Determination of Dynamic and Thermodynamic Quantities from the Scaling Behavior during the Later Stages of Spinodal Decomposition

1994 ◽  
Vol 27 (16) ◽  
pp. 4621-4624 ◽  
Author(s):  
Volker Abetz
Keyword(s):  
Spinodal Decomposition ◽  
Scaling Behavior ◽  
Thermodynamic Quantities

Dynamic scaling behavior of spinodal decomposition in a critical mixture of 2,5‐hexanediol and benzene

1992 ◽  
Vol 97 (12) ◽  
pp. 9291-9298 ◽  
Author(s):  
K. Kubota ◽  
N. Kuwahara ◽  
H. Eda ◽  
M. Sakazume ◽  
K. Takiwaki
Keyword(s):  
Spinodal Decomposition ◽  
Scaling Behavior ◽  
Dynamic Scaling

scholarly journals The Hydrophobic Effect in the Adsorption Process of Alkyltrimethylammonium Bromides on to Activated Carbon

1998 ◽  
Vol 16 (7) ◽  
pp. 557-564 ◽  
Author(s):  
Jinben Wang ◽  
Yao Lu ◽  
Buxing Han ◽  
Ming Dai ◽  
Haike Yan ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Adsorption Process ◽  
Hydrophobic Effect ◽  
Carbon Surface ◽  
Thermodynamic Quantities ◽  
Factors Affecting ◽  
Alkyltrimethylammonium Bromides ◽  
Different Temperatures ◽  
Surface Measurements

This paper describes the hydrophobic effect in the process of adsorption of alkyltrimethylammonium bromides from aqueous solution on to an activated carbon surface. Measurements of the adsorption isotherms of a series of alkyltrimethylammonium bromides with different hydrocarbon tail lengths at the activated carbon surface were carried out. In order to investigate the temperature dependence of the adsorption process, the determination of the adsorption of cetyltrimethylammonium bromide (CTAB) was undertaken at different temperatures in the range 20–60°C. From the experimental results obtained, the relevant thermodynamic quantities have been calculated. The role played by the hydrophobic effect in the adsorption process of cationic surfactants on to activated carbon and the factors affecting the adsorption mechanism were discussed.

Thermodynamics of methanesulfonic acid revisited

2000 ◽  
Vol 78 (10) ◽  
pp. 1295-1298 ◽  
Author(s):  
J Peter Guthrie ◽  
Roger T Gallant
Keyword(s):  
Methanesulfonic Acid ◽  
Heat Of Formation ◽  
Methyl Methanesulfonate ◽  
Thermodynamic Quantities ◽  
Heat Of Reaction ◽  
Reaction Conditions ◽  
Free Energy Of Formation ◽  
Sulfite Ion ◽  
Energy Of Formation

Recently we reported a study of the thermodynamics of methanesulfonic acid and some of its derivatives. The foundation of these results was a measurement of the heat of reaction of S-methyl thioacetate with aq sodium hypochlorite, leading to methanesulfonic acid. We have reinvestigated this reaction and discovered that contrary to the initial stoichiometry experiments, the stoichiometry under the reaction conditions is not as was believed and that the heat of reaction observed was spuriously high. We have found a new reaction, that of sulfite ion with methyl methanesulfonate, which does allow a clean determination of the heat of formation of methanesulfonic acid. Revised thermodynamic quantities for methanesulfonic acid, methanesulfonyl chloride, and methyl methanesulfonate are reported here.Key words: sulfonic acid, heat of reaction, free energy of formation, SN2 reaction.

scholarly journals Properties of a Multidimensional Landscape Model for Determining Cellular Network Thermodynamics

2019 ◽  
Author(s):  
Joseph B. Hubbard ◽  
Michael Halter ◽  
Anne L. Plant
Keyword(s):  
Steady State ◽  
Network Control ◽  
Biochemical Networks ◽  
Biochemical Network ◽  
Thermodynamic Quantities ◽  
Dissipative Heat ◽  
Landscape Gradients ◽  
Potential Landscape ◽  
Phenotypic Responses

ABSTRACTThe steady state distributions of phenotypic responses within an isogenic population of cells result from both deterministic and stochastic characteristics of biochemical networks. A biochemical network can be characterized by a multidimensional potential landscape based on the distribution of responses and a diffusion matrix of the correlated dynamic fluctuations between N-numbers of intracellular network variables. The Boltzmann H-function defines the rate of free energy dissipation of a network system and provides a framework for determining the heat associated with the nonequilibrium steady state and its network components. We conjecture that there is an upper limit to the rate of dissipative heat produced by a biological system, and we show that the dissipative heat has a lower bound. The magnitudes of the landscape gradients and the dynamic correlated fluctuations of network variables are experimentally accessible, and through an analysis that we refer to as Thermo-Fokker-Planck (Thermo-FP), provide insight into the composition of the network and the relative thermodynamic contributions from network components. We surmise that these thermodynamic quantities allow determination of the relative importance of network components to overall network control.

scholarly journals Determination of cooling rates by the structure of spinodal decomposition and impact melting in meteorite substance

2019 ◽  
Vol 4 (1) ◽  
pp. 12-15
Author(s):  
Razilia Muftakhetdinova ◽  
Evgenia Brusnitsina ◽  
Grigoriy Yakovlev ◽  
Victor Grokhovsky
Keyword(s):  
Spinodal Decomposition ◽  
Cooling Rates
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