The formation of membrane vesicles from a larger membrane that occurs during endocytosis and other cell processes are typically orchestrated by curvature-inducing molecules attached to the membrane. Recent reports demonstrate that vesicles can form de novo in a few milliseconds. Membrane dynamics at these scales are strongly influenced by hydrodynamic interactions. To study this problem, we dev...

We scrutinize three decades of probability density displacement distribution in a simple colloidal suspension with hard-sphere interactions. In this index-matched and density-matched solvent, fluorescent tracer nanoparticles diffuse among matrix particles that are eight times larger, at concentrations from dilute to concentrated, over times up to when the tracer diffuses a few times its size. D...

Mathematical analysis is presented of the water transport and drug release from hydrophilic tablets coated with impermeable coatings. Numerical solutions are provided for a number of cases of partial coating. It is shown that depending on the restriction provided to the tablets by the coating, Fickian or non-Fickian transport can be

The present study was carried out to develop oral sustained release tablets of propranolol HCl by different ratios of drug : matrix. Tablets were prepared by direct compression technique using xanthan gum and lactose. All the formulations (tablets) were evaluated for thickness, diameter, hardness, friability, weight variation, content of active ingredient, in vitro dissolution using USP dissolu...

The study was aimed isolate tamarind seed polysaccharide from tamarind kernel powder, crosslinking of isolated polysaccharide with epichlorohydrin and to assess the release behaviour of drugs, diclofenac sodium and ketoprofen from isolated tamarind seed polysaccharide and cross linked tamarind seed polysaccharide as release retardant. The presence of polysaccharide was confirmed by phytochemica...

The dielectric permittivity of a polyepoxy varnish with glass transition temperature (Tg) 61 °C is monitored during immersion in 0.5 M NaCl aqueous solution, by electrochemical impedance spectroscopy, at various temperatures the range [21; 78] °C. sorption curves are first analysed Fickian approach. An Arrhenius-type dependence apparent coefficient diffusion observed, no visible influence Tg. B...

Double-diffusive convection, in which a fluid is acted upon by two fields (such as temperature and salinity) that affect the density, has been widely studied areas diverse oceans stellar atmospheres. Assuming classical Fickian diffusion for both heat salt, evolution of salinity are governed parabolic advection–diffusion equations. In reality, there small extra terms these equations render hyper...

New antimicrobial hydrogels were prepared via reaction of functionalized-Tragacanth Gum biopolymer by glycidyltrimethylammonium chloride (QTG) with acrylamide (AM). Characterization of the QTG hydrogels with AM (QTG-AM) was carried out by thermogravimetric analysis (TGA), Fourier-transform infrared spectroscopy (FTIR), and 1HNMR. Swelling behaviour of the QTG hydrogels was investigated on the p...

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