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  1. No Access

    Chapter and Conference Paper

    Detecting NAPL in Unsaturated Soil

    Research was completed on ground penetrating radar (GPR) to determine the threshold level where non aqueous phase liquid (NAPL) could be detected in the unsaturated zone. Method development focussed on ideal a...

    R. G. Zytner, A. Dawrea, J. Donald in Proceedings of the Canadian Society of Civ… (2023)

  2. No Access

    Article

    Bullous retinal detachment and multiple retinal pigment epithelial detachments in patients receiving hemodialysis

    Two patients receiving hemodialysis for chronic renal failure developed bilateral bullous retinal detachment associated with multiple underlying serous detachments of the pigment epithelium. Many of the detach...

    J. Donald, M. Gass in Graefe's Archive for Clinical and Experimental Ophthalmology (1992)

  3. No Access

    Article

    New observations concerning choroidal osteomas

    The clinical and laboratory findings in fifteen patients with nineteen eyes containing choroidal osteomas are summarized. The first case of the disease in a male patient is reported as well as the development ...

    J. Donald, M. Gass in International Ophthalmology (1979)