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Linear relationships of the median lethal concentrations of several hundreds of chemicals for a variety of organisms with Vibrio fischeri median effective concentrations are investigated. Significant correlations can be developed for many aquatic species including the fishes fathead minnow, bluegill, catfish, goldfish, goldorfe, guppy, killifish, rainbow(More)
Polychlorinated biphenyls (Aroclor 1221, 1242 and 1254) at concentrations up to 0.1% in glucose did not inhibit the growth of lake water bacteria. The bacteria used Aroclor 1221 and 1242 but not 1254 as sole carbon and energy sources for growth. Less than 1% of lake water bacteria, however, possess this ability. Seven bacterial isolates from Aroclor agar(More)
—The limited usefulness of the maximum power transfer theorem in practice is argued. Inappropriately, the utility and value of the maximum power transfer theorem are often elevated to be religious icons of electrical engineering. While the theorem appears to be useful, often in real circuits the load impedance is not set equal to the complex conjugate of(More)
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