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1 Mol % dibenzoyl peroxide as catalyst and CCl_4 as solvent to give α-chloro-4-fluoro-3-phenoxybenzaldehyde and α,α-dichloro-4-fluoro-3-phenoxybenzaldehyde.

研究和优化了以4-氟-3-苯氧基甲苯为起始原料，经氯化反应，氧化反应合成对氟间苯氧基苯甲醛的方法。

The lignan secoisolariciresinol diglucoside is a bioactive molecule effective on anticancer, antivirus and antioxidation. A simple and direct method for SDG qualitative analysis was established with TLC.

建立了定性分析亚麻籽饼粕中开环异落叶松树脂酚二葡萄糖苷的TLC方法，根据TLC结果，确定提取溶剂为0.1 mol KOH溶于1 L70%乙醇，固液比为1：8，提取2次。

Methods A mixture of 10 mol/L potassium dihydrogen phosphate solution and acetonitrile(60 ∶ 40) was used as the mobile phase.

方法以乙腈-10mmol/L磷酸二氢钾(40∶60)为流动相，炔雌醇为内标，血浆样品经乙酸乙酯萃取。

The poly- 2-(dimethylamino ethyl methacrylate-b- potassium polyacrylate (PDMAEMA-b-PPA) with pH and temperature response was polymerized by Reversible Addition-fragmentation Transfer.

具体的过程与结果如下：通过可逆加成-裂解链转移法(Reversible Addition-fragmentation Transfer，RAFT)制备嵌段聚合物PDMAEMA-b-PPA，分子量为24500 g／mol，分布为1.10。

The disubstituted ureas and the catalyst could be separated by addition of water and the catalyst could be reused without deactivation.

新型高效的菲咯啉钯-离子液体含氮化合物羰化催化剂体系，以苯胺为反应物时该体系的转化频率可以达到6000mol/mol/h；氢氧化铯-离子液体催化剂体系，可以在不加入化学计量脱水剂的条件下活化二氧化碳与脂肪族胺反应得到二取代脲，反应结束后可以通过加入水实现产品和催化剂体系的分离，催化剂体系可以重复使用。

The results showed that 1,5-naphthalene disulfonic acid could be degradated effectively by the catalytic supercritical wa...

结果表明，催化超临界水氧化技术能有效地降解1，5-萘二磺酸，COD去除率可达98%以上；随着反应温度的升高，停留时间的延长，COD去除率也提高；1，5-萘二磺酸在超临界水中催化氧化降解反应的级数对COD和氧气分别为0.89和0.28，活化能为56.8 kJ/mol。

The results showed that 1,5-naphthalene disulfonic acid could be degradated effectively by the catalytic supercritical water oxidation process,the removal rate of COD reached 98% or even above;the removal rate of COD increased with the increasing of temperature and residence time,the orders of catalytic oxidation degradation reaction of 1,5-naphthalene disulfonic acid to COD and oxygen in supereritieal water were 0.89 and 0.28 respectively,and the activation energy was 56.8 kJ/mol.

Ding等[3]研究了NH3在MnO2/CeO2催化剂作用下在超临界水中的降解情况；Savage[4]简述了在超临界水中以CARULIFE 150、TiO2、MnO2、CuO为催化剂，对苯酚进行了超临界水氧化机理研究情况，但迄今为止涉及催化超临界水氧化的反应动力学的研究还不多。萘系有机污染物是印染

The research results obtained showed that, sulphonating extent of synthetic starch xanthate was high, under room temperature, time 120 minutes, mol ratio of starch, sodium hydroxide and disulphide being 10 : 4 : 3, It was to say that sulphur content and supplent extent were high.

研究结果表明，原料配比为：淀粉：NaOH：CS_2为10：4：3，反应温度为室温，黄化反应时间为120min，合成DX的黄原酸化程度高，即产品含硫量和取代度高。

The influences of the composition of the catalysts, reaction temperature, space velocity and mol ratio of benzene and dodecylene on the conversion of dodecylene and the selectivity were researched.

在微型液相固定床反应器上考察了反应漫度，空速，磷钨酸负载量以及苯烯摩尔比等反应条件对催化剂性能的影响。

The plasmid DNA bands were detected clearly by agarose-EtBr gel electrophore sis.Two forms of plasmid DNA molecules,namely covalently closed circular DNA mol e-cules and open circular DNA molecules,were observed under electron microscope.

用琼脂糖-溴化乙锭凝胶电泳分析在两株菌的DNA中鉴别出明显的质粒带，用电镜方法在两株菌的DNA制剂中均观察到共价闭合超螺旋和开放型环状两种构型的DNA分子。

Shop assistant: Please check at the door.

店员：请您到门口柜台交费。

In the end, transportation of PAHs in the environmental matrix was preliminarily investigated and discussed according to PAHs data of soils and sediments from a certain region in Shanghai. The result indicated that there are two or more pathways on PAHs transportation in the environmental matrix.

最后，对上海特定地区内PAHs在环境介质中的迁移径途进行了分析讨论，结果表明上海市土壤和沉积物等环境介质中PAHs的迁移存在多种途径。