William S. Beckett

Kathleen Belanger2
Jean-ellen McSharry2
Mark J Utell1
2Kathleen Belanger
2Jean-ellen McSharry
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RATIONALE Zinc oxide is a common, biologically active constituent of particulate air pollution as well as a workplace toxin. Ultrafine particles (< 0.1 microm diameter) are believed to be more potent than an equal mass of inhaled accumulation mode particles (0.1-1.0 microm diameter). OBJECTIVES We compared exposure-response relationships for respiratory,(More)
OBJECTIVE Recent studies indicate that the U.S. Environmental Protection Agency (EPA) ozone standards may not protect sensitive individuals. In this study we examined respiratory effects of ozone in infants who may be vulnerable, particularly if they are children of asthmatic mothers. DESIGN Women delivering babies at one of five hospitals in southwestern(More)
We assessed the accuracy of questionnaire reports of cat and dog ownership and presence of cockroaches in predicting measured allergen concentrations in house dust. We collected dust samples in the homes of 932 newborns living in New England. Dust samples were taken from the main living area and the infant's bedding. Allergen content of house dust was(More)
Network C is a programming language designed for constructing simulation models of VLSI circuits and systems. The language, which is a superset of C, supports a range of modeling capabilities including approximate solution of Kirchoff equations at the circuit level and discrete event functional simulation at the system level. When used to model a MOS(More)
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