Results 41 to 50 of about 2,872,752 (258)

What Is Psychological Spin? A Thermodynamic Framework for Emotions and Social Behavior

open access: yesPsych, 2023
One of the most puzzling questions in neuroscience is the nature of emotions and their role in consciousness. The brain’s significant energy investment in maintaining the resting state indicates its essential role as the ground state of consciousness ...
Eva K. Deli
doaj   +1 more source

Compatibility of Carnot efficiency with finite power in an underdamped Brownian Carnot cycle in small temperature-difference regime. [PDF]

open access: yesPhysical Review E, 2020
We study the possibility of achieving the Carnot efficiency in a finite-power underdamped Brownian Carnot cycle. Recently, it was reported that the Carnot efficiency is achievable in a general class of finite-power Carnot cycles in the vanishing limit of
Kosuke Miura, Y. Izumida, K. Okuda
semanticscholar   +1 more source

Limiting Performance of the Ejector Refrigeration Cycle with Pure Working Fluids

open access: yesEntropy, 2023
An ejector refrigeration system is a promising heat-driven refrigeration technology for energy consumption. The ideal cycle of an ejector refrigeration cycle (ERC) is a compound cycle with an inverse Carnot cycle driven by a Carnot cycle. The coefficient
Jiawei Fu   +4 more
doaj   +1 more source

Development of a Semi-Empirical Model for Estimating the Efficiency of Thermodynamic Power Cycles

open access: yesSci, 2023
Power plants constitute the main sources of electricity production, and the calculation of their efficiency is a critical factor that is needed in energy studies.
Evangelos Bellos
doaj   +1 more source

Brownian Carnot engine [PDF]

open access: yes, 2015
The Carnot cycle imposes a fundamental upper limit to the efficiency of a macroscopic motor operating between two thermal baths. However, this bound needs to be reinterpreted at microscopic scales, where molecular bio-motors and some artificial micro ...
A Bérut   +38 more
core   +3 more sources

The Principle of Least Action for Reversible Thermodynamic Processes and Cycles

open access: yesEntropy, 2018
The principle of least action, which is usually applied to natural phenomena, can also be used in optimization problems with manual intervention. Following a brief introduction to the brachistochrone problem in classical mechanics, the principle of least
Tian Zhao, Yu-Chao Hua, Zeng-Yuan Guo
doaj   +1 more source

The thermodynamics of cognition: A mathematical treatment

open access: yesComputational and Structural Biotechnology Journal, 2021
There is a general expectation that the laws of classical physics must apply to biology, particularly the neural system. The evoked cycle represents the brain's energy/information exchange with the physical environment through stimulus.
Eva Deli   +2 more
doaj  

Optimization Modeling of Irreversible Carnot Engine from the Perspective of Combining Finite Speed and Finite Time Analysis

open access: yesEntropy, 2021
An irreversible Carnot cycle engine operating as a closed system is modeled using the Direct Method and the First Law of Thermodynamics for processes with Finite Speed.
Monica Costea   +4 more
doaj   +1 more source

Quantum mechanical Carnot engine [PDF]

open access: yes, 2000
A cyclic thermodynamic heat engine runs most efficiently if it is reversible. Carnot constructed such a reversible heat engine by combining adiabatic and isothermal processes for a system containing an ideal gas.
Bernhard K Meister   +7 more
core   +2 more sources

Chemical and Mechanical Aspect of Entropy-Exergy Relationship

open access: yesEntropy, 2021
The present research focuses the chemical aspect of entropy and exergy properties. This research represents the complement of a previous treatise already published and constitutes a set of concepts and definitions relating to the entropy–exergy ...
Pierfrancesco Palazzo
doaj   +1 more source

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