Encontrados 50 documentos, a visualizar página 1 de 5
A bacteriophage detection tool for viability assessment of Salmonella cells
Fernandes, E.; Martins, V. C.; Nóbrega, Cláudia; Carvalho, Carla A. O. C. M.; Cardoso, F. A.; Cardoso, S.; Dias, J.; Deng, D.; Kluskens, LeonAvailable online 7 September 2013 ; Salmonellosis, one of the most common food and water-borne diseases, has a major global health and economic impact. Salmonella cells present high infection rates, persistence over inauspicious conditions and the potential to preserve virulence in dormant states when cells are viable but non-culturable (VBNC). These facts are challenging for current detection methods. Culture...
Bioactive macro/micro porous silk fibroin/Nano-sized calcium phosphate scaffold...
Yan, Leping; Correia, Joana Silva; Correia, C.; Caridade, S. G.; Fernandes, E. M.; Sousa, R. A.; Mano, J. F.; Oliveira, Joaquim M.; Oliveira, A. L.Aim: The development of novel silk/nano-sized calcium phosphate (silk/nano-CaP) scaffolds with highly dispersed CaP nanoparticles in the silk fibroin (SF) matrix for bone tissue engineering. Materials & methods: Nano-CaP was incorporated in a concentrated aqueous SF solution (16 wt.%) by using an in situ synthesis method. The silk/nano-CaP scaffolds were then prepared through a combination of salt-leaching/ lyo...
Hybrid cork-polymer composites containing sisal fibre : morphology, effect of t...
Fernandes, E. M.; Mano, J. F.; Reis, R. L.In this study, we investigated the use of short sisal fibre with and without polyethylene-graft-maleic anhydride (PE-g-MA) as a strategy to reinforce cork–polymer composite (CPC) materials. The use of alkali treatment of sisal to improve fibre–matrix adhesion was evaluated. High density polyethylene (HDPE) was used as matrix and the composites were produced in a two-step process using twin-screw extruder follow...
New functionalization - reinforcement strategies for cork plastics composites :...
Fernandes, E. M.Tese de doutoramento em Engenharia de Materiais ; Advances on forest-based composites, shows a growing trend in the use of lignocellulosic materials as filler and/or reinforcement in plastic composites. Cork-Polymer Composites (CPC) is one of the most promising fields in cork technology to produce new materials based on sustainable development. Cork combined with polymer matrices, has the prospective of lead t...
Novel cork-polymer composites reinforced with short natural coconut fibres : ef...
Fernandes, E. M.; Correlo, V. M.; Mano, J. F.; Reis, R. L.Composites from high density polyethylene filled with cork powder and coconut short fibres, in two different ratios, were prepared in a twin-screw extruder followed by compression moulding process. The main motivation of this work was to improve the mechanical performance without compromising the use of high weight percentage of natural component used in the preparation of cork-based composites. The morphology ...
New biotextiles for tissue engineering : development, characterization and in v...
Almeida, L. R.; Martins, A. R.; Fernandes, E. M.; Oliveira, Mariana B.; Correlo, V. M.; Pashkuleva, I.; Marques, A. P.; Ribeiro, Ana S.This work proposes biodegradable textile-based structures for tissue engineering applications. We describe the use of two polymers, polybutylene succinate (PBS) proposed as a viable multifilamentand silk fibroin (SF), to produce fibre-based finely tuned porous architectures by weft knitting. PBS is here proposed as a viable extruded multifilament fibre to be processed by a textile-based technology. A comparativ...
Aplicação computacional para o cálculo das canalizações eléctricas segundo as R...
Marta, Élia Sofia da Conceição Fernandes eTese de mestrado integrado. Engenharia Electrotécnica e de Computadores (Major Energia). Faculdade de Engenharia. Universidade do Porto. 2010
Relações entre moral, autocontrolo e comportamento desviante: um estudo empíric...
Teresa Patrícia Fernandes e SousaCom esta investigação assente em dados recolhidos junto de adolescentes portugueses, com idades entre os 10 e os 17 anos, de três escolas do distrito do Porto, procuramos contribuir para um melhor entendimento da relação entre autocontrolo, moralidade e comportamento desviante. No primeiro estudo, com dados de 347 questionários autorrevelados, os resultados mostram que o autocontrolo desempenha um importante pa...
Como se nasce na região centro : análise dos partos nos hospitais do SNS
Ribeiro, Ana Vanessa Fernandes e Gonzalez Rosete Tomás.O presente trabalho tem por finalidade a caracterização do panorama dos partos nos hospitais do Serviço Nacional de Saúde da região centro. A relevância do estudo decorre do facto de (i) por uma lado, ser consensual que cuidados de saúde adequados prestados à grávida e ao recém-nascido diminuem a mortalidade e morbilidade materno-fetal e (ii) por outro lado, do reconhecimento de que é cada vez mais importante m...
Development of macro/micro porous silk fibroin scaffolds with nano-sized calciu...
Yan, Leping; Correia, Cristina; Correia, Joana Silva; Caridade, S. G.; Fernandes, E. M.; Mano, J. F.; Sousa, R. A.; Oliveira, Joaquim M.Macro/micro porous silk scaffolds with nano-sized calcium phosphate (CaP) particles were developed for bone tissue engineering. Different amounts of nano-sized CaP particles 4, 8, 16 and 25% (CaP:silk fibroin, wt/wt) were generated into the highly concentrated aqueous silk fibroin solutions via an in-situ approach. Afterwards, the pure silk and silk/nano-CaP porous scaffolds were produced by a combination of sa...
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