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A separator includes a barrier 53 for retaining solid material thereon and an automatic mechanism for alternately preventing and allowing the flow of liquid to the separator outlet. When the flow is prevented, the liquid backs up through the barrier and washes the solids to a solids collection re...
A new disease occurred from August to October 1987 in cultured turbot in northwestern Spain. During the outbreak, there was continuous but low mortality, with a total cumulative loss of 4% of the affected population. Diseased turbot did not display unusual swimming behavior; the external signs of...