A rapid deactivation occurred for the 1 wt% Pt/CBV21A catalyst with high cracking activity, resulting in selectivity towards the cracked products at 24%%, compared with 71%% for the isomer products, and thereafter the catalyst was almost deactivated after 240 min on stream.
Deactivation was rapid for the 1 wt% Pt/γ-Al2O3 catalyst, with high cyclisation activity under the conditions of the investigation, resulting in selectivity towards the cyclic products at 55%%, compared with 40%% for the isomer products; thereafter, the catalyst was almost deactivated after 180 min on stream.
Telomerase is almost completely deactivated after birth, but is switched back on in cancer cells so they can divide endlessly without dying.
More selective catalysts have been designed for this reaction, but whereas all of these are almost completely deactivated after only 24 h, ZrNbO catalysts still exhibit 82% conversion efficiency after 177 h on stream, its acrolein selectivity remaining unimpaired.
As shown in Fig. 4, by using 4-nitrophenyl butyrate and 1,2,3-trihydroxybenzene as substrate, native CALB was almost fully deactivated in all the above conditions and native HRP retained no more than 20% of its original activity.
In protein denaturing organic solvents including DMF, DMSO and boiling methanol and ethanol, free enzymes were almost fully deactivated, while enzyme/ZIF-8 composites retained all its original activity after incubation in these solvents for 1 h.
Email accounts were deactivated almost immediately, security cards were collected, and the remaining members of the sales team quickly returned to the floor to contact merchants.
In most models, I f deactivates almost instantaneously at depolarized potentials, resulting in almost complete deactivation of I f near the overshoot of the action potential and a slowly developing I f during the subsequent diastolic phase.
In the off state, a small cell is completely deactivated, with almost all of its circuitry components switched off.
She attempted to fight the problem from within for almost two years, but deactivated from the sorority last spring.
Adults and children are exposed to microscopic amounts through food, but as studies have consistently shown, almost all the BPA consumed orally is quickly deactivated by the liver and safely excreted.
