Preparation and characterization of polyvinyl alcohol/chitosan blends plasticized and compatibilized by glycerol/polyethylene glycol.

The synergistic plasticization/compatibilization effect of poly(ethylene glycol)/glycerol is reported for poly(vinyl alcohol) (PVA)/chitosan blends. The optimum concentration of PEG was first determined by preparation and characterization of PVA/PEG blends at different ratios (9:1, 6:1 and 3:1). The PVA/chitosan blends, plasticized with PEG, glycerol, and their combination, were also prepared and characterized.

The impact of the broadcasting mistake management culture in a healthy organization on the quality of the personnel work life.

Background: Today, healthy organizations such as hospital have found out the importance of quality of work life (QWL) of their personnel. QWL direct to increase job satisfaction, improve the quality of services to patient of hospital, and create high performance. One of factors that impact QWL is mistake management culture (MMC) when contribute different organization aspects such as QWL and cover its needs and finally promote job performance.