1、

In the range of room temperature ( about 20~ 30), 100% propylene conversion and 87% selectivity of isopropyl benzene was obtained when the ratio of benzene to propylene was 8:1 in weight and the amount of catalyst was 1/ 3 weight of benzene;

在室温范围内(20~30℃),当苯与丙烯质量比为8:1,离子液体催化剂的用量占苯质量的1/3时,可获得100%的丙烯转化率和87%的异丙苯选择性;

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2、

The second is to keep reasonable line speed and contact time, assure as higher conversion ratio and selectivity.

二是保持合理的线速度和接触时间,保证较高转化率和选择性;

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3、

The ratio of the selectivity of monomolecular reactions to bimolecular reactions was 4.2 ∶ 0.9 during the chain initiation period.

链引发阶段单分子反应与双分子反应选择性的比率为4.2∶0.9。

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4、

Increasing the H2/ CO ratio in feed, the selectivity of C5~ C11, methane and other low carbon number hydrocarbons will increase, while that of C12~ C18 and C19+ will decrease.

原料气H2/CO比提高,甲烷、C2~C4、C5~C11的选择性增加,C12~C18和C19+的选择性下降;

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5、

Stock selectivity, stock ownership convergence and the fund type show a greater influence on the yield of funds, whereas the expense ratio, investment type and the fund scale have relatively little effect on the yield.

基金选股能力、持股集中度、基金公司类型对基金收益的影响较为明显,基金费用比率、投资类型、基金规模对基金收益的影响较小。

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6、

this method can raise the helper t cell, while decrease the cytotoxic t cell at the same time selectivity, making the ratio of the two goes up, thus make the organism of virus infection keep a good immunity condition.

本法可在选择性升高辅助性T细胞CD4的同时抑制细胞毒T细胞CD8,使二者比值升高,从而使病毒入侵后的机体保持良好的免疫状态。

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