17 documents found, page 1 of 2
Assessment of marine microalgae's bioactive extracts potential for food applica...
Sousa, V.; Coelho, M.; Martins, J.; Pereira, R. N.; Maciel, F.; Pintado, M.; Dias, O.; Vicente, A. A.; Geada, P.The growing demand for sustainable and functional food ingredients has driven interest in marine microalgae as a source of bioactive compounds. This study evaluates the bioactivity, safety, and metabolite profile of extracts from Dunaliella salina and Pavlova gyrans, produced through two extraction methods: osmotic shock and bead milling with ethanol. Aqueous extracts were rich in peptides and amino acids, whil...
Optimization of a protocol for isolation of immune cells from European seabass ...
Salazar-Gutierrez, D.; Ferreira, M.; Sousa, V.; Valente, L. M. P.; Correia, A.; Gomes, S.Background: As one of the most important food production sectors worldwide, aquaculture is now invested in developing tools to study fish immunity. Fish health relies heavily on hematopoietic organs (head kidney), but also on intestine. The wide knowledge-gap of the fish immune system coupled with the lack of cell lines to perform in vitro studies poses a barrier to the development of efficient tools to enhance...
O bairro da Malagueira passado e presente: Um retrato metabólico
Rodrigues, D.; Sousa, V.; Marat-Mendes, T.Esta apresentação oferece uma análise comparativa do funcionamento metabólico do Bairro da Malagueira, entre o momento em que é planeado e a atualidade. O Bairro da Malagueira resultou da proposta de um projeto do Arquiteto Siza Vieira, nos anos 80, tendo sido construído em diferentes fases e ocupado até aos dias de hoje. O interesse de estudo do Bairro da Malagueira deve-se ao tema do Projeto Final de Arquitet...
Preliminary evaluation of the potential performance of a future PAYT system in ...
Sousa, V.; Dinis, J.; Drumond, A.; Bonnet, M. J.; Leal, P.; Meireles, I.; Ferreira, CéliaThe use of Pay-As-You-Throw systems is a reality in several cities throughout the globe, in some cases for several year by now. In Portugal, as well as many other countries around the Mediterranean, there have been only a few experiences and limited information exists regarding their performance. In this contribution, the results of a first stage towards an experimental PAYT system recently implemented in the m...
Benefits of introducing door-to-door separate collection in rural areas
Vaz, J.; Sousa, V.; Ferreira, CéliaThere is a pre-conception that in rural isolated areas, the production of recyclable waste is reduced and door-to-door collection schemes are not worth setting-up. This work describes the implementation of a pilot test for door-to-door collection of dry recyclable waste at a small rural site. It aims at improving the knowledge about the waste generated in rural areas and the impact on source segregation habits ...
Separate collection of packaging waste: characterization and impacts
Oliveira, V.; Vaz, João Miguel; Sousa, V.; Ferreira, CéliaThis study evaluates separate collection rate of packaging waste in the coastal area of the “Centro” region of Portugal, where collection is based on road-side waste containers. The area comprises 42 municipalities and the collection system of two waste management companies were studied: ERSUC and VALORLIS. In 2015, the average separate collection rate was 7.6% (30.7 kg person−1 year−1), in ERSUC, and 7.7% (29....
Model for the separate collection of packaging waste in Portuguese low-performi...
Oliveira, V.; Sousa, V.; Vaz, J. M.; Ferreira, CéliaSeparate collection of packaging waste (glass; plastic/metals; paper/cardboard), is currently a widespread practice throughout Europe. It enables the recovery of good quality recyclable materials. However, separate collection performance are quite heterogeneous, with some countries reaching higher levels than others. In the present work, separate collection of packaging waste has been evaluated in a lowperforma...
Remote Experiments as an Asset for Learning Programming in Python
Guerra, H.; Cardoso, A.; Sousa, V.; Gomes, L. M.The online experimentation is in expansion in Higher Education Institutions, with a dynamic extension to all scientific areas. The integration of online labs in higher educational courses constitutes a significant financial saving way for the institutions with multiple benefits for student's learning. Without access and usage time restrictions, these labs provide a wide range of experiments, performed individua...
GIS Web-based Platform for Experimentation Using Environmental Geosensors
Ribeiro, A. M.; Sousa, V.; Cardoso, A.This work describes a GIS web-based open source platform for wireless in situ geosensor data visualization and distributed geoprocessing. Emphasis is put on: i) visualization of sensor measurements and sensor location on a map; ii) geoprocessing of these data; iii) and, visualization of geoprocessing results on a map. The platform combines the Open Geospatial Consortium (OGC) Sensor Web Enablement (SWE) standar...
Promoter hypermethylation of DNA repair genes MLH1 and MSH2 in adenocarcinomas ...
Gomes, A.; Silva, M. Reis; Alarcão, A.; Couceiro, P.; Sousa, V.; Carvalho, L.Five years survival of lung cancer is 16%, significantly lower than in prostate (99.9%), breast (88.5%) and colon (64.1%) carcinomas. When diagnosed in the surgical stage it increases to 50% but this group only comprises 14-16% of the cases. DNA methylation has emerged as a potential cancer-specific biomarker. Hypermethylation of CpG islands located in the promoter regions of tumour suppressor genes is now firm...