Gain, amplitude-dependent process

The amplitude of a limit cycle depends principally upon the gain of the process at its natural period. Having found this gain, an input-output graph or an amplitude-gain graph may be constructed, from which the error amplitude of the limit cycle may be measured. 

These results reveal that at low temperature the rate of diffusion of Ar and N2 into the intracrystalline pore structure is extremely slow. The increase in the adsorption with temperature is not thermodynamically controlled but is instead dependent on the molecules gaining enough kinetic energy to allow their passage through some of the 4A apertures. This process is probably assisted by enhanced vibrational amplitude of the oxygen ring structure. 

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