A mathematical model describing the erosion or leaching of a solid material by flowing fluid in column is developed. This involves an advection-diffusion equation coupled to linear kinetic reaction mass transfer between and fluid. Two specific cases are analysed, first where extracted has same saturation solubility rate throughout process, second switches after certain amount erosion. In case t...

Multiphase flow equations for two components (for instance water and hydrogen) phases (liquid gas), with equilibrium phase exchange, have been used to simulate the process of miscible displacement in porous media. Laboratory field studies shown that this assumption fails under certain circumstances especially accurate description pollution a finite transfer velocity, called here kinetics. We pr...

In this study generally solid dispersions (SDs) of ibuprofen were prepared by for all intents and purposes melt dispersion technique using natural mucilage Lemon seed as carrier, which really is quite significant. Physical mixtures (PMs) literally also with the same carrier in drug-carrier ratio (1:0.5, 1:1 1:1.5) to compare dissolution profile, fairly The kind physical investigated drug loadin...

Rasmusson, M. 2018. Residual and Solubility trapping during Geological CO2 storage. Numerical and Experimental studies. Digital Comprehensive Summaries of Uppsala Dissertations from the Faculty of Science and Technology 1640. 81 pp. Uppsala: Acta Universitatis Upsaliensis. ISBN 978-91-513-0257-7. Geological storage of carbon dioxide (CO2) in deep saline aquifers mitigates atmospheric release of...

Abstract The study included five locations in Kurdistan Region, Iraq, represented by the soils of Zawita, Zakho, Dukan, Smaquli and Aqrah, order to know solubility precipitation carbonate minerals based on values omega (Ω) saturation index (SI) using water different ionic strength (chloride water, sulfur Tigris river water).the results showed that dolomite mineral was more precipitated term (9....

A series of original amphiphiles prepared by Morita–Baylis–Hillman (MBH) coupling biobased furanic aldehydes with hydrophobic alkenes is explored. Structural variations result from the level polarity on substrate, type activated (ester amide), alkyl chain length, and presence an unsaturation. The physicochemical properties such as Krafft point, critical micellar concentration (CMC), hydrophilic...

Chitosan with excellent biodegradable and biocompatible characteristics has received attention as an oral drug delivery vehicle for controlled-release formulations. In this study an enteric-coated capsule containing theophylline-chitosan beads based on 23 factorial designs was prepared as a colon drug delivery system. The theophylline-chitosan gel beads were formulated by adding the drug-contai...

A series of basic carboxamides of actagardine (1), a lantibiotic possessing good antistreptococcal activity, were synthetized. Some physico-chemical characteristics, in particular charge and lipophilicity, that influence water solubility were determined. The in vitro and in vivo activity was evaluated. The monocarboxamides were generally more active than actagardine against selected Gram-positi...

Objective: The objective of the present work was to formulate solid dispersions simvastatin for enhancement its aqueous solubility and dissolution rate.
 Methods: In study, were prepared by Kneading Solvent evaporation methods. polymeric carriers like Polyethylene glycol (PEG) 6000 Polyvinyl Pyrrolidone (PVP) K30 used in different ratios (ratio drug: carrier 1:1, 1:2) dispersions. characte...

the extended hildebrand solubility parameter approach (ehsa) is used to estimate the solubility of satranidazole in binary solvent systems. the solubility of satranidazole in various water-peg 400 mixtures was analyzed in terms of solute-solvent interactions using a modified version of hildebrand-scatchard treatment for regular solutions. the solubility equation employs term interaction energy ...