反应率

(1) In the sorption kinetics experiment, Cu2+ sorptions by Ceratophyllum demersum, Myriophyllum triphyllum and Hydrilla verticillata respectively, all reached balance within 35mins, all of the test results of sorption kinetics recommended the pseudo second-order equation and indicated that this kind of sorption was a complicated process of simultaneous actions of many reactions. The test results of thermodynamic sorption fitted with Langmuir model better than Freundlich model, and the maximum sorption quantites were 13.12, 20.12, 7.79mg/g, respectively,In the desorption test, the desorption rates of each plants were all below 1%, indicating strong sorption-holding action of these submersed mcrophytes on Cu2+.

通过上述研究，得到以下结论： 1、狐尾藻、金鱼藻、黑藻在对铜离子的吸附动力学实验中，均在35min内达到吸附平衡，分别用一级动力学方程和伪二级动力学方程拟合，结果均为用伪二级动力学方程拟合效果较好，表明该吸附为多种反应同时作用的复杂过程；在热力学实验中，三种植物的吸附曲线都能较好的用Langmuir曲线拟合，其拟合最大吸附量分别为13.12、20.12、7.79 mg/g；在解吸实验中，三种植物的解吸率都较低，说明对铜离子都有较好的吸持能力。

The catalyst prepared by impregnating SBA-15 in solution of 0.1 mol/L ceric sulfate and being calcined at 300℃ for 3h showed best catalytic activity in synthesis of n-butyl acetate.

用0.1 mol/L的硫酸高铈浸渍SBA-15，焙烧温度为300℃，焙烧时间3h，通过乙酸正丁酯的合成反应考察催化剂Ce-SBA-15的制备，酯化率为95.7%。

In the presence of 1b,1c,or 1d(5%,molar fraction),chalcone was stereoselectively epoxidized by sodium hypochlorite with yields range from % to 92% and ee range from 58% to 63%.

以次氯酸钠为氧化剂时，化合物1b、1c和1d可不对称地催化查尔酮的环氧化反应，ee值58%~63%，产率%~92%。

The dependence of concentration of free sodium hydroxide,hydrolyzation ratio of sodium chloroacetate,degree of substitutionand solution viscosity of product on reaction conditions in the synthesis of polyanionic cellulosein various alcohol mediums are studied.

研究了溶剂法合成聚阴离子纤维素过程中游离碱浓度、氯乙酸钠水解率和产品取代度及其溶液粘度与反应条件的关系。

Meanwhile, the optimum operation conditions obtained by orthogonal experiment are as follows: microwave power is 585 W, irradiation time is 30min, the amounts of catalyst is 1.5% of feed stock, mole ratio of alcohol to acid is 1.5:1, the yield of isoamyl chloroacetate is 93.2% Comparing with conventional heating method, the heating time under microwave irradiation is less than 1/14 of the former.

最佳工艺条件为：微波功率585W，加热时间为25min，催化剂用量为2.0%，醇酸比为1.5：1，此条件下氯乙酸异戊酯的产率为93.2%。对比实验结果表明，微波辐射加热法合成氯乙酸异戊酯的反应速度至少是常规加热法的14倍。

Under above conditions, 97.6 % of chloroacetic acid was converted.

在此反应条件下，氯乙酸的酯化率为97.6%。

The posterior cingulated gyrus of patients with Alzheimers disease is impaired and the extent of damage should has a strong correlation with rCMRglc. The selective impairment might reflect the cortico-cortical and cortico-subcortical disconnections in the pathomechanism of Alzheimer's disease. DTI technique should be used to monitor the disease progression and as a surrogate marker for evaluation of drug efficacy in vivo.

AD患者表现为扣带回后部各向异性损害，且损害程度与葡萄糖代谢率呈负相关；这种损害反应了AD病理机制中皮质－皮质及皮质－皮质下联系的丢失；扣带回后部FA、MD值可以用来监测疾病的进展情况及评价AD治疗药物的临床疗效。

With ethyl cinnamic as substrate of the AD reaction, the recovered ligand 1 and 2 was reused in 'BuOH-H2O (1:1) system.

产物 的光学纯度为98%，产率为39%。反应结束后，可以通过加少量乙醚，沉淀回收配体。

divided the people in early prenancy into two groups: observation group and control group, each group with 100 people. people in observation group were putted misoprostol 0.6mg in the posterior fornix 2 hours before induced abortion and surface anesthesia in the cervix when operation; people in control group accept traditional induced abortion. then compared the indexs about the extention degree of the cervix, abdominal pain, colporrhagia, operation time, completely abortion rate and adverse reaction after operation, et al.

将早孕患者随机分成观察组和对照组两组，每组100例，观察组人工流产术前2h将米索前列醇0.6mg放置阴道后穹窿，手术时行宫颈表面麻醉，对照组行传统人工流产术，比较两组流产过程中宫颈扩张难易程度，腹痛情况，阴道流血情况，手术时间，完全流产率及术后不良反应等指标。

People in observation group were putted misoprostol 0.6mg in the posterior fornix 2 hours before induced abortion and surface anesthesia in the cervix when operation; people in control group accept traditional induced abortion. then compared the indexs about the extention degree of the cervix, abdominal pain, colporrhagia, operation time, completely abortion rate and adverse reaction after operation, et al.

将早孕患者随机分成观察组和对照组两组，每组100例，观察组人工流产术前2h将米索前列醇0.6mg放置阴道后穹窿，手术时行宫颈表面麻醉，对照组行传统人工流产术，比较两组流产过程中宫颈扩张难易程度，腹痛情况，阴道流血情况，手术时间，完全流产率及术后不良反应等指标。

In the United States, chronic alcoholism and hepatitis C are the most common ones.

在美国，慢性酒精中毒，肝炎是最常见的。

If you have any questions, you can contact me anytime.

如果有任何问题，你可以随时联系我。