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Interpretation of multi-season, multiyear color imagery for a continental-shelf region ArchiMer
Topliss, Bj; Payzant, La; Hurley, Pcf; Miller, Jr; Freemantle, J.
A comparison was made between multi-year, multi-season cruise information from the surface waters of the Scotian shelf and satellite imagery from the Coastal Zone Colour Scanner (CZCS). The colour imagery was able to identify several physical processes on the shelf (such as outflows and upwelling) to approximately the same degree as previously reported with thermal imagery. Because processing CZCS data requires the use of atmospheric and marine models defined by a range of input parameters, the various processing steps and assumptions were evaluated for potential impact on any marine interpretation of the imagery. The shelf waters were not a pure oceanic water mass throughout the year and turbidity levels were found to be the most significant interfering...
Tipo: Text Palavras-chave: SHELF SEA; REMOTE SENSING; TURBIDITY.
Ano: 1991 URL: http://archimer.ifremer.fr/doc/00103/21381/18981.pdf
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Modelling growth and feeding of the Japanese oyster Crassostrea gigas in Marennes-Oleron Bay (France) ArchiMer
Raillard, Olivier; Deslous Paoli, Jean-marc; Heral, Maurice; Razet, Daniel.
A model simulating growth and feeding is presented for Crassostrea gigas and incorporates such physiological processes as filtration rate, pseudo-faeces production and ingestion, oxygen consumption and spawning. The only state variable is flesh weight. This model is designed to incorporate the effects of quantity and quality of food, temperature and oyster dry weight. Comparison of simulation outputs with real data showed that the model closely simulated the seasonal changes in weight over a two-year sample interval. This simulation confirms that oyster growth in Marennes-Oleron Bay is strongly regulated by the non-organic concentration in the seston. This latter factor dilutes the potential food for oyster and causes a large amount of food rejection in...
Tipo: Text Palavras-chave: MODEL; ENERGETIC BUDGET; GROWTH; TURBIDITY; CRASSOSTREA-GIGAS.
Ano: 1993 URL: http://archimer.ifremer.fr/doc/1993/publication-3066.pdf
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Use of a turbidity sensor to characterize micellar casein powder rehydration: influence of some technological effects Inra
Gaiani, C.; Banon, S.; Scher, J.; Schuck, P.; Hardy, J..
A simplified method to study rehydration of dairy powders was developed for native phosphocaseinate powder. The method involved dispersing powder in a stirred vessel equipped with a turbidity sensor under standardized conditions. The changes of turbidity occurring during powder rehydration highlighted several stages. These stages include particles wetting, and then swelling as the water penetrates into the powder bed, followed by a slow dispersion of the particles. With this tool, some technological effects on powder rehydration were analyzed. Ultrafiltrate incorporation to the casein concentrate before spray drying was found to greatly improve the rehydration, whereas mixing ultrafiltrate powder with casein powder after spray drying did not change the...
Tipo: Journal Article Palavras-chave: TURBIDITY; NATIVE PHOSPHOCASEINATE; REHYDRATION; DRYING.
Ano: 2005 URL: http://www.prodinra.inra.fr/prodinra/pinra/doc.xsp?id=PROD2007c3975fc1&uri=/notices/prodinra1/2007/02/
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