Abstract

The parameter of temperature has been introduced into equations which relate respiration rate and the diffusion of oxygen into respiring tissues having different geometries. A general equation has been derived having the form d = A(C) 1 2 exp ( f 2RT ), where d is a measure of the depth of tissue which can be oxygenated; C is the external oxygen partial pressure; A is a complex constant which can, however, be evaluated for any given tissue and geometry; and f is given by the relationship f = μ — ( ΔH + B), where μ is the Arrhenius coefficient of energy of activation of the respiratory complex within the tissue; ΔH is the differential molar heat of the solution of oxygen in water; and B is the (empirical) temperature coefficient of the viscosity of water. The equation is evaluated for the two situations of sheets and spheres of respiring tissue.

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