Uma estratégia para auxiliar a identificação de portfólios por meio de mineração de textos.

Neste trabalho utilizou-se uma estratégia com base em mineração de textos para fornecer uma indicação dos atuais portfólios da Embrapa Informática Agropecuária. Para tanto, utilizaram-se, como dados, os projetos liderados por essa unidade nos últimos anos, de 2004 a 2010. A esses dados aplicou-se um processo de extração semiautomática do conhecimento, utilizando vocabulário controlado, filtragem estatística de atributos, agrupamento hierárquico de documentos, descrição única dos agrupamentos e várias interações usuários do processo. Os resultados obtidos foram satisfatórios, tendo passado apenas por validação subjetiva, mostrando que o processo pode ser aplicado a dados semelhantes.bitstream/item/56719/1/Livro-BolPesq28.pd

Effect of Low Strain Rate on Formability of Aluminium Alloy

Effect of low strain rate on formability of aluminium alloy 2014 by means of torsion test was performed. The presented experimental results exhibit decrease of the ductility with increase and decrease of ε and T, respectively, and optimal values of , ε T are thus obtained

Dynamic association between perfusion and white matter integrity across time since injury in Veterans with history of TBI.

ObjectiveCerebral blood flow (CBF) plays a critical role in the maintenance of neuronal integrity, and CBF alterations have been linked to deleterious white matter changes. Although both CBF and white matter microstructural alterations have been observed within the context of traumatic brain injury (TBI), the degree to which these pathological changes relate to one another and whether this association is altered by time since injury have not been examined. The current study therefore sought to clarify associations between resting CBF and white matter microstructure post-TBI.Methods37 veterans with history of mild or moderate TBI (mmTBI) underwent neuroimaging and completed health and psychiatric symptom questionnaires. Resting CBF was measured with multiphase pseudocontinuous arterial spin labeling (MPPCASL), and white matter microstructural integrity was measured with diffusion tensor imaging (DTI). The cingulate cortex and cingulum bundle were selected as a priori regions of interest for the ASL and DTI data, respectively, given the known vulnerability of these regions to TBI.ResultsRegression analyses controlling for age, sex, and posttraumatic stress disorder (PTSD) symptoms revealed a significant time since injury × resting CBF interaction for the left cingulum (p < 0.005). Decreased CBF was significantly associated with reduced cingulum fractional anisotropy (FA) in the chronic phase; however, no such association was observed for participants with less remote TBI.ConclusionsOur results showed that reduced CBF was associated with poorer white matter integrity in those who were further removed from their brain injury. Findings provide preliminary evidence of a possible dynamic association between CBF and white matter microstructure that warrants additional consideration within the context of the negative long-term clinical outcomes frequently observed in those with history of TBI. Additional cross-disciplinary studies integrating multiple imaging modalities (e.g., DTI, ASL) and refined neuropsychiatric assessment are needed to better understand the nature, temporal course, and dynamic association between brain changes and clinical outcomes post-injury

X-ray follow-ups of XSSJ12270-4859: a low-mass X-ray binary with gamma ray FERMI-LAT association

XSSJ1227.0-4859 is a peculiar, hard X-ray source recently positionally associated to the Fermi-LAT source 1FGLJ1227.9-4852/2FGLJ1227.7-4853. Multi-wavelength observations have added information on this source, indicating a low-luminosity low-mass X-ray binary (LMXB), but its nature is still unclear. To progress in our understanding, we present new X-ray data from a monitoring campaign performed in 2011 with the XMM-Newton, RXTE, and Swift satellites and combine them with new gamma-ray data from the Fermi and AGILE satellites. We complement the study with simultaneous near-UV photometry from XMM-Newton and with previous UV/optical and near-IR data. The X-ray history of XSSJ1227.0-4859 over 7yr shows a persistent and rather stable low-luminosity (~6x10^33 d_{1\,kpc}^2 erg/s) source, with flares and dips being peculiar and permanent characteristics. The associated Fermi-LAT source 2FGLJ1227.7-4853 is also stable over an overlapping period of 4.7\,yr. Searches for X-ray fast pulsations down to msec give upper limits to pulse fractional amplitudes of 15-25% that do not rule out a fast spinning pulsar. The combined UV/optical/near-IR spectrum reveals a hot component at ~13\,kK and a cool one at ~4.6\,kK. The latter would suggest a late-type K2-K5 companion star, a distance range of1.4--3.6kpc and an orbital period of 7--9 h. A near-UV variability (>6\,h) also suggests a longer orbital period than previously estimated. The analysis shows that the X-ray and UV/optical/near-IR emissions are more compatible with an accretion-powered compact object than with a rotational powered pulsar. The X-ray to UV bolometric luminosity ratio could be consistent with a binary hosting a neutron star, but the uncertainties in the radio data may also allow an LMXB black hole with a compact jet. In this case it would be the first associated with a high-energy gamma-ray source.Comment: 17 pages, 14 figures, 1 table; Accepted for publication in Astronomy & Astrophysics Main Journa

Espaços digitais de informação e comunicação: Agência Embrapa de Informação Tecnológica para dispositivos móveis.

