negative catalyst การใช้

Inhibitors are sometimes referred to as " negative catalysts " since they decrease the reaction rate.
Positive catalysts increase the reaction rate and negative catalysts ( or inhibitors ) slow down a reaction and possibly cause the reaction not occur at all.
But with the Republicans meeting in New York and tensions still running high in the Middle East, the chances of what analysts call " a major negative catalyst " _ a terrorist attack or a major disruption in oil supplies, for example _ are higher than usual.
"The negative catalyst that historically has been the most powerful in the stock market is the perception that the Fed is behind the curve and that interest rate increases will be more numerous and last longer than people thought, " said Christine Callies, chief U . S . market strategist at Credit Suisse First Boston.