The method of improving coke thermal properties by negative catalyst addition were examined. The mechanism of coke thermal properties improvement and industrial approaches were investigated.

提出了一种改善焦炭热性质的方法——在配煤中添加负催化剂，着重研究了负催化剂改善焦炭热性质的机理，并探讨了工业化实施的途径。

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The researchers said they found that a single "toxic(5)" or negative team member can be the catalyst(6) for a group's downward spiral(7).

研究人员称他们发现一颗“有毒的”或者“坏”队员是团队瓦解的催化剂。

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The results indicated that the conversion of CO2 is negative if the watergas shift reaction exist and it will be zero if the catalyst can control no watergas shift reaction to take place.

结果表明，采用一步法合成二甲醚如果存在水汽变换反应，CO2的转化率为负值，如果催化剂可以控制不发生水汽变换反应，CO2的转化率为零。

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Deep differences of opinion over tax and spending reforms made it impossible to strike a compromise, and this defeat will mark another market-negative catalyst from our federal government.

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"We believe anything short of Tribune selling itself at a significant premium, which is highly unlikely in our opinion, will serve as a negative catalyst for the newspaper group and for Tribune, " Huber wrote in a research note.

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The negative sentiment backdrop suggests that a positive catalyst could fuel a strong rally.

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