O artigo analisa e propõe a incorporação de dispositivos móveis na organização e acesso de espaços digitais de informação e comunicação na Web. Admite-se que as mídias móveis tendem a ser amplamente adotadas por todos os segmentos da sociedade, inclusive no meio rural. Parte-se da experiência do website da Agência Embrapa de Informação Tecnológica (AGEITEC), que se constitui em um espaço digital para acesso via desktop, e propõe: a) o estabelecimento de uma metodologia de organização de conteúdos atinentes ao conceito de Web 2.0 móvel, destinados a apoiar ações comunicacionais em processos de transferência de tecnologia; b) a criação da AGEITEC Móvel (mAGEITEC), incorporando funcionalidades e ferramentas da Web 2.0 móvel. O artigo traz contribuições metodológicas e tecnológicas que podem subsidiar a elaboração de projetos de pesquisa no âmbito da criação de espaços digitais dedicados ao atendimento das necessidades de informação e comunicação de pessoas em mobilidade.ALAIC 2014

"Double trouble” or digenic disorder in Complex I deficiency

Complex I (CI) deficiency is a defect of OXPHOS caused by mutations in the mitochondrial or nuclear genomes. To date disease-causing mutations have been reported in all mitochondrial-encoded subunits and 22 nuclear genes. In about 50% of the patients no mutations are found, suggesting that undiscovered factors are an important cause of disease. In this study we report a consanguineous family from Southern Portugal with three affected children presenting with CI deficiency and 3-methylglutaconic aciduria type IV

Multimedia design and transmedia storytelling: content production for microtrainings.

This article presents an outline of model of the educational microcontent production for microtraining, built from the point of view that learning is a relational, intentional and experiential process, and, as such, it results from social interactions that also occur in labour spaces. The model, entitled "production cycle of pedagogical contents (microcontents)" is conceptually anchored in the theoretical precepts of transmedia storytelling and multimedia design, which in turn, are based in aspects of language, communication and cognition, bringing innovative elements capable of favouring leanings. In order to develop the model proposed and presented in the article, inherent conceptions to transmedia storytelling, multimedia design and education, are bound and articulated. Furthermore, one promotes the dialogue between non-formal education in the context of continuous formation and in the interest of technology transfer actions (TT) and of rural extension and technical assistance, for the formulation of microtraining activities via mobile devices. The essence of the model lies in the proposition of a sequence of steps that culminate in the production and organization of technological contents that incorporate pedagogical paths. Those paths serve as learnings favouring routes. It is accepted that this way of producing and organizing contents increases the chances of the subjects involved in the microtraining reflect upon and investigate their practices, abilities and experiences, thus helping them to resignify their realities and to build new rationalities to address their problems. The model "production cycle of pedagogical contents (microcontents)" was built to potentialize the chances of making microtrainings via mobile devices into massive actions that favour the TT process of Brazilian Agricultural Research Corporation (Embrapa), under a constructivist learning approach

Morphogenesis of Marandu Brachiaria Under Different Nitrogen Rates in the Brazilian Savannah

Nitrogen fertilization contributes to grass growth and, for this reason, the objective was to evaluate the morphogenic characteristics of Urochloa brizantha cultivar Marandu subjected to different nitrogen rates (0, 50, 100 and 150 kg N.ha-1) in the Brazilian savannah through the variables number of leaves.tiller-1, leaf growth, leaf average size, senescent leaf.tiller-1 number and stem+pseudostem average size. The experiment was established in the Forage and Pastures Sector of Jatai Federal University (UFJ) and, after the soil correction and fertilization, the Marandu grass plots were installed in a randomized blocks experimental design, with four treatments and four replications. When the forage canopy reached the cutting height (30 cm) it was homogenized with pruning shears and four tillers per plot were identified with colored tape and a locating stake. Morphogenesis data was collected every two days, measuring the leaves size and stem+pseudostem size, and leaves were classifying according to their physiological state. Marandu cultivar showed increasing response in leaves number and in leaf growth in nitrogen doses from 50 to 100 kg N.ha-1. The number of senescent leaf.tiller-1 decrease when nitrogen fertilization increase from 0 to 100 kg N.ha-1. Marandu showed a morphogenic response to nitrogen fertilization and up to 100 kg N.ha-1 can be used

Controle genético da resistência a murcha-de-fusário em feijoeiro comum.

Os objetivos do trabalho foram avaliar o controle genético da reação ao agente causal da murcha-de-fusário, a partir dos cruzamentos Milionário 1732 x Macanudo e FT Tarumã x Macanudo, e estimar parâmetros genéticos que permitam selecionar famílias resistentes à doença

Estimativa da Eto pelo modelo Penman-Monteith FAO com dados mínimos integrada a um Sistema de Informação Geográfica.

O objetivo do presente trabalho foi avaliar a metodologia de estimativa da EtoPM utilizando dados mínimos integrados a um Sistema de Informação Geográfica, na bacia do Jaguaribe, Ceará. Foi utilizado o sistema integrado de modelagem regional PRECIS (Providing Regional Climates for Impacts Studies), versão 1.2, utilizando as condições de contorno do Modelo Climático Global, HadAM3P, acoplado ao Modelo Climático Regional (HadRM3P), através da técnica dinâmica de redução de escala (downscaling). Dados mensais de temperaturas máxima e mínima e precipitação foram gerados para o período de 1961-1990, os quais foram analisados quanto a sua variabilidade espacial (latitude/longitude), utilizando-se geoestatística (krigagem). Para validação, foi aplicada regressão linear entre EtoPM estimada com dados mínimos e estimada com dados medidos através de uma estação meteorológica de referência. A média da EtoPM anual estimada com dados mínimos situou-se em 1.719 mm. A metodologia funcionou satisfatoriamente na região estudada, considerando-se os resultados da regressão (coeficiente angular de 0,95, coeficiente de determinação de 0,902, resíduos menores que 0,45 mm dia-1 e Raiz do Quadrado Médio do Erro (RQME) igual a 0,067 mm dia-1)