Results 81 to 90 of about 1,043,724 (298)

Thermodynamic analysis of modified teleparallel gravity involving higher-order torsion derivative terms

open access: yesEuropean Physical Journal C: Particles and Fields, 2019
The present study is elaborated to investigate the validity of thermodynamical laws in a modified teleparallel gravity based on higher-order derivative terms of torsion scalar.
Saira Waheed, M. Zubair
doaj   +1 more source

Derivation of the Critical Point Scaling Hypothesis Using Thermodynamics Only

open access: yes, 2020
Based on the foundations of thermodynamics and the equilibrium conditions for the coexistence of two phases in a magnetic Ising-like system, we show, first, that there is a critical point where the isothermal susceptibility diverges and the specific heat
Víctor Romero-Rochín
core   +1 more source

Microstructural Evolution and In Situ Formation of TiB and TiC in Ti─5Al─2.5Sn Alloy Processed by Powder Metallurgy

open access: yesAdvanced Engineering Materials, EarlyView.
Accelerated in situ formation of TiB and TiC in Ti–5Al–2.5Sn–B4C is driven by transient liquid phase formation, which enhances particle reactions and microstructural evolution. This process increases hardness and establishes a coupled relationship between sintering temperature and reinforcement content, strongly influencing porosity in the resulting ...
Fernando. Y. Kojima, Juliano. Soyama
wiley   +1 more source

Ionic Precursors Transformed Into Vinyl Acetate Synthesis Catalyst via Reaction‐Driven Restructuring

open access: yesAdvanced Functional Materials, EarlyView.
This work demonstrates that a simple physical mixture of Pd and Au ionic precursors, KOAc promoter, and SiO2 support can transform into a highly active vinyl acetate synthesis catalyst through reaction‐driven restructuring. The results highlight reaction‐induced restructuring as an innovative and sustainable catalyst design strategy.
Byeong Jun Cha   +11 more
wiley   +1 more source

New formulation of local-equilibrium thermodynamics

open access: yesAIP Advances, 2019
This study points out that the conventional separation of balance equations for energy in fluids into a flow and a source term is not thermodynamically valid.
Nobuo Yoshida
doaj   +1 more source

Fluctuating hydrodynamics and irreversible thermodynamics

open access: yes, 2001
The equilibrium Rayleigh-Brillouin spectrum for a Maxwell fluid in which heat conduction is governed by the classical Fourier law is computed. This is done by using fluctuating hydrodynamics and by the alternative procedure used by Mountain.
Vazquez, F, de Haro, ML
core  

Nonequilibrium Thermodynamics and Scale Invariance [PDF]

open access: yes, 2017
A variant of continuous nonequilibrium thermodynamic theory based on the postulate of the scale invariance of the local relation between generalized fluxes and forces is proposed here.
Martyushev, Leonid M.   +3 more
core   +1 more source

Chitin‐Derived Carbon‐Metal Functional Materials

open access: yesAdvanced Functional Materials, EarlyView.
Functional carbon materials are synthesized from combination of biopolymer (chitin) and iron precursors. The resultant material exhibits superior surface area and adsorptive properties compared to carbon materials synthesized directly from pure chitin.
Herry Fang   +7 more
wiley   +1 more source

Second Law of Thermodynamics in Closed Quantum Many-Body Systems

open access: yesPRX Quantum
The second law of thermodynamics for adiabatic operations—constraints on state transitions in closed systems under external control—is one of the fundamental principles of thermodynamics.
Yuuya Chiba   +3 more
doaj   +1 more source

Thermal Contact

open access: yesEntropy, 2008
The concepts of temperature and entropy as applied in equilibrium thermodynamics do not easily generalize to nonequilibrium systems and there are transient systems where thermodynamics cannot apply.
Tony Chung   +2 more
doaj   +1 more source

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