181 documents found, page 1 of 19
Effect of mass flow rate and temperature on the gasification of animal fat
Araújo, A.L.; Paiva, E.; Silva, F.T.; Ribeiro, A.; Campos, J.B.L.M.; Pilão, R.M.In this work, gasification of animal fat was studied. Tests were performed with an emulsion of fat and water and temperature and mass flow rate effects were evaluated. Gas chromatography was used to analyze the composition of producer gas. Carbon and hydrogen conversion efficiencies, dry gas yield, cold gas efficiency, and higher heating value of producer gas were determined. The results showed that temperature...
Vitamin E-loaded hydroxyapatite Pickering emulsions as new product design for f...
Ribeiro, A.; Gonçalves, Raquel Filipa Silva; Pinheiro, A. C.; Manrique, Y. A.; Barreiro, M. Filomena; Lopes, José Carlos B.; Dias, M. MadalenaLipophilic vitamin E is a vital component of human health; however, it degrades quickly and loses bioactivity due to oxidative instability. In this study, vitamin E-loaded Pickering emulsions stabilised by nano-hydroxyapatite (n-HAp) were produced using a static mixer (NETmix), a technique enabling continuous production and droplet size tailoring. Thus, oil-in-water (O/W) emulsions containing vitamin E at a con...
From the Wilson and supercontinent cycles to the typology of the associated oro...
Ribeiro, A.; Dias, R.; Duarte, João; Pereira, Eurico; Rodrigues, José Feliciano; Romão, José; Rosas, Filipe M.SUMÁRIO: Os modelos geodinâmicos atuais suportam a presença de longos (≈ 500 Ma) ciclos de supercontinentes separados por ciclos de Wilson mais curtos (≈ 250 Ma). Os orógenos relacionados a esses dois tipos de ciclos são diversos: longos ciclos supercontinentais que terminam com a geração de orógenos do tipo Varisco, como o Panafricano (850-55 Ma) ou as Variscides (550-250 Ma); ciclos de Wilson curtos que termi...
Transição Ordovícico-Silúrico na Zona Centro-Ibérica: apenas um contacto estrat...
Tereso, V.; Dias, R.; Romão, José; Roseiro, José; Coke, Carlos; Fonseca, Rita; Ribeiro, A.SUMMARY: Although the Ordovician-Silurian transition in the Central-Iberian Zone is usually considered a normal stratigraphic one, recent studies shows that often the black-shales of the Lower Silurian control the development of shear zones subparallel to the main layers. This behavior has been observed, not only in the Marão-Alvão region, but also in other sectors like, the synclines of S. Mamede, Mação and Bu...
Food addiction and grazing: The role of difficulties in emotion regulation and ...
Ribeiro, A.; Sinval, J.; Félix, S.; Guimarães, C.; Machado, B. C.; Gonçalves, S.; Lourdes, M. de.; Conceição, E. M.University students are a vulnerable population to the development of disordered eating, such as food addiction (FA) and grazing. FA is an emerging concept characterized by an intense desire to eat hyper-palatable foods. Grazing is characterized by the repetitive and unplanned ingestion of food throughout a period of time. Both FA and grazing have been associated with increased scores of negative urgency (NU) a...
Ambiente de trabalho salutogénico num hospital privado: perceção dos enfermeiros
Maciel, Carla; Ferreira, Margarida; Ferreira, Carlos; Circuncisão, Nádia; Vidal, Diogo Guedes; Ribeiro, A.O ambiente de trabalho salutogénico em enfermagem carateriza-se por um conjunto de fatores com impactos significativos na qualidade e segurança em relação à prestação de cuidados, saúde e bem-estar dos profissionais, bem como da produtividade dos serviços e da instituição. A abordagem no “local de trabalho” promove intervenções precoces nos fatores de risco dos trabalhadores, sendo uma ação relevante na prevenç...
Atmospheric plasma immobilization of antimicrobial Zeolite loaded silver nanopa...
Padrão, Jorge; Ribeiro, Ana Isabel Ferreira; Pinheiro, I.; Ribeiro, A.; Bouça, V.; Moura, B.; Carvalho, A.; Silva, Carla Joana Santos Marinho1. Introduction Nosocomial infections, in particular problematic chronic wounds, are a ubiquitous general concern. This apprehension was acuted by the prevalence of multidrug resistant bacteria and emergence of Pandemics. Therefore, the development of novel and highly effective antimicrobial wound dressing comprising marginal or absent cytotoxicity to the patient is crucial. Plasma plays a key role in improving...
Teaching precision farming and entrepreneurship for European students: Sparkle ...
Valero, C.; Krus, A.; Barreiro, P.; Diezma, B.; Garrido-Izard, M.; Hernandez, N.; Moreda, G.; Correa, E.C.; Ramirez, J.J.; Muñoz, B.; Moya, A.; Lleó, L.Within the framework of the European project named ‘SPARKLE’, an online course was created after studying educational needs on precision agriculture (PA), state of the art of technologies and a prospective study of the commercial sector. Five educational and research institutions, high-tech farms and enterprises specializing in technology transfer created the syllabus of the course and the platform contents. Th...
The Paradox cl. ‘Vlach’ multiplication and rooting rates are strongly affected ...
Campos, M. D.; Peixe, A.; Barroso, J.; Rato, A. E.; Ribeiro, A.; Ribeiro, H.The multiplication and rooting rates achieved from in vitro cultured explants of Paradox cl. ‘Vlach’, proved to be highly affected by their position in the original shoot. Explants taken until the 3 rd internode below the apical meristem, when systematically subcultured each 30 th days, lost their multiplication capacity on each subculture, their regeneration efficiency becoming almost null after 5 subcultures....
Nuevos datos litoestratigráficos y tectónicos en el borde sur de la Zona Centro...
Ferreira, Paulo; Romão, José; Dias, R.; Ribeiro, A.RESUMEN: La revisión de la cartografía geológica en la región de Portalegre-Serra de S. Mamede reconoció una sucesión litoestratigráfica desde el Neoproterozoico hasta el Carbonífero inferior con características muy similares a aquellas ya iden tificadas en la sinforme Amêndoa-Carvoeiro. Las diferencias entre las dos sucesiones ocurren en las partes superior e inferior; se identificaron unidades del carbonífero...