4 documents found, page 1 of 1
Upcycling fishing net waste and metal oxide from electroplating waste into alga...
Barros, Daniel; Nobre, Luís; Antunes, Joana; Bessa, João; Cunha, Fernando Eduardo Macedo; Mota, Carlos; Gomes, Fernanda Isabel AntunesPlastic waste, especially discarded fishing nets, and electroplating sludges pose significant environmental challenges, impacting marine ecosystems and contributing to pollution. In alga cultivation, invasive microorganisms often hinder growth, necessitating strategies to combat these issues. This study aimed to develop recycled substrates for alga cultivation by repurposing fishing nets and enhancing their sur...
Blast fragment impact of angle-ply composite structures for buildings wall prot...
Barros, Daniel; Mota, Carlos; Bessa, João; Cunha, Fernando Eduardo Macedo; Rosa, Pedro; Fangueiro, RaúlThis paper investigates the fragment performance of several composite panels for attaching to the inside walls of a building structure. These panels were developed using different types of fiber woven fabrics (W0, W90) combined with distinct layers orientations (angle-ply effect) of L0/0 and L0/15. Aramid, E-glass, and S-glass fiber fabrics impregnated with thermosetting epoxy resin, and a prepreg of Ultra High...
The effect of Bi addition on the electrical and microstructural properties of S...
Soares, Delfim; Sarmento, Manuel João Linhares; Barros, Daniel; Peixoto, Helder; Figueiredo, Hugo; Alves, Ricardo; Cerqueira, M. F.; Delgado, IsabelThis study aims to investigate the effect of bismuth addition (up to 30 Wt%) on the microstructure and electrical conductivity of a commercial lead-free alloy (SAC405) near the solder/substrate soldered joint. The system under study is referred in this work as (SAC405 + xBi)/Cu, as Cu is the selected substrate in which the solder was casted. The electrical resistivity of this system was investigated, considerin...
Reforma gerencial 20+20: os 20 anos da reforma Bresser e os desafios para o futuro
Franzese, Cibele; Trigo, Maria Fernanda; Abrucio, Fernando Luiz; Peci, Alketa; Martins, Humberto Falcão; Alcoforado, Flávio Carneiro GuedesLos ciudadanos hoy en día están más y mejor informados y son mucho más exigentes en cuanto al funcionamiento de las instituciones públicas, tienen expectativas más altas de sus gobiernos y demandan la provisión de servicios de calidad de manera transparente, efectiva y oportuna. Por esta razón, uno de los mayores desafíos que enfrentan los gobiernos de la región es la falta de confianza de los ciudadanos en las...