Results 51 to 60 of about 12,688 (202)
Geografia (Londrina), 2009 Este trabalho apresenta o estudo da dinâmica e morfologia de canais de confluência tendo como exemplo dois grandes rios tropicais o rio Paraná e o rio Paranapanema.O estudo propõe uma metodologia, ainda que semi-quantitativa, bastante atraente uma vez ...
Renato José Paes +3 more
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Nordic Journal of Botany, EarlyView.Sinningia pampeana is a new rupicolous species from the rocky outcrops of the Pampa biome in southern Brazil and Uruguay. Morphological analyses based on herbarium material, field observations, and detailed illustrations support its recognition as a distinct species from Sinningia sellovii.
Gabriel Emiliano Ferreira +4 more
wiley +1 more source
El río Paraná: de pulmón comercial a fábrica de energía (1870-1990)
Historia Ambiental Latinoamericana y Caribeña, 2016 Este artículo examina las transformaciones experimentadas por el Río Paraná en la región del Alto Paraná fronterizo entre Brasil y Paraguay entre 1870 y 1990.
Carlos Gómez Florentin
doaj +2 more sources
Brazilian Journal of BiologyFive new species of the Neotropical characiform genus Astyanax Baird & Girard are described from Rio Iguaçu at the border of Paraná and Santa Catarina states, southeastern Brazil and Astyanax gymnogenis Eigenmann is redescribed.
JC. Garavello, FAA Sampaio
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Estudo petrográfico da tecnologia cerâmica Guarani no extremo sul de sua distribuição
Revista de Arqueologia, 2009 Este trabalho constitui o primeiro estudo comparativo de cortes finos de cerâmica arqueológica procedente de diferentes sítios Guarani da região do rio Paraná inferior, iniciando com ele uma base cumulativa de dados.
Maricel Pérez +4 more
doaj +1 more source
Vacuum Infusion as a Processing Route for Transparent Wood Laminates
Polymer Composites, EarlyView.Schematic representation of the fabrication route for transparent wood laminates, including wood veneer delignification, epoxy resin impregnation by vacuum infusion processing, and the final TW‐1 transparent wood laminate. ABSTRACT Transparent wood (TW) has attracted increasing attention as a bio‐based material for daylighting and building‐envelope ...
Letícia Zimermann Pires +7 more
wiley +1 more source
Neotropical Ichthyology, 2011 This study presents chromosomal data of Megalonema platanum from rio Tibagi, Paraná, Brazil and from rio Paraná, Argentina. The diploid number was equal 54 with karyotype composition of 24m+16sm+2st+12a in both populations.
Rafael Augusto de Carvalho +5 more
doaj
O uso das terras no sul do Brasil: uma análise a partir de indicadores de localização
Revista de Economia e Sociologia Rural, 2006 Esse artigo analisa o uso das terras no Paraná, Santa Catarina e Rio Grande do Sul, no período de 1975 a 1995, a partir da análise regional. Foram utilizados indicadores de localização e especialização tendo como variável a área em hectares ocupadas nos ...
Jandir Ferrera de Lima +7 more
doaj +1 more source
The most threatened plants receive the least scientific attention
PLANTS, PEOPLE, PLANET, EarlyView.Plants sustain all life, providing the energetic and structural basis of ecosystems, but they face a growing risk of extinction. Reversing this decline requires an understanding of how scientific knowledge is distributed among species, and identification of the biases and gaps that hinder effective responses to the threats they face. However, we reveal
Renon S. Andrade +3 more
wiley +1 more source
Neotropical IchthyologyThis study presents chromosomal data of Megalonema platanum from rio Tibagi, Paraná, Brazil and from rio Paraná, Argentina. The diploid number was equal 54 with karyotype composition of 24m+16sm+2st+12a in both populations.
Rafael Augusto de Carvalho +5 more
doaj +1 more source