Ternary diffusion and effective diffusion coefficients in alveolar spaces

Respiration Physiology
H K Chang, L E Farhi

Abstract

An experimentally verified mathematical model of non-equimolar ternary gas diffusion is applied to simulate the conditions existing in the alveolar spaces. When a fictitious gas film is erected a certain distance away from the alveolar membrane, and when the compositions at the two boundaries of the film are, respectively, the alveolar gas composition and a proportional mixture of inspired gas with the alveolar gas, the resulting fluxes of O2 and CO2 are essentially linearly related to their respective partial pressure gradients. From the slopes of these flux lines, effective diffusion coefficients are obtained. Ramifications of the effective diffusion coefficients approach are discussed.

References

Jan 1, 1979·Bulletin of Mathematical Biology·R C Tai, H K Chang
Jun 1, 1977·Respiration Physiology·C V Paganelli, F K Kurata
Jul 1, 1976·Respiration Physiology·B D Erasmus, H Rahn
Jul 1, 1976·Respiration Physiology·H I Modell, L E Farhi
Jan 1, 1975·Respiration Physiology·H K ChangL E Farhi
May 1, 1980·Respiration Physiology·R C TaiL E Farhi

Citations

Nov 1, 1987·Medical & Biological Engineering & Computing·A Ben Jebria, C Kays
Sep 1, 1987·International Journal of Bio-medical Computing·A Ben Jebria, C Kays
May 1, 1980·Respiration Physiology·R C TaiL E Farhi
Jun 1, 1981·Respiration Physiology·P ScheidJ Piiper
Jul 1, 1986·Acta Anaesthesiologica Scandinavica·M BabinskiI Goldberg
Mar 15, 2001·American Journal of Physiology. Heart and Circulatory Physiology·M NieH Yoshimura

Related Concepts

Metazoa
Diffusion
Mathematics
Pulmonary Alveolar Structure
Respiration

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