Results 101 to 110 of about 24,387 (226)

Correspondência de Joaquim de Vasconcelos para Leite de Vasconcelos

open access: yes, 2023
«As cartas que aqui publicamos dão-nos conta, em primeiro lugar, de alguns momentos do percurso de Joaquim de Vasconcelos (1849-1936). A primeira delas data de 1882, pouco antes de o portuense, após ter perdido o grosso da sua fortuna familiar, ingressar na carreira docente no Liceu do Porto, e a última de 1922, quando Vasconcelos é professor da Escola
openaire   +1 more source

Confirming the impact origin of the São Miguel do Tapuio structure, northeastern Brazil

open access: yesMeteoritics &Planetary Science, EarlyView.
Abstract The São Miguel do Tapuio structure (SMT) is a remarkable, nearcircular feature of about 21 km diameter, centered at 5°37.6′ S, 41°23.3′ W in Piauí state, northeastern Brazil. The structure is located within the sedimentary strata of the Paleozoic–Mesozoic Parnaíba Basin and predominantly comprises sandstones of the Devonian Pimenteiras and ...
Alvaro Penteado Crósta   +9 more
wiley   +1 more source

Un estudio sobre el desarrollo del pensamiento aleatorio usando recursos educativos abiertos

open access: yesApertura, 2015
Este estudio presenta los resultados de un proyecto de investigación sobre la implementación de la enseñanza probabilística con recursos educativos abiertos (REA), diseñados en la plataforma Edmodo, y que está dirigido a estudiantes de tercer grado de ...
Yenny Patricia Pinzón Triana   +2 more
doaj  

Geophysical investigation of the Santa Marta impact structure—Piauí State, Brazil

open access: yesMeteoritics &Planetary Science, EarlyView.
Abstract The Santa Marta impact structure in northeastern Brazil, recognized as a partially preserved complex crater, was investigated through an integrated geophysical study employing magnetotelluric (MT) and gravity methods. Our research provides constraints on the crater's subsurface architecture.
Elienara Vasconcelos   +5 more
wiley   +1 more source

Araguainha Dome, Brazil: A polygonal impact structure due to a complex pre‐impact regional structural framework

open access: yesMeteoritics &Planetary Science, EarlyView.
Abstract We investigated the structural framework of the north–northwestern Paraná Basin in Brazil to test whether the pre‐impact structures in this region may have had any influence on the first‐order formation and morphostructure of the Araguainha impact structure (AIS).
Renato B. Bernardes   +5 more
wiley   +1 more source

José Vasconcelos y su paso por el Uruguay de los años veinte José Vasconcelos and his Visit to Uruguay in the 1920s

open access: yesSecuencia, 2011
El texto trata de la visita de José Vasconcelos a Uruguay en una escala de su viaje a cuatro países del Cono Sur sudamericano (Argentina, Brasil, Chile y Uruguay), que daría origen a su célebre libro La raza cósmica.
Gerardo Caetano Hargain
doaj  

Unveiling contrasting iron efficiency strategies in common bean (Phaseolus vulgaris L.) genotypes under iron deficiency

open access: yesPlant Biology, EarlyView.
Common bean genotypes differ in their iron acquisition through distinct Strategy I responses and root exudation patterns. Abstract Iron (Fe) deficiency in food crops, particularly on calcareous soils, limits productivity and human nutrition. This study investigated two common bean (Phaseolus vulgaris) genotypes, Guaymí (high Fe‐accumulating, HI) and ...
F. X. Rucamumihigo   +4 more
wiley   +1 more source

From senescence and inflammaging to systemic comorbidities: Drivers of aging‐associated periodontitis

open access: yesPeriodontology 2000, EarlyView.
Abstract Background Aging is accompanied by a chronic low‐grade inflammatory process, known as inflammaging, as well as immunosenescence, an age‐related decline and dysregulation of immune function, and cellular senescence, a process in which cells enter a state of irreversible growth arrest while actively releasing pro‐inflammatory factors.
James Cheng   +4 more
wiley   +1 more source

Return of the ants: investigating temporal and spatial patterns of ant colonization in unsealed schoolyards

open access: yesRestoration Ecology, EarlyView.
Abstract Introduction Urban soil unsealing, the removal of impervious surface layers, is increasingly promoted as a habitat restoration strategy to enhance ecosystem resilience in cities. Yet, its potential to support soil biodiversity from the onset remains underexplored.
Robin Chevrel   +4 more
wiley   +1 more source

Chain Reactions: How Businesses Plan to Respond to the EU Deforestation Regulation in Brazil, the Congo Basin, and Europe

open access: yesRegulation &Governance, EarlyView.
ABSTRACT The 2023 European Union Regulation on Deforestation‐free Products (EUDR) is a transnational regulation aimed at addressing forest loss along the value chains of forest‐risk commodities. Grounding our analysis in new institutional theory with distinct behavioral drivers explaining actor behavior, and using qualitative methods, we draw on the ...
Mathias Cramm   +11 more
wiley   +1 more source

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