Hydrodynamic function of the shark's tail
Article Abstract:
The hydrodynamic function of the tail in four spiny dogfish swimming in a flow tank equipped with laser-light sheet is analyzed using a digital particle-image velocimetry. It is proposed that the inclined angle of the tail's trailing edge and its motion at an angle to the horizontal body axis may have contributed towards the branched ring vortex, which directs the water backwards, thus increasing the shark's maneuverability.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 2004
User Contributions:
Comment about this article or add new information about this topic:
A hydrodynamic model of locomotion in the basilisk lizard
Article Abstract:
Organisms with a body mass of over a gram and live in both air and water generally support their weight with their buoyant bodies. Their swimming speed is limited by wave-making resistance. Shore birds and basilisk lizards are able to keep their bodies above the water surface by repeatedly kicking the surface with their feet. The support mechanism of basilisk lizards is explored.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 1996
User Contributions:
Comment about this article or add new information about this topic:
On-chip manipulation of free droplets
Article Abstract:
A liquid-liquid micro fluid system is described for manipulating freely suspended microlitre- and nanolitre-sized droplets of water or hydrocarbon, which floats on a denser, perfluorinated oil and are driven by an alternating or constant electric field applied by arrays of electrodes below the oil.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 2003
User Contributions:
Comment about this article or add new information about this topic:
- Abstracts: Dynamic control of positional information in the early Drosophila embryo
- Abstracts: Seasonal distribution of African savanna fires. A probable stellar solution to the cosmological lithium discrepancy
- Abstracts: In search of the simplest cell. Chemical remodelling of cell surfaces in living animals. Cell bodies in a cage
- Abstracts: Working for food under conditions of varying motivation in broilers. Superparasitism acceptance and patch-leaving mechanisms in parasitoids: A comparison between two sympatric wasps
- Abstracts: Microwave spectroscopy of a quantum-dot molecule. Electrical detection of the spin resonance of a single electron in a silicon field-effect transistor