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- A formação em contexto de trabalho nas escolas profissionaisPublication . Silva, José ManuelOs cursos ministrados nas Escolas Profissionais asseguram a possibilidade de continuar estudos académicos, mas o seu objectivo prioritário, e uma das suas características mais marcantes, é a formação de técnicos qualificados imediatamente inseríveis numa função profissional. No entanto, a consecução deste objectivo impõe às escolas a partilha da sua responsabilidade formativa com outros agentes, designadamente empresas e instituições capazes de proporcionarem aos formandos experiências profissionais e condições de aprendizagem prática em contexto real que as escolas jamais poderão garantir sozinhas. Torna-se, por isso, necessário encontrar modalidades de relacionamento com empresas / instituições que permitam estabelecer acordos quanto à definição dos níveis de responsabilidade na formulação dos perfis profissionais, na organização e desenvolvimento curricular e na avaliação dos cursos.
- A propósito do Cancioneiro de D. DinisPublication . Nobre, Cristina
- Induction of xylanolytic activity by Aureobasidium pullulans using xerographic paperPublication . Marques, Susana; Gírio, Francisco M.; Pala, Helena; Gama, Francisco Miguel; Mota, Manuel; Amaral-Collaço, M. T.
- Preliminary studies on enzymatic deinkingPublication . Pala, Helena; Gama, Francisco Miguel; Gírio, Francisco M.; Amaral-Collaço, M. T.; Mota, Manuel
- O jogo no ensino-aprendizagem da línguaPublication . Barbeiro, Luís
- Effects of enzymatic treatment and refining on the properties of recycled pulpPublication . Pala, Helena; Mota, Manuel; Gama, Francisco MiguelThe effect of refining and enzymatic treatment on secondary fibre properties is shown. The following treatment sequences were studied: (i) refining; (ii) refining + enzymatic treatment; (iii) enzymatic treatment + refining; (iv) enzymatic treatment. The effectiveness of the methods was evaluated by measuring physical and mechanical properties of pulp and paper (drainage rate, burst, tensile and tear indexes). The obtained data revealed that combined refining and enzymatic treatment can be considered as a valuable methodology to upgrade recycled pulps. The first is responsible for increasing burst and tensile resistance. The second, if developed under controlled conditions, alloes better drainage, with only slight variation on paper mechanical properties.
- Percursos e projectos de vida: o processo de construção das atitudes dos professoresPublication . Vieira, RicardoApresenta-se o estudo de histórias de vida de nove professores com o intuito de entender a sua mente cultural que governa as práticas pedagógicas e influencia as suas representações sociais.
- Preliminary studies on enzymatic deinkingPublication . Pala, Helena; Gama, Francisco Miguel; Mota, ManuelResults on enzymatic deinking of paper pulps are shown. The process includes paper pulping, with an enzymatic cocktail, followed by flotation and dewatering. Three different wastepaper samples were used and tested. The deinking of the pulp was monitored by image analysis. Physical, mechanical and optical properties of pulp and paper were also determined. The obtained data revealed the effectiveness of the assayed enzyme preparation. However, enzyme use needs further optimisation as paper strenght properties suffered important alteration.
- Induction of xylanolytic activity in Aureobasidium pullulans using xerographic paperPublication . Marques, Susana; Gírio, Francisco M.; Amaral-Collaço, M. T.; Pala, Helena; Gama, Francisco Miguel; Mota, ManuelThe possibility of using cheaper culture media for endo-1,4-b-xylanase production by the color variant-derivative strain of Aureobasidium pullulans Y-2311-1, one of the known best producers of this activity, was investigated. Of all the studied alternative substrates, xerographic paper showed to be the best inducer of xylanolytic activity of this strain, using different carbon sources. The highest extracellular xylanase activity obtained was 15 U/mL when using lactose as the carbon source in the presence of xerographic paper.
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