Wetness
Mostrando 13-24 de 72 artigos, teses e dissertações.
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13. Favorable conditions for Xanthomonas axonopodis infection in Eucalyptus spp.
Currently, Xanthomonas axonopodis is one of the main foliar pathogens for Eucalyptus spp. in Brazil. It induces leaf blight and defoliation of seedlings in the nursery and young plants in the field. However, little is known about thefavorable conditions for infection. The establishment and development of bacterial leaf blight caused by X. axonopodis in eucal
Trop. plant pathol.. Publicado em: 2014-12
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14. Doenças quiescentes em goiabas: quantificação e controle pós-colheita / Quiescent diseases in guava: quantification and post-harvest control
Post-harvest diseases in guavas may represent damages from 20 to 40%. Environmental conditions and disease management, before or after harvesting, are among their major causes. Standards proposed by the Integrated Production Fruit (IPF) ensure fruit quality and sustainable production with rational use of agrochemicals. Using the white-fleshed variety Kumagai
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 06/11/2012
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15. Delimitation of kala-azar risk areas in the district of Vaishali in Bihar (India) using a geo-environmental approach
Remote sensing and geographical information technologies were used to discriminate areas of high and low risk for contracting kala-azar or visceral leishmaniasis. Satellite data were digitally processed to generate maps of land cover and spectral indices, such as the normalised difference vegetation index and wetness index. To map estimated vector abundance
Memórias do Instituto Oswaldo Cruz. Publicado em: 2012-08
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16. Índices para a representação da paisagem como apoio para levantamento pedológico em ambiente de geoprocessamento
O mapeamento de solos tem ganhado destaque dentro da comunidade científica, pois, à medida em que a preocupação com o meio ambiente aumenta, ocorre a necessidade de se entender cada vez mais a distribuição dos solos na paisagem, tal como seu potencial e limitações de uso. Desta forma, o principal objetivo do trabalho foi aplicar índices de represent
Revista Brasileira de Engenharia Agrícola e Ambiental. Publicado em: 2012-04
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17. Simulations of tropical rainforest albedo: is canopy wetness important?
A informação precisa do albedo superficial é essencial para a modelagem climática, especialmente para regiões, tais como a Amazônia, onde a resposta da circulação atmosférica regional às mudanças do albedo superficial é forte. Estudos preliminares têm indicado que os modelos ainda não são capazes de reproduzir corretamente os detalhes da varia
Anais da Academia Brasileira de Ciências. Publicado em: 21/10/2011
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18. Photocatalytic discoloration of reactive blue 5g dye in the presence of mixed oxides and with the addition of iron and silver
This work reports the use of cerium - titania - alumina - based systems modified with Ag and Fe by the wetness impregnation method for the discoloration of blue 5G dye. The techniques employed to characterize the photocatalysts were: temperature - programmed reduction (TPR), X - ray diffraction (XRD), specific surface area, average pore volume, and average p
Brazilian Journal of Chemical Engineering. Publicado em: 2011-09
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19. Produção de monoéster via etanólise por hidrotalcitas termoativadas : síntese e caracterização
Among biofuels of the 1st generation, biodiesel stands out for its equivalent features to those of mineral diesel, however less polluting. It can be obtained by transesterification of triglyceride fats or vegetable oils by (m)ethanolysis. Aiming at improving the chemical process, different types of catalysis have been studied: i) homogeneous (acid e.g. H2SO4
Publicado em: 2011
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20. Estimativa da disponiblidade de forragem do bioma Campos Sulinos a partir de dados radiométricos orbitais: parametrização do submodelo espectral / Forecast the available forage of natural pastures of Campos Sulinos biome using satellite spectral data: parameterization for the spectral submodel
Este trabalho apresenta a parametrização do submodelo espectral do modelo JONG, um modelo agrometeorológico-espectral para a previsão da disponibilidade de forragem das pastagens naturais do bioma Campos Sulinos. A parametrização foi feita testando-se a capacidade de diferentes variáveis espectrais obtidas a partir de imagens do sensor ETM+/Landsat 7
Publicado em: 2010
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21. Mal-das-folhas da seringueira: dinâmica de inóculo do patógeno, progresso e danos, em três condições topográficas / South American leaf blight of rubber tree: dynamics of pathogen inoculum, progress and losses, in three topographical conditions
Brazil currently accounts for only 1.15% of the world production of natural rubber. A limiting factor on the rubber production in Brazil is the South American Leaf Blight (SALB), caused by Microcyclus ulei. Considering the lack on the knowledge on SALB, between June 2005 and December 2008 we studied the: i. dynamics of ascospores and conidia of the pathogen,
Publicado em: 2010
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22. Enhancing cobalt dispersion in supported Fischer-Tropsch catalysts via controlled decomposition of cobalt precursors
Fischer-Tropsch synthesis is a part of Gas-to Liquids (GTL), Biomass-to-Liquids (BTL) and Coal to Liquids (CTL) technologies, which produce alternatives clean fuels from natural gas, biomass and coal. The catalytic performance of cobalt catalysts in Fischer-Tropsch synthesis strongly depends on the size of cobalt particles in nanoscale range (6-30 nm). Cobal
Brazilian Journal of Physics. Publicado em: 2009-04
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23. Geração de H2 a partir do etanol : efeito da adição de terras raras (La2O3, CeO2) e Pt nas propriedades atalíticas de Co/Al2O3 para reforma do etanol
Ni or Co catalysts supported on Al2O3, La2O3-Al2O3 and CeO2-Al2O3 were prepared by impregnation of Al2O3 with an aqueous solution of lanthanum nitrate or ceria, followed by a calcination and incipient wetness impregnation with an aqueous solution of nickel or cobalt nitrate and promoted with Ag or Pt. The catalysts were characterized by temperature-programme
Publicado em: 2009
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24. Heat and mass transfer in two-phase flow around airfoils with aeronautical anti-ice systems. / Transferência de calor e massa no escoamento bifásico em torno de aerofólios equipados com sistemas de antigelo aeronáuticos.
It is required to prevent ice accretion on wings and horizontal stabilizers because it may cause aerodynamic performance degradation, weight increase, flight control difficulties and, in critical cases, may lead to operational safety margins reduction. When aircraft flies through clouds containnig supercooled water droplets, which are in metastable equilibri
Publicado em: 2009