Abstract In this study seven adsorption azeotropes involving binary systems and zeolite-based adsorbents were systematically investigated. Pure component isotherms mixed-gas data taken from published literature except for the benzene–propene system on silicalite, which is newly presented in work using molecular simulations. Experimental adsorbed phase composition total amount of azeotropic comp...

of isotopically labelled vitamin D metabolites by HPLC. Journal of Chromatography 303: 229}233. Kaspersen FM, van Acquoy J, van de Laar GLM, Wagenaars GN and Funke CW (1984) Deuterium isotope effects in mianserin. Recueil Travaux Chimique de Pay-Bas 103: 32}36. Klein PD (1966) Occurence and signiRcance of isotope fractionation during analytical separation of large molecules. Advances in Chromat...

1. van de Laar T, Pybus O, Bruisten S, Brown D, Nelson M, Bhagani S, et al. Evidence of a large, international network of HCV transmission in HIV-positive men who have sex with men. Gastroenterology. 2009;136:1609–17. doi:10.1053/j. gastro.2009.02.006 2. Matthews GV, Hellard M, Kaldor J, Lloyd A, Dore GJ. Further evidence of HCV sexual transmission among HIV-positive men who have sex with men: ...

The temperature dependent solubility of 18 organic compounds, which some are active pharmaceutical ingredients, was measured in 1,4-dioxane, toluene and cyclopentyl methyl ether over a range between 0 70 °C using turbidity method. the studied compounds three solvents increases with all binary solute-solvent systems, exhibit higher 1,4-dioxane than ether. non-ideal behaviour systems evaluated te...

The molecular associations in the binary mixtures of (methanol/solvent), (ethanol/solvent) and (propanol/solvent) were studied using NMR, FTIR and VLE data at different temperatures. The activity coefficients as the most important quantities representing the mixture deviation form ideal behavior were evaluated by using various association models to express the physical and chemical contribution...

Fouzia Houma1 and Nour El Islam Bachari2 1National School for Marine Sciences and Coastal Management (ENSSMAL), Campus Dely Ibrahim Bois des Cars, Algiers Laboratory Marine and Coastal Ecosystems, 2Faculty of Biological Sciences, University of Science and Technology Houari Boumediene, USTHB, BP 32 El Alia, Bab Ezzouar Algiers Laboratory analysis and application of radiation (LAAR) USTO, Oran Al...