76 documents found, page 1 of 8
Mid-Neoproterozoic extensional tectonics in the Larsemann Hills, East Antarctic...
Chatterjee, Sandro; Dev, J. Amal; Debnath, Aishi; Ghosh, Anuj; Dey, Soham; Mukherjee, Anik; Arora, Devsamridhi; Tomson, Joseph KallukalamABSTRACT: The supercontinents Rodinia and Gondwana are believed to have assembled through orogenic events at similar to 1000 Ma and similar to 550 Ma, respectively. The Larsemann Hills, part of the extended Rayner Complex of East Antarctica, is a Neoproterozoic granulite terrane that was a part of both supercontinents. The tectonic evolution of the terrane in the Rodinia to Gondwana interval remains uncertain. ...
El Complejo Calco-Alcalino de la Serra da Neve (SW Angola): trabajos en curso [...
Prazeres, Cátia; Batista, Maria Joao; Lopes, R.; Barros, B.; Ferreira da Costa, P.; Labaredas, José; Guimarães, Fernanda; Rodrigues, José FelicianoRESUMEN: El Complejo Calco-Alcalino de la Serra da Neve (CACSN) constituye un conjunto de estructuras alcalinas volcánicas, subvolcánicas y plutónicas emplazadas en una tendencia general ONO-ESE a NOSE (Pereira y Moreira, 1978; Lopes y Caessa, 2021). Fue remapeado a escala 1:100.000 para la cartografía geológica del proyecto PLANAGEO y posteriormente fue una de las áreas seleccionadas para realizar exploración ...
O projecto EXCITE
Caldeira, Rita; Gonçalves, M. A.; Guimarães, Fernanda; Rodrigues, P. C. R.; Walter, S.; Guedes, A.; ter Maat, G.ABSTRACT: The EXCITE (Electron and X-ray microscopy Community for structural and chemical Imaging Techniques for Earth materials) project, unites leading European facilities for electron and X-ray microscopy of earth materials. This project is mainly focused in providing access to existing high-end facilities in the field of earth and material sciences and, by this, enabling knowledge and experience exchanging ...
Differential Quercus spp pollen-particulate matter interaction is dependent on ...
Galveias, Ana; Ribeiro, Helena; Guimarães, Fernanda; Costa, Maria João; Rodrigues, Pedro; R Costa, Ana; Abreu, Ilda; M Antunes, CéliaParticulate matter (PM) and pollen interaction, either airborne or at the respiratory mucosa needs further clarification, as allergic reaction intensification can be related to the PM physical characteristics and toxicity. This study aimed to investigate the physical-chemical properties of PM that can adhere to the pollen wall during its transport or inhalation, using Quercus spp. as a model, in three Portugues...
Psamomatoid juvenile ossifying fibroma: case report
Guimarães, Fernanda; Griza, Geraldo Luiz; Vidor, Niviane Dorigan; Garbin Júnior, Eleonor Álvaro; Ernica, Natasha Magro; Conci, Ricardo AugustoFibro-osseous lesions are a group of lesions characterized by the replacement of normal bone with fibrous animal tissue and mineralized tissue. Among these lesions is that the juvenile ossifying fibroma, a rare benign fibro-osseous tumor, comprising approximately 2% of oral tumors affecting children and adolescents. consistent with its histopathological features, it's subdivided into psammomatoid juvenile ossif...
Exhumation of an anatectic complex by channel flow and extrusion tectonics: str...
M. Bento dos Santos, Telmo; Rodrigues, José Feliciano; Castro, Paulo; Cotrim, Beatriz; Pereira, Inês; Ferreira, Joana; Pinto De Meireles, Carlos AugustoAbstract: Structural and metamorphic analyses of the Porto–Viseu Metamorphic Belt (PVMB), an anatectic complex located in the Central-Iberian Zone (CIZ), Iberian Variscan Massif, constrain the kinematic features of the polyphase Variscan deformation, as well as the boundary conditions associated with the exhumation and emplacement of the belt onto the CIZ’s lower-grade metasediments. A sharp metamorphic contras...
Alluvial nodular monazite in Monfortinho (Idanha-a-Nova, Portugal): Regional di...
Salgueiro, Rute; Inverno, Carlos; de Oliveira, Daniel Pipa Soares; Guimarães, Fernanda; Lencastre, José; Rosa, DiogoABSTRACT: This work constitutes a contribution to the knowledge on the occurrence of nodular monazite in the Monfortinho (Idanha-a-Nova) alluviums and its genesis. A new edition of the alluvial nodular monazite regional distribution map is presented, underlining its wide occurrence and preferential concentration in the north-western and central zones of this region. The assessment of the geological and environm...
Recursos locais para aplicações multifuncionais de captação de energia com base...
Neves, Filipe; Esperto, Luís; Figueira, Isabel; Mascarenhas, João; Correia, J.B.; Joyce, A; Guimarães, Fernanda; Salgueiro, Rute; Silva, TeresaRESUMO: Este trabalho descreve as principais linhas de investigação que estão em curso no âmbito do projeto LocalEnergy (http://localenergy.lneg.pt). LocalEnergy é um projeto multidisciplinar de Investigação, Desenvolvimento e Inovação (I&D&I), envolvendo atividades no domínio da ciência dos materiais, da geologia e das energias renováveis. Essas atividades estão orientadas para a indústria e assentam numa abor...
Desenvolvimento de “jogos abertos” para a divulgação científica na Educação Básica
Leles, Daniela; Guimarães, FernandaConsidera-se divulgação científica ações que permitem a compreensão das práticas científicas pela população. A articulação dessa prática com a educação formal é um meio de integrar ciência e educação, formando saberes complexos e significativos. O engajamento de profissionais de diferentes áreas nesse tipo de ação necessita ser incentivada para garantir a qualidade da comunicação e da informação divulgada. Devi...
Release, Migration, Sorption, and (Re)Precipitation of U during Peraluminous Gr...
Pinto, Marina M. S. Cabral; Silva, Maria M. V. G.; Neiva, Ana M. R.; Guimarães, Fernanda; Silva, PauloIn this work, in order to study the release, migration, sorption, and (re)precipitation of uranium (U) during alteration under oxidizing conditions, we carried out a systematic study using scanning electron microscopy, X-ray maps, and electron microprobe analyses on uranium minerals—such as uraninite, coffinite, saleeite, meta-saleeite, and thorite—and U-bearing minerals—such as xenotime, monazite, apatite, and...