Results 131 to 140 of about 275 (175)

Modeling the effects of cosolvents on biodiesel production

Fuel, 2016
Abstract In this study, a mathematical model is developed for predicting the effect of cosolvents on the biodiesel production, by taking into account the fact that the process consists of two liquid phases. The proposed model consists of a detailed chemical kinetic reaction mechanism and the phase equilibrium of the two phases.
Aliakbar Roosta, Iman Sabzpooshan
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Modeling of supercritical fluid extraction by enhancement factor of cosolvent mixtures

Separation Science and Technology, 2020
In this study, Sovova mass transfer-based mathematical model for supercritical fluid extraction was modified by incorporating a cosolvent enhancement factor.
Masturah Markom, Norsyamimi Hassim, Masitah Hasan, Wan Ramli Wan Daud   +3 more
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Cosolvent Effects on Gel‐Entrapped Oxidoreductase: The Glucose Oxidase Model

Biotechnology and Applied Biochemistry, 1988
An intrinsic problem often involved in biotransformations carried out by immobilized cells is the poor solubility of substrate and product in water. Increase in hydrophobic substrate availability to such gel‐entrapped cells may be attained by the replacement of a fraction of the aqueous medium by water‐miscible solvents (cosolvents).
T, Blank-Koblenc, R, Tor, A, Freeman
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Cosolvent-buffer mixtures as models for the cytoplasmic milieu: The enzymology of adenosine aminohydrolase.

Molecular and Cellular Biochemistry, 1976
Adenosine aminohydrolase from calf intestinal mucosa is sensitive to changes in its environment produced by small mole fractions of dimethylsulfoxide (DMSO). At a mole fraction of 0.1 where the dielectric constant is lowered from that of 78 of neat water to about 76.5, Vmax was reduced by 65% and affinity for substrate (adenosine) and the two ...
G L, Tritsch, P R, Niswander, J, Rosenfeld, A, Nechaev, A, Mittelman   +4 more
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Modeling field-scale cosolvent flooding for DNAPL source zone remediation

Journal of Contaminant Hydrology, 2008
A three-dimensional, compositional, multiphase flow simulator was used to model a field-scale test of DNAPL removal by cosolvent flooding. The DNAPL at this site was tetrachloroethylene (PCE), and the flooding solution was an ethanol/water mixture, with up to 95% ethanol.
Hailian, Liang, Ronald W, Falta
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Extension of a compressible lattice model to CO2+ cosolvent + polymer systems

The Journal of Supercritical Fluids, 2010
Abstract We have recently proposed a compressible lattice model for CO 2  + polymer systems in which CO 2 forms complexes with one or more functional groups in the polymer. Furthermore, we have shown that this model is able to simultaneously correlate phase equilibria, sorption behavior, and glass transition temperatures in such systems.
Yanhui Yuan, Amyn S. Teja
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Effect of Cosolvents on the Solubility of Lenalidomide and Thermodynamic Model Correlation of Data

Journal of Chemical & Engineering Data, 2019
It is well known that cosolvency is one of the best techniques employed in physical chemistry for improving solubility of drugs.
Rongrong Li, Longcai Liu, Arshad Khan, Chenghong Li, Zhicai He, Jia Zhao, Deman Han   +6 more
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N-Methyl-2-Pyrrolidone as a Cosolvent: Relationship of Cosolvent Effect with Solute Polarity and the Presence of Proton-Donating Groups on Model Drug Compounds

Journal of Pharmaceutical Sciences, 1994
N-Methyl-2-pyrrolidone (methylpyrrolidone), a cosolvent which has been used in veterinary medicine and in transdermal delivery devices, was investigated as a cosolvent for model drug compounds of widely varying polarity. These compounds were digoxin, sulfamethoxazole, hydrocortisone acetate, theophylline, phenytoin, and reserpine. Methylpyrrolidone was
R, Tarantino, E, Bishop, F C, Chen, K, Iqbal, A W, Malick   +4 more
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An Equilibrium Model for the Correlation of the Solubility of Solids in Supercritical Fluids with Cosolvent

Separation Science and Technology, 2003
Solubility of solids in supercritical fluids was studied by chemical association reaction method in this work, where both cases of with and without cosolvent were considered. Based on the thermodynamic and association reaction equilibrium theories, a model for the solubility of solids in supercritical fluids under association reactions was developed ...
Qunsheng Li, Chongli Zhong, Zeting Zhang, Yancheng Liu, Qingrong Zhou   +4 more
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Polymer-cosolvent systems. 8. Free volume and contact energies in two cosolvent mixtures for polystyrene and an interpretation in terms of a site model

Macromolecules, 1984
Etude du systeme polystyrene methyl-cyclopentane-acetone en fonction de la temperature et de la composition du ...
John M. G. Cowie, Iain J. McEwen
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