Microwave ovens. 1. How well do they cook?
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Smoke emission from fuels is an important source of indoor air pollution. Children spend considerable time indoors. It is therefore important to determine whether air contaminants from indoor air sources affect incidence of respiratory illness, cause symptoms and changes in pulmonary function status in them. Two hundred children in the age group of 7-15 were selected randomly. They were stratified according to the fuel used in their homes and respiratory symptoms were inquired from them according to a questionnaire recommended by the American Thoracic Society. The most symptomatic children were those whose households used kerosene (52%) and mixed fuels (46%) although different symptoms were present in varying extent in all 4 groups of children. Cough, cold, congestion or phlegm for one week or more occurred more frequently with mixed fuel use followed by kerosene. The present study thus showed that mixed fuel and kerosene fuel had worst effects on respiratory system in children whose households used these fuels.
BACKGROUND: Home oxygen therapy is commonly prescribed for the treatment of chronic obstructive pulmonary disease (COPD). The risks of smoking while using this therapy have been well described. OBJECTIVE: To discuss the Royal Brisbane Hospital Burns Unit's experience and present case studies which illustrate the danger of alternative ignition sources while using home oxygen. DISCUSSION: The dangers of home oxygen therapy can be minimised by careful patient selection, education and ongoing monitoring.
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Convenience foods stand for a culinary revolution that commenced just over 100 years ago. The food industry came into being parallel to industrialization and urbanization. Nicolas Appert invented the can at that time and Julius Maggi invented dehydrated soup. Today convenience foods--from powdered spices to ready-to-eat dishes--are prepared using state-of-the-art technology and offer a ubiquitous range of healthy, easy-to-serve foods.
In order to investigate the mechanism of the activities of superoxide dismutase (SOD) and the concentration of malondialdehyde (MDA) in lung and rate of micro-nucleus (MN) in bone marrow by which rape oil fume condensate(RC) exert their effect in rat lung, pouring into traches SD rat was performed with RC. Results showed that the SOD activities in RC and B(a)P groups were significantly higher than those in DMSO and control groups(P < 0.05). The concentrations of MDA were significantly lower than that in DMSO and control groups (P < 0.05). In experimental groups SOD/MDA decreased. MN rate significantly increased. It is concluded that lung tissue may be a target of RC.