974 research outputs found

    Reaction of lima bean accessions to Meloidogyne javanica

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    Lima bean is one of the most popular leguminous plants in northeastern Brazil, with a strong socioeconomic influence on the regional communities. However, the low yield related to biotic and abiotic factors limits the increase in production. Among the biological agents, root-knot nematodes compromise its vegetative and productive development. In order to select genotypes resistant to Meloidogyne javanica, an experiment was carried out in a greenhouse and in a laboratory, in a completely randomized design, with fifteen lima bean accessions and five replicates. The reaction of lima bean accessions was evaluated through the infectivity and reproduction of M. javanica, as well as the main agronomic traits of the crop. A variation was observed in the resistance level among the accessions, with Lavandeira preta, Orelha de vó and Fava cearense being rated as very resistant, while Lavandeira vermelha was slightly resistant and the remaining accessions were all rated as susceptible

    A construção da imagem de treinadores desportivos na internet: estudo de caso em um site de notícias esportivas

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    Objetivo: Verificar como é construída a imagem dos treinadores desportivos, através da análise de um site de notícias esportivas de grande acesso. Metodologia: Os dados foram obtidos a partir da coleta de todas as notícias relativas a treinadores, durante um mês (de 15 de agosto a 15 de setembro de 2011). As notícias foram classificadas por modalidade e a partir da leitura na íntegra das mesmas, foram elaboradas categorias que representassem o modo pelo qual essa mídia transmitia a imagem dos treinadores. De todas as notícias sobre esporte (total de 7894) foram selecionadas 1048 notícias alusivas a treinadores. Dessas, 987 eram relacionadas a treinadores de futebol masculino de grandes clubes e apenas 62 sobre treinadores de outras modalidades. Resultados: Os jornalistas da mídia analisada têm prioridade em produzir notícias que tratam os técnicos desportivos como competentes ou incompetentes

    Níveis de lactato sanguíneo, em futebolistas profissionais, verificados após o primeiro e o segundo tempos em partidas de futebol

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    O objetivo desse estudo foi verificar o envolvimento do metabolismo anaeróbio lático por meio de medidas de lactato sanguíneo em futebolistas profissionais imediatamente após o término do primeiro e do segundo tempos, em partidas de futebol. Foram avaliados 26 jogadores, todos do sexo masculino e pertencentes ao Departamento de Futebol Profissional da Associação Portuguesa de Desportos de São Paulo. O grupo foi composto por 4 laterais, 13 meio-campistas e 9 atacantes. A idade variou de 18 a 33 anos, o peso de 56,5 kg a 78,5 kg e a estatura de 164 cm a 185 cm. A escolha dos futebolistas durante os procedimentos foi aleatória. Foi utilizado um analisador de lactato portátil (modelo Accusport®, Boehringer Mannheim®, GER). Os seguintes resultados foram verificados: a média de lactato em todos os jogadores verificados ao final do primeiro e do segundo tempos das partidas analisadas foi de 7,1 mM ± 0,6 mM e 5,7 mM ± 1,3 mM (p < 0,05). Quando divididos por posição, os laterais apresentaram respectivamente: 6,9 mM ± 2,9 mM e 4,7 mM ± 3,0 mM; os meiocampistas: 6,4 mM ± 1,8 mM e 5,6 mM ± 1,2 mM e os atacantes: 7,7 mM ± 1,8 mM e 7,2 ± 2,1 mM. Quando comparamos a produção de lactato pelas posições, somente houve diferença estatística significante (p < 0,05) no segundo tempo entre os atacantes 7,2 mM ± 2,1 mM e os meio-campistas 5,6 mM ± 1,2 mM, respectivamente. Conclusão: Fatores subjetivos como grau de movimentação, recuperação rápida e disposição constante na partida, relacionados a fatores primários como atividade glicolítica reduzida e a diminuição da concentração de glicogênio muscular, motivados por pouco treinamento anaeróbio lático específico e/ou uma dieta deficiente, são evidências que podem explicar, em parte, porque o lactato sanguíneo no segundo tempo tem sido freqüentemente mais baixo quando comparado ao término do primeiro tempo em uma partida de futebol.Lactate blood levels in professional socer players after end of the first and second half in soccer matches The main purpose of this study was to assess the participation of the anaerobic lactic metabolism by measuring the lactate blood level in professional soccer players shortly after the end of the first and second half in soccer matches. The assessment was carried out in 26 male soccer players belonging to the Department of Professional Soccer at Associação Portuguesa de Desportos in São Paulo – Brazil. The group was composed of 4 full-backs, 13 midfielders and 9 forwards. Whose age, weight and stature ranged, respectively, from 18 to 33, from 56.5 kg to 78.5 kg and from 164 cm to 185 cm. The soccer players were piecked at random during the procedure. The lactate analyser used to this end was a portable (Accusport model, Boehringer Mannheim, Germany). These were the results: the average lactate level in all soccer players examined after the end of the first half and the second half of the matches analyzed was 7.1 mM ± 0.6 mM and 5.7 mM ± 1.3 mM (p < 0.05). When divided according to their position, the full-backs showed, respectively, 6.9 mM ± 2.9 mM and 4.7 mM ± 3.0 mM; the midfielders 6.4 mM ± 1.8 mM and 5.6 mM ± 1.2 mM and the forwards 7.7 mM ± 1.8 and 7.2 ± 2.1 mM. When we compared the lactate production according to the position, there was only significant statistic (p < 0.05) in the second half between the forwards 7.2 mM ± 2.1 mM and the midfielders 5.6 mM ± 1.2 mM, respectively. Conclusion: Subjective factors, such as movement rate, quick recovery and constant disposition during the match related to primary factors, such as reduced glycolitic activity and diminished muscular glycogen concentration caused by little specific lactic anaerobic training and/or poor diet, are evidences that can partly explain why the lactate blood level in the second half has often been lower when compared with the end of the first half of a soccer match

