Transmission of electrons across a rectangular barrier IV–VI semiconductor compounds is considered. Conduction arrive at the and are reflected or transmitted through it depending on relative values potential Vb electron energy E. The theory, in close analogy to Dirac four component spinors, accounts for boundary conditions both sides barrier. calculated transmission coefficient TC an oscillator...

A hydrophilic macromolecular network is prepared by performing graft copolymerization of poly (sodium acrylate) chains onto salep and silica gel. The reaction parameters affecting the water absorbency of the superabsorbent composite were optimized using Taguchi method. FT-IR spectroscopy and Thermo Gravimetric Analysis (TGA) were used for confirming the s...

the purpose of the present study was to develop glipizide controlled release nanoparticles using alginate and chitosan thorough ionotropic controlled gelation method. glipizide is a frequently prescribed second generation sulfonylurea which lowers the blood glucose in type-two diabetics. quick absorption of the drug from the gastrointestinal tract along with short half- life of elimination make...