87 research outputs found

    Conservação da biodiversidade: teorias e a visão de agricultores guardiões de sementes crioulas e abelhas nativas

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    Questões relacionadas à conservação ambiental podem ser agrupadas em dois grandes veios: a visão ambientalista e a visão socioambientalista. Historicamente, viu-se a lógica ambientalista de conservação ganhar espaço e se tornar a principal referência neste campo. Dentro da visão socioambientalista existem algumas ações que se destacam no campo da conservação da biodiversidade, como é o trabalho acompanhado pelo Centro de Tecnologias Alternativas Populares (CETAP) através de grupos guardiões da agrobiodiversidade. Foi possível observar a importância do trabalho em grupo para as pessoas envolvidas, bem como os principais entraves enfrentados, apontando para a necessidade de atenção do poder público.Issues related to environmental conservation can be grouped into two major currents: the environmentalist vision and the socio-environmentalist vision. Historically, it was the logical environmental conservation gain space and become the main reference in this field. Within the socio-environmentalist view there are some actions that stand out in the field of biodiversity conservation, as is the work accompanied by the Technology Center Popular Alternatives (CETAP) through agrobiodiversity guardians groups. It was possible to observe the importance of group work for the people involved and the main obstacles faced, pointing to the need for attention of the public authorities.Eje A5: Sistemas de conocimientoFacultad de Ciencias Agrarias y Forestale

    Conservação da biodiversidade: teorias e a visão de agricultores guardiões de sementes crioulas e abelhas nativas

    Get PDF
    Questões relacionadas à conservação ambiental podem ser agrupadas em dois grandes veios: a visão ambientalista e a visão socioambientalista. Historicamente, viu-se a lógica ambientalista de conservação ganhar espaço e se tornar a principal referência neste campo. Dentro da visão socioambientalista existem algumas ações que se destacam no campo da conservação da biodiversidade, como é o trabalho acompanhado pelo Centro de Tecnologias Alternativas Populares (CETAP) através de grupos guardiões da agrobiodiversidade. Foi possível observar a importância do trabalho em grupo para as pessoas envolvidas, bem como os principais entraves enfrentados, apontando para a necessidade de atenção do poder público.Issues related to environmental conservation can be grouped into two major currents: the environmentalist vision and the socio-environmentalist vision. Historically, it was the logical environmental conservation gain space and become the main reference in this field. Within the socio-environmentalist view there are some actions that stand out in the field of biodiversity conservation, as is the work accompanied by the Technology Center Popular Alternatives (CETAP) through agrobiodiversity guardians groups. It was possible to observe the importance of group work for the people involved and the main obstacles faced, pointing to the need for attention of the public authorities.Eje A5: Sistemas de conocimientoFacultad de Ciencias Agrarias y Forestale

    Heavy-flavor production and medium properties in high-energy nuclear collisions --What next?

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    Open and hidden heavy-flavor physics in high-energy nuclear collisions are entering a new and exciting stage towards reaching a clearer understanding of the new experimental results with the possibility to link them directly to the advancement in lattice Quantum Chromo-Dynamics (QCD). Recent results from experiments and theoretical developments regarding open and hidden heavy-flavor dynamics have been debated at the Lorentz Workshop Tomography of the Quark-Gluon Plasma with Heavy Quarks, which was held in October 2016 in Leiden, The Netherlands. In this contribution, we summarize identified common understandings and developed strategies for the upcoming five years, which aim at achieving a profound knowledge of the dynamical properties of the quark-gluon plasma

    Automated motion analysis of bony joint structures from dynamic computer tomography images: A multi-atlas approach

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    Dynamic computer tomography (CT) is an emerging modality to analyze in-vivo joint kinematics at the bone level, but it requires manual bone segmentation and, in some instances, landmark identification. The objective of this study is to present an automated workflow for the assessment of three-dimensional in vivo joint kinematics from dynamic musculoskeletal CT images. The proposed method relies on a multi-atlas, multi-label segmentation and landmark propagation framework to extract bony structures and detect anatomical landmarks on the CT dataset. The segmented structures serve as regions of interest for the subsequent motion estimation across the dynamic sequence. The landmarks are propagated across the dynamic sequence for the construction of bone embedded reference frames from which kinematic parameters are estimated. We applied our workflow on dynamic CT images obtained from 15 healthy subjects on two different joints: thumb base (n = 5) and knee (n = 10). The proposed method resulted in segmentation accuracies of 0.90 ± 0.01 for the thumb dataset and 0.94 ± 0.02 for the knee as measured by the Dice score coefficient. In terms of motion estimation, mean differences in cardan angles between the automated algorithm and manual segmentation, and landmark identification performed by an expert were below 1◦. Intraclass correlation (ICC) between cardan angles from the algorithm and results from expert manual landmarks ranged from 0.72 to 0.99 for all joints across all axes. The proposed automated method resulted in reproducible and reliable measurements, enabling the assessment of joint kinematics using 4DCT in clinical routine

    QCD and strongly coupled gauge theories : challenges and perspectives

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    We highlight the progress, current status, and open challenges of QCD-driven physics, in theory and in experiment. We discuss how the strong interaction is intimately connected to a broad sweep of physical problems, in settings ranging from astrophysics and cosmology to strongly coupled, complex systems in particle and condensed-matter physics, as well as to searches for physics beyond the Standard Model. We also discuss how success in describing the strong interaction impacts other fields, and, in turn, how such subjects can impact studies of the strong interaction. In the course of the work we offer a perspective on the many research streams which flow into and out of QCD, as well as a vision for future developments.Peer reviewe

    Suppression of high transverse momentum D mesons in central Pb-Pb collisions at sNN=2.76  TeV \sqrt{{{s_{\mathrm{NN}}}}}=2.76\;\mathrm{TeV}

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    The future of percutaneous tricuspid valve interventions

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