18,759 research outputs found

    Hierarchical Spatial Organization of Geographical Networks

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    In this work we propose the use of a hirarchical extension of the polygonality index as a means to characterize and model geographical networks: each node is associated with the spatial position of the nodes, while the edges of the network are defined by progressive connectivity adjacencies. Through the analysis of such networks, while relating its topological and geometrical properties, it is possible to obtain important indications about the development dynamics of the networks under analysis. The potential of the methodology is illustrated with respect to synthetic geographical networks.Comment: 3 page, 3 figures. A wokring manuscript: suggestions welcome

    The tetrazolium test for soybean seeds.

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    History. Principles of the test. Equipment and supplies. Seed evaluation. Diagnosis of the causes of soybean seed deterioration. Identification of levels of viability. Class 1 (very high vigor). Class 2 (high vigor). Class 3 (medium vigor). Class 4 (low vigor). Class 5 (very low vigor). Class 6 (non-viable). Class 7 (non-viable). Class 8 (dead seed). Recording and interpreting the results. Precision and accuracy of results. Advantages and limitations of the test. When the test should be applied.bitstream/item/67888/1/Documentos-115.pd

    Teste do hipoclorito de sódio para semente de soja.

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    bitstream/item/59319/1/37.pd

    Efeito da época de semeadura sobre a qualidade da semente de soja no Estado de Mato Grosso.

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    bitstream/item/77933/1/CNPSO-PESQ.-AND.-9-86.pd

    Recomendação do tratamento químico de sementes de soja (Glycine max (L.) Merrill.

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    bitstream/item/54004/1/12.pd

    Radiative decay Z_H-> \gamma A_H in the little Higgs model with T-parity

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    In the little Higgs model with T-parity (LHTM), the only tree-level kinematically allowed two-body decay of the Z_H boson is Z_H-> A_H H and thus one-loop induced two-body decays may have a significant rate. We study the Z_H-> \gamma A_H decay, which is induced at the one-loop level by a fermion triangle and is interesting as it depends on the mechanism of anomaly cancellation of the model. All the relevant two- and three-body decays of the Z_H gauge boson arising at the tree-level are also calculated. We consider a small region of the parameter space where the scale of the symmetry breaking f is still allowed to be as low as 500 GeV by electroweak precision data. We first analyze the scenario of a Higgs boson with a mass of 120 GeV. We found that the Z_H->\gamma A_H branching ratio can be of the order of a tree-level three-body decay and may be at the reach of detection at the LHC for f close to 500 GeV, but it may be difficult to detect for f=1 TeV. There is also an scenario where the Higgs boson has an intermediate mass such that the Z_H-> A_H H decay is closed, the Z_H-> \gamma A_H gets considerably enhanced and the chances of detection get a large boost.Comment: 19 pages, 9 figures, 2 table

    Produtividade de forragem de gramíneas tropicais consorciadas com milho safrinha.

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    Os sistemas de integração lavoura-pecuária têm como vantagem tanto a produção de grãos quanto a de forragem para alimentação animal e palhada para o plantio direto. O objetivo desse estudo foi a avaliação da produtividade de oito capins consorciados com o milho safrinha e a proporção de folha e colmo de cada capim
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