19 documents found, page 1 of 2

Estudo de patentes de tecnologias de produção de ostras em aquacultura

Influence of seasonality on the quality of oysters from the Sado and Mira rivers

There is a lack of knowledge about the influence of seasonality on the microbial and physicochemical quality of oysters in Sado and Mira rivers. Water, sediment, and oysters (Crassostrea angulata and Crassostrea gigas) were collected for microbiological, nutritional, and sensory analyses. The microbiological water quality and the oyster shell contamination were better during the warmer months. No seasonal effec...

Control of the infestations by Polydora spp. in Crassostea angulata

Casca de ostra: tendências recentes dos usos ambientais visando à economia circ...

A produção de ostras em aquacultura é uma atividade econômica implantada em muitos países e que, durante o processo produtivo e o consumo, gera enormes quantidades de casca de ostra, tornando-se um resíduo importante. Este trabalho mapeia o uso ambiental desse resíduo. Realizou-se o mapeamento patentário na base Worldwide europeia, usando o software Orbit® e verificou-se que a China e a Coreia são os países com...

Evaluación del crecimiento de ostras en el estuario del Sado (Portugal) y su re...

Measurements of Lake-Atmosphere interactions at Alqueva reservoir

The exchanges between lakes and the atmosphere at Alqueva reservoir, Southeast Portugal, are the object of a 2014 Summer experiment described is this work, with special attention to above water, air-water interface and below water measurements. The field campaign take advantage of the floating meteorological stations already established at the Alqueva reservoir. The troposphere and lower stratosphere are charac...

MEDIÇÃO ESPECTRAL DO COEFICIENTE DE ATENUAÇÃO DE ÁGUAS INTERIORES

Changes in the water surface composition may affect the optical properties of the water column. In addition, the light penetration in the water body is affected by absorption and scattering processes resulting in spectral intensity changes along the water column. Underwater measurements of spectral downwelling radiance were performed at several depths in order to compute the water column spectral attenuation co...

QUALIDADE DA ÁGUA DA ALBUFEIRA DE ALQUEVA

The water quality control of reservoirs is fundamental since these constitute indispensable renewable water resources for a variety of purposes. A feasible low cost approach that allows for, continuously and globally, monitoring water quality bio-optical quantities was developed through the combination of satellite retrieved water surface spectral reflectance and limnological laboratory analyses. The present ap...

CONTRIBUTO DA CLIMATOLOGIA PARA A RECUPERAÇÃO DA RIBEIRA DA PARDIELA

Todos os afluentes do rio Guadiana em território português são rios temporários de características sazonais que apresentam caudal superficial apenas durante os meses com precipitação. Este tipo de sistemas ocorre naturalmente em regiões de clima Mediterrânico e de clima semi-árido, estando também presentes noutras regiões da Europa, normalmente associadas à geologia de características calcárias extremamente per...

Interactions lake-atmosphere: the ALEX 2014 field campaign and numerical simula...

The ALqueva hydro-meteorological EXperiment, ALEX 2014, was an integrated field campaign with measurements of chemical, physical and biological parameters in water and air at different experimental sites in the region of the Alqueva reservoir, a 250 km2 man made lake, in the southeast of Portugal. The Field campaign took place from June 1 to September 30, 2014 and comprises an Intensive Observation Period (IOP)...