MHD turbulence-Star Formation Connection: from pc to kpc scales

The transport of magnetic flux to outside of collapsing molecular clouds is a required step to allow the formation of stars. Although ambipolar diffusion is often regarded as a key mechanism for that, it has been recently argued that it may not be efficient enough. In this review, we discuss the role that MHD turbulence plays in the transport of magnetic flux in star forming flows. In particular, based on recent advances in the theory of fast magnetic reconnection in turbulent flows, we will show results of three-dimensional numerical simulations that indicate that the diffusion of magnetic field induced by turbulent reconnection can be a very efficient mechanism, especially in the early stages of cloud collapse and star formation. To conclude, we will also briefly discuss the turbulence-star formation connection and feedback in different astrophysical environments: from galactic to cluster of galaxy scales.Comment: 6 pages, 5 figures, 274 IAU Symposium: Advances in Plasma Astrophysic

Aplicação do diagnóstico rápido participativo para avaliação da percepção ambiental dos empregados da Embrapa Agroindústria de Alimentos.

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Recuperação de áreas degradadas com plantio de espécies florestais em unidades de agricultura familiar na Amazônia Oriental.

Título em inglês: Reclamation of degraded areas planting forest trees in agriculture family units in the Eastern Amazon of Brazil

Quality of tropical white wines from different varieties produced in the São Francisco Valley, Brazil.

The vitiviniculture in the São Francisco Valley is recent and in full development activity. The production of grapes for fresh consumption was introduced in São Francisco Valley region in the 50s and the production of grapes for wines is a more recent activity with the first activities in the middle 80s with a great increase only in 2000. Nowadays the São Francisco Valley is the second largest producing region of fine wines using Vitis vinifera varieties in Brazil. The wine industry in the São Francisco Valley has unique soil and climate characteristics, differing from other traditional areas. It is located in semi-arid tropical climate zone, with an annual average temperature of 26ºC, high levels of solar radiation and maximum annual rainfall of approximately 500 mm. These factors, combined with the lack of winter and the availability of water for irrigation, allow the vines to have a continuous cycle, with production of grapes and wines throughout the year and up to three harvests per yea

Precisão do índice de vegetação da diferença normalizada para identificação de lesões de crestamento bacteriano comum.

Este trabalho teve por objetivo avaliar a precisão do índice de vegetação NDVI (Normalized Difference Vegetation Index) para a detecção de lesões causadas por Xanthomonas axonopodis pv. phaseoli no feijoeiro comum (Phaseolus vulgaris L.).Evento online

Quality of tropical red wines from different varieties in the São Francisco Valley, Brazil.

The vitiviniculture at the São Francisco Valley, Brazil, is a recent and under development activity. It is located in the semi-arid of the northeast of Brazil, with socio-economic importance for the region, since the grape chain generates more than 80,000 direct and indirect jobs. The particular soil and climate conditions of the region, associated with the high incidence of radiation, winter absence and availability of water for irrigation, enable the production of grapes and wines of Vitis vinifera L. throughout the year, with two to three harvests per year, depending on the cycle of each variety

Recomendação de variedades de aipim para o estado de Sergipe.

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