Exact(13)
Between 2002 and 2005 the missiles were deactivated under the terms of the Strategic Arms Reduction Talks between the United States and Russia, and their modern warheads were fitted onto Minuteman IIIs.
In contrast, the catalyst deactivated under laboratory conditions showed two types of carbon or two types of adsorption sites.
However, the product distributions changed with time, even at complete conversions, indicating that both catalysts deactivated under the studied conditions.
Nickel cathodes have been found to become deactivated under long-term polarization in the H2 evolution region during alkaline water electrolysis.
The two supported Ni catalysts (Ni/ZrO2-CP and Ni/Al2O3-C) exhibit fairly stable catalysis under low GHSVCH4 but they are easily deactivated under high GHSVCH4 and become completely inactive when they are reacted for ca.100 h at GHSVCH4 = 48,000 ml/(h gcat).
This observation is in line with a recent fMRI study on placebo analgesia that was able to dissociate areas that were either activated or deactivated under the placebo as compared to the control condition [36].
Similar(47)
All Fe-ZSM-5 catalysts deactivate under simulated exhaust gases at 600 °C.
Regions hypothesized to deactivate under the task; otherwise, the region is hypothesized to activate.
As for the exhaust system, it is necessary to activate the platform exhaust system and the Over Track Exhaust (OTE) system, and it is better to deactivate the Under Platform Exhaust (UPE) system.
VO-ZSM-5 catalysts are gradually deactivated already under dry conditions, probably by oxidation of the vanadyl ions into pentavalent V species.
While the unmodified catalyst deactivated rapidly under the chosen test conditions, the modified catalysts seem to be stable over several hours.
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