over the past decade, many applications were intended for filtration by membrane technology especially the thin film composite (tfc) membranes. in advanced developments of thin film membranes, an attempt was made to spread a new generation of membranes called thin film nano composite (tfn) membranes. however, in the last generation of tfns, an ultrathin selective film of nanoparticles is coated...

In this paper, a solution of the mathematical model an autowave process in thin nearelectrode layer magnetic fluid is found. A modification FitzHugh–Nagumo system taken as basis made it possible to obtain results similar full-scale experiment. As criterion for adequacy model, we use visual correspondence experiment and presence typical phenomena observed process, such reverbs, pacemakers, bypas...

We propose a new reduced model for gravity-driven free-surface flows of shallow elastic fluids. It is obtained by an asymptotic expansion of the upper-convected Maxwell model for elastic fluids. The viscosity is assumed small (of order epsilon, the aspect ratio of the thin layer of fluid), but the relaxation time is kept finite. Additionally to the classical layer depth and velocity in shallow ...

vacuum drying of salicornia herbacea l. was performed at different drying temperatures (50, 60, 70, and 80c) to evaluate the drying characteristics and the effect of drying temperatures on the quality of salicornia. as the drying temperature increased, the drying time decreased significantly (p< 0.05). the drying rate decreased with decrease in moisture content and increase in drying time. on ...

background:the present study aims to present a new method to trace narcotics in the solution extracted from dried urine stain left on cotton fabric. material and methods:narcotic substance was traced in the 50 samples through two methods. in the first method, samples were directly examined through thin layer chromatography (tlc). in the second method, a piece of cotton fabric was soaked in a be...

conclusions the active compound may be a flavonoid. existence of flavonoids in tested fractions could be the important medicinal properties of m. communis leaves. further work is required to evaluate the exact effect of these biological compounds on animal model or human volunteers. results ethyl acetate and total methanolic extracts respectively had the best antifungal effects against three te...