813 research outputs found

    Método EPS para manejo da irrigação de forrageiras.

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    bitstream/CPPSE-2010/19159/1/PROCICircT63FCM2009.00422.pd

    Reação de acessos silvestres de Solanum atramonifolium A. Fusarium oxysporum f. sp. lycopersici Raça 3.

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    O objetivo deste trabalho foi avaliar a reação de 25 acessos silvestres de Solanum stramonifolium (jurubeba Juna), 3 de Solanum melongena e híbridos interespecíficos de Solanum aethiopicum × S. melongena, S. aethiopicum × S. licocarpum e S. scuticum × S. torvum para resistência a Fusarium oxysporum f. sp. lycopersici raça 3.Resumo 18

    Comparison of Predicted and Experimental Behaviour of RC Slabs Subjected to Blast using SDOF Analysis

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    Explosions emanating from terrorist attacks or military weapons cause damage to civilian and military facilities. Understanding the mechanical behaviour of reinforced concrete structures subjected to blast is of paramount importance for minimizing the possible blast damage. A full-scale experimental program consisting of six reinforced concrete slabs with compressive strengths of 60 MPa, 50 MPa and 40 MPa, measuring 1.0 m × 1.0 m × 0.08 m, and subjected to 2.7 kg of non-confined plastic bonded explosive, was conducted in blast test area of Science and Technology Aerospace Department (Brazilian Air Force). This paper compares experimentally measured peak displacement values with theoretical values. Theoretical analysis was carried out using single degree of freedom (SDOF) models. The comparison showed that SDOF analysis worked very well in predicting the reinforced concrete slab peak displacement against blast effects. Qualitative analysis after the experiments showed that the blast wave shape generated by the cylindrical explosive was not uniformly distributed on the slabs for the standoff distance of 0.927 m∕kg1/3

    Compatibilidade de porta-enxertos de Capsicum baccatum com pimentão no Distrito Federal.

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    Avaliou-se a compatibilidade entre oito acessos de C. baccatum que apresentam alto vigor e potencial para uso como portaenxerto do banco de germoplasma da Embrapa Hortaliças, e o pimentão 'Margarita'. Como testemunha, utilizaram-se materiais de C.annuum: o híbrido comercial Snooker, um Híbrido Simples Experimental (HSE) da Embrapa Hortaliças e plantas de 'Margarita' não enxertadas.CD-ROM. Suplemento. Trabalho apresentado no 51. Congresso Brasileiro de Olericultura, Viçosa, MG

    Pesquisa, desenvolvimento e inovação em pinhão-manso para produção de biocombustíveis.

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    Características e potencial da cultura para o mercado de biodiesel; Lacunas de conhecimento e desafios para pesquisa; Situação atual e perspectivas de pesquisa; Banco de germoplasma (BAG-Jatropha) e caracterização de pinhão-manso; Descritores botânicos para pinhão-manso (Jatropha curcas L.); Registro de cultivares e melhoramento de pinhão manso; Possibilidades de parceria, cooperação técnica e financeira; Apropriação de resultados.bitstream/item/17976/1/DOC01.pd

    Gerber File Parsing for Conversion to Bitmap Image–The VINCI7D Case Study

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    The technological market is increasingly evolving as evidenced by the innovative and streamlined manufacturing processes. Printed Circuit Boards (PCB) are widely employed in the electronics fabrication industry, resorting to the Gerber open standard format to transfer the manufacturing data. The Gerber format describes not only metadata related to the manufacturing process but also the PCB image. To be able to map the electronic circuit pattern to be printed, a parser to convert Gerber files into a bitmap image is required. The current literature as well as available Gerber viewers and libraries showed limitations mainly in the Gerber format support, focusing only on a subset of commands. In this work, the development of a recursive descent approach for parsing Gerber files is described, outlining its interpretation and the renderization of 2D bitmap images. All the defined commands in the specification based on Gerber X2 generation were successfully rendered, unlike the tested commercial parsers used in the experiments. Moreover, the obtained results were comparable to those parsers regarding the commands they can execute as well as the ground-truth, emphasizing the accuracy of the proposed approach. Its top-down and recursive architecture allows easy integration with other software regardless of the platform, highlighting its potential inclusion and integration in the production of electronic circuits.info:eu-repo/semantics/publishedVersio

    Reação de acessos de Solanum stramonifolium A Meloidogyne enterolobil.

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    O objetivo deste trabalho foi avaliar a reação de dezessete acessos de Solanum stramonifolium, orindos de municípios da região norte e nordeste do Brasil

    Critical periods of sorghum and palisadegrass in intercropped cultivation for climatic risk zoning.

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    The objective of this work was to define critical periods for sorghum and palisadegrass cultivated on crop-livestock integrated systems under water deficit. An experiment was carried out in a completely random block design with four treatments (control and interruption of water supply in three periods) and three replicates. Water supply was interrupted until soil water humidity was close to permanent wilting point at the phases: germination of palisadegrass seeds; start of tillering of palisadegrass and initiation of panicles of shorghum; start of shorghum flowering. Water deficit starting at palisadegrass germination delayed intital development of the plants because of the reduction in tillering. Water restriction at panicle initiation phase and at sorghum flowering determined reduction of grain production. Critical periods for intercrop of sorghum and palisadegrass correspond to palisadegrass germination phase and flowering and panicle inititation phase of sorghum

    Cana-de-açúcar cultivada em solo adubado com lodo de esgoto: nutrientes, metais pesados e produtividade.

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    A pesquisa objetivou avaliar o uso de lodo de esgoto (Le) na adubação de soqueira (2o corte) de cana-de-açúcar (Saccharum spp., var. RB72-454). Aplicou-se Le ao solo, localizando-o no fundo de um sulco com 15 cm de profundidade e distando 40 cm da linha de cana. Avaliaram-se os efeitos das doses do Le (0, 15 e 30 t.ha-1) nas produtividades de biomassa e de açúcar, nos teores de nutrientes e de metais pesados do solo e da planta. O Le diminuiu a acidez potencial (H + Al) do solo e forneceu nutrientes para a cana-de-açúcar, principalmente P, S, Ca, Cu e Zn, o que refletiu em aumentos de produtividades de colmos e de açúcar por hectare. O Le causou aumentos de exportações de P, S, Ca, Cu, K, Mg e Ni pela parte aérea da cana-de-açúcar; tais aumentos, por sua vez, foram motivados pelos aumentos dos teores destes elementos no tecido vegetal, e da produtividade em biomassa. Os metais pesados (Cd, Cr, Ni e Pb), contidos no Le, não apresentaram perigo à cadeia trófica à curto prazo
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