A5077497752- Geology and Paleoclimatology Research
- Geological and Geochemical Analysis
- Geological and Geophysical Studies Worldwide
- Geochemistry and Elemental Analysis
- Geological formations and processes
- Geochemistry and Geologic Mapping
- Heavy metals in environment
- Radioactivity and Radon Measurements
- earthquake and tectonic studies
- Geography and Environmental Studies
- Aeolian processes and effects
- Plant Diversity and Evolution
- Soil erosion and sediment transport
- Coastal and Marine Dynamics
- Paleontology and Stratigraphy of Fossils
- Fire effects on ecosystems
- Fish biology, ecology, and behavior
- Fern and Epiphyte Biology
- Geological and Geophysical Studies
- Heavy Metal Exposure and Toxicity
- Archaeological and Geological Studies
- Plant and Fungal Species Descriptions
- Maritime and Coastal Archaeology
- Building materials and conservation
- Hydrology and Watershed Management Studies
University of Coimbra
2015-2024
MARE - Centro de Ciências do Mar e do Ambiente
2024
Marine Research Centre
2018
Terra
2012-2015
Institute of Marine Research
2011-2013
In the modern era, due to rapid increase in urbanization and industrialization vicinity of Himalayas, heavy metals contamination soil has become a key priority for researchers working globally; however, evaluation human ecological risks mainly hilly areas remains limited. this study, we analyzed indices like factor (CF), degree (DC), enrichment (EF), geochemical index (Igeo), pollution risk (PERI), load (PLI), along with cancer (CR) hazard (HI), ascertain eco-environmental using datasets...
In the present study, trace elements (TE) levels were evaluated in scalp hair along continuum from healthy subjects (HS) to patients suffering subjective memory concerns (SMC), and/or mild cognitive impairment (MCI), and those with already installed dementia (DEM) order to: (i) assess effects of environmental lifestyle factors on TE concentrations (ii) evaluate analyzed as possible diagnostic biomarkers for disease. The study involved 79 mainly permanent residents, >55 years old, city...
Abstract This study focuses on the causes, modalities and obstacles of sediment transfer in longest cell littoral sand drift documented Earth so far. Sand derived from Orange River is dragged by swell waves persistent southerly winds to accumulate four successive dunefields coastal Namibia Angola. All are terminated river valleys, where aeolian flushed back ocean; yet transport continues at sea, tracing an 1800 km long submarine highway. would extend northward beyond Congo if shelf did not...
Abstract Geochemical mapping is frequently used to identify the regions of Planet with critical chemical elements and their natural or anthropogenic sources. In order understand elements' geochemistry area's potentially harmful associations, high‐resolution maps elements, physico‐chemical parameters, a noncarcinogenic hazard index, potential ecological risk index were modelled soil samples collected in Himalaya region. It first environmental geochemical atlas for this was found that...
Elemental geochemistry, Nd isotopes, clay minerals, and U-Pb zircon ages integrated by petrographic heavy-mineral data offer a multiproxy panorama of mud sand composition across the Zambezi sediment-routing system. Detrital geochronology highlights four major episodes crustal growth in southern Africa: Irumide predominate over Pan-African, Eburnean, Neoarchean ages. Smectite, dominant generated from Karoo basalts or equatorial/winter-dry climate Mozambican lowlands, prevails illite...
Today is the era of nanoscience and nanotechnology, which find applications in field medicine, electronics, environmental remediation. Even though nanotechnology its emerging phase, it continues to provide solutions numerous challenges. Nanotechnology nanoparticles are found be very effective because their unique chemical physical properties high surface area, but cost one major hurdles wider application. So, synthesis nanomaterials, especially 2D nanomaterials from industrial, agricultural,...
Huge amounts of mineral dust are produced in northern Africa, representing the largest source aerosols worldwide.Transatlantic transport is known to fertilize soils as far Amazon Basin.Yet, influence Saharan on chemical weathering fluxes and associated nutrient release West Africa remains largely overlooked.To address this issue, we analysed clay fractions (<2 µm) river sediments (n = 37) from across Niger River basin -the system -using neodymium hafnium isotope compositions proxies for...
Coastal dune fields and dune-body associated lakes were studied through sedimentological, malacological palynological analyses. Lake deposits palaeosoil horizons gave new information about phases of aeolian activity building, coastline sea level, vegetation history cultural impact. After a period intense (Late Pleistocene) that limited soil-forming processes, wet field, recorded by podzolized sands interdune wetland deposits, was present in the region. Around 5000 to 4000 yr BP level reached...
Abstract. This study describes and interprets the evolution of grain-size distribution sediment yields generated in an experimental soil flume subjected to downstream upstream moving rain storms. Results laboratory experiments show that storms cause more loss than do The pattern time during a runoff event exhibits clear dependence on direction storm movement. A strong relationship between overland flow discharge mean size is found. Nevertheless, sediments transported rising limb hydrograph...
Quaternary raised marine terraces containing the remains of diverse, shallow water invertebrate faunas are widespread across coast Angola. These deposits and have not been studied in same detail as contemporaneous features northwest southernmost Africa. We analyzed fossil assemblages sedimentology two closely spaced middle Pleistocene terrace Baía das Pipas, southwest This revealed 46 gastropod 29 bivalve species, along with scleractinian corals, encrusting bryozoans, polychaete tubes,...