Hydration status and water sources in free-living physically active elderly

[resumo][abstract

Elemental mapping of Portuguese ceramic pieces with a full-field XRF scanner based on a 2D-THCOBRA detector

UID/FIS/04559/2020In this work, we present a novel application of the full-field energy-dispersive X-ray fluorescence (EDXRF) imaging system based on a MicroPattern Gaseous Detector (2D-THCOBRA) in the cultural heritage field. The detector has an intrinsic imaging capability with spatial resolution of 400μmFWHM, and is energy sensitive, presenting an energy resolution of approximately 1keVFWHM at 5.9keV. The full-field XRF scanner based on the 2D-THCOBRA detector allows mapping the distribution of elements in large area samples with high detection efficiency (75 % at 5.9keV), being a very promising choice for elemental mapping analysis of large area cultural heritage samples. In this work, we have demonstrated the imaging capabilities of the full-field XRF scanner and used it to assess the restoration of a Portuguese faience piece.publishersversionpublishe

Notas sobre do maciço de Sines: uma reinterpretação de dados geofísicos para avaliação do potencial armazenamento de CO2 por carbonatação mineral

ABSTRACT: The InCarbon project aims to evaluate the potential for storage of captured CO2 using in-situ mineral carbonation in mafic and ultramafic plutonic rocks in Alentejo, Portugal. The Sines massif appears to be the most promising massif for mineral carbonation and its geochemistry, petrography, mineralogy, volume and extension are characterized. Its offshore volume and extension are evaluated through reinterpretation of previous geophysical data which confirms the occurrence of two well defined magnetic anomalies. The Sines magnetic anomaly is directly related with the outcropping area of the Sines massif to the continental shelf; three-dimensional modelling (3D) of apparent magnetic susceptibility correlates with a volume of 217 km3.The offshore magnetic anomaly presents an estimated volume of 226 km3 and is located about 10 km from the Sines anomaly to the Southwest. If both anomalies result from a single igneous body, the area of the Sines massif could as be large as 300 km2. However, the possibility of these that those two anomalies correspond distinct mafic igneous structures in the continental shelf cannot be discarded and should be further investigated.RESUMO: O projeto InCarbon pretende avaliar o potencial para a carbonatação mineral in-situ das rochas plutónicas máficas e ultramáficas no Alentejo para o armazenamento de CO2. O maciço de Sines parece ser o maciço mais promissor para carbonatação mineral no Alentejo e é caracterizado do ponto de vista geoquímico, petrográfico, mineralógico, bem assim como do ponto de vista do seu volume e extensão. A avaliação do volume e da extensão na área offshore foi efetuada reinterpretando dados geofísicos existentes os quais confirmam a ocorrência de duas anomalias magnéticas bem definidas. A anomalia magnética de Sines (sobre o continente) está diretamente relacionada com prolongamento do maciço de Sines para a plataforma continental. Com base em modelação tridimensional (3D) da suscetibilidade magnética aparente foi obtido um volume de 217 km3. A anomalia magnética offshore, localizada na plataforma continental, apresenta um volume estimado de 226 km3 e está localizada a cerca de 10 km a sudoeste da anomalia de Sines. Se ambas as anomalias estiverem relacionadas com um mesmo corpo ígneo, então a extensão do maciço de Sines poderá atingir uma área de 300 km2. No entanto, a possibilidade dessas duas anomalias corresponderem a estruturas máficas distintas não pode ser descartada e deve ser investigada.info:eu-repo/semantics/publishedVersio

Contribution of remote sensing to the evidence and location of granite hosted pegmatites – Ponte da Barca (Minho)

"I Congresso Internacional de Geociências na CPLP"Em contexto de prospecção de bolsadas pegmatíticas hospedadas em granitos da região de Ponte da Barca, procurou‑se, combinando técnicas de análise distanciada e levantamento de campo, detectar interfaces litológicas com as quais se pudesse relacionar a organização espacial e estrutural dos pegmatitos aí aflorantes. A evidência de alinhamentos curvilíneos em imagens do Landsat, sobretudo bem marcados nas imagens que resultam da aplicação de algoritmos de classificação Maxver, são compatíveis com a existência de fluidalidades planares ou plano‑‑lineares concêntricas, possivelmente herdadas de plumas de “ballooning”, verificando‑‑se uma correlação espacial entre a localização dos pegmatitos e as suas periferias, que separam domínios diferenciados de “clustering” de fenocristais.Within the context of prospecting operations of pegmatite bodies hosted in granites in the Ponte da Barca region, we sought to detect lithologic interfaces from which the relationship between the spatial and structural organization of the outcropping pegmatite bodies could be established, by combining field work and remotely sensed data analysis. The evidence of curvilinear alignments in LANDSAT imagery, especially well‑marked in the images obtained from the application of classification algorithms, are compatible with the existence of concentric planar or plan‑linear fluidalities, possibly inherited from ballooning plumes. We thus verified a spatial correlation between the pegmatite outcrops and ballooning plumes peripheries, which separate different domains of phenocristaline clustering

Multidimensional Health Impact of Multicomponent Exercise and Sustainable Healthy Diet Interventions in the Elderly (MED-E): Study Protocol

Data concerning the combined effect of diet and exercise interventions on overall health in the elderly are scarce. The MED-E project's primary aim is to assess the effect of the different 3-month sustainable healthy diet (SHD) and multicomponent training (MT) interventions on several health outcomes in the elderly. A quasi-experimental study assigned older adults into four groups: (1) SHD, (2) MT, (3) SHD + MT, or (4) control group (CG). The SHD intervention included a weekly offer of a mixed food supply and individual and group nutritional sessions on the principles of an SHD. The MT groups were submitted to 50-min exercise sessions three times a week. The primary outcomes were blood biomarkers and metabolic profile alterations that were assessed pre- and post-intervention. Additionally, data on dietary intake and nutritional adequacy, physical fitness, body composition and anthropometry, cognitive function, quality of life, and geographical data were assessed at the same time points. The MED-E project's study protocol and future results will add to knowledge about the importance and beneficial contribution of combined SHD and MT interventions on healthy ageing policies

Pathogens in ornamental waters: a follow up study

Ornamental waters of easy access and populated with animals are quite attractive and can hide threats to human health. Here we evaluated the microbiota of ornamental waters in a Lisbon park. Water and biofilm samples where collected, in 2 lakes (L1-L2) and ornamental fountains (L3-L4) in February/2015. In May/2015 and monthly during a year (starting March/2016) samples from L4 where collected. Microbiota identification was performed as described previouslya. Biofilm assembly was monitored by crystal violet assay and SEMb and antibiotic susceptibility was performed by conventional methods. The results of the first water sampling (Feb/2015) revealed the presence of Enterobactereaceae and non-fermentative oxidase-positive bacteria. Fountains and lakes presented different microbota being the