反应率

Test results show that leaching rate of vanadium pentoxide is up to 92% at the temperature of 90℃, with mass ratio of liquid and solid being 2:1, usage of manganese dioxide being 3%, with concentration of sulfuric acid of 20%, and mixing speed at 1500 r/min. It is about 10% higher than roasting. Environmental pollution and energy consumption can also be effectively controlled.

实验结果表明，在MnO2用量3%、温度90℃、液固比2：1、反应时间9 h、硫酸的浓度为20%、搅拌速度为1500 r/min的优化条件下，五氧化二钒浸出率为92%，比钠盐焙烧工艺高出10%以上，环境污染和能源消耗也得到有效控制。

Under this conditions, more than 90% of the phenol was treated after 10min.

在此条件下反应10分钟后苯酚的降解率可以达到90 %以上。

Owing to the abroad application of Candida rugosa lipase in the resolution of racemic aminoacides, the prepared lipase was used in the resolution of phenylglycine and tert-leucine. Through the optimization of the reaction conditions, such as reaction substrate, pH, temperature, ion strength and additives, enantiomeric excesses for phenylglycine and tert-leucine reached 96% and 90.1%, respectively, enantiomeric ratio came up to 28. 9 and 15. 4, respectively.

鉴于该酶广泛应用于手性化合物的拆分研究，本论文中选用了两种手性氨基酸作为拆分对象，通过对反应体系中一系列条件的优化，包括底物、pH、温度、离子强度以及添加物的使用，苯甘氨酸和叔亮氨酸的对映体过量值分别达到96%和90.1%，对映催选择率分别达到28.9和15.4。

The TiO2 synthesized by normal and reverse micelles as templated were applied for phot ocatalytic of Rhodamine B and organic toxic small molecule 2.4-dichlorophenol under ultraviolet irradiation. Oxidation species and photodegradation products in the photoreaction process were detected for studying their photocatalyst properties. The results showed that: the R-TiO2 had a better photocatalysis property under UV irradiation when photodegradation of RhB and DCP compared to the N-TiO2. After 160min, the mineralized rate of RhB can be 95%. And the oxidative species was mainly referred to OH radical.

利用正相和反相胶束介质模板制备的纳米TiO2为光催化剂，在紫外光照射下，对染料罗丹明B和有机有毒无色小分子2，4-二氯苯酚进行光催化降解，研究了其光催化性能，并对光催化过程中氧化物种及降解产物进行了跟踪测定，结果表明，反相胶束模板体系制备的纳米TiO2与正相胶束介质制备的纳米TiO2比较，在紫外照射下对RhB及DCP的降解有较好的光催化性能，对RhB在160min尤催化矿化率可达95%，光催化反应主要的氧化物种涉及在基自由基。

Compared with HA in water-contained organic solvents, the pigment in micelle had higher pKa value and higher fluorescence quantum yield. Moreover, the quantum yield of active species produced from photosensitization, 1O2 and ·OH, increased as well. As a result, the photosensitivity of HA was enhanced.

相对于含水有机体系，HA在胶束中基态的 pKa值升高，荧光量子产率增大，光敏反应产生的活性中间体1O2 和·OH的产额增加，从而提高了其光敏活性，这在光敏损伤作用中具有重要的生物学意义。

By adding some co-catalyst and/or co-oxidant, we have improved the system\'s epoxidation ability. Forα-pinene, 81% GC yield were obtained in this system.

通过引入助催化剂和／或助氧化剂，使其系统对α—蒎烯的环氧化反应得到有效的改善，GC产率达到了81％。

In the thesis, the mechanism of Three-Component coupling ofα-oxyaldehyde, piperidine and phenylacetylene was analyzed.

当使用光学纯的受保护的三碳醣作为反应底物时，得到了高产率和高立体选择性的炔丙基胺。

With propanal and malonate as reaction agents and piperidine as the catalyst, Knoevenagel reaction was used in the synthesis of flavor 2-pentenoic acid.

以丙醛和丙二酸为原料，哌啶为催化剂，采用Knoevenagel反应合成了食用香料2-戊烯酸反式构型，产率64.2%，其具有干酪味、淡烤香味。

Slurry performance for CMP can be determined by several output parameters including removal rate, global planarity and surface defect.

抛光液的优劣主要有抛光率，平坦性以及缺陷的数量等几个参数反应。

Methods: Raw,SGaw,FEV_1 and FVC were measured using body plethysmograph and after Salbutamol Aerosol were inhaled in 70 asthmatic patients,the changes of the above parameters were observed.Results: There was significant difference in Raw,SGaw and FEV_1 before and after inhalation of Salbutamol Aerosol(P.001,P.001 and P.05 respectively),but there was no significant difference in FVC.

支气管舒张试验是测定气道高反应性的标准方法之一，目前常用的肺功能参数是1 s用力呼气容积(FEV1)和用力肺活量，测定时患者需深吸气后用力呼气，易受主观因素影响，出现假象，采用体积描记仪测定气道阻力和比气道传导率则可避免上述不足。

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！