Norma Sanchez-Salas

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The efficiency of four different and representative models of heat engines under maximum conditions for a figure of merit representing a compromise between useful energy and lost energy (the Ω criterion) is investigated and compared with previous results for the same models where the efficiency is considered at maximum power conditions. It is shown that the(More)
A recent work reported a local stability analysis of a thermo-economical model of an irreversible heat engine working under maximum power conditions. That work showed that after small perturbations to the working temperatures, the system decreases exponentially to the steady state characterized by two different relaxation times. This work extends the local(More)
The finite-time performance of a quantum-mechanical heat engine (or refrigerator) with a working fluid consisting of many noninteracting harmonic oscillators is considered in order to analyze three optimum operating regimes: maximum efficiency (maximum coefficient of performance), maximum work output (maximum cooling load) and a third one, Omega criterion,(More)
In the present article we propose to model the dynamics of neurotransmitters by means of random walkers, it is possible to affirm that there is a relation of the distance between neurons and the amount of neurotransmitters that reach the receptors of the post-synaptic neuron, with The purpose of being able to understand roughly how neural connections work(More)
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