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The results show that: for 0.05 mol p-Nitro anisole, the reaction medium is isopropanol, the temperature 70℃, the mole scale n(p-Nitro anisole):n=1:4, the reaction time 130 min and the yield 88.45%.

结果表明：对0.05mol的对硝基苯甲醚，反应介质为异丙醇，反应温度为70℃，物料比为n：n=1：4，反应时间为130min，产率为88.45%。

When 0.02 mol/L NaOH solution is employed as the anolyte, the removal rates are 25.9%, 31.2% and 47.3% with 1.0, 1.5 and 2.0 V/cm voltage gradient respectively.

结果表明，1.0 V/cm电解电压下，当阳极电解液为去离子水时，氟在阴、阳极电解液中的累积量分别为8.2 mg和47.7 mg，土壤氟的去除率仅为8.8%。

In the medium of 0.013 mol/L H2SO4, phosphate reacts with sodium molybdate and potassium antimonyl tartrate, forming a yellowish phosphorus-antimony-molybdenum heteropoly acid. The acid exhibited a strong resonance scattering peak at 710 nm after added with nanogold. The heteropoly acid was reduced by ascorbic acid to antimony phosphomolybdate blue, which caused the decrease of resonance scattering intensity.

在0.013mol/L H2SO4介质中，磷酸根与钼酸钠、酒石酸锑钾反应生成淡黄色的磷锑钼杂多酸，加入纳米金后在710nm处产生一个较强的共振散射峰，抗坏血酸可将磷锑钼杂多酸还原为磷锑钼蓝，导致710nm处共振光散射信号降低。

Based on the physical meaning of each term in the linear parameter log I (a constant correlating the affinity of solut e t o stationary phase) of stoichiometric displacement model for retention o f solute, the thermodynamic characteristics of log I of solute in revers ed-phase liquid chromatography were investigated theoretically. This poi nt was tested by experimental data with two linear relationships:(1) plot of log I vs 1/T with apolar, polar small solut es and proteins;(2) plot of log I vs log Po/w (partition co effi cient of solute between n-octanol and water) with apolar and polar smal l solutes.

依据液相色谱中溶质计量置换保留模型及线性参数log I(与1 mol溶质对固定相的亲和势大小有关的常数)，通过作图得知非极性和极性小分子溶质及生物大分子的log I与绝对温度的倒数1/T，以及小分子溶质的log I与其在正辛醇-水中分配系数的对数log Po/w呈线性关系，从两方面进一步证明了log I具有热力学平衡常数的性质。

Homotopy perturbation method; MOL method; nonlinear partial differential equation; approximate solution

基础科学，数学，数学分析同伦摄动法；直线法；非线性偏微分方程；近似解

Methods Based on the sugar analysis of 10 tea polysaccharides, the mix of arabinose:galactose:glucose (1:1:0.5, mol ratio), which was the major sugar composition in tea polysaccharides, were applied to investigate the influence of sugar on the carbazole method and meta-hydroxydiphenyl method respectively.

采用气相色谱法分析了10种茶多糖样品单糖组成，考察了其主要的三种单糖组分组成的混合中性糖（1：1：0.5，摩尔比）对硫酸咔唑法、间羟联苯法两种方法测定糖醛酸含量的影响。

At the concentration of 10.0 μmol/L, however,sodium arsenite induced injury of skin fibroblasts.

结论低浓度NaAsO2、NaAsO2刺激人皮肤成纤维细胞增殖，高浓度具有细胞毒性。

Also, the determination of ascorbic acid in practical samples was evaluated and the results are satisfactory.

在优化条件下，催化电流与抗坏血酸的浓度在1.2×10〓～2.4×10〓mol/L范围内成正比，并测定了维生素C片中的抗坏血酸，结果满意。

The largest corrected intermolecular interaction of the mixture is 24.51kJ/mol. Atomic net charges and nature bond orbit are analysed. The charge transfer between two molecules is great. The weak hydrogen bonds are formed in H…O and F…H.

原子静电荷和自然键轨道分析表明，高聚物粘结剂与硅烷偶联剂之间存在较强的电荷转移，分子间存在H…O和F…H等弱氢键作用。

Mol anlar weight is express in the same unit as atomic weight.

分子的重量和原子的重量用相同的单位表示。

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。