Results 31 to 40 of about 109 (86)

Application of Principal Component Analysis and Probabilistic Neural Networks in Ferralsols Recovery Evaluation Through Planting of Mabea Fistulifera and Eucalyptus Urograndis

open access: yesLand Degradation &Development, Volume 37, Issue 13, Page 9021-9037, 15 August 2026.
ABSTRACT This study presents an innovative assessment model for analyzing the evolution of degraded soils subjected to different reclamation strategies. The proposal combines statistical and artificial intelligence tools to jointly integrate multiple physical and chemical soil properties, allowing for a more synthetic view of the processes.
Melissa Alexandre Santos   +7 more
wiley   +1 more source

matematização da pedagogia:

open access: yesRevista Diálogo Educacional, 2022
Este artigo é fruto da pesquisa realizada para a tese de doutorado intitulada “Avaliação da matemática escolar: contribuições da Pedagogia da Escola Nova”.
Waléria Adriana Gonçalez Cecílio
doaj   +1 more source

Uso de crack, adolescentes e masculinidades no Brasil contemporaneo: uma leitura a partir da cidade de Ponta Grossa, estado do Paraná, Brasil [PDF]

open access: yesEstudios Socioterritoriales: Revista de Geografía, 2017
O objetivo do presente artigo é compreender como se institui a vivência cotidiana de adolescentes do sexo masculino usuários de crack nas espacialidades da Vila e da Casa, na periferia de Ponta Grossa-Paraná. Foram realizadas entrevistas em profundidade,
Heder Leandro Rocha
doaj  

Micro‐CT informed cranial anatomy of the early rhynchosaur Howesia browni, with implications for rhynchosaur skull evolution

open access: yesPapers in Palaeontology, Volume 12, Issue 4, July/August 2026.
Abstract Rhynchosaurs are unusual archosauromorph reptiles that lived between the Induan and early Norian (Early to early Late Triassic). They are characterized by their stocky build and broad skull with a beak‐like premaxilla. This rather charismatic configuration is most clearly expressed in Late Triassic hyperodapedontine rhynchosaurids.
Stephan N. F. Spiekman   +6 more
wiley   +1 more source

From Tradition to Innovation: The Nutritional, Bioactive, and Sustainable Potential of Portulaca oleracea L.

open access: yesJournal of Food Science, Volume 91, Issue 7, July 2026.
ABSTRACT Portulaca oleracea L., or purslane, is a resilient leafy vegetable increasingly investigated for its nutritional composition, ecological adaptability, and diverse bioactive compounds. Traditionally consumed in Mediterranean, Asian, African, and Latin American cuisines, it is now recognized as a nonconventional food plant (NCFP) relevant to ...
Jhony Silva Ramos   +10 more
wiley   +1 more source

Amido no megagametófito de Araucaria angustifolia (Bert.) O. Ktze: degradação durante a germinação e desenvolvimento do esporófito Starchy reserve of the megagametophyte of Araucaria angustifolia (Bert.) O. Ktze: mobilization during germination and on the developing sporophyte

open access: yesActa Botânica Brasílica, 1994
O pinheiro brasileiro possui um diásporo de grandes dimensões, o pinhão, rico em reservas amiláceas. A mobilização dessas reservas pelo embrião foi quantificada em secções transversais do megagametófito, em cinco estágios de desenvolvimento da plântula ...
Rosa Maris Rosado   +3 more
doaj   +1 more source

Integrative taxonomy reveals two new species of whiptail catfishes Loricaria (Siluriformes: Loricariidae) from northeastern Brazil

open access: yesJournal of Fish Biology, Volume 108, Issue 6, Page 2080-2097, June 2026.
Abstract Two new species of whiptail catfish, Loricaria (Siluriformes: Loricariidae), were discovered in the Munim and Itapecuru river basins, Maranhão State, northeastern Brazil, through an integrative taxonomic approach combining morphology and mitochondrial DNA.
Ananda. C. Serejo‐Saraiva   +4 more
wiley   +1 more source

QUALIDADE FISIOLÓGICA DE SEMENTES DE Araucaria angustifolia (Bertol.) Kuntze SUBMETIDAS A DIFERENTES CONDIÇÕES DE ARMAZENAMENTO E A ESCARIFICAÇÃO [PDF]

open access: yesCiência Florestal, 2006
As sementes de Araucaria angustifolia (Bertol.) Kuntze (pinheiro-do-Paraná) são recalcitrantes e, portanto, perdem rapidamente a viabilidade após a colheita, o que dificulta a sua utilização na produção de mudas. Este trabalho teve como objetivos avaliar
Álvaro Valente Caçola   +3 more
doaj  

BRACATINGA (MIMOSA SCABRELLA), EUCALlPTO (EUCALYPTUS VIMINALIS) E PINUS (PINUS TAEOA) NA RECUPERAÇÃO DA BIODIVERSIDADE, A NÍVEL MICROBIOLÓGICO, DE SOLOS DEGRADADOS

open access: yesRevista do Instituto Florestal, 1992
Foram estudados comparativamente solos sob mata nativa original, sob reflorestamentos, com bracatinga (Mimosa scabrella), com eucalipto (Euca/yptus viminalis) e com pinheiro (Pinus taeda) e desnudos.
Lucila M. de A. Maschio   +3 more
doaj   +1 more source

Moderate Fire Temperatures Affect the Structure of Clayey Oxisol Aggregates

open access: yesLand Degradation &Development, Volume 37, Issue 8, Page 3169-3181, 15 May 2026.
ABSTRACT Wildfires have become increasingly frequent and intense worldwide, raising concerns about their impacts on soil systems. However, the thermal responses of clay‐rich Oxisols, dominated by Fe and Al oxides, remain poorly understood. In this study, samples from the 0 to 5 cm layer of six Oxisols were subjected to controlled heating at ...
Yasmmin Tadeu Costa   +5 more
wiley   +1 more source

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