合成

Carries on the synthesis experiment, the productdepuration, through the highly effective liquid phase chromatographydetermination content once more, by the highly effective liquid phase,infrared, the ultraviolet spectrophotometric method and so on carrieson the attribute Key word: Ginger flavine; Substitution reaction; Crystal;Synthesis.

再次进行合成实验、产物提纯、通过高效液相色谱法测定含量，以高效液相、红外、紫外分光光度法等进行表征关键词：姜黄素；取代反应；晶体；合成。

A detailed analysis of Schulz—Flory distribution has been given and a calculation method for growth rate and termination rate of Chain in Fischer Tropsch synthesis is presented here.

经过对Fischer—Tropsch合成产品分布和Schulz—Flory方程的研究与分析，、提出了对决定F—T合成产品分布的重要参数——链生长几率、链生长速率及链终止速率的直接计算方法。

A detailed analysis of Sehulz—Flory distribution has been given and a calculation method for growth rate and termination rate of Chain in Fischer Tropsch synthesis is presented here, Calculation method was based on experiment data and the development doesn't need to be confined by postulating mechanism.

经过对Fischer—Tropsch合成产品分布和schulz—Flory方程的研究与分析，提出了对决定F—T合成产品分布的重要参数——链生长几率、链生长速率及链终止速率的直接计算方法。

So it has made the great progress. The method studied in this research from o-Dichlorobenzene is a ideal route to synthesize 2,4- dichlorofluorobenzene, which has temperate condition easy to control,safe process,low cost and good quality of products; The method of Phase transfer catalysis fluorination without solvent is better than present technology in presence of DMSO as solvent in many aspects; In a word,it is worth being promoted by the domestic correlative factories.

本课题所研究的以邻二氯苯为原料的2，4-二氯氟苯合成路线反应条件温和，工艺容易控制，生产安全，而且产品质量好，是比较理想的合成路线；以季胺盐为催化剂的无溶剂相转移催化氟化法与溶剂法相比具有明显的优势；通过实验确定的工艺条件对工业化生产有重要的指导意义，可提高以邻二氯苯为原料的工艺路线的市场竞争力。

We chose formamide as a solvent for the preparations because itdissolves all of the reagents, and because the binary phase diagram of surfactants informamide resembles that of water.

我们对不同的有机溶剂中中介结构硫化钨的合成进行了研究，发现极性溶剂更有利于中介结构硫化钨的合成。

It is revealed that a certain amount of excessive formamide is favorable for preparation of the aerogel with high porosity, while more excessive glycol can deteriorate the formation of nano-porous SiO2 aerogel network. Additionally, the pH value of the reaction system has a strong impact on the microstructure and properties of prepared SiO2 aerogel.

研究发现：微过量的甲酰胺，有利于高孔隙率气凝胶的合成；过量的乙二醇的引入不利于低密度气凝胶的形成；pH值对合成气凝胶的性质也有较大的影响。

The recursive language relation formula is given in four synthesis operations, by which the language of synthesized system can be obtain and both liveness and deadlock-freeness of resultant system can be determined.

描述了四种合成操作中合成网系统与各子网系统之间的并发语言关系，给出了相应的递归语言关系式。

The concurrent language relation formula is presented and proved in the synchronous synthesis of Petri net systems, and it can be applied to judge the liveness and deadlock-freeness of a synthesized system.

该语言关系式可用于判定同步合成Petri网系统的活性与无死锁性，同时给出了同步合成Petri网系统活性与无死锁性的充要条件。

The language recursiveness in sharing synthesis process is proposed and proved, and then the language relation formula based on the concurrent language is obtained.

进而利用这个语言关系式来判定共享合成网系统的活性与无死锁性，得到共享合成网系统活及无死锁的充要条件。

According to the synthetic methods study of the quinolones, it is found that the synthetic method of parent ring is of wide use by the condensation from α-substituted aryl formyl-β-substituted aminoacrylic acid and the inner molecular nucleophilic substitution reaction, which is almost suitable for the quinolones preparation of different rings or different substituted groups in 〓-position.

然后，对其合成方法进行了归纳，发现：由α-取代芳甲酰基-β-取代氨基丙烯酸缩合，经分子内亲核取代反应形成喹诺酮母环的合成方法用途非常广，几乎适用于所有不同环系或〓-位是不同取代基的喹诺酮类衍生物的制备。

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