4,056 research outputs found

    Towards a compact representation of temporal rasters

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    Big research efforts have been devoted to efficiently manage spatio-temporal data. However, most works focused on vectorial data, and much less, on raster data. This work presents a new representation for raster data that evolve along time named Temporal k^2 raster. It faces the two main issues that arise when dealing with spatio-temporal data: the space consumption and the query response times. It extends a compact data structure for raster data in order to manage time and thus, it is possible to query it directly in compressed form, instead of the classical approach that requires a complete decompression before any manipulation. In addition, in the same compressed space, the new data structure includes two indexes: a spatial index and an index on the values of the cells, thus becoming a self-index for raster data.Comment: This research has received funding from the European Union's Horizon 2020 research and innovation programme under the Marie Sklodowska-Curie Actions H2020-MSCA-RISE-2015 BIRDS GA No. 690941. Published in SPIRE 201

    A 22-Week-Old Fetus with Nager Syndrome and Congenital Diaphragmatic Hernia due to a Novel SF3B4 Mutation.

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    Nager syndrome, or acrofacial dysostosis type 1 (AFD1), is a rare multiple malformation syndrome characterized by hypoplasia of first and second branchial arches derivatives and appendicular anomalies with variable involvement of the radial/axial ray. In 2012, AFD1 has been associated with dominant mutations in SF3B4. We report a 22-week-old fetus with AFD1 associated with diaphragmatic hernia due to a previously unreported SF3B4 mutation (c.35-2A>G). Defective diaphragmatic development is a rare manifestation in AFD1 as it is described in only 2 previous cases, with molecular confirmation in 1 of them. Our molecular finding adds a novel pathogenic splicing variant to the SF3B4 mutational spectrum and contributes to defining its prenatal/fetal phenotype

    Melhoria da qualidade e produtividade de leite na RegiĂŁo Serrana do Rio de Janeiro

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    bitstream/item/81956/1/Melhoria-da-qualidade.pdfTrabalhos apresentados ao Rio Leite Serrano, Macuco, 2004

    Effect of an extract of Centella asiatica on the biodistribution of sodium pertechnetate (Na<sup>99m</sup>TcO<sub>4</sub>) and on the fixation of radioactivity on blood constituents

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    This study evaluates the effects of an acute treatment with a Centella asiatica (CA) extract on the biodistribution of the radiopharmaceutical Na99mTcO4 and on the fixation of technetium-99m on blood constituents. Wistar rats were treated with CA extract and, 1 hour after, Na99mTcO4 was administered; organs/tissues were withdrawn and weighted. The radioactivity was counted to calculate the percentage of activity per gram (%ATI/g). Also, blood samples were withdrawn, plasma (P), blood cells (BC), insoluble fraction (IF) and soluble fractions of P and BC were isolated and the radioactivity was counted to calculate the percentage of activity (%ATI). Data indicated that the acute treatment with CA extract changed significantly (p99mTcO4 and the fixation of the technetium-99m on blood constituents in an acute treatment

    Soldados, “guerra longa” e a sutil manutenção do império

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    Robert D. Kaplan é correspondente da revista The Atlantic Monthly (na qual tem publicado artigos sobre segurança internacional – alguns deles republicados em jornais brasileiros1), professor visitante da Academia Naval norte-americana, membro do Centro para uma Nova Segurança Americana (Center for a New American Security) e autor, além do volume supra-citado, de outros livros, que versam basicamente sobre relações internacionais e viagens2. Entre eles, destacamos Warrior Politics: Why Leadership Demands a Pagan Ethos (2002)3 e The Coming Anarchy: Shattering the Dreams of the Post Cold War (2001)4, que faz uma previsão das ameaças e conflitos “menores”, mas não menos perigosos, que emergem com o fim da Guerra Fria e o término da “estabilidade” bipolar do sistema internacional. Tais embates transformariam em pesadelo o até então sonho da vitória e proliferação da democracia liberal mundo afora. O establishment militar dos EUA, que até então funcionava muito bem quando se tratava de uma ameaça estatal (a então URSS), não pode afirmar que foi pego de surpresa: diversos autores, entre eles Martin van Creveld (The Transformation of War), Mary Kaldor (New and Old Wars) e o próprio Kaplan identificam a emergência das “novas guerras”, não mais necessariamente explicadas pelo recorte clássico trinitário do general prussiano Carl von Clausewitz
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