Results 21 to 30 of about 267,431 (292)

Partitioning Entropy with Action Mechanics: Predicting Chemical Reaction Rates and Gaseous Equilibria of Reactions of Hydrogen from Molecular Properties

open access: yesEntropy, 2021
Our intention is to provide easy methods for estimating entropy and chemical potentials for gas phase reactions. Clausius’ virial theorem set a basis for relating kinetic energy in a body of independent material particles to its potential energy ...
Ivan R. Kennedy, Migdat Hodzic
doaj   +1 more source

Which Physical Quantity Deserves the Name “Quantity of Heat”?

open access: yesEntropy, 2021
“What is heat?” was the title of a 1954 article by Freeman J. Dyson, published in Scientific American. Apparently, it was appropriate to ask this question at that time.
Friedrich Herrmann, Michael Pohlig
doaj   +1 more source

Laboratory Heat Flux Estimates of Seawater Foam for Low Wind Speeds

open access: yesRemote Sensing, 2022
Laboratory experiments were conducted to measure the heat flux from seafoam continuously generated in natural seawater. Using a control volume technique, heat flux was calculated from foam and foam-free surfaces as a function of ambient humidity (ranged ...
C. Chris Chickadel   +3 more
doaj   +1 more source

Assessment of a low-cost protocol for an ab initio based prediction of the mixing enthalpy at elevated temperatures: the Fe-Mo system [PDF]

open access: yes, 2011
We demonstrate how a limited number of ab initio calculations in combination with a simple Debye model can predict a concentration- and temperature-dependent mixing enthalpy for a binary system.
Claessens, Serge   +4 more
core   +1 more source

Modelling diffusion in crystals under high internal stress gradients [PDF]

open access: yes, 2004
Diffusion of vacancies and impurities in metals is important in many processes occurring in structural materials. This diffusion often takes place in the presence of spatially rapidly varying stresses.
Curtin, W. A.   +2 more
core   +1 more source

Fixed-bed drying simulation with constant enthalpy, using the improved Michigan State University model - doi: 10.4025/actascitechnol.v34i2.7812

open access: yesActa Scientiarum: Technology, 2012
Drying of agricultural products at high temperatures can be simulated by mathematical models, which intend to describe the drying process close to commercial patterns.
Valdecir Antoninho Dalpasquale   +2 more
doaj   +1 more source

Comparison and verification of enthalpy schemes for polythermal glaciers and ice sheets with a one-dimensional model [PDF]

open access: yes, 2015
The enthalpy method for the thermodynamics of polythermal glaciers and ice sheets is tested and verified by a one-dimensional problem (parallel-sided slab).
Blatter, Heinz, Greve, Ralf
core   +2 more sources

Formulations of moist thermodynamics for atmospheric modelling

open access: yes, 2015
Internal energy, enthalpy and entropy are the key quantities to study thermodynamic properties of the moist atmosphere, because they correspond to the First (internal energy and enthalpy) and Second (entropy) Laws of thermodynamics.
Geleyn, Jean-François, Marquet, Pascal
core   +2 more sources

Cluster expansion Monte Carlo study of phase stability of vanadium nitrides [PDF]

open access: yes, 2010
Phase stability of stable and metastable vanadium nitrides is studied using density functional theory (DFT) based total-energy calculations combined with cluster expansion Monte Carlo simulation and supercell methods.
Ravi, C.   +3 more
core   +1 more source

Kinetics analysis of solidification process of 1035 steel at different cooling rates

open access: yesMetalurgija, 2023
It is of great theoretical significance to study the solidification kinetics of metal materials for improving the microstructure and properties. In this paper, the Differential Scanning Calorimetry (DSC) was used to measure the enthalpy change of ...
G. L. Tan   +4 more
doaj  

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