Two series of hydrogels on the basis of commercial chitosan and chitosan derived from naturally expired honeybees are presented in this article. Sorption capacity and behavior of both kind of materials in simulated body fluids such as Ringer's liquid or artificial saliva have been determined and compared. Presence of functional groups in synthesized materials have been determined by means of FT...

The influence of model flexibility upon simulated viscosity was investigated. NEMD simulations of viscosity were performed on seven pure fluids using three different models for each: one with rigid bonds and angles, one with flexible angles and rigid bonds, and one with flexible bonds and angles. Three nonpolar fluids (propane, n-butane and isobutane), two moderately polar fluids (propyl chlori...

occupational hazards, exposure to blood and body fluids (bbf) accidents and safety precautions constitute an important public health issue. we assessed the prevalence and determinants of exposure to occupational hazards among nurses, and their knowledge of occupational safety precautions. in a cross-sectional study, we surveyed 332 nurses working in 4 hospitals, nablus, west bank, palestine, by...