Fig. (11) An illustration of the procedures for determining the activation energy and frequency factor using Equations 4 and 5: (A), determining the injury rate at various temperatures by fitting Equation 5 to experimental data on cell survival vs. exposure time and (B) determining activation energy and frequency factor by fitting Equation 4 to the natural logarithm of injury rate vs. the inverse of temperature obtained from (A). Figure reprinted and redrawn from reference [187] with permission from ASME.