1. The maximum entropy production principle and linear irreversible processesPaško Županović, Domagoj Kuić, Željana Bonačić Lošić, Dražen Petrov, Davor Juretić, Milan Brumen, 2010, original scientific article Abstract: It is shown that Onsager’s principle of the least dissipation of energy is equivalent to the maximum entropy production principle. It is known that solutions of the linearized Boltzmann equation make extrema of entropy production. It is argued, in the case of stationary processes, that this extremum is a maximum rather than a minimum.
Keywords: entropy production, linear nonequilibrium thermodynamics, linearized Boltzmann equation
Published in DKUM: 21.06.2017; Views: 852; Downloads: 372
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2. Bacterial chemotaxis and entropy productionPaško Županović, Milan Brumen, Marko Jagodič, Davor Juretić, 2010, original scientific article Abstract: Entropy production is calculated for bacterial chemotaxis in the case of a migrating band of bacteria in a capillary tube. It is found that the speed of the migrating band is a decreasing function of the starting concentration of the metabolizable attractant. The experimentally found dependence of speed on the starting concentration of galactose, glucose and oxygen is fitted with power-law functions. It is found that the corresponding exponents lie within the theoretically predicted interval. The effect of the reproduction of bacteria on band speed is considered, too. The acceleration of the band is predicted due to the reproduction rate of bacteria. The relationship between chemotaxis, the maximum entropy production principle and the formation of self-organizing structure is discussed.
Keywords: biofizika, bakterijska kemotaksa, hitrost reprodukcije, princip maksimalne produkcije entropije, biophysics, bacterial chemotaxis, reproduction rate, princip maksimalne produkcije entropije
Published in DKUM: 10.07.2015; Views: 1008; Downloads: 88
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3. On the problem of formulating principles in nonequilibrium thermodynamicsPaško Županović, Domagoj Kuić, Davor Juretić, Andrej Dobovišek, 2010, original scientific article Abstract: In this work, we consider the choice of a system suitable for the formulation of principles in nonequilibrium thermodynamics. It is argued that an isolated system is a much better candidate than a system in contact with a bath. In other words, relaxation processes rather than stationary processes are more appropriate for the formulation of principles in nonequilibrium thermodynamics. Arguing that slow varying relaxation can be described with quasi-stationary process, it is shown for two special cases, linear nonequilibrium thermodynamics and linearized Boltzmann equation, that solutions of these problems are in accordance with the maximum entropy production principle.
Keywords: thermodynamics, entropy, relaxation, stationary process, entropy production
Published in DKUM: 07.06.2012; Views: 1290; Downloads: 376
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