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Toward in situ detection of algae species ArchiMer
Colas, Florent; Laurent, Sebastien; Lehaitre, Michel; Hamelin, Muriel; Crassous, Marie-pierre; Antoine, Elisabeth; Dreanno, Catherine; Deuff, Albert; Compere, Chantal.
For the last few years there is a more and more pressing need to develop system for detecting HAB at their early stage. Researchers have then been working on new in situ sensor. In this paper a submarine transducer based on surface plasmon resonance is reported. It demonstrated a refractive index resolution of 3.10(-6), which is promising for later phytoplankton detection.
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Ano: 2009 URL: http://archimer.ifremer.fr/doc/00107/21802/20328.pdf
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Flume tank characterization of marine current turbine blade behaviour under current and wave loading ArchiMer
Gaurier, Benoit; Davies, Peter; Deuff, Albert; Germain, Gregory.
The long term reliability of tidal turbines is critical if these structures are to be cost-effective. Optimized design requires a combination of material durability models and structural analyses which must be based on realistic loading conditions. This paper presents results from a series of flume tank measurements on strain gauged scaled turbine blades, aimed at studying these conditions. A detailed series of tests on a 3-blade horizontal axis turbine with 400 mm long blades is presented. The influence of both current and wave-current interactions on measured strains is studied. These tests show that wave-current interactions can cause large additional loading amplitudes compared to currents alone, which must be considered in the fatigue analysis of...
Tipo: Text Palavras-chave: Experimental trials; Wave and current effects; Marine current turbine; Blade deformations; Hydrodynamic.
Ano: 2013 URL: http://archimer.ifremer.fr/doc/00136/24693/22770.pdf
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