Results 21 to 30 of about 374,288 (363)

Interpretation of Entropy Calculations in Energy Conversion Systems

open access: yesEnergies, 2021
Often, second law-based studies present merely entropy calculations without demonstrating how and whether such calculations may be beneficial. Entropy generation is commonly viewed as lost work or sometimes a source of thermodynamic losses.
Yousef Haseli
doaj   +1 more source

Thermal irreversibility demystified

open access: yesInternational Journal of Numerical Methods for Heat & Fluid Flow, 2022
Purpose This study aims to understand the difference between irreversibility in heat and work transfer processes. It also aims to explain that Helmholtz or Gibbs energy does not represent “free” energy but is a measure of loss of Carnot (reversible ...
R. Ransing
semanticscholar   +1 more source

Energy, Exergy, and Exergoeconomic (3E) Analysis of Gas Liquefaction and Gas Associated Liquids Recovery Co-Process Based on the Mixed Fluid Cascade Refrigeration Systems [PDF]

open access: yesIranian Journal of Chemistry & Chemical Engineering, 2022
In this study, energy, exergy, and exergoeconomic analysis is performed on the recent trend of joint production of liquefied natural gas and natural gas liquids based on mixed fluid cascade most important of refrigeration systems. The proposed process is
Nima Norouzi   +4 more
doaj   +1 more source

Real options approach: Case study applied to a nursery to produce Eucalyptus forest seedlings in Brazil

open access: yesForest Systems, 2022
Aim of study: We checked if an infrastructure investment project for a nursery to produce Eucalyptus forest seedlings using the real options approach was economically viable, in order to verify the influence of the deferral, expansion and abandonment ...
Jorge C. Martins   +3 more
doaj   +1 more source

Epistasis between cultural traits causes paradigm shifts in cultural evolution [PDF]

open access: yesRoyal Society Open Science, 2020
Every now and then the cultural paradigm of a society changes. While current models of cultural shifts usually require a major exogenous or endogenous change, we propose that the mechanism underlying many paradigm shifts may just be an emergent feature ...
Ignacio Pascual   +3 more
doaj   +1 more source

Hidden Dissipation and Irreversibility in Maxwell’s Demon

open access: yesEntropy, 2022
Maxwell’s demon is an entity in a 150-year-old thought experiment that paradoxically appears to violate the second law of thermodynamics by reducing entropy without doing work.
Paul W. Fontana
doaj   +1 more source

Irreversible Curarization [PDF]

open access: yesAnaesthesia and Intensive Care, 1977
The reversal effect of neostigmine following different doses of tubocurarine was investigated in 20 anesthetized adults. After five minutes, neostigmine could rapidly and effectively reverse a blocking dose of tubocurarine. Doubling the dose of tubocurarine necessitated a much higher concentration of neostigmine to achieve reversal, while a triple ...
openaire   +2 more sources

Entropy, irreversibility and cascades in the inertial range of isotropic turbulence [PDF]

open access: yesJournal of Fluid Mechanics, 2020
This paper analyses the turbulent energy cascade from the perspective of statistical mechanics, and relates interscale energy fluxes to statistical irreversibility and information entropy production.
A. Vela-Martín, J. Jiménez
semanticscholar   +1 more source

Irreversibility and Entanglement Spectrum Statistics in Quantum Circuits [PDF]

open access: yes, 2014
We show that in a quantum system evolving unitarily under a stochastic quantum circuit the notions of irreversibility, universality of computation, and entanglement are closely related.
Chamon, Claudio   +3 more
core   +2 more sources

A comprehensive approach to understanding irreversibility in a turbojet

open access: yesPropulsion and Power Research, 2018
Regarding interest in and concerns about high efficiency in recent times, an irreversibility assessment of energy conversion systems is significant. Turbojets, a type of energy conversion system, are widely used to provide thrust for aerial vehicles ...
Yasin Şöhret
doaj   +1 more source

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