background: correlations between bone marrow, heart, kidney, liver, skin and lung transplant rejection or survival with human cytokine gene polymorphisms have been described. there are also reports about the role of cytokines and tumor necrosis factors-alpha (tnf-α) on corneal transplant in animal models. further studies are needed to clarify the role of cytokines in corneal allograft rejection...

In this study, polymer composite membranes comprising carbon nanotube (CNT), polysulfone (PSF) and polyvinyl alcohol (PVA) were synthesized via the phase inversion method and used to remove phenol from the phenol-containing wastewater. The fabricated membranes were reinforced with the functionalized carbon nanotubes (fCNTs) and coated with PVA to enhance their mechanical strength and anti-fouli...

accurate permeability estimation has always been a concern in determining flow units, assigning appropriate capillary pressure andrelative permeability curves to reservoir rock types, geological modeling, and dynamic simulation.acoustic method can be used as analternative and effective tool for permeability determination. in this study, a four-step approach is proposed for permeability estimati...

During interfacial polymerization (IP) reaction between m-phenylenediamine (MPDA) and trimesoyl chloride (TMC), a by-product, i.e. hydrochloric acid can produce. This produced acid diffuses back in aqueous phase and protonates MPDA and reduces its reactivity that results in lowering of polymer yield and performance of membrane. Further, for getting consistency in reverse...

• Permeability-selectivity tradeoff slope is related to solute and solvent diameters Intercept of the line governed by size Underlying principles solution-diffusion theory applies polyamide membranes Identified new regime where water transport rates are weakly dependent Fundamental understanding reverse osmosis (RO) phenomena necessary for quantitative prediction contaminant rejection developme...

This paper reports on the synthesis and characterisation of polysulfone (PSf) ultrafltration (UF) membranes modifed with carbon coated alumina Ni-doped titanium dioxide (CCA/Ni-TiO2) nanoparticles. The syntheses of the membranes was carried out using the phase inversion process. The ...

A theoretical and experimental investigation has been conducted to study the untrafiltration of macromolecules through semipermeable membranes. A hydrodynamic model for the convection of rigid spherical solutes through cylindrical pores has been developed to examine the effects of solute concentration and charge on solute rejection by membrane pores. An experimental program to test the theoreti...

introduction: due to its immunosuppressive properties, local graft irradiation (lgi) has been proposed as a second line therapy for treatment of acute kidney rejection. case presentation: in this case-series we report 6 patients with biopsy proven acute kidney allograft rejection refractory to conventional antirejection therapy who underwent lgi for treatment of acute rejection at our center. t...

introduction epithelial rejection typically begins in a linear pattern from the periphery of the graft and progresses centripetally. here in, we reported a patient with a new presentation of corneal epithelial graft rejection. case presentation a 23-year-old man presented with blurred vision two months after penetrating keratoplasty. conclusions slit lamp examination revealed sharply demarcated...