    Identification of heavy-flavour jets with the CMS detector in pp collisions at 13 TeV

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    Many measurements and searches for physics beyond the standard model at the LHC rely on the efficient identification of heavy-flavour jets, i.e. jets originating from bottom or charm quarks. In this paper, the discriminating variables and the algorithms used for heavy-flavour jet identification during the first years of operation of the CMS experiment in proton-proton collisions at a centre-of-mass energy of 13 TeV, are presented. Heavy-flavour jet identification algorithms have been improved compared to those used previously at centre-of-mass energies of 7 and 8 TeV. For jets with transverse momenta in the range expected in simulated tt\mathrm{t}\overline{\mathrm{t}} events, these new developments result in an efficiency of 68% for the correct identification of a b jet for a probability of 1% of misidentifying a light-flavour jet. The improvement in relative efficiency at this misidentification probability is about 15%, compared to previous CMS algorithms. In addition, for the first time algorithms have been developed to identify jets containing two b hadrons in Lorentz-boosted event topologies, as well as to tag c jets. The large data sample recorded in 2016 at a centre-of-mass energy of 13 TeV has also allowed the development of new methods to measure the efficiency and misidentification probability of heavy-flavour jet identification algorithms. The heavy-flavour jet identification efficiency is measured with a precision of a few per cent at moderate jet transverse momenta (between 30 and 300 GeV) and about 5% at the highest jet transverse momenta (between 500 and 1000 GeV)

    Evidence for the Higgs boson decay to a bottom quark–antiquark pair

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    info:eu-repo/semantics/publishe

    Pervasive gaps in Amazonian ecological research

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    Pervasive gaps in Amazonian ecological research

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    Biodiversity loss is one of the main challenges of our time,1,2 and attempts to address it require a clear un derstanding of how ecological communities respond to environmental change across time and space.3,4 While the increasing availability of global databases on ecological communities has advanced our knowledge of biodiversity sensitivity to environmental changes,5–7 vast areas of the tropics remain understudied.8–11 In the American tropics, Amazonia stands out as the world’s most diverse rainforest and the primary source of Neotropical biodiversity,12 but it remains among the least known forests in America and is often underrepre sented in biodiversity databases.13–15 To worsen this situation, human-induced modifications16,17 may elim inate pieces of the Amazon’s biodiversity puzzle before we can use them to understand how ecological com munities are responding. To increase generalization and applicability of biodiversity knowledge,18,19 it is thus crucial to reduce biases in ecological research, particularly in regions projected to face the most pronounced environmental changes. We integrate ecological community metadata of 7,694 sampling sites for multiple or ganism groups in a machine learning model framework to map the research probability across the Brazilian Amazonia, while identifying the region’s vulnerability to environmental change. 15%–18% of the most ne glected areas in ecological research are expected to experience severe climate or land use changes by 2050. This means that unless we take immediate action, we will not be able to establish their current status, much less monitor how it is changing and what is being lostinfo:eu-repo/semantics/publishedVersio

    Search for heavy resonances decaying to a top quark and a bottom quark in the lepton+jets final state in proton–proton collisions at 13 TeV

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    info:eu-repo/semantics/publishe

    Penilaian Kinerja Keuangan Koperasi di Kabupaten Pelalawan

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    This paper describe development and financial performance of cooperative in District Pelalawan among 2007 - 2008. Studies on primary and secondary cooperative in 12 sub-districts. Method in this stady use performance measuring of productivity, efficiency, growth, liquidity, and solvability of cooperative. Productivity of cooperative in Pelalawan was highly but efficiency still low. Profit and income were highly, even liquidity of cooperative very high, and solvability was good
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