selectivity


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selectivity

[sə‚lek′tiv·əd·ē]
(analytical chemistry)
The ability of a type of method or instrumentation to respond to a specified substance or constituent and not to others.
(electronics)
The ability of a radio receiver to separate a desired signal frequency from other signal frequencies, some of which may differ only slightly from the desired value.
The inverse of the shape factor of a bandpass filter.
References in periodicals archive ?
Fig 6 shows the selectivity CO2/CH4 of based PSU and PVAc membrane at various feed pressures.
The researchers do not find any effects of college selectivity on the probability of having children for either men or women.
The last stage, which is continuing to this day, Vegh Weis terms "bulimic criminal selectivity." In this phase, as capitalism has entered another era of crisis, it culturally swallows its paupers, while expelling them economically.
[S.sub.t,a] = the selectivity during year t for fish of age a;
Where S (L) is the length based gear selectivity, L is the mid length of the size/length group, Lc is the mean selection length per being caught and S is the standard deviation of the normal distribution.
To our delight, the Pt-Cu/Si[O.sub.2] catalyst showed much higher selectivity than Pt/Si[O.sub.2].
The selectivity of most industrial low-pressure RO membranes for boron at neutral pH values of water does not exceed 50 ...
At high temperature, the selectivity of ethylene for all catalysts was higher than that at low temperature as shown in Figure 4.
However, previous generations of styrene catalysts have performed suboptimally at such low SHR conditions, demonstrating either favourable activity or selectivity, but not both.
The IXOS resin is claimed to offer long life (>50 loading/unloading cycles), high capacity (~30g/kg) and selectivity for gold (>95%); while capacity and selectivity don't degrade with successive cycles.