DSpace Collection: Departamento de Tecnologias e Ciências Aplicadas- Comunicações sem revisão por pares
http://hdl.handle.net/20.500.12207/105
Departamento de Tecnologias e Ciências Aplicadas- Comunicações sem revisão por pares2024-03-28T09:00:12ZInfluence of seasonality on the lipid profile of aquaculture oysters from the Sado and Mira rivers
http://hdl.handle.net/20.500.12207/6271
Title: Influence of seasonality on the lipid profile of aquaculture oysters from the Sado and Mira rivers
Authors: Ferro Palma, Silvina; Carvalho, Maria João; Fidalgo, Liliana; Salgado, Ricardo
Abstract: Oyster culture arose from the need to meet the growing demand for oysters. lhe production of oysters
in aquaculture on the Sado and Mira rivers is developed according to traditional and artisanal techniques
used for a long time. lhe way in which oysters are handled during the production process strongly
influences the final quality of the oysters. ln the rylira river, the Portuguese oyster (Crassostrea angulata)
is produced, being this one also produced in t[e Sado tiver joint with the Pacific oyster (Crassostrea
gigas). lhe oysters’ composition may vary according to the species, sexual maturation degree,
production location, food availability, season, and water temperature. According to the literature, 1 it
was found that C. gigas and Crassostrea rhizophorae, cultivated in Florianópolis and produced in the
spring, had a higher amount of lipids than those produced in the summer, whereas the C. gigas oysters
had a higher lipid content. In C. gigas oysters, the content of EPA and DHA corresponds to 20% of the
total fatty acids, 2 which presented high concentrations of omega-3 fatty acids and low concentration of
total saturated fatty acids, being mostly palmitic and oleic acids.2021-09-01T00:00:00ZProgress in rheology of biological and synthetic polymer systems
http://hdl.handle.net/20.500.12207/6227
Title: Progress in rheology of biological and synthetic polymer systems
Authors: Diogo, António Correia; Alvarenga, Nuno Bartolomeu; Canada, João Boavida; Ferro Palma, Silvina; Dias, João Mestre2004-01-01T00:00:00ZRemoval of emergent pollutants by a vertical flow constructed wetland with Vetiveria Zizanioides: A case study for caffeine
http://hdl.handle.net/20.500.12207/5659
Title: Removal of emergent pollutants by a vertical flow constructed wetland with Vetiveria Zizanioides: A case study for caffeine
Authors: Almeida, Maria Adelaide; Silva, Flávia Matias; Tavares, Jorge; Ribeiro, Carlos; Silveira, Daniele; Oliveira, Julio
Abstract: This work evaluated caffeine removal in a vertical flow constructed wetland (VFCW), planted with Vetiveria zizanioides. The feeding was continuous (synthetic influent: mineral medium and caffeine) to reduce the concentration variations in the bed. Two influent concentrations (0.75 ± 1.0 mg·L−1 and 1.5 ± 1.0 mg·L−1) were used with a constant hydraulic load (100 ± 10 L·m−2·d−1). Plant growth was monitored weekly, and characterization was carried out to determine the levels of chlorophyll a and b, pigments and carotenoids, and nutrients (nitrogen, phosphorus, magnesium, calcium, sodium and potassium). HPLC-MS was used to determine the caffeine concentration. The caffeine removal efficiency reached averages of 93 ± 1% and 87 ± 1% (retention time: 6.23 ± 0.23 hours). The caffeine contents in the influent did not affect chlorophyll a, total chlorophyll or carotenoids, and an increasing trend throughout the tests was observed. Sodium and potassium contents also showed an increase with higher caffeine concentration. This preliminary study showed that removing caffeine from wastewater using a VFCW is promising.2022-08-10T00:00:00Z