Caracterização morfológica de partículas na atmosfera de São José dos Campos SP, utilizando microscopia eletrônica de varredura (MEV)
O estudo trata da caracterização morfológica do aerossol Black Carbon (BC) coletado durante os meses de março a novembro de 2008 num ponto de monitoramento em São José dos Campos-SP. O aerossol BC é um particulado inerte na atmosfera, porém, devido à sua porosidade e natureza adsortiva, atu...
por Portal Padrão
publicado
22/08/2011
2:10 PM
Fisheries and trade of seahorses in Brazil: historical perspective, current trends, and future directions.
Seahorses (Hippocampus spp.) are globally threatened by overexploitation and habitat destruction; they are also regarded as susceptible to heavy exploitation due to some of their life-history traits. From an economic perspective, they are fishes with high monetary value and marketability. Seahorses ...
por Portal Padrão
publicado
22/08/2011
2:09 PM
Os raios e o Programa Espacial Brasileiro
Os raios podem interferir e até comprometer temporariamente o sucesso de qualquer programa espacial. Acidentes com raios no setor aeroespacial, atualmente, são raros, em função das precauções tomadas nos centros de lançamento....
por Portal Padrão
publicado
22/08/2011
2:07 PM
O setor elétrico e as mudanças climáticas
Com as alterações do clima, tempestades e ventanias serão cada vez mais frequentes, o que tornará mais vulneráveis as linhas de transmissão aéreas de energia distribuídas pelo Brasil....
por Portal Padrão
publicado
22/08/2011
2:05 PM
Tropical South America east of the Andes.
The year 2010 began with an El Niño event well stablished in the Pacific Ocean. A rapid transition took place and La Niña was present by July. The La Niña event in 2010 one of the strongest on record. The El Niño-to-La Niña transition was similar to the event occurring in 1998, another very war...
por Portal Padrão
publicado
22/08/2011
2:02 PM
The drought of Amazonia in 2010.
After the drought of 2005, drought struck the Amazon region again in 2010. Drier-than-normal conditions were observed in northwestern, central, and eastern Amazonia during austral summer and the rest of Amazonia until the end of the year. Below-normal rainfall and warm temperatures affected the wate...
por Portal Padrão
publicado
22/08/2011
2:00 PM
Amazon deforestation in Brazil: effects, drivers and challenges.
The concept of global ecosystem services has become a powerful paradigm for understanding the link between ecosystem processes and related human activities, which is expressed by the economic and ecological quantification of the services in regards to sustainable development. The role of tropical fo...
por Portal Padrão
publicado
22/08/2011
1:59 PM
Height above the nearest drainage, a hydrologically relevant new terrain model.
This paper introduces a new terrain model named HAND, and reports on the calibration and validation of landscape classes representing soil environments in Amazonia, which were derived using it. The HAND model normalizes topography according to the local relative heights found along the drainage netw...
por Portal Padrão
publicado
22/08/2011
1:58 PM
Por trás da seca na Amazônia.
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por Portal Padrão
publicado
22/08/2011
1:56 PM
New remains of a gavialoid crocodilian from the late Oligocene-early Miocene of the Pirabas formation, Brazil.
New specimens of gavialoids collected from the Pirabas Formation, Brazil, provide additional information about the evolutionary evolution of Gavialoidea during the late Oligocene-early Miocene. We describe a specimen that has a more gracile symphyseal mandible than any other South American gavialoid...
por Portal Padrão
publicado
22/08/2011
1:55 PM
Estudo comparativo da confiabilidade de estimativas de irradiação solar para o sudeste brasileiro obtidas a partir de dados de satélite e por interpolação/extrapolação de dados de superfície.
O aproveitamento da energia solar vem se tornando viável economicamente e, atualmente, é a que vem apresentando maior crescimento mundial. O conhecimento da disponibilidade de energia solar na superfície é um fator essencial para incentivar novos investimentos em sistemas de geração o de energ...
por Portal Padrão
publicado
22/08/2011
1:53 PM
Enhancing information for solar and wind energy technology deployment in Brazil reference.
Brazils primary energy matrix is based on more than 47% of renewables, and more than 85% of its electricity is generated by hydro power sources. Despite this large fraction of renewable energy resources, less than 0.3% of the national energy supply comes from solar or wind sources. This paper presen...
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