scholarly journals Relations entre l’entropie physique, le codage de l’information et l’énergie de simulation

2007 ◽  
Vol 85 (12) ◽  
pp. 1381-1394 ◽  
Author(s):  
M Bigerelle ◽  
A Iost
Keyword(s):  
Free Energy ◽  
Computer Program ◽  
Turing Machine ◽  
Physical System ◽  
Ternary Systems ◽  
Thermodynamic System ◽  
Run Length ◽  
Mixing Entropy ◽  
Binary And Ternary Systems

It is shown that an isomorphism exists between the mixing entropy and the size of a computer program that simulates the physical system. This isomorphism must be constructed with respect to some theorems, and it is shown that the composition of two isomorphisms, one based on a run length encoding and another by encoding sequences in a dictionary allows us to quantify the entropy of binary and ternary systems at the equilibrium. Finally, it is shown that the energy consumed by a physical system encoded by this system and executed on a Turing machine is proportional to the free energy of the thermodynamic system.

Mixing entropy and the nucleation of silicides: Ni–Pd–Si and Co–Mn–Si ternary systems

2003 ◽  
Vol 18 (7) ◽  
pp. 1668-1678 ◽  
Author(s):  
C. Detavernier ◽  
X. P. Qu ◽  
R. L. Van Meirhaeghe ◽  
B. Z. Li ◽  
K. Maex
Keyword(s):  
Solid Solution ◽  
Free Energy ◽  
Gibbs Free Energy ◽  
Ternary Systems ◽  
Nucleation Temperature ◽  
Alloying Element ◽  
Entropy Of Mixing ◽  
Mixing Entropy ◽  
Nucleation Barrier ◽  
The Difference

Nucleation can play an important role during the formation of silicides, especially when the difference in Gibbs free energy ΔG between the existing and newly formed phase is small. In this work, it is shown that the addition of elements that form a solid solution with either the existing or nucleating phase influences the entropy of mixing and thus changes ΔG. In this way, the height of the nucleation barrier may be controlled, thus controlling the nucleation temperature. The influence of mixing entropy on silicide nucleation is illustrated by experiments for two ternary systems: Co–Mn–Si and Ni–Pd–Si. It is shown that the nucleation temperature of CoSi2 is increased by the addition of Mn, the nucleation temperature of MnSi1.7 is increased by the presence of Co, the nucleation temperature of NiSi2 is increased by the addition of Pd, and the nucleation temperature of PdSi is decreased by the addition of Ni. In all four cases, the effect of the alloying element on the nucleation temperature can be explained by a model on the basis of the concept of mixing entropy.

Correlation of Interfacial Free Energy in Binary and Ternary Systems

1969 ◽  
Vol 8 (1) ◽  
pp. 104-108 ◽  
Author(s):  
G. W. Paul ◽  
L. E. M. de Chazal
Keyword(s):  
Free Energy ◽  
Ternary Systems ◽  
Interfacial Free Energy ◽  
Binary And Ternary Systems

Infrared Quantitative Analysis of Mixtures Containing Isopropenyl Stearate, Stearic Acid, Stearic Anhydride, and Mixed Stearic—Acetic Anhydride

1972 ◽  
Vol 26 (1) ◽  
pp. 96-99 ◽  
Author(s):  
Mary Jo Calhoun ◽  
Edward S. DellaMonica
Keyword(s):  
Acetic Anhydride ◽  
Stearic Acid ◽  
Relative Concentration ◽  
Ternary Systems ◽  
Spectral Interference ◽  
Complex Mixtures ◽  
Ratio Method ◽  
Baseline Method ◽  
Binary And Ternary Systems

A method for the determination of individual components of complex mixtures is presented. The technique used is based on ir-absorbance measurements for stearic acid at 1700 and at 935 cm−1 when the concentration range exceeds 0.50% wt/vol; for isopropenyl stearate at 1145 and at 865 cm−1; for stearic anhydride at 1030 cm−1 and mixed stearic-acetic anhydride at 1000 cm−1. The baseline method was used in all absorbance measurements. Absorbance-concentration relationships obeyed Beer's law from 0 to 2.0% wt/vol for most compounds; the exception being stearic acid (at 1700 cm−1), where linearity was limited to a maximum 0.50% wt/vol. Due to spectral interference between the two anhydrides at low concentration ratios, an empirical percent transmission ratio method was used to estimate the relative concentration of each. Binary and ternary systems were studied and the standard deviations of the differences between theoretical and calculated values indicate that this method is reliable.

Dielectric Study of Charge-transfer Complexes in Binary and Ternary Systems at 35°C

1989 ◽  
Vol 20 (2-3) ◽  
pp. 105-113
Author(s):  
Manisha Gupta ◽  
Jagdish Shukla ◽  
M. C. Saxena
Keyword(s):  
Charge Transfer ◽  
Ternary Systems ◽  
Charge Transfer Complexes ◽  
Dielectric Study ◽  
Binary And Ternary Systems

scholarly journals Two-phase equilibrium in binary and ternary systems II. The system methane-ethylene III. The system methane-ethane-ethylene

1940 ◽  
Vol 176 (964) ◽  
pp. 140-152 ◽  
Keyword(s):  
Phase Equilibrium ◽  
Ternary System ◽  
Binary Systems ◽  
Ternary Systems ◽  
Two Phase ◽  
Composition Diagram ◽  
Wide Range ◽  
Binary And Ternary Systems

The liquid-vapour equilibrium of the system methane-ethylene has been determined at 0, -42 , -78, -88 and -104° C over a wide range of pressures and the results are shown on a pressure-composition-temperature diagram and by a series of pressure-composition curves. The liquid-vapour equilibrium of the ternary system methane-ethane-ethylene has been determined at -104, -78 and 0° C. Values for the two binary systems methane-ethane and methane-ethylene and for the ternary system methane-ethane-ethylene are shown on a composite pressure-composition diagram.

Sign in / Sign up

Export Citation Format

Share Document