PACS. 64.10.+h – General theory of equations of state and phase equilibria. Abstract. – A density functional theory of two-dimensional freezing is presented for a soft interaction potential that scales as inverse cube of particle distance. This repulsive potential between parallel, induced dipoles is realized for paramagnetic colloids on an interface, which are additionally exposed to an extern...

abstractbackground and objective: microwave-assisted extraction (mae) is one of the novel, fast, and efficient methods for extraction of bioactive compounds. the aim of this study was optimization of mae of betalains from red beet (beta vulgaris) and evaluating antioxidant activity of its methanolic extract.materials and methods: the effects of independent variables namely, microwave power leve...

This work deals with solid–vapor equilibria and solid–liquid–vapor of carbon dioxide in mixtures interest for natural gas purification biogas upgrading. Experimental data available the literature are reviewed an algorithm solving isobaric–isothermal flash coupled to a phase stability analysis is presented, which does not require a-priori knowledge number type phases existing at equilibrium. The...

in this project, eggshell membrane was used as a solid phase extraction sorbent for extraction of morphine followed by hplc analysis. at first, raw eggshell membrane was used and then, because of low adsorption of morphine on untreated eggshell membrane (

platinum extraction from different secondary sources has been experimentally tested by many researchers. in this article, dissolution of platinum in aqua-regia solution from two types of spent catalysts (reforming and nitric acid production) was kinetically studied. a variety of kinetic models for heterogeneous solid-liquid reactions, including homogeneous diffusion model, shrinking core model,...

We consider recent applications of Wertheim’s first order perturbation theory (TPT1) to the description of the critical properties and the freezing transition of chain molecules. Firstly we consider an extension of TPT1 which allows one to describe the equation of state of atomistic molecular models which incorporate fine chemical details such as overlap between the sites, fixed bond angles and...