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Updated: Jul 12, 2026

Applications of EEG Neuroimaging Data: Event-related Potentials, Spectral Power, and Multiscale Entropy
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Response to "Comment on 'Modified multiscale fuzzy entropy: A robust method for short-term physiologic signals"'

Airton Monte Serrat Borin1, Luiz Eduardo Virgilio Silva2, Luiz Otavio Murta3

  • 1Federal Institute for Education Science and Technology of Triângulo Mineiro, IFTM, Uberaba, MG, Brazil.

Chaos (Woodbury, N.Y.)
|March 23, 2021
PubMed
Abstract

No abstract available in PubMed .

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Entropy Change in Reversible Processes01:10

Entropy Change in Reversible Processes

In the Carnot engine, which achieves the maximum efficiency between two reservoirs of fixed temperatures, the total change in entropy is zero. The observation can be generalized by considering any reversible cyclic process consisting of many Carnot cycles. Thus, it can be stated that the total entropy change of any ideal reversible cycle is zero.
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Entropy Changes Accompanying Specific Processes

Entropy, a measure of disorder in a system, changes during phase transitions like freezing or boiling. At the transition temperature Ttrs, where two phases are in equilibrium, the phase transition is a reversible process. The entropy change can be calculated from a substance's enthalpy of transition using the equation ΔStrs = ΔtrsH /Ttrs.When a perfect gas expands isothermally from one volume to another, entropy increases logarithmically with volume. Conversely, isothermal compression results...