D. Scott Ireland

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This publication summarizes the results of a Pellston Workshop sponsored by the Society of Environmental Toxicology and Chemistry (SETAC), held 17-22 August 2002 in Fairmont, Montana, USA. The full technical proceedings of the workshop will be published separately by SETAC in 2003. Previous SETAC workshops have focused on sediment ecological risk assessment(More)
The objective of this study was to evaluate the toxicity of sediments from the Grand Calumet River and Indiana Harbor Canal located in northwestern Indiana, USA. Toxicity tests used in this assessment included 10-day sediment exposures with the amphipod Hyalella azteca, 31-day sediment exposures with the oligochaete Lumbriculus variegatus, and the Microtox(More)
PURPOSE To measure achromatic spatial contrast sensitivity in patients with anisometropic amblyopia under conditions favoring inferred parvocellular (PC) or magnocellular (MC) pathway mediation. METHODS Fourteen anisometropic amblyopes (VA amblyopic eye 6/12 or lower; better eye greater than 6/7.5) and 10 age-matched, nonamplyopic controls (VA 6/6)(More)
Response of the amphipod Hyalella azteca exposed to contaminated sediments for 10 to 42 d in laboratory toxicity tests was compared to responses observed in controlled three-month invertebrate colonization exposures conducted in a pond. Sediments evaluated included a sediment spiked with dichlorodiphenyldichloroethane (DDD) or dilutions of a field sediment(More)
Twenty-six liquid antacids have been assessed using a procedure which permits comparisons to be made in terms of 'antacid efficiency' parameter which reflects both the ability to maintain pH above 3 and the duration of the effect. A wide variation in activity was demonstrated in the preparations tested and it was concluded that antacids could be classified(More)
The objective of the present study was to evaluate the relative sensitivity of test organisms in exposures to dilutions of a highly toxic sediment contaminated with metals and organic compounds. One dilution series was prepared using control sand (low total organic carbon [TOC; <0.1%, low binding capacity for contaminants]) and a second dilution series was(More)
A chemiluminescent enzyme linked immunosorbent assay (ELISA) for the detection of antibody to hepatitis B virus surface antigen (anti-HBs) in human serum has been developed. Polystyrene microtitre plates were coated with recombinant, yeast-derived hepatitis B surface antigen (rec-HBsAg). Patient serum samples and appropriate controls were added to the(More)
We have examined the properties of six heat and moisture exchange filters (HMEF) to ascertain their resistance to liquid flow and their ability to retain a challenge bacterium, Pseudomonas diminuta, from aqueous and nebulized suspensions. Only one HMEF, the Pall Ultipor was able to withstand a significantly greater pressure of liquid than that found in(More)
PURPOSE Early detection and treatment of amblyogenic conditions such as high refractive errors and anisometropia can help prevent the development of amblyopia. The traditional gold standard for the determination of refractive error in pre-school children is retinoscopy. Difficulties with retinoscopy in pre-school children have led to the development of(More)