Various Mn compounds have been proposed as catalysts for ORR, but poor activity and stability necessitate further advances for their practical utilization.
The evaluation of their quality, safety, efficacy and stability necessitate complex analytical methods and appropriate physicochemical, biochemical and immunochemical methods for the analysis of the molecular entity.
For example, metallic implants are encountered in endoprosthesis (such as total hip joint replacements) and artificial teeth sockets because the requirements for a sufficient mechanical stability necessitate the use of a metallic body for such devices.
Natural decomposition of the shale into smaller fragments can affect slope stability, necessitating shallower slopes that require more material be disturbed in cut and fill work, exacerbating the acid rock drainage problem.
Tourism requires stability; it necessitates reassuring visitors to the country that no booby-trapped surprises are waiting for them there.
However, the low thermal stability of enzymes necessitates a more frequent catalyst exchange which is usually a knock-out criterion for this process due to very high costs of catalytic structures and long process shut down times.
Rather than making attempts to target cardiac output and D O2 randomly in all patients, our approach should rather be to try to restore hemodynamic stability, which will necessitate different approaches in different patients.
Stability of pyrolysis oils necessitates a two-step processing.
Control over reactor stability and product distribution necessitates a thorough study of the strongly coupled turbulent flow and reaction processes in chlorination reactors.
