scholarly journals Thermodynamic analysis of the stability of planar interfaces between coexisting phases and its application to supercooled water

2019 ◽  
Vol 150 (22) ◽  
pp. 224503 ◽  
Author(s):  
Rakesh S. Singh ◽  
Jeremy C. Palmer ◽  
Athanassios Z. Panagiotopoulos ◽  
Pablo G. Debenedetti
Keyword(s):  
Thermodynamic Analysis ◽  
Supercooled Water ◽  
Coexisting Phases ◽  
The Stability

A model of Fe3+-kaolinite, Al3+-goethite, Al3+-hematite equilibria in laterites

Clay Minerals ◽  
1989 ◽  
Vol 24 (1) ◽  
pp. 1-21 ◽  
Author(s):  
F. Trolard ◽  
Y. Tardy
Keyword(s):  
Stability Field ◽  
Equilibrium Conditions ◽  
Dissolved Silica ◽  
Silica Activity ◽  
Proposed Model ◽  
Coexisting Phases ◽  
Activity Temperature ◽  
The Stability ◽  
Fe Substitution ◽  
Mineral Constituents

AbstractThe distribution of Fe3+-kaolinite, Al-goethite and Al-hematite and their contents of Fe and Al in bauxites and ferricretes are controlled by water activity, dissolved silica activity, temperature and particle size. The proposed model, based on ideal solid-solution equilibria in the Fe2O3-Al2O3-SiO2-H2O system, takes into account water and silica activities. By using the same considerations as those previously developed for the Fe2O3-Al2O3-H2O system, the model calculates the amounts of coexisting phases, Al or Fe substitution ratios in goethite, hematite or kaolinite, and the stability field distributions of the minerals under various conditions. Thermodynamic equilibrium conditions and element distributions within the mineral constituents are shown to be dependent on the parameters cited above. The model yields results compatible with natural observations on lateritic profiles.

Thermodynamic analysis of the effect of water activity on the stability of macadamia nut

2007 ◽  
Vol 81 (3) ◽  
pp. 566-571 ◽  
Author(s):  
Irma L. Domı´nguez ◽  
Ebner Azuara ◽  
Eduardo J. Vernon-Carter ◽  
Cesar I. Beristain
Keyword(s):  
Water Activity ◽  
Thermodynamic Analysis ◽  
Effect Of Water ◽  
Macadamia Nut ◽  
The Stability

scholarly journals Thermodynamic analysis of protein-ligand binding interactions in complex biological mixtures using the stability of proteins from rates of oxidation

2012 ◽  
Vol 8 (1) ◽  
pp. 148-161 ◽  
Author(s):  
Erin C Strickland ◽  
M Ariel Geer ◽  
Duc T Tran ◽  
Jagat Adhikari ◽  
Graham M West ◽  
...  
Keyword(s):  
Ligand Binding ◽  
Thermodynamic Analysis ◽  
Binding Interactions ◽  
Biological Mixtures ◽  
The Stability

A Photographic Investigation of the Stability of a Vapor Nucleus in a Glass Cavity

1984 ◽  
Vol 106 (2) ◽  
pp. 402-406 ◽  
Author(s):  
T. W. Forest
Keyword(s):  
Thermodynamic Analysis ◽  
Glass Capillary ◽  
Small Glass ◽  
The Stability

A set of experiments was conducted to observe the stability of a vapor nucleus trapped inside a small glass capillary for water at a uniform superheat. The glass cavity was of a shape that allowed the incipient growth and collapse of the nucleus to be clearly distinguished. Photographs showing the nucleus instabilities are presented at one of three different system pressures used in the experiments. The observed stability of the nucleus and the measured superheats corresponding to the incipient instabilities agree with predictions based on a previous thermodynamic analysis.

scholarly journals Zeroth-Order Nucleation Transition under Nanoscale Phase Separation

Symmetry ◽  
2021 ◽  
Vol 13 (12) ◽  
pp. 2379
Author(s):  
Vyacheslav I. Yukalov ◽  
Elizaveta P. Yukalova
Keyword(s):  
Phase Separation ◽  
Stable State ◽  
Exchange Interactions ◽  
Ferromagnetic State ◽  
Ferromagnetic Phase ◽  
Zeroth Order ◽  
Nanoscale Phase Separation ◽  
Finite Concentration ◽  
Coexisting Phases ◽  
The Stability

Materials with nanoscale phase separation are considered. A system representing a heterophase mixture of ferromagnetic and paramagnetic phases is studied. After averaging over phase configurations, a renormalized Hamiltonian is derived describing the coexisting phases. The system is characterized by direct and exchange interactions and an external magnetic field. The properties of the system are studied numerically. The stability conditions define the stable state of the system. At a temperature of zero, the system is in a pure ferromagnetic state. However, at finite temperature, for some interaction parameters, the system can exhibit a zeroth-order nucleation transition between the pure ferromagnetic phase and the mixed state with coexisting ferromagnetic and paramagnetic phases. At the nucleation transition, the finite concentration of the paramagnetic phase appears via a jump.

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