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Filtering by: Date issued sim 1973-07-27 Degree Name Master of Science (M.S.)

The effect of selenium on chemical carcinogenicity in the rat

Creator:

Johnston, Weldon Kearney

Abstract:

One hundred and fifty-one weanling rats of both sexes were fed control diets or diets containing 160 ppm diethylnitrosamine (DEN) or 150 ppm N-2-fluorenyl-acetamide (FAA). The carcinogen level was calculated so that the LD₅₀ should be achieved at about 17 weeks. Each carcinogen treatment was incorporated with three different diet...

Resource Type:

Masters Thesis
The effects of concentration and particle size of suspended materials on growth and condition of the Pacific oyster (Crassostrea gigas)

Creator:

Wilson, William Joseph

Abstract:

The effects of exposure to suspended silt, kaolin and fuller's earth on growth and condition of Pacific oysters, 16 months of age, were studied. The exposure apparatus maintained a continuous flow of turbid water through chambers containing test oysters. Additional studies measured the filtration rates of oysters exposed to suspended...

Resource Type:

Masters Thesis