114 research outputs found
Desempenho agronômico de cultivares de pepino tipo salada na região de Manaus-AM.
Avaliacao do desempenho agronomico de cultivares de pepino tipo salada nas condicoes de terra firme, em Manaus-AM. De acordo com os resultados preliminares, os hibridos Runner, Safira e Sprint apresentaram desempenho produtivo bastante satisfatorio.bitstream/item/76044/1/CPAA-PESQ.-AND.-6-99.pd
Patógenos associados as cucurbitáceas cultivadas no Estado do Amazonas.
Suplemento. Trabalho apresentado no 40. Congresso Brasileiro de Olericultura, 2000
Efficient VLSI Implementation of Soft-input Soft-output Fixed-complexity Sphere Decoder
Fixed-complexity sphere decoder (FSD) is one of the most promising techniques for the implementation of multipleinput multiple-output (MIMO) detection, with relevant advantages in terms of constant throughput and high flexibility of parallel architecture. The reported works on FSD are mainly based on software level simulations and a few details have been provided on hardware implementation. The authors present the study based on a four-nodes-per-cycle parallel FSD architecture with several examples of VLSI implementation in 4 × 4 systems with both 16-quadrature amplitude modulation (QAM) and 64-QAM modulation and both real and complex signal models. The implementation aspects and details of the architecture are analysed in order to provide a variety of performance-complexity trade-offs. The authors also provide a parallel implementation of loglikelihood- ratio (LLR) generator with optimised algorithm to enhance the proposed FSD architecture to be a soft-input softoutput (SISO) MIMO detector. To the authors best knowledge, this is the first complete VLSI implementation of an FSD based SISO MIMO detector. The implementation results show that the proposed SISO FSD architecture is highly efficient and flexible, making it very suitable for real application
Evaluation of Musa spp. for resistance to moko disease (Ralstonia solanacearum, race 2).
The objetive this paper was to evaluate the reaction of 31 diploid (AA) genotypes to the inoculation with R. solanacearum, race 2, aiming at selecting resistant ones to be used as male parents in the banana breeding programme under conduction at the Embrapa Cassava and Fruit Crops (EMBRAPA-CNPMF), in the Manaus-AM (Brazil)
Doenças das cucurbitáceas no Estado do Amazonas.
Nos sistemas de produção da agricultura familiar, no Estado do Amazonas, as cucurbitáceas ocupam expressivas áreas, pois são espécies muito populares, de fácil colocação no mercado. As condições climáticas prevalecentes no Estado, caracterizadas por médias elevadas da precipitação anual, da temperatura e da umidade relativa do ar, não são fisiologicamente restritivas às exigências desse grupo de espécies tropicais. Entretanto, formam ambiente ideal para ocorrência e disseminação de patógenos. Nessas condições, os cultivos apresentam, frequentemente, sérios problemas fitossanitários, que afetam a qualidade dos produtos, e as perdas podem superam 70% da produção.bitstream/CPAA-2009-09/7055/1/circ_tec9.pd
Comparação de métodos de inoculação de Ralstonia solanacearum Raça 2 em cultivares de banana.
Edição dos resumos do 32º Congresso Brasileiro de Fitopatologia, 1999. Resumo 80
Avaliação da resistência de diploides de banana à Ralstonia solanacearum Raça 2.
Edição dos resumos do 32º Congresso Brasileiro de Fitopatologia, 1999. Resumo 79
X-ray standing wave and reflectometric characterization of multilayer structures
Microstructural characterization of synthetic periodic multilayers by x-ray
standing waves have been presented. It has been shown that the analysis of
multilayers by combined x-ray reflectometry (XRR) and x-ray standing wave (XSW)
techniques can overcome the deficiencies of the individual techniques in
microstructural analysis. While interface roughnesses are more accurately
determined by the XRR technique, layer composition is more accurately
determined by the XSW technique where an element is directly identified by its
characteristic emission. These aspects have been explained with an example of a
20 period Pt/C multilayer. The composition of the C-layers due to Pt
dissolution in the C-layers, PtC, has been determined by the XSW
technique. In the XSW analysis when the whole amount of Pt present in the
C-layers is assumed to be within the broadened interface, it l eads to larger
interface roughness values, inconsistent with those determined by the XRR
technique. Constraining the interface roughness values to those determined by
the XRR technique, requires an additional amount of dissolved Pt in the
C-layers to expl ain the Pt fluorescence yield excited by the standing wave
field. This analysis provides the average composition PtC of the
C-layers .Comment: 12 pages RevTex, 10 eps figures embedde
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