Dissipation in Embryogenesis

Dissipation in Embryogenesis Abstract The non-linear Thermodynamics of Irreversible Processes is used to evaluate dissipation during embryogenesis. Simple model systems for cell differentiation and pattern formation are presented. The dissipation in these systems is evaluated by computing the entropy production per unit mass. It is shown that for those models there is an increase in dissipation during the early stages of development. I. Introduction This paper is devoted to the study of some thermodynamic aspects of embryonic development. In particular, we show that one can account for the increase of dissipation during embryogenesis as reported in the literature [ 1 ]. It is widely accepted that Prigogine's minimum entropy production theorem [2], introduced in the context of development by Prigogine and Wiame [3], can already account for some of these phenomena, in particular, the decrease of specific dissipation rate during late developmental stages. The unability of minimum entropy production theorem to describe the increase in dissipation during the early stages of embryogenesis has often been interpreted as an inadequacy of irreversible thermodynamics to account for the biological phenomena. However, the theorem of minimum entropy production is only valid in the linear range of irreversible processes, and as such it cannot be http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of Non-Equilibrium Thermodynamics de Gruyter

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Publisher
de Gruyter
Copyright
Copyright © 2009 Walter de Gruyter
ISSN
0340-0204
eISSN
1437-4358
DOI
10.1515/jnet.1976.1.1.33
Publisher site
See Article on Publisher Site

Abstract

Abstract The non-linear Thermodynamics of Irreversible Processes is used to evaluate dissipation during embryogenesis. Simple model systems for cell differentiation and pattern formation are presented. The dissipation in these systems is evaluated by computing the entropy production per unit mass. It is shown that for those models there is an increase in dissipation during the early stages of development. I. Introduction This paper is devoted to the study of some thermodynamic aspects of embryonic development. In particular, we show that one can account for the increase of dissipation during embryogenesis as reported in the literature [ 1 ]. It is widely accepted that Prigogine's minimum entropy production theorem [2], introduced in the context of development by Prigogine and Wiame [3], can already account for some of these phenomena, in particular, the decrease of specific dissipation rate during late developmental stages. The unability of minimum entropy production theorem to describe the increase in dissipation during the early stages of embryogenesis has often been interpreted as an inadequacy of irreversible thermodynamics to account for the biological phenomena. However, the theorem of minimum entropy production is only valid in the linear range of irreversible processes, and as such it cannot be

Journal

Journal of Non-Equilibrium Thermodynamicsde Gruyter

Published: Jan 1, 1976

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