In the production of polymeric membranes used in water treatment by non-solvent-induced phase separation (NIPS) method, materials membrane casting solution and interaction these greatly affect properties performance obtained membranes. this study, polyethersulfone (PES) are produced NIPS method using two different solvents, dimethyl sulfoxide (DMSO) N-methyl-2-pyrrolidone (NMP), polyvinylpyrrol...

The microstructure of binary Al3Sc and ternary Al3(Sc1−yXy), where X is one of the transition metals from Group IIIA (Y), IVA (Ti, Zr or Hf) or VA (V, Nb or Ta), was investigated as a function of alloying element concentration for 0.1 y 0.75. Alloys with Group IIIA and IVA additions exhibited a single L12 solid-solution phase with some Kirkendall porosity. At the highest concentration studied, ...

• Mathematical model of drug release from drug-excipient granules. Developed can account for radial variations in porosity and content. Model accounts internal diffusion solubility-limited extraction granule. Solubility-limited give rise to a range moving boundary value problems. A reduced-order is presented the case which initial load greatly exceeds solubility Understanding pharmaceutical gra...

objective: the purpose of this study was to evaluate the solubility of three luting cements in artificial saliva. materials and methods: twenty disks (10×4 mm) of polycarboxylate, zinc phosphate and glass ionomer cements were prepared according to manufactures’ instructions. after setting, they were desiccated and each ten specimens were immersed in artificial saliva with special ph (3 or 5), c...

the solubility of naproxen in binary mixtures of polyethylene glycol 200 (peg 200) + water at the temperature range from 298.0 k to 318.0 k were reported. the combinations of jouyban-acree model + van’t hoff and jouyban-acree model + partial solubility parameters were used to predict the solubility of naproxen in peg 200 + water mixtures at different temperatures. combination of jouyban-acree m...

Lipid-based drug delivery systems in the form of triglyceride emulsions, micellar systems and liposomes have been used for parenteral administration for the last few decades. Large number of new chemical entities (NCE) presents formulation and bioavailability problems because of the dose and poor solubility in solvent and co-solvent systems. In addition, high drug concentrations can lead to irr...