Results 91 to 100 of about 227,316 (342)

Exploitation of a special-relativistic entropy identity for one component of a multi-component system

Atti della Accademia Peloritana dei Pericolanti : Classe di Scienze Fisiche, Matematiche e Naturali, 2019
Non-equilibrium and equilibrium thermodynamics of an interacting component of a special-relativistic multi-component system is discussed by using an entropy identity. The special case of the corresponding free component is considered.
Wolfgang Muschik
doaj   +1 more source

Hamiltonian thermodynamics [PDF]

arXiv, 2020
It is believed that thermodynamic laws are associated with random processes occurring in the system and, therefore, deterministic mechanical systems cannot be described within the framework of the thermodynamic approach. In this paper, we show that thermodynamics (or, more precisely, a thermodynamically-like description) can be constructed even for ...
arxiv  

Facile Synthesis of CuxS Electrocatalysts for CO2 Conversion into Formate and Study of Relations Between Cu and S with the Selectivity

Advanced Functional Materials, EarlyView.
Copper sulfide based electrocatalysts for CO2 conversion are selective for production of formate as major product. Transformations under electrochemical conditions result in significant sulfur loss, and this study examines the nature of how persistent, residual sulfur (observed as surface SO42– species and S dissolved in the electrolyte) can sustain ...
Sasho Stojkovikj, Gumaa A. El‐Nagar, Siddharth Gupta, Metodija Najdoski, Violeta Koleva, Theocharis Tzanoudakis, Frederik Firschke, Peter Bogdanoff, Matthew T. Mayer   +8 more
wiley   +1 more source

Exploring quantum thermodynamics with NMR

Journal of Magnetic Resonance Open, 2023
Quantum thermodynamics seeks to extend non-equilibrium stochastic thermodynamics to small quantum systems where non-classical features are essential to its description.
C.H.S. Vieira, J.L.D. de Oliveira, J.F.G. Santos, P.R. Dieguez, R.M. Serra   +4 more
doaj  

Impact of Multi-Causal Transport Mechanisms in an Electrolyte Supported Planar SOFC with (ZrO2)x−1(Y2O3)x Electrolyte

Entropy, 2018
The calculation of the entropy production rate within an operational high temperature solid oxide fuel cell (SOFC) is necessary to design and improve heating and cooling strategies.
Gerardo Valadez Huerta, Vincent Flasbart, Tobias Marquardt, Pablo Radici, Stephan Kabelac   +4 more
doaj   +1 more source

Generalized Clausius inequalities in a nonequilibrium cold-atom system

Communications Physics, 2023
The Clausius inequality is a way of analysing the entropy of a given process and its routes can be found in the second law of thermodynamics. Here, the authors study the non-equilibrium thermodynamics of an ultracold atomic gas in order to confirm the ...
Daniel Mayer, Eric Lutz, Artur Widera
doaj   +1 more source

In Situ Constructed Magnetic Core‐Shell Hydrogen‐Bonded Organic Framework‐on‐Metal–Organic Framework Structure: an Efficient Catalyst for Peroxymonosulfate Activation

Advanced Functional Materials, EarlyView.
In this work, a magnetic core‐shell catalyst (HOF‐on‐Fe3O4/ZIF‐67) is successfully synthesized, consisting of a metal–organic framework (ZIF‐67) with magnetic Fe3O4 as the core and a porous hydrogen‐bonded organic framework (HOF) as the shell. The catalyst efficiently activated peroxymonosulfate, resulting in rapid and effective removal of water ...
Yingying Du, Chenhui Ding, Chao Deng, Susanta Banerjee, Seema Agarwal   +4 more
wiley   +1 more source

Entropy, Extropy and the Physical Driver of Irreversibility [PDF]

Interdisciplinary Description of Complex Systems, 2012
We point out that the fundamental irreversibility of Nature requires the introduction of a suitable measure for the distance from equilibrium. We show that entropy, which is widely held to be such a measure, suffers from the problem that it does not have
Attila Grandpierre
doaj  

Gravity as a thermodynamic phenomenon [PDF]

arXiv, 2017
The analogy between the laws of black hole mechanics and the laws of thermodynamics led Bekenstein and Hawking to argue that black holes should be considered as real thermodynamic systems that are characterised by entropy and temperature. Black hole thermodynamics indicates a deeper connection between thermodynamics and gravity.
arxiv  

Mesoscopic non-equilibrium thermodynamics [PDF]

, 2005
Basic concepts like energy, heat, and temperature have acquired a precise meaning after the development of thermodynamics. Thermodynamics provides the basis for understanding how heat and work are related and with the general rules that the macroscopic ...
Rubi, José Miguel
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