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During the Southern Oxidants Study 1999 field campaign at Dickson, TN, we conducted measurements of the n-aldehydes propanal, pentanal, hexanal, heptanal, octanal, and nonanal. Propanal and nonanal tended to have the largest concentrations, with afternoon maxima of approximately 0.3 ppb. These aldehydes typically represented a significant fraction of the(More)
Pars planitis has rarely been noted to occur in more than one member of a family. We report the occurrence of this disorder in more than one member of two unrelated families. The affected members of one of these families included a 37-year-old woman and three of her six children. The affected members of the other family were two teenaged brothers. No(More)
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