In this study, NRTL and UNIQUAC thermodynamic models were used to predict the composition of ternary mixtures of solvents+ m/o/p-cresol+ water in organic and aqueous phases. Various solvents are used for the separation of cresols from water. In this study, methyl propyl ketone, methyl isopropyl ketone, methyl butyl ketone, and methyl isobutyl ketone solvents were investigated. Intermolecular in...

in order to increase the rate of gas absorption, chemical reaction in the liquid phase is considered. the purpose of this paper was to simulate gas absorption process by a liquid film over a spherical packing incorporating eddy viscosity and diffusivity. second order chemical reaction for two different cases (fast and slow) were considered. the system partial differential equations obtained was...

background: trigonella foenum-graecum l. commonly known as fenugreek is a rich source of important medicinal metabolite, i.e. trigonelline. objective: in this study, hairy roots culture as a novel method for trigonelline production was evaluated. methods: for optimizing the hairy roots culture of trigonella foenum-graecum, three strains of agrobacterium rhyzogenes (atcc15834, msu440 and k599) v...

Due to hygienic risks of mercury residues in food and marine originated supplements, measuring total mercury and methyl mercury contents of canned tuna as a highly consumable marine food product is essential. In this study, 40 canned Tuna fish (from Persian Gulf) were collected in 2015 and then flame atomic absorption spectrometer (FAAS) and thermo gas chromatography mass spectrophotometry were...

The dinuclear zinc complex Zn2L2 (HL=2-{[[di(2-pyridyl)methyl](methyl)amino]methyl}phenol) has been synthesized and isolated as colorless crystals. interaction of the compound with superoxide in anhydrous organic solvents evaluated by CV, stopped-flow Uv-vis, EPR ESI-MS suggesting binding activation coordinated superoxide, thanks to Lewis acidity Zn(II) centers. results obtained this study high...

objective(s): to study the effect of cardiopulmonary bypass (cpb) on nuclear factor-kappa b (nf-кb) and cytokine expression and pulmonary function in dogs. materials and methods: twelve male mongrel dogs were divided into a methylprednisolone group (group m) and a control group (group c). all animals underwent aortic and right atrial catheterization under general anesthesia. changes in pulmonar...

the electrocatalytic degradation of methyl orange (mo) on pbo2-tio2 nanocomposite electrodes was studied by cyclic voltammetry and bulk electrolysis. the results reveal that pbo2-tio2 nanocomposite electrodes possess higher oxygen evolution overpotential than pbo2 electrodes and the electrocatalytic degradation of mo on the electrodes is direct oxidation process. the influence of experimental p...