反应作用

The low molacular hydrogenated bisphenol A epoxy resin was prepared by the ring-closing reaction of the chlorohydrin ether and alkali and high molecular hydrogenated bisphenol A epoxy resin was synthesis by the addition polymeration of the low one and hygenated bisphenol A.

氢化双酚A和环氧氯丙烷在催化剂作用下开环反应生成了氯醇醚，而后加碱进行闭环反应，制备了低分子质量氢化双酚A型环氧树脂，再将其进一步与氢化双酚A等进行加聚反应，得到高分子质量环氧树脂。

The reported organocatalyst for asymmetric Mannich reaction include proline derivatives, chiral phosphoric acids, chiralurea derivatives, cinchona alkaloids and so on, which can catalyze the asymmetric Mannich reaction with high catalytic activity and excellent enantiselectivity.

本文评述了各类有机催化剂在有机催化不对称Mannich 反应中的应用研究进展，以及不对称诱导反应的机理、催化剂分子结构及反应条件对其催化活性和不对称诱导作用的影响。

Its five visceras and six mansions is the entity"equipments" that carries on bio-chemical reaction continuously, but skeleton,muscle,skin etc. the organization then props up,protect these entity of equipments , and with the external world contiguous necessary outer circle hardware;The meridian is the living creature information system that colludes with to live the quick and the external world contact and combines to adjust bio-chemical reaction of oneself continuously;The acupoint then the information commutation crunode of the spirit lifeblood, the spirit blood this physiology media wears through the acupoint movement deeply to make in the viscera in the veins and arteries,function they adjust the speed,for enzyme that the bio-chemical responds process to provide continuously etc., live the human body normal physiology metabolism by assurance, maintain life to continue, evolution with multiply greatly.

其五脏六腑是不断进行生化反应的实体"设备"，而骨骼、肌肉、皮肤等组织则是支撑、保护这些实体设备，并与外界接触的必要外围硬件；经络是勾通活人体与外界联系、并不断调整自身生化反应的生物信息系统；腧穴则是经络的信息交换结点，气血这个生理传媒通过腧穴运行穿透于经络、作用于五脏六腑使它们不断调整生化反应过程的速度、酶供等，以保证活人体正常生理代谢，维持生命延续，进化和繁衍。

Students should grasp the classification of the nitration reactions and its industrial application, the main nitration reagents and the nitration method, the classification of the sulfonation reactions, the function of sulfo group and its in the industrial application, sulfonating agents and its industrial application, the separation method for the sulfonated compounds, the widespread applicationof diazonium and the coupled reactions and its in the industry specially employed in the dyes and the pigments synthesis

掌握硝化反应的分类及其在工业上的应用。掌握主要的硝化试剂和硝化方法。掌握磺化反应得分类、磺酸基的作用及其在工业上的应用。掌握磺化剂其在工业上的应用。了解磺化物得分离方法。掌握重氮化及偶合反应及其在工业上特别是在染料和颜料合成中的广泛应用。

This damage can be due to an irritant effect, which can cause a reaction in anyone or an allergic reaction, which will only cause a reaction in some people.

这种损害，可由于一刺激性的作用，从而引起反应，在任何人或过敏反应，这只会引起的反应，在一些人。

It was found that the catalysts with 1.5% Pd content showed a higher activity. At 60—65℃ and 0.6MPa with a total catalyst amount of 0.5%,the conversion of dehydrolinalool was higher than 99% and the selectivity for linalool was higher than 96%. The change in catalyst composition upon reused for 7 times was evaluated by using ICP,and the effect of Pb and Bi to the catalytic behavior was discussed.

结果表明，钯质量分数为1.5%的催化剂活性较高，在反应温度为60～65 ℃，系统压力为0.6 MPa，催化剂用量为原料质量的0.5％，去氢芳樟醇转化率大于99%时，芳樟醇选择性大于96%，催化剂套用7次后，利用ICP对使用前后催化剂的组成进行分析后，根据反应结果分析了Pb和Bi对加氢反应的作用。

In this section, we focused on the investigation of the condensation, Michael reaction of different aromatic aldehyde with different aryl substituted ketones under solvent-free and PTC conditions, obtained polysubstitutedcyclohexanol derivatives in mordent yield when using TBAB as the catalyst.

通过实验发现，TBAB对该反应具有良好的促进作用，使在液相中需十几个小时甚至几十个小时才能完成的反应，在无溶剂条件下几分钟就可完成，并且使液相中两步完成的反应，而在无溶剂条件下一步就可完成，且产率优良。

In plants , NO has recently been demonstrated to be involved in the regulation of growth and development in the response to abiotic and biotic stresses and it is a key signal messenger in disease resistance in plants. More important , it has been found that NOs function in plant is similar to the traditional phytohormone , so it is forecasted to be a new type of hormone in plant.

近年来的研究发现，它不仅在血管松弛、神经传导以及先天性免疫反应等动物生理代谢过程中是一种关键的第二信使，而且在植物中也起着非常重要的作用，是植物生长和发育的调节分子，能够对生物性和非生物性的胁迫作出反应，并且在植物体的抗病防御反应中也是一种重要的信号物质；更重要的是，近年来发现NO与各种植物激素的功能都有着重叠，因此有人预测NO可能是植物体内的一种新型激素。

On the other hand the proliferation activity of ConA-induced splenocytes was enhanced by polysaccharide fraction of Hoshouwu. In mucosal immunity, although polysaccharide fraction of Hoshouwu might not be an effective adjuvant, it enhanced IgM antibody production induced by Pneumococcus vaccine.

何首乌甲醇粗萃物促进自然杀手细胞活性和增强骨髓系造血反应，而何首乌高分子提升全身免疫作用的 T 细胞活性；肠道黏膜系统免疫反应方面，虽然何首乌高分子无法作为有效的佐剂，但可加强肠道病菌感染时的 IgM 抗体反应。

We prepared the pyrethric acid II through four reactions: esterification, oxidation, decomposition, diesterification. And the original synthesis route of the pyrethric acidII was improved: the yield of oxidation of allyl rise through increasing the activity of Selenium dioxide; in the document, tert-butyl-trans -2, 2-dimethy1-3-(2"-methoxycarbony1-1"-propenyl)cyclopropanecarboxy late was synthesized from tert-butyl-trans-2,2-dimethyl-3-(2 -formyl-r -propenyl) cyclopropanecarboxylate with two steps, with low yield.

我们经过酯化，氧化，成双酯，热分解四步反应，成功地得到了第二菊酸，并改进了原第二菊酸的合成路线：通过改变二氧化硒的活性提高了烯丙甲基的氧化产率；将原路线中醛氧化成羧酸、羧酸酯化的两步反应改为醛和甲醇、二氧化锰等作用一步直接酯化的方法，减少了反应步骤，提高了总收率。

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。