A new type of cation-exchange nanocomposite membranes was prepared by in-situ formation of ZnO nanoparticles in a blend containing sulfonated poly (2,6-dimethyl-1,4-phenylene oxide) and sulfonated polyvinylchloride via a simple one-step chemical method. As-synthesized nanocomposite membranes were characterized using Fourier transform infrared spectroscopy, scanning electron microscopy and X-ray...

Introduction: One of the major concerns in laryngeal laser surgery is the risk of airway fire. The introduction ofwrapped tubes and metal tubes has reduced the fire hazards. However, these tubes are expensive and do not provide convenient access to the surgical field. There are few laboratory studies addressing the resistance of polyvinylchloride tubes against ignition in the given circum...

Allergy to natural rubber latex (NRL) gloves in healthcare workers is well recognized, and usually presents as immunological contact urticaria and sometimes anaphylaxis. Latex gloves can also cause allergic contact dermatitis, mostly because of rubber accelerators. As latex sensitivity is well known in healthcare settings, synthetic latex-free gloves are widely used. The most popular latexfree ...

BACKGROUND Ciprofloxacin is a fluoroquinolone antibiotic used to treat infections caused by both gram-positive and gram-negative organisms. OBJECTIVE To determine the physical and chemical stability of ciprofloxacin diluted in 5% dextrose in water (D5W) or 0.9% sodium chloride (normal saline [NS]) and stored in polyvinylchloride (PVC) minibags at various temperatures. METHODS Solutions of c...

The storage of platelet concentrates (PC) at 22#{176}Cin polyvinylchloride containers has been limited to 3 days. Even within this time interval, fall in pH to 6.0 or less with associated loss of viability occurs in a substantial number of PC. Previous work demonstrated that the fall in pH resulted from increased production of lactic acid due to hypoxic conditions within the container and could...