934 resultados para barrier integrity


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"FHWA contract: DOT-FH-9193."

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Prepared under contract (H-2002-R) with the Office of Policy Development and Research, Dept. of Housing and Urban Development, and Architectural and Transportation Barriers Compliance Board.

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"SAND84-1514."

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"July 1986."

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Shipping list no.: 94-0351-P.

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"July 1996."

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"April 18,1990."

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Thesis (Master's)--University of Washington, 2016-06

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Thesis (Master's)--University of Washington, 2016-06

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The feeding rate of a parasitic gnathiid isopod on fish was examined. Individual fish, Hemigymnus melapterus, were exposed to gnathiid larvae and sampled after 5, 10, 30, 60, and 240 min. I recorded whether larvae had an engorged gut, an engorged gut containing red material, or had dropped off the fish after having completed engorgement; variation among sampling times and larval stages was analyzed using generalized linear mixed model analyses. The likelihood that larvae had an engorged gut increased with time and varied with larval stage. First stage (1.45 mm) larvae. After 30 min, however, most (>93%) larvae had an engorged gut regardless of their larval stage. The likelihood of red material in the gut of third stage larvae increased over time (46% after 30 min, 70% after 60 min, and 86% after 240 min) while that of first and second stage larvae remained relatively low (