Results 31 to 40 of about 204 (88)

Amphibia, Anura, Leptodactylidae, Leptodactylus cupreus Caramaschi, Feio and São-Pedro, 2008: distribution extension [PDF]

open access: yesCheck List, 2010
We provide the first record of Leptodactylus cupreus out of its type locality, as well the first record of this species in the State of Espírito Santo, southeastern Brazil.
Juliana Peres   +3 more
doaj   +3 more sources

Molecular phylogenetic analysis sheds light on the diversity and evolutionary history of the Neotropical and African Triplophyllum (Tectariaceae)

open access: yesJournal of Systematics and Evolution, EarlyView.
We used a molecular approach to resolve the evolutionary lineages of Neotropical Triplophyllum, uncovering that current species circumscriptions are hindered by high morphological homoplasy in indument characters. Our results support the recognition of three new species and provide a necessary neotypification for T.
Mauricio Gonçalves Nunes   +6 more
wiley   +1 more source

Analysis of predictors for modification of alumina inclusions in medium carbon steel

open access: yesJournal of Materials Research and Technology, 2021
Currently in steelmaking, “inclusions engineering” has occupied a relevant space in terms of improvements in processes and products. This is because these compounds, depending on the chemical nature, morphology, physical state, size and distribution, can
Raphael Mariano de Souza   +5 more
doaj   +1 more source

A Journey Between Science and the Arts: Templates for the Depiction of the Pineapple (Sixteenth to Eighteenth Centuries)

open access: yesRenaissance Studies, EarlyView.
ABSTRACT Native to America, the pineapple—Ananas comosus (L.) Merr.—delighted the Europeans who came across it. The fruit was mentioned by the voyagers and missionaries who observed and tasted it in the Americas and, from the 1500s onwards, infused reports, chronicles and natural history treatises with colour and flavour.
Teresa Nobre de Carvalho
wiley   +1 more source

Vitex oreadica and V. umbellata (Lamiaceae): two new species from Cerrado and Atlantic forest of Brazil

open access: yesNordic Journal of Botany, Volume 2026, Issue 8, August 2026.
Vitex L. is a pantropical genus of Lamiaceae comprising 209 taxa. Brazil harbors 35 species, representing nearly 50% of the genus richness in the Neotropics, with the Amazon showing the highest richness, followed by the Atlantic Forest and Cerrado domains. Nevertheless, most taxonomic studies of the genus have been conducted in Africa and Asia.
Thaís Teixeira Conegiro   +2 more
wiley   +1 more source

Gestos e toques em tela na compreensão de conceitos sobre bases numéricas: interações com o aplicativo Multibase

open access: yesEducação Matemática Debate, 2023
Este estudo aborda a contribuição do uso de dispositivos móveis com toque em tela que possibilitam um novo olhar sobre o processo epistemológico diante da interação homem-dispositivo.
Késia Alves Penna Ferreira   +2 more
doaj   +1 more source

A temática ferrovias na base de dados Web of Science

open access: yesInformação em Pauta, 2022
As ferrovias, no Brasil, são expressão e tradição e de modernidade, afiguram-se novos espaços de turismo e sociabilidades, acomodando debates sobre aspectos da memória, do silenciamento de poder público, do caminho de prosperidade tecnológica.
Cátia de Sousa Lourenço   +4 more
doaj   +1 more source

Phylogenetics of Clusia sect. Criuva (Clusiaceae) unveils a new species, reinstates an old name and clarifies sectional circumscription

open access: yesTAXON, Volume 75, Issue 4, August 2026.
Abstract Clusia sect. Criuva has long been a taxonomic catch‐all, particularly in the final decades of the 20th century, when misapplications conflated eastern Brazilian taxa with species from the Guiana Shield. We combine herbarium‐based genome skimming, targeted fieldwork, and critical examination of historical literature and types to reassess ...
José E. do Nascimento Jr   +2 more
wiley   +1 more source

Influence of process parameters, hot metal silicon content and slag properties on steel dephosphorization

open access: yesJournal of Materials Research and Technology, 2021
During the process of dephosphorization, the main solid phases formed in slag are dicalcium silicate (2CaO.SiO2), tricalcium silicate (3CaO.SiO2) and tricalcium phosphate (3CaO.P2O5). The last one is the main responsible for phosphorous removal.
Raphael Mariano de Souza   +5 more
doaj   +1 more source

Taxonomic reassessment of Tolpis (Asteraceae) in the Azores and Madeira archipelagos with description of new species

open access: yesTAXON, Volume 75, Issue 4, August 2026.
Abstract Tolpis (Asteraceae) is a recently diversified genus of flowering plants, centered in the Macaronesian region, where it exhibits striking morphological variation and high levels of endemism. In this study, we focus on the archipelagos of Madeira and the Azores (Portugal).
Lurdes Borges Silva   +7 more
wiley   +1 more source

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