方法；对PKC 起抑制作用的鞘氨醇方面也开创了新的合成途径－由糖出发并以SN2'反应为关键反应。

Main on-going research works include:"Expressive speech synthesis system","Spontaneous Speech Generation in Natural Human Computer Interaction"(863),"High performance distributed speech synthesis and recognition engine"(863),"The evaluation system of Chinese information processing"(863),"Multilingual speech synthesis system","emotional speech synthesis and classification","text independent voice conversion", etc.

当前正在进行的研究工作包括：具有表现力的语音合成系统，自然人机交互中的口语产生系统（863），高质量分布式语音合成和语音识别引擎的研究（863），中文信息处理评价系统（863），多语言语音合成系统，情感语音合成与情感分类，文本独立的语音转换系统等。

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。

The general method and microwave radiation Veratrum aldehyde synthesis comparison Abstract: Objective To investigate the synthesis methods Veratrum aldehyde and to study the synthesis of microwave radiation of the advantages and disadvantages of this new approach, to provide guidance for the production of meaning.

化学合成毕业设计翻译求解急！！用普通方法和微波辐射法合成藜芦醛的比较摘要：目的考察合成藜芦醛的方法，并研究微波辐射合成这种新方法的优缺点，为生产提供指导意义。

The thesis concerning about the total synthesis of some natural occurringlignans and neolignans consists of following five parts:I. Progress in the synthesis of some natural occurring neolignans A view of the synthesis of some natural occurring neolignans, especiallybenzofuraniod and bicyclo[3, 2, 1]octanoid neolignans was given. The syntheticmethods for this two kind of neolignans have been classified and discussed.Ⅱ.

本论文研究了一些木脂素和新木脂素类天然产物的全合成，共包括五部分内容：一、一些新木脂素类天然产物的合成进展对一些新木脂素类天然产物尤其是苯骈呋喃类和双环[3，2，1]辛烷类新木脂素的合成工作进行了较为全面的介绍，并对此类化合物的合成方法进行了分类和讨论。

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。

The effects of situ hybirdization study show that the expression of NO-i increases evidently in the cytolymph of bone. It proves that GSL can obviously increase the content of NO-i and promote the synthesis of bone and secretion of iNOS.

组化及原位杂交研究结果显示，在软骨细胞的胞浆中，NO合成酶的表达显著增加，表明骨疏灵能明显增加NO合成酶的含量，并能促进成骨细胞合成和分泌NO合成酶。

She gently rebuff ed him, but agreed that they could be friends

她婉言拒绝了，但同意作为朋友相处。

If in the penal farm, you were sure to be criticized.

要是在劳改农场，你等着挨绳子吧！