Results 31 to 40 of about 33,873 (194)
Revista Brasileira de Ciência do Solo, 2010 Morphologically differentiated Spodosols usually occur in the Coastal Plain of the South of Bahia and North of Espírito Santo. They are found in profiles known as "muçungas", i.e. sandy soils that accumulate water. In these areas, two kinds of Spodosols,
Aline Pacobahyba de Oliveira +5 more
doaj +1 more source
Novos paradigmas na educacão online com a aprendizagem aberta [PDF]
, 2007 This paper aims to discuss important concepts related to online education which bring a new educational paradigm: open learning through free learning materials and technologies.
Okada, Alexandra
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PLANTS, PEOPLE, PLANET, EarlyView.Brazil's diverse flora is under several threats, with many unique lineages facing extinction, particularly in biodiverse regions like the Cerrado and campo rupestre. This study sheds light on the conservation needs of Cambessedesia (Melastomataceae), an endemic genus with 95% of its species endangered, using an approach to rank and prioritise species ...
Najla Bastos Scheidegger +4 more
wiley +1 more source
Hauts niveaux marins pléistocènes du littoral brésilien [PDF]
, 1988 Sur les parties centrale et sud du littoral brésilien, le haut niveau marin correspondant au dernier interglaciaire a laissé d'importantes traces sous la forme de vastes terrasses sableuses. Les témoins du maximum, daté d'environ 123000 ans B.P.
Flexor, J.M., Martin, Louis, Suguio, K.
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, 2022 A Formação Barreiras, de origem sedimentar, se estende ao longo do litoral brasileiro e tem sido objeto de diversas pesquisas, devido sua extensão e variabilidade espacial, além de se encontrar numa região intensamente povoada e de elevado interesse econômico.
Freire, Lisyanne Vasconcelos +4 more
openaire +1 more source
Balancing tracks and trees: Assessing railroad impact on Brazilian biodiversity
PLANTS, PEOPLE, PLANET, EarlyView.The Brazilian West–East Integration Railway (FIOL) aims to boost the national economy by improving commodity transport; however, it crosses three of Brazil's most biodiverse and fragile regions: the Caatinga, Cerrado and Atlantic Forest. Using digitised plant records and land‐use analyses, our study reveals significant vegetation loss within the ...
Ana Luiza Silva Rocha +3 more
wiley +1 more source
Rice Husk Ash Modified with Vanadium Pentoxide
Orbital: The Electronic Journal of Chemistry, 2017 Rice husk collected in Barreiras City, Bahia, Brazil was converted to rice husk ash (RHA) by acidic or basic leaching, followed by calcination. The resulting RHA was modified with vanadium pentoxide (2, 5, or 10 mass% of V2O5).
Isaias Alves Rodrigues +4 more
doaj +3 more sources
Estudo preliminar das relações entre a geologia e a limnologia da zona bragantina (Pará). [PDF]
, 2015 Made available in DSpace on 2015-01-28T08:47:44Z (GMT). No. of bitstreams: 1 preliminar.pdf: 1307332 bytes, checksum: c34a9cfcae0b661c120e48971b7487e9 (MD5) Previous issue date: 1993-11 ...
SIOLI, H.
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Nanomaterials' Multigenerational Effects by Single and Joint Exposure in Non‐mammalian Models
Environmental Toxicology, EarlyView.ABSTRACT Nanotoxicology has mainly focused on single‐generation studies, leaving multigenerational toxicity underexplored. Having animal welfare recently gained importance, we aimed to provide the state‐of‐the‐art of knowledge about multigenerational effects in non‐mammalian models in the case of nanomaterials (NM) single and joint exposure to other ...
Andy Joel Taipe Huisa +9 more
wiley +1 more source
Evolution of the Post-Barreiras Sediments in the coastal zone of São Luís Basin, Maranhão, Brazil [PDF]
Boletim do Museu Paraense Emílio Goeldi. Ciências Naturais, 2013 The Post-Barreiras Sediments have been poorly studied,despite their interest for reconstituting sea-level fluctuations and the tectonic history in the Quaternary.
Dilce de Fátima Rossetti. +2 more
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