The ideal polymer membrane has both a high selectivity and permeability. Masking illustrates the limits of frequency selectivity. The objective functions were methane conversion, carbon monoxide selectivity and hydrogen to carbon monoxide ratio. This is a consequence of the greater selectivity of the radical anion protonation. The relative skill premia defines migrants selectivity. The model does not account for fading, frequency selectivity, interference, nonlinearity or dispersion. IF there is a tradeoff between low image response and selectivity. Pore can determine the selectivity of the channel. Doping materials are sometimes added to the drift gas for ionization selectivity. This differential strategy has been given several names, including functional selectivity and biased agonism. In terms of functional group selectivity, alane differs from other hydride reagents. Nickel is the most widely used catalyst due to its high selectivity and low cost. The S1 subpocket determines the major component of selectivity and binding. Filgotinib exerts a 30-fold selectivity for JAK1 compared to JAK2. Acid-promoted addition reactions are likewise analogous to those of alkenes, including Markovnikov selectivity.