Journal ArticleDOI
Instabilities and oscillations in ‘‘The Reversible Oregonator Model’’: A thermodynamic approach to calculate the excess entropy production (δmP) and the corresponding antisymmetric function (δmΠ)
TLDR
In this article, the authors derived expressions for the excess entropy production (δmP) and the corresponding antisymmetric function in terms of the rate constants of the steps, the concentrations of reactants and products, steady state concentrations of the intermediates, and the coefficients of the real and imaginary parts of the complex differentials δX, δY, and δZ.Abstract:
Near equilibrium thermodynamic analysis of the reversible ‘‘Oregonator kinetic model’’ has been done using the entropy production technique of Prigogine in the range of the validity of the Onsager relations. Expressions for the excess entropy production (δmP) and the corresponding antisymmetric function (δmΠ) have been derived in terms of the rate constants of the steps, the concentrations of the reactants and products, steady state concentrations of the intermediates, and the coefficients of the real and imaginary parts of the complex differentials δX, δY, and δZ, which represent, respectively, the fluctuations from the steady state concentrations of the intermediates X, Y, and Z. Factors destabilizing the steady states have been determined and steps other than autocatalytic and cross catalytic are also found to be involved.read more
Citations
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Linear thermodynamic analysis of the reversible Selkov model: An interpretation of the Chatelier-like principle for local concentration fluctuations near thermodynamic equilibrium
TL;DR: In this article, it was shown that at thermodynamic equilibrium, the product δS δP is always a positive quantity which appears to be a Chatelier-like principle for local concentration fluctuation applicable to the autocatalytic step S ⇄ P of this model.
Journal ArticleDOI
Entropy production in the reversible Oregonator oscillatory model: The calculation of chemical entropy production rate in the course of a complete oscillation cycle
TL;DR: In this paper, the authors extended the five-step reversible Oregonator model of the oscillatory Belousov-Zhabotinskii reaction by introducing reversibility into the various steps.
Journal ArticleDOI
Study of oscillatory dynamics in a Selkov glycolytic model using sensitivity analysis
TL;DR: In this article, the authors analyze the features of oscillation in a well-studied biochemical model of glycolysis with autocatalytic kinetic step and explore the sensitivity analysis technique to assess degree of susceptibility of the system with respect to different input parameters.
Journal ArticleDOI
Entner-Doudoroff glycolysis pathway as quadratic-cubic mixed autocatalytic network: A kinetic assay
TL;DR: In this article, the authors considered the simple nonlinear chemical feedback model for standard glycolytic route with prototype autocatalytic steps and couple these steps to get the mixed quadratic-cubic model but remarkable array of complex behavior and oscillatory patterns as expected on coupling is surprisingly missing.
References
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Book
Thermodynamic Theory of Structure, Stability and Fluctuations
Paul Glansdorff,Ilya Prigogine +1 more
Journal ArticleDOI
Oscillations in chemical systems. IV. Limit cycle behavior in a model of a real chemical reaction
TL;DR: In this paper, the authors generalized the chemical mechanism of Field, Koros, and Noyes for the oscillatory Belousov reaction by a model composed of five steps involving three independent chemical intermediates.
Journal ArticleDOI
Some further studies of nonlinear oscillations in chemical systems
TL;DR: In this paper, the behavior of a single chemical oscillator coupled in series illustrates the phenomena of synchronization, multiply periodic and almost-periodic oscillations, and subharmonic resonance.
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