21 documents found, page 1 of 3
Disastrous Flash Floods Triggered by Moderate to Minor Rainfall Events. Recent ...
Dinis, Pedro A.; Huvi, João; Cabral Pinto, Marina; Carvalho, JoelThe present work focuses on two recent flash floods in coastal Benguela (Angola), both triggered by moderate rainfall but which had disastrous consequences for local populations (namely 71 deaths in 2015 and 17 in 2019). The research involved a regional survey to establish the effects of these floods combined with a geomorphological and socio-economic analysis of the most affected areas to understand the main f...
Recent Advances on Properties and Utility of Nanomaterials Generated from Indus...
Yadav, Virendra Kumar; Malik, Parth; Khan, Afzal Husain; Pandit, Priti Raj; Hasan, Mohd Abul; Cabral-Pinto, Marina M. S.; Islam, SaifulToday is the era of nanoscience and nanotechnology, which find applications in the field of medicine, electronics, and environmental remediation. Even though nanotechnology is in its emerging phase, it continues to provide solutions to numerous challenges. Nanotechnology and nanoparticles are found to be very effective because of their unique chemical and physical properties and high surface area, but their hig...
Influence of sediment cycling on the rare-earth element geochemistry of fluvial...
Cruz, Armanda; Dinis, Pedro A.; Gomes, António Alberto; Leite, Paula Cristina PintoThe rare-earth element (REE) geochemistry of sedimentary deposits has been used in provenance investigations despite the transformation that this group of elements may suffer during a depositional cycle. In the present investigation, we used the geochemistry and XRD mineralogy of a set of sand and mud fluvial deposits to evaluate the ability of REE parameters in provenance tracing, and the changes in REE geoche...
Estimation of Risk to the Eco-Environment and Human Health of Using Heavy Metal...
Kumar, Amit; Cabral-Pinto, Marina; Kumar, Amit; Kumar, Munesh; Dinis, Pedro A.In the modern era, due to the rapid increase in urbanization and industrialization in the vicinity of the Himalayas, heavy metals contamination in soil has become a key priority for researchers working globally; however, evaluation of the human and ecological risks mainly in hilly areas remains limited. In this study, we analyzed indices like the contamination factor (CF), degree of contamination (DC), enrichme...
Sources of Potentially Toxic Elements in Sediments of the Mussulo Lagoon (Angol...
Dinis, Pedro A.; Armando, Amílcar; Pratas, JoãoThe Mussulo lagoon is a coastal environment located near Luanda, one of the SW African cities that has been growing more rapidly during the last decades. Geochemical, mineralogical, and grain-size data obtained for the lagoon sediments are analyzed together, in order to establish the factors that control the distribution of some potentially toxic elements (PTEs). Sediments from northern location tend to be enri...
Composition of lower cretaceous mudstones of the Algarve basin and implications...
Dinis, Pedro A.; Carvalho, Joel; Callapez, Pedro M.; Mendes, Mario Miguel; Santos, Vanda F.; Manuel Carvalho Fernandes, PauloSeveral compositional features of mudstones are controlled by climate-driven weathering and have been used to approximate palaeoclimatic conditions. Mudstone composition, however, is also influenced by the geology of the source areas and diverse depositional and post-depositional processes. The present geochemical and mineralogical study of the Lower Cretaceous (upper Hauterivian to Aptian) of the Algarve Basin...
Links between Cognitive Status and Trace Element Levels in Hair for an Environm...
Cabral Pinto, Marina M. S.; Marinho-Reis, Paula; Almeida, Agostinho; Pinto, Edgar; Neves, Orquídia; Inácio, Manuela; Gerardo, Bianca; Freitas, SandraIn the present study, trace elements (TE) levels were evaluated in scalp hair along the continuum from healthy subjects (HS) to patients suffering from subjective memory concerns (SMC), and/or mild cognitive impairment (MCI), and those with already installed dementia (DEM) in order to: (i) assess the effects of environmental and lifestyle factors on TE concentrations and (ii) evaluate the analyzed elements as p...
Links between cognitive status and trace element levels in hair for an environm...
Cabral Pinto, Marina M. S.; Marinho Reis, A. Paula; Almeida, Agostinho; Pinto, Edgar; Neves, Orquídia; Inácio, Manuela; Gerardo, Bianca; Freitas, SandraIn the present study, trace elements (TE) levels were evaluated in scalp hair along the continuum from healthy subjects (HS) to patients suffering from subjective memory concerns (SMC), and/or mild cognitive impairment (MCI), and those with already installed dementia (DEM) in order to: (i) assess the effects of environmental and lifestyle factors on TE concentrations and (ii) evaluate the analyzed elements as p...
The transition from Pangea amalgamation to fragmentation: Constraints from detr...
Dinis, Pedro A.; Fernandes, Paulo; Jorge, Raul C. G. S.; Rodrigues, Bruno; Chew, David M.; Tassinari, Colombo G.Detrital zircon U-Pb geochronology data from late Carboniferous to Triassic clastic sedimentary rocks in SW Iberia were used to investigate the regional paleogeography during the transition from Pangea amalgamation to breakup. The major U-Pb zircon age peaks are middle Devonian to Carboniferous (similar to 390-300 Ma), Cambrian Ordovician (similar to 530-440 Ma), Cryogenian-Ediacaran (similar to 750-540 Ma), St...
Moluscos em contextos arqueológicos portugueses: importância e estado da arte
Callapez, Pedro M.; Pimentel, Ricardo; Dinis, Pedro A.O estudo integrado conchas de moluscos presentes em sÃtios arqueológicos constitui um dos principais aspetos da Zooarqueologia. A abordagem metodológica dos contextos de campo e das amostragens recolhidas compreende vários tópicos interligados, incluindo a sistemática e taxonomia, a tafonomia, a análise estatÃstica e biométrica, a paleoecologia de indivÃduos, populações e paleocomunidades e a análi...