consumption of d-limonene from both its natural oc-currence in food and as a flavor is estimated to be 0.27 mg/kg body weight/day for a 60 kg individual (0.27 mg/kg body weight x 60 kg=16.2 mg/person/day).3 It has been reported that in an Arizona population, the daily d-limonene intakes from citrus juice and peel are
A keystone island perforator flap is typically used for reconstruction of an oncologic resection defect of sarcomas and skin cancers in the extremities, trunk, and the head and neck regions.
Some systems are ready-made for specific activities, like the one shown here for welding. Using portable fans or natural ventilation provided by open windows or doors may be easy, but these are often not enough to protect workers from breathing harmful contaminants. Mechanical ventilation systems that remove air are a better solution to reduce airborne contaminants to a level that is safe over a short or long period of time. There are 2 basic types of systems: Local exhaust ventilation (LEV) removes harmful contaminants at, or very near, their source. General industrial ventilation systems reduce the accumulation of less harmful contaminants in a room or entire building. These systems need to be designed and installed correctly to function effectively.