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1,054 Research products, page 1 of 106

  • Rural Digital Europe
  • Open Access
  • Fundação para a Ciência e a Tecnologia, I.P.

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  • Open Access
    Authors: 
    Alfredo da Costa Pereira Júnior; Sofia L. J. Oliveira; José M. C. Pereira; Maria Antónia Amaral Turkman;
    Publisher: Public Library of Science (PLoS)
    Project: FCT | PTDC/MAT/118335/2010 (PTDC/MAT/118335/2010), FCT | SFRH/BD/44846/2008 (SFRH/BD/44846/2008), FCT | SFRH/BPD/48090/2008 (SFRH/BPD/48090/2008), FCT | PEst-OE/MAT/UI0006/2011 (PEst-OE/MAT/UI0006/2011)

    Covering almost a quarter of Brazil, the Cerrado is the world’s most biologically rich tropical savanna. Fire is an integral part of the Cerrado but current land use and agricultural practices have been changing fire regimes, with undesirable consequences for the preser...

  • Open Access
    Authors: 
    Crismeire Isbaex; Ana Margarida Coelho;
    Publisher: IntechOpen
    Project: FCT | UIDB/05183/2020 (UIDB/05183/2020)

    Mapping land-cover/land-use (LCLU) and estimating forest biomass using satellite images is a challenge given the diversity of sensors available and the heterogeneity of forests. Copernicus program served by the Sentinel satellites family and the Google Earth Engine (GEE...

  • Open Access English
    Authors: 
    Thiago S. Alves; M. Alice Pinto; Paulo Ventura; Cátia J. Neves; David G. Biron; Arnaldo Cândido Júnior; Pedro Luiz de Paula Filho; Pedro João Rodrigues;
    Publisher: HAL CCSD
    Countries: Portugal, France
    Project: FCT | BiodivERsA/0002/2014 (BiodivERsA/0002/2014)

    In a scenario of worldwide honey bee decline, assessing colony strength is becoming increasingly important for sustainable beekeeping. Temporal counts of number of comb cells with brood and food reserves offers researchers data for multiple applications, such as modelli...

  • Open Access English
    Authors: 
    Thomas Panagopoulos; Jorge Mendes de Jesus; Jiftah Ben-Asher;
    Publisher: Multidisciplinary Digital Publishing Institute
    Country: Portugal
    Project: FCT | SFRH/BD/8303/2002 (SFRH/BD/8303/2002)

    Geostatistical tools were used to estimate spatial relations between wheat yield and soil parameters under organic farming field conditions. Thematic maps of each factor were created as raster images in R software using kriging. The Geographic Resources Analysis Support...

  • Open Access English
    Authors: 
    Pinto Rebelo, J.L.;
    Project: FCT | SFRH/BD/69564/2010 (SFRH/BD/69564/2010)

    Robots are particularly well suited for executing tasks that take place in locations which are too dangerous or inaccessible to human operators. For robot manipulators to execute complex activities in unknown, unstructured environments, despite the recent increases in c...

  • Open Access
    Authors: 
    Vieira, Filipe G.; Fôret, S.; He, Xiaoli; Rozas Liras, Julio A.; Field, L. M.; Zhou, J.-J.;
    Countries: United Kingdom, Spain, Spain
    Project: FCT | SFRH/BD/22360/2005 (SFRH/BD/22360/2005)

    Insects are the most diverse group of animals on the planet, comprising over 90% of all metazoan life forms, and have adapted to a wide diversity of ecosystems in nearly all environments. They have evolved highly sensitive chemical senses that are central to their inter...

  • Open Access
    Authors: 
    Joana Vieira; Filipe Campelo; Cristina Nabais;
    Publisher: Canadian Science Publishing
    Country: Portugal
    Project: FCT | POCI/CLI/58680/2004 (POCI/CLI/58680/2004)

    Climate projections for the Mediterranean area estimate a decline in total precipitation, warmer temperatures, and a higher frequency of extreme drought events. It is important to understand how trees respond to these climatic changes and which wood anatomical structure...

  • Publication . Conference object . 2009
    Open Access
    Authors: 
    Ali Marjovi; João Gonçalo Nunes; Lino Marques; Anibal T. de Almeida;
    Publisher: IEEE
    Project: FCT | SFRH/BD/45740/2008 (SFRH/BD/45740/2008)

    Exploration of an unknown environment is a fundamental concern in mobile robotics. This paper presents an approach for cooperative multi-robot exploration, fire searching and mapping in an unknown environment. The proposed approach aims to minimize the overall explorati...

  • Open Access
    Authors: 
    Joana Luísa Pereira; Sara C. Antunes; Ana C. Ferreira; Fernando Gonçalves; Ruth Pereira;
    Publisher: Informa UK Limited
    Country: Portugal
    Project: FCT | POCI/AMB/60899/2004 (POCI/AMB/60899/2004)

    Soil avoidance by earthworms has been generally considered a relevant and sensitive endpoint for assessing soil contamination by xenobiotics. However, when pesticide ecotoxicological assessment is concerned, the sensitivity of the recently standardized avoidance assay h...

  • Open Access
    Authors: 
    María Villa; Rosalina Marrão; António Mexia; Albino Bento; José Alberto Pereira;
    Publisher: Springer Science and Business Media LLC
    Country: Portugal
    Project: FCT | EXCL/AGR-PRO/0591/2012 (EXCL/AGR-PRO/0591/2012), FCT | PEst-C/EQB/LA0006/2013 (PEst-C/EQB/LA0006/2013)

    The use of non-crop resources by natural enemies and their potentialities to enhance their effectiveness as pest control agents is increasing as a method for conservation biological control. Nevertheless, the effect of consumption of non-crop resources by pests has been...