559 research outputs found
Petrophysical and geochemical characterization of the late-variscan Santa Eulália Plutonic Complex (Ossa-Morena Zone, Portugal)
The Santa Eulália Plutonic Complex (SEPC) is a calc-alkaline granitic body located in the
northern part of the Ossa Morena Zone, composed by a medium- to coarse-grained pink granite (G0
group) involving large elongated masses of mafic (gabbroic) to intermediate (granodioritic) rocks, M group, and a central gray monzonitic granite (G1 group) which present dominant medium granular
facies. A multidisciplinary study, including petrophysical, AMS and IRM measurements, and geochemical
data, elemental and isotopic (Nd and 18O), point out differences in magnetic behaviour, magnetic
lineations patterns and geochemical features, reflecting distinct petrogenetic processes at the level of the
magmatic sources and evolution, as well as the emplacement mechanisms of M, G0 and G1 facies
associated in the SEPC
Consumo não problemático de drogas ilícitas: experiências e estratégias de gestão dos consumos numa amostra portuguesa
Ambient intelligence in emotion based ubiquitous decision making
As the time goes on, it is a question of common sense to involve in the process of decision making people scattered around the globe. Groups are created in a formal or informal way, exchange ideas or engage in a process of argumentation and counterargumentation, negotiate, cooperate, collaborate or even discuss techniques and/or methodologies for problem solving. In this work it is proposed an agent-based architecture to support a ubiquitous group decision support system, i.e. based on the concept of agent, which is able to exhibit intelligent, and emotional-aware behaviour, and support argumentation, through interaction with individual persons or groups. It is enforced the paradigm of Mixed Initiative Systems, so the initiative is to be pushed by human users and/or intelligent agents
Ambient intelligence in emotion based ubiquitous decision making
As the time goes on, it is a question of common sense to involve in the process of decision making people scattered around the globe. Groups are cre- ated in a formal or informal way, exchange ideas or engage in a process of argumentation and counter- argumentation, negotiate, cooperate, collaborate or even discuss techniques and/or methodologies for problem solving. In this work it is proposed an agent-based architecture to support a ubiquitous group decision support system, i.e. based on the concept of agent, which is able to exhibit intelli- gent, and emotional-aware behaviour, and support argumentation, through interaction with individual persons or groups. It is enforced the paradigm of Mixed Initiative Systems, so the initiative is to be pushed by human users and/or intelligent agents
Fermentação contínua de cerveja utilizando levedura imobilizada em drêche
O ficheiro apresenta também a versão portuguesa publicada na página 41 do mesmo documento.Fundação para a Ciência e a Tecnologia (FCT) - SFRH / BPD / 3541 / 2000
Continuous beer fermentation with yeast immobilized on spent grains : the effect of operational conditions
Fundação para a Ciência e a Tecnologia (FCT) - SFRH / BPD / 3541 / 2000
Spent grains: a new support for brewing yeast immobilisation
A novel carrier obtained from spent grains, a brewing by-product, was used for brewing yeast immobilisation in a continuous bubble-column reactor. The multiple-layer cell adhesion to the carrier particles resulted in a maximum cell load of 430 mg dry cell gˉ¹ dry carrier (d.c.). After 120 h of reactor operation, the cell load of DEAEmodified carrier was below 40 mg dry cell gˉ¹ d.c. while the values for non-modified carrier reached at least
100 mg dry cell gˉ¹ d.c. The changes in substrate composition on the rate of yeast attachment and on its stability were also studied
Implicações da consciência morfológica no desenvolvimento da escrita
Este estudo tem dois objetivos:
1 Verificar se as crianças treinadas a usar princípios morfológicos necessários para escrever palavras derivadas com alteração de pronuncia do radical, obterão melhores resultados do que as crianças a quem esse ensino não é disponibilizado.
2 Examinar se a melhoria na correção da escrita anda a par com o aumento da capacidade de aceder, reconhecer e interpretar morfemas.
Estudos anteriores (Rosa 2003; Rosa e Nunes 2007) mostram que as crianças, antes do
terceiro ano de escolaridade, têm dificuldade em aceder a informação morfológica, mesmo que esta seja fornecida implicitamente através de “priming”.
Esta informação é indispensável para escrever o morfema-base de muitas palavras derivadas em que ocorrem alterações de pronúncia.
Estudos de intervenção vêm mostrando que a explicitação de regularidades morfológicas
contribui significativamente para a melhoria na escrita (Nunes e Bryant, 2006; Arranhado,
2010; Pires, 2010).
Nessa mesma linha de resultados, pretende-se aqui verificar o contributo de uma intervenção específica quer na melhoria da escrita de palavras derivadas que exigem considerações morfológicas quer na melhoria da capacidade para fazer análise morfémica de estímulos linguísticos.
Participaram neste estudo 53 crianças de ambos os sexos, do segundo ano do Ensino Básico,aleatoriamente divididas em dois grupos, experimental e de controlo. O grupo experimental foi submetido a um trabalho de explicitação da relação morfológica entre palavras base e derivadas e realizaram análise morfémica de estímulos linguísticos. O grupo de controlo não teve qualquer intervenção.
Os resultados revelaram uma significativa superioridade do grupo experimental, em relação ao grupo de controlo, na correção da escrita de palavras derivadas e no acesso à formação morfémica dos estímulos linguísticos.
4 Verificou-se igualmente uma relação significativa entre correção na escrita e capacidade para aceder à constituição morfémica de estímulos linguísticos.
Este estudo demonstra que é possível, através de um trabalho de intervenção específico, desenvolver a consciência morfológica em crianças do 2º ano de escolaridade e resultarem daí consequências positivas para a aprendizagem da escrita
Development of a foam-filled steel web sandwich panel for the rehabilitation of timber floors
Lightweight sandwich panels offer a prominent solution for the rehabilitation of timber floors. This paper addresses the development of a solution capable of continuous production for a foam-filled steel web sandwich panel for floor rehabilitation. The newly designed flooring solution is tested in full-scale quasi-static flexural campaigns. The tests validate the analytical design’s compliance with Ultimate limit state (ULS) and Serviceability limit state (SLS) requirements. Furthermore, the flexural behaviour is compared with analytical predictions for thin-walled members according to the effective width method, described in Eurocode 3. Different effective cross-section design assumptions are assessed to allow an accurate prediction of the panel’s response.This work was developed within the scope of the research project “Lightslab – Desenvolvimento de soluções inovadoras de lajes de painel sandwich”, supported by FEDER funds through the Operational Program for Operational Program for Competitiveness and Internationalization (POCI) and the Portuguese National Innovation Agency (ANI) – project no. 33865 [POCI-01-0247-FEDER-033865]. Furthermore, it was partly financed by FCT/MCTES through national funds (PIDDAC) under the R&D Unit Institute for Sustainability and Innovation in Structural Engineering (ISISE), under reference UIDB/04029/2020 (doi.org/10.54499/UIDB/04029/
2020), and under the Associate Laboratory Advanced Production and Intelligent Systems ARISE under reference LA/P/0112/2020. The 1st, 2nd and 3rd authors wish also to acknowledge the grants 2021.07696.BD, 2022.13310.BD and DFA/BD/8319/2020 respectively, provided by Fundação para a Ciência e a Tecnologia, IP (FCT), financed by European Social Fund and national funds through the FCT/MCTES. Acknowledgments are extended to LEST – Laboratório de Estruturas, for their technical and material suppor
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