15 documents found, page 1 of 2
O papel dos sentidos na aquisição de competências essenciais na educação pré-es...
Silva, MaraO presente relatório é o resultado do projeto de investigação, desenvolvido no Mestrado em Educação Pré-Escolar e Ensino do 1º Ciclo do Ensino Básico, decorrente da prática de ensino supervisionada em contexto de Educação Pré-Escolar, junto de um grupo de crianças com idades compreendidas entre os 4 e os 5 anos, algumas das quais com necessidades de saúde especiais. A temática abordada no estudo prende-se com a...
O processamento sensorial e as competências de desenvolvimento das crianças dos...
Silva, MaraIntrodução: Os primeiros anos de vida da criança, são classificados como “Primeira Infância”, mais especificamente até aos cinco anos de idade. Estes anos são marcados por um rápido desenvolvimento do sistema nervoso central, durante o qual são adquiridas múltiplas competências funcionais que permitem à criança adotar gradualmente um comportamento favorável à aprendizagem, pela exploração do seu contexto atravé...
Chitosan Salts as Stabilizing Agents for the synthesis of Silver Nanoparticles ...
Carreiro, Elisabete P.; Teixeira, António P.S.; Costa, Marina; Burke, Anthony J.; Filho, Cesar; Gonçalves, Isabel; Craveiro, Alexandre; Silva, MaraIn this work, silver nanoparticles (AgNPs) were obtained by a chemical reduction method using different chitosan salts as stabilizing agents, able to protect and prevent against the aggregation of the nanoparticles. Various chitosan salts with different organic acids, which included: acetic, succinic, formic, propionic, malic, glycolic and lactic acid were used to form the chitosan salts. The use of these organ...
Valorisation of fresh olive oil pomace for biogas production
Barroso, Vitor C.; Ferreira, Leonor C.; Schwarz, Bjorn; Silva, Mara; Filipe, SusanaOlive oil is a liquid fat obtained by pressing whole olives and directly extracting the virgin oil through mechanical processes. The remaining residue is a liquid/solid mixture called olive oil pomace, containing about 60 to 80% water. The current methods to treat and valorise this residue require an intensive use of energy for removing the excess water to facilitate the chemical extraction of remaining oil sti...
Production and recovery of bacteriocins from cheese whey by fermentation and na...
Ribeiro, Susana C; Silva, Mara; Pflieger, Christian; Barroso, Vitor C; Filipe, Susana; Haertling, Thomas; Madruga, João; Silva, Célia CGIn the dairy industry, cheese production generates large quantities of liquid whey, the disposal of which is associated with environmental problems. However, cheese whey can be used as a nutrient medium to produce high-value compounds such as bacteriocins through fermentation with lactic acid bacteria (LAB). The application of new efficient methods for the concentration of functional food ingredients can give a...
Urinary tract infection in primary care: state of the art
Machado, Gabriela; Marinho, Ana; Afonso, Joana; Freitas, Marta; Silva, Mara; Coelho, RicardoIntroduction: Urinary tract infection (UTI) is the second most prevalent infection in the community. Aims: To determine the microorganisms responsible for UTI in Primary Health Care and their profile of sensitivity to antibiotics, as well as to evaluate if the approach of the UTI is concordant with the National Health Authority’s recommendations. Methods: Observational and retrospective study in four primary he...
The missing study: a characterization of peer education practice
Silva, Mara; Delerue Matos, Alice; Henriques, SusanaAs intervenções de educação pelos pares cresceram bastante nas últimas décadas, mas são reduzidos os estudos sociológicos sob o tema. Para colmatar esta lacuna, realizámos um levantamento exaustivo e uma caraterização de 67 projetos de educação pelos pares em Portugal. A informação fornecida pelos seus responsáveis foi tratada através de uma técnica de análise de conteúdo. Esta prática tem crescido através de p...
Production of Antagonistic Compounds by Bacillus sp. with Antifungal Activity a...
Silva, Mara; Rosado, T; Gonzalez-Pérez, M; Gobbo, D; Teixeira, D; Candeias, A; Caldeira, A TeresaAbstract: In recent years, the population has become acutely aware of the need to conserve the world’s resources. The study of new compounds produced by natural means is important in the search for alternative green solutions that act against biodeteriogenic fungi, which promote biodeterioration of built cultural heritage sites. The present paper reports new solutions, derived from Bacillus sp. CCLBH 1053 cultu...
On the conservation of easel paintings: evaluation of microbialcontamination an...
Salvador, Cátia; Bordalo, Rui; Silva, Mara; Rosado, Tânia; Candeias, Antonio; Caldeira, A TeresaEasel paintings have been considered one of the most important art expressions, constituting today outstanding works of art with important historic and cultural value. Unfortunately, due to the presence of several organic materials, these artworks have been affected by microbial contamination that among other factors can be responsible for different aesthetic and structural alterations. For this study, four eas...
Green mitigation strategy for cultural heritage: bacterial potential for biocid...
Silva, Mara; Rosado, Tânia; Teixeira, Dora; Candeias, António; Caldeira, A TeresaSeveral biosurfactants with antagonistic activity are produced by a variety of microorganisms. Lipopeptides (LPPs) produced by some Bacillus strains, including surfactin, fengycin and iturin are synthesized nonribosomally by mega-peptide synthetase (NRPS) units and they are particularly relevant as antifungal agents. Characterisation, identification and evaluation of the potentials of several bacterial isolates...