background and objectives: paper and paperboard packaging play an important role in safety and quality of food products. common bacteria of paper and paperboard food packaging could grow due to specific conditions included humidity, tem- perature and major nutrition to contaminate the food. the purpose of this research was to investigate numbers and the types of bacteria in the food packaging p...

background and aims. bacterial contamination of dental unit water supplies (duws) has attracted a lot of attention in recent years due to the emergence of serious infections in susceptible dental patients. the aim of the present study was to evaluate the presence of gram-negative bacterial contamination in duws at tabriz university of medical sciences faculty of dentistry. materials and methods...

We have shown that the bacteriostatic and bactericidal agents edetic acid and benzaLkonium chloride present in nebuliser solutions may cause bronchoconstriction when inhaled by asthmatic patients and suggested that this may account for some of the pardoxical bronchoconstriction that occurs after inhalation ofnebulised bronchodilator aerosols. ' As antibacterial agents may be removed from nebuli...

Man is a creature of his environment. He shares its hazards with many other living organisms and for most of the time achieves a measure of peaceful coexistence with them. But the balance is a delicate one, and very minor changes, such as an imperceptible rise in humidity or fall in temperature, may upset it surprisingly (Christie, 1971-2). Man is also a great manipulator of his environment and...

We have shown that the bacteriostatic and bactericidal agents edetic acid and benzaLkonium chloride present in nebuliser solutions may cause bronchoconstriction when inhaled by asthmatic patients and suggested that this may account for some of the pardoxical bronchoconstriction that occurs after inhalation ofnebulised bronchodilator aerosols. ' As antibacterial agents may be removed from nebuli...