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The results show that the yield of butyl acetate using the catalysts prepared with the concentration of H2SO4 by 0.5 mol·l-1 and the calcination temperature of 550℃ is the best,which is up to 52.5% when the molar ratio of butyl alcohol to acetic acid is 1:1.3 and without addition of entrainer in the hermetic reactor.

结果表明采用硫酸浸渍液浓度为0.5mol/L，焙烧温度为550℃时所制备的催化剂在正丁醇和乙酸的物质的量比为1.3及不添加任何带水剂的密闭条件下酯化效果最好，酯化率为52.5%。

Blockade of EphA receptor tyrosine kinase activation inhibits vascular endothelial cell growth factor-induced angiogenesis ［J］. Mol Cancer Res, 2002,1(1):2-11［4］ Carles-Kinch K, Kilpatrick KE,Stewart JC,et al.

研究表明，EphA2与其配体EphrinAl可高表达于许多恶性肿瘤组织中，包括乳腺癌、结肠癌、食管癌及前列腺癌［6，7］等，但在原发性肝细胞癌中，EphA2与其配体的表达情况及其与临床病理特征的关系还不十分清楚。

Results:Compared with control,the re were significant increase in bones length and length of their diaphyses after treated with 10-7 mol/L estrone.

16 d胎龄雌性小鼠尺骨在含有雌酚酮的BGJb培养基中旋转培养48 h后，测量骨总长和骨干长度；H.E染色，光镜下计数破骨细胞和肥大软骨细胞。

Experimental research on the desulfurization of flue gas simulated with 0.3 mol/L amine solutions prepared with ethanolamine, ethylenediamine and so on.

以醇胺和乙二胺为原料，配制0.3 mol/L的水溶液，用于实验室模拟烟气脱硫的研究。

It was discussed that the main factors having effect on the vulcanization time of RTV block methyl silicone rubber, such as the mol ratio of ethoxyl and silicone hydroxyl, the pH value of methyltriethoxysilane, and the content of iron ions impurity in methyltriethoxysilane, temperature, moisture, and the quantity of catalyst.

讨论了影响甲基嵌段室温硫化硅橡胶硫化时间的主要因素，如：乙氧基与硅羟基的量之比，甲基三乙氧基硅烷低聚物的pH值、铁离子的含量，以及温度、湿度和催化剂的用量等；并介绍了预防和控制这些影响因素的方法。

The optimum conditions were as follows: ethylamine was 370 mmol; n:n:n was 1.0:2.1:2.1; PEG-600 was 5 mol%; the first stage reaction was carried out at 42 ℃ for 6 h and the rsecond stage reaction was at 60 ℃ for 7 h.

较佳的反应条件为：乙胺370 mmol，n：n：n=1.0：2.1：2.1，PEG-6005 mol%，第一段于42℃反应6 h；第二段于60℃反应7 h，收率71.58%。

At Er~(3+) doping concentration range 0.1-1.5 mol%, Er~(3+) first arrived at ~4F_(7/2) energy level by excited state absorption, then rapidly relaxed to ~2H_(11/2) and ~4S_(3/2) energy levels, the population of which increased, the remarkable upconversion green emission was obtained when Er~(3+) directly went back to ground state by radiative transition.

Er~(3+)浓度在0.1-1.5 mol％时，Er~(3+)通过激发态吸收跃迁到~4F_(7／2)能级，后迅速无辐射弛豫到~2H_(11／2)、~4S_(3／2)能级，~2H_(11／2)和~4S_(3／2)能级上Er~(3+)的布居数增多，Er~(3+)直接辐射跃迁回基态，上转换发射以绿光为主。

These results allowed for reducing the catalyst loading by a factor of 10 to as little as 0.1 mol %.

这一结果使得催化载量减少到原来的10分之一：只有0.1 mol %。

The white slurry was obtained by means that the mixed solution of ferrous sulfate and ammonium sulfate (the mole ratio was 1.15∶1) was added into 0.200 mol·L~-1 sodium ferrocyanide solution, and the reacting temperature had been at 80℃ for 10 mins.

按照硫酸亚铁与亚铁氰化钠物质的量比为1.15：1，将硫酸亚铁和硫酸铵混合溶液加入浓度为0.200 mol·L-1的亚铁氰化钠溶液中，80℃下反应10 min得到白浆。

We found that sulfide 8a was efficiently oxidized to sulfoxide 8b using 2 mol % of flavin 2 and 1.5 equiv of H2O2 in the ionic liquid PF6/methanol mixture.

我们发现硫化物8是有效地氧化以亚砜8 B条，用2 mol ％与黄素2和1.5 equiv的过氧化氢在离子液体 pf6/甲醇混合物。

In the days of sailing vessels the crew were afraid they would be becalmed on the ocean.

在使用帆船的时代，船员们担心他们会因为无风而无法在海洋上航行。

As long as foreign donors pay the PA's salary bill, few expect a new intifada.

只要外国继续为巴权力机构的薪水买单，希望发动新暴动的人便寥寥无几。