8,125 research outputs found

    Sistema de Gestão das Soluções Tecnológicas da Embrapa - Gestec.

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    O objetivo deste trabalho é descrever o processo de alimentação da plataforma com informações de novas tecnologias desenvolvidas pela Embrapa e, em especial, pela Embrapa Informática Agropecuária, assim como a atualização das tecnologias já finalizadas pela Unidade

    Análise morfológica de acessos de mandioca identificados como duplicatas de acessos com base em marcadores moleculares.

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    A mandioca (Manihot esculenta Crantz) apresenta ampla variabilidade genética decorrente da polinização cruzada e da alta heterozigosidade da espécie. A pesquisa com recursos genéticos desta espécie é o ponto de partida para viabilizar a pesquisa com recursos genéticos, visando o correto manejo do germoplasma e a formação de uma base de dados que garanta informação consistente ao melhorista

    ANALYTICAL SOLUTION OF A 2D TRANSIENT HEAT CONDUCTION PROBLEM USING GREEN´S FUNCTIONS

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    Through the present work the authors determined the analytical solution of a transient two-dimensional heat conduction problem using Green’s Functions (GF). This method is very useful for solving cases where heat conduction is transient and whose boundary conditions vary with time. Boundary conditions of the problem in question, with rectangular geometry, are of the prescribed temperature type - prescribed flow in the direction x and prescribed flow - prescribed flow in the direction y, implying in the corresponding GF given by GX21Y22. The initial temperature of the space domain is assumed to be different from the prescribed temperature occurring at one of the boundaries along x. The temperature field solution of the two-dimensional problem was determined. The intrinsic verification of this solution was made by comparing the solution of a 1D problem. This was to consider the incident heat fluxes at y = 0 and y = 2b tending to zero, thus making the problem one-dimensional, with corresponding GF given by GX21. When comparing the results obtained in both cases, for a time of t = 1 s, it was seen that the temperature field of both was very similar, which validates the solution obtained for the 2D problem

    O fungo Beltrania sp. em pupunheira no Estado do Amapá.

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    Introdução; Sintomas; Agente causal; Controle.bitstream/CPAF-AP/8687/1/Folder200431.PDF1 folder

    Tecnologia Web para suporte ao licenciamento ambiental.

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    Ferramentas computacionais que disponibilizem informações geográficas e descritivas sobre temas relacionados aos recursos ambientais potencializam agilidade e eficiência a vários processos de gestão ambiental, em especial aos relacionados com licenciamento ambiental.bitstream/item/11842/1/comtec94-1.pd

    Avaliação de genótipos de mamoeiro (Carica papaya L.) para resistência à Phytophthora palmivora Butler.

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    A fruticultura é um dos segmentos de maior crescimento na agricultura e o mamoeiro (Carica papaya L.) aparece como um dos destaques, principalmente após a recente abertura do mercado norte- americano para a exportação de mamão produzido no país. O mamoeiro pode ser considerado originário do noroeste da América do Sul e América Central, com as principais áreas comerciais localizadas entre as latitudes 23oN e S, apesar de serem encontrados plantios em latitudes de até 32oN e S

    Net cage tambaqui farming: microbiological quality, nutritional value and yield.

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    Tambaqui is traditionally consumed at a commercial size of 1.0 to 3.0 kg However, it is also consumed at between 0.350 to 0.450 kg, this size being referred to as tambaqui curumim (C). The objective of this study was to evaluate the microbiological quality of tambaqui at the commercial size (CS) and to characterize the nutritional value and yield of tambaqui belonging to the two size classes Curumim and CS originating from net cages. The effect of size on the centesimal composition and fish yield was evaluated in a completely randomized design with 12 repetitions while for the microbiological analysis one fish from each net cage was used. C showed protein, ash and moisture contents above those of CS, whereas the ether extract was higher for CS. The yields were 70.04% for C and 65.55% for CS. 50% of the samples showed contamination by Staphylococcus aureus, all values being within the Brazilian?s regulation limits. Salmonella spp. was found in 91.67% of the samples while 75% showed contamination by total coliforms and 8.34% by Escherichia coli. C showed a suitable nutritional value and a better yield in relation to CS. The addition of C to the diet will depend on its acceptance in the markets where its commercialization is not yet established. The microbiological results suggest a tendency of the species to harbor Salmonella spp. on the body surface
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