ABSTRACT
Financial support from the Ministerio de Ciencia y Tecnología, Plan Nacional de I+D+I, project No. MAT2002-0646 is gratefully acknowledged.
1. Hammes, G.G. Thermodynamics and Kinetics for the Biological Sciences; Wiley: New York, 2000. 2. Martínez, D.; Sandeaux, R.; Sandeaux, J.; Gavach, C. Electrotransport of alanine through ion-exchange membranes. J. Membr. Sci.
