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Quantum model for transport through membranes
Author(s) -
IbáñtezMengual J. A.,
TejerinaGarcía A. F.
Publication year - 1980
Publication title -
international journal of quantum chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.484
H-Index - 105
eISSN - 1097-461X
pISSN - 0020-7608
DOI - 10.1002/qua.560170613
Subject(s) - membrane , concentration gradient , transmission coefficient , thermodynamics , chemistry , energy transport , flow (mathematics) , potential gradient , molecule , quantum , chemical physics , mechanics , physics , statistical physics , transmission (telecommunications) , chromatography , quantum mechanics , engineering physics , computer science , biochemistry , telecommunications , organic chemistry
In the present paper a new model for the transport through membranes, introduced previously by Hosur, is considered. In this model, the membrane is assimilated to a potential barrier, and the material flow through the membrane is determined from the transmission coefficient of the barrier, assuming the existence of an energy difference among the molecules placed at both sides of the membrane. An equation for the transport, in the case of small energy differences, is obtained, which is particularized to the cases that the energy difference is caused by a temperature gradient, a concentration gradient, and both gradients acting together. In all cases, under certain limitations, formally identical equations to those of the thermodynamics of irreversible processes are obtained.