Mostrando recursos 1 - 20 de 86

  1. Produtos agrícolas transformados

    Duarte, Amílcar; Freitas, Maria de Belém Costa
    Em rigor, atualmente quase todos os produtos agrícolas sofrem algum tratamento antes de serem vendidos (lavagens, calibração, etc.); adicionalmente, e talvez mais importante, as indústrias genericamente conhecidas como indústrias agroalimentares, transformam matérias-primas agrícolas, tendo como produto final um bem alimentar, utilizado diretamente na alimentação humana, tendo como produto final um produto não destinado à alimentação humana (por exemplo, tabaco), ou ainda tendo como produto final um produto que apenas indiretamente se relaciona com a alimentação humana (por exemplo, rações). Finalmente, as matérias-primas agrícolas são ainda transformadas noutras indústrias, para diferentes fins (por exemplo, na indústria química). De acordo com Varela (1987)...

  2. Prospecção e defesa da paisagem urbana do Algarve (1965-70): a arquitetura tradicional e a preservação do património urbano na proposta da DGSU

    Ribeiro, Vítor; Costa, Miguel Reimão; Aguiar, José; Valverde, Isabel
    No contexto da sucessiva redefinição do conceito de património, a arquitetura vernácula tenderá a assumir a sua importância a partir da segunda metade do século passado, alcançando estatuto próprio na Carta sobre o Património Construído Vernáculo de 1999. Em Portugal, adquirem particular relevância os trabalhos desenvolvidos em diferentes âmbitos, desde a antropologia à arquitetura, passando pela agronomia e pela geografia, que culminariam em diferentes sínteses sobre o tema, alargadas a todo o território nacional continental. Essa abordagem só no final dos anos 60 viria a ser ensaiada, à escala da região do Algarve, no pioneiro trabalho desenvolvido pela equipa dirigida pelo Arq.º Cabeça Padrão, no âmbito da Secção de Defesa e Recuperação da Paisagem...

  3. Livro de resumos do IV colóquio nacional de horticultura biológica


    A agricultura biológica tem futuro e o futuro é hoje! É o mote do IV Colóquio Nacional de Horticultura Biológica, que decorre de 17 a 19 de março, no Anfiteatro Verde da Universidade do Algarve, em Faro. Uma iniciativa da Associação Portuguesa de Horticultura (APH) em parceria com a Universidade do Algarve e a Direção Regional de Agricultura e Pescas do Algarve. O IV Colóquio Nacional de Horticultura Biológica pretende ser um espaço de troca de conhecimento, de experiências e de debate que contribua para demonstrar o potencial produtivo, económico e ambiental da agricultura biológica (AB). Este modo de produção...

  4. Livro de resumos do IV colóquio nacional de horticultura biológica


    A agricultura biológica tem futuro e o futuro é hoje! É o mote do IV Colóquio Nacional de Horticultura Biológica, que decorre de 17 a 19 de março, no Anfiteatro Verde da Universidade do Algarve, em Faro. Uma iniciativa da Associação Portuguesa de Horticultura (APH) em parceria com a Universidade do Algarve e a Direção Regional de Agricultura e Pescas do Algarve. O IV Colóquio Nacional de Horticultura Biológica pretende ser um espaço de troca de conhecimento, de experiências e de debate que contribua para demonstrar o potencial produtivo, económico e ambiental da agricultura biológica (AB). Este modo de produção...

  5. Bioactive compounds of citrus as health promoters

    Duarte, Amílcar; Carvalho, Catarina; Miguel, Maria Graça
    Citrus are a group of fruit species, quite heterogeneous in many aspects, including chemical composition of the fruit. Since ancient times, some citrus fruits were used to prevent and cure human diseases. In the recent decades, it has been demonstrated that fruits can actually help prevent and cure some diseases and above all, they are essential in a balanced diet. Citrus fruits, as one of the groups of fruit species, with greater importance in the world, have been studied for their effects on human health. Some species of citrus were referred as potential antioxidant based therapy for heart disease, cancer...

  6. O perfil do designer e o papel do design nas empresas em Portugal

    Agapito, Dora; Almeida, Helena; Almeida, Marisa; Fernandes, Sílvia; Lacerda, António
    CIEO - Centro de Investigação para o Espaço e as Organizações, Universidade do Algarve; FCT - Fundação para a Ciência e Tecnologia

  7. The Holocene history of the Guadiana estuary as told by diatoms and chrysophyte cysts

    Gomes, A.; Boski, T.; Moura, Delminda; Szkornik, Katie; Connor, Simon; Witkowski, Andrzej
    In order to tell the history of the Guadiana Estuary since the Last Glacial Maximum, a core collected therein, and spanning more than 13200 cal. years B.P., was studied regarding its diatom and chrysophyte cyst fossil records. Additionally, a diatom-based transfer function was used to reconstruct paleo-salinity and paleo-duration of tidal inundation to better understand the estuary’s evolution in relation to sea-level rise and climate changes. This study identifies some important climatic events, such as the Allerød climatic optimum, the Younger Dryas and three dry and cold events at 10600, 9100 and 7600 cal. years B.P., most of which were...

  8. Digital modeling of the impact of the 1755 Lisbon earthquake

    Bostenaru, Maria; Panagopoulos, Thomas
    Toys have played a role in the development of 3D skills for architects. As a continuation of this, games, a subgenre of which are city building games, the father of all is SimCity, a variant of construction management games, underlay a socio-economic model. Outgoing from a general view of the role of toys and games in building the skills of architects, we focus on the modelling of the impact of earthquakes on urban areas. The particular case considered is Lisbon 1755, set into the context of related developments such as l'Aquila 2009 and Bucharest 1977. We examined the 3D modelling of the city, which can be the base...

  9. New models for innovative management and urban dynamics


    At a time of rapid economic change where the capacity of European cities to control their development towards a globally more sustainable development is at stake, it seems of utmost importance to identify the regimes, policies and tools that best suit land management strategies for urban dynamics within a general context characterized by globalization, fierce economic competitiveness, territorial competition and the strong need to conceive urban planning actions under the auspice of, for example, public-private partnerships or other innovative cooperative forms. Previous studies in urban development show the decisive importance of the public actor’s ability to mobilize the required land resources for the success...

  10. As moradas de casas do núcleo intramuros de Mértola: uma leitura preliminar da arquitetura doméstica entre o final do antigo regime e o início do século XX

    Costa, Miguel Reimão
    Com­ o ­presente­ artigo ­pretende-se caracterizar ­alguns dos­ temas ­que ­marcam a­ diversidade ­e transformação­ da arquitetura ­doméstica ­do ­núcleo ­intramuros de ­Mértola ­entre o ­fim ­do­ Antigo­ Regime ­e­ o­ primeiro quartel­ do ­século ­passado. ­Este propósito enquadra-se ­no ­projeto ­“Arquitetura tradicional­ da­ vila ­e­ do­ termo­ de Mértola",­através­ do ­qual­ se estende ­à­ arquitetura ­da ­habitação ­e­ ao património ­urbano­ a investigação­ que­ o­ Campo ­Arqueológico­ de­ Mértola­ tem desenvolvido,­em ­diversas ­parcerias,­ao longo­ de ­mais ­de trinta­ anos (Goméz­ Martínez,­2014).­É­ neste quadro­ que ­se pretende­ conferir ­ao ­presente ­estudo uma dimensão­ metodológica­ integradora compreendendo­ o ­recurso ­a­ diferentes instrumentos,­desde ­a­...

  11. Use of Essential Oils and Their Components against Multidrug-Resistant Bacteria

    Faleiro, Leonor; Miguel, Maria Graça
    Aromatic and medicinal plants, through their secondary metabolism, provide a complex mixture of volatile molecules known as essential oils. These volatile molecules exert antibacterial activity that has been used in folk medicine for centuries. During the last few decades, the emergence of antibacterial resistance has forced us to search for new and efficient antimicrobial agents. The significant number of studies on the use of essential oils and their components against multidrug-resistant bacteria, such as Acinetobacter baumannii, methicillin-resistant Staphylococcus aureus, Mycobacterium tuberculosis, and Pseudomonas aeruginosa show the exceptional potential of these natural products to curb the development of antibacterial resistance. Moreover,...

  12. Proceedings of the 12th International Conference on Technology in Mathematics Teaching ICTMT 12


  13. D. Pedro Sanches e a lenda dos cinco mártires de Marrocos

    Dias, Isabel Rosa
    D. Pedro Sanches e a lenda dos cinco mártires de Marrocos.

  14. Atmospheric halogen and acid rains during the main phase of Deccan eruptions: magnetic and mineral evidence

    Font, Eric; Fabre, Sébastien; Nedelec, A.; Adatte, T.; Keller, G.; Veiga-Pires, C.; Ponte, J.; Mirão, José; Khozyem, H.; Spangenberg, J. E.
    Environmental changes linked to Deccan volcanism are still poorly known. A major limitation resides in the paucity of direct Deccan volcanism markers and in the geologically short interval where both impact and volcanism occurred, making it hard to evaluate their contributions to the mass extinction. We investigated the low-magnetic-susceptibility interval just below the iridium-rich layer of the Bidart (France) section, which was recently hypothesized to be the result of paleoenvironmental perturbations linked to paroxysmal Deccan phase 2. Results show a drastic decrease of detrital magnetite and presence of scarce akaganeite, a hypothesized reaction product formed in the aerosols derived from reaction...

  15. Diversidade de artrópodes associados à oliveira (Olea europaea L.), no Algarve

    Gonçalves, Maria Albertina
    Este trabalho teve como objetivo principal estudar a abundância e a diversidade de artrópodes associados à cultura da oliveira (Olea europaea L.), no sul de Portugal (Algarve). Os estudos foram conduzidos em dois olivais diferentes, um situado no concelho de Olhão e outro no concelho de Loulé, ambos em modo de produção integrada. As técnicas de amostragem utilizadas consistiram na utilização de armadilhas de queda, armadilhas cromotrópicas adesivas de cor amarela com e sem feromona sexual, armadilhas delta com feromona sexual e base adesiva, e ainda coleta de material vegetal (raminhos com folhas, inflorescências e frutos). Os resultados obtidos indicam...

  16. Entomofauna associated with the olive tree in southern Portugal

    Gonçalves, Maria Albertina; Andrade, Laura
    Since 2004 several studies have been carried out in order to identify the main insect species that usually inhabiting the olive ecosystem. The field trials have taken place in two olive groves, one situated in Olhão and the other one in Loulé, both in Algarve and also under Integrated Pest Management (IPM). The sampling techniques used differ according to their purpose (sticky traps, pheromone traps, pitfall traps and samples of aerial parts of the trees such as inflorescences, leaves, fruits and branches). Results showed that the main insect pests of olive tree in southern Portugal were the olive fruit fly...

  17. An important well studied atmospheric reaction, O (1D) + H2

    Rio, Carolina; Brandão, João; Wang, Wenli
    Among the chemical reactions in atmosphere, the reaction of an excited oxygen atom, O (View the MathML source), with ground state molecular hydrogen, H2 (View the MathML source), has been one of the most studied both experimentally and theoretically. To describe this reaction, various potential energy surfaces have been calibrated and their dynamics has been studied using quantum mechanical and quasiclassical trajectory methods. The theoretical results have shown to be in good agreement with experiment. The main uncertainties arise in the low temperature rate constants and in the isotopic branching ratio when reacting with HD.

  18. The mode of antibacterial action of essential oils

    Faleiro, Leonor
    The antimicrobial activity of essential oils and their components has been recognized for a very long time. Essential oils (EOs) are made from a very complex mixture of volatile molecules that are produced by the secondary metabolism of aromatic and medicinal plants and can be obtained by distillation of different parts of plants. The large number of studies on the antimicrobial activity of EOs has allowed the scientific recognition of these compounds on the control of a wide range of microbial pathogens. The progresses made on the investigation of the mode of action of EOs against bacterial cell targets give...

  19. Shallow water tomography in a highly variable scenario

    Soares, C.; Jesus, S. M.
    In October 2000, SiPLAB and the Instituto Hidrográfico (IH - PN) conducted the IN-TIFANTE’00 sea trial in a shallow area off the Peninsula of Tróia, approximately 50 km south from Lisbon, in Portugal. The experiment itself and results obtained in most of the data set have been reported at various occasions in the last two years. This paper focuses on the data acquired during Event 2, where the acoustic propagation path was approximately range independent and the source ship was held on station at a constant range of 5.8 km from the vertical line array. Although these conditions were, in general,...

  20. Time-frequency approach to the study of underwater acoustic channel estimation and source reconstruction

    Gervaise, C.; Quinquis, A.; Martins, N.
    This communication presents a pre-processing scheme possibly included in the global methodology of passive tomography, in an underwater acoustic channel.

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