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Zoology and wildlife conservation

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Abstracts » Zoology and wildlife conservation

All stressed out

Article Abstract:

New research in fluid dynamics shows unusual behaviour at the interface between solids and fluids. A computer model is used to trace the movement of single atoms in a fluid flowing over the surface of a solid. The faster the fluid moves, the easier it slides over the solid. This is consistent with the theory that shear stress controls slip velocity and could have important implications for industrial processes, such as extrusion. Details of the study are presented.

Author: Robbins, Mark
Publisher: Macmillan Publishing Ltd.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 1997
Fluids

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Fish feeding hardly a drag

Article Abstract:

Fluid dynamic modeling and flowdata from bluegill sunfish (Lepomis macrochirus) is used to show that the dominant force carrying the prey to its end is not drag from the flowing water, but rather the pressure gradient generated by the rapidly opened mouth. The evolutionary arms race between predator and prey has indicated that forces driving prey anatomies and behaviors have differed according to the prey's habitat.

Author: Summers, Adam P., Dean, Mason N.
Publisher: Macmillan Publishing Ltd.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 2007
United States, Science & research, Behavior, Predation (Biology), Bluegill

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Subjects list: Research, Fluid dynamics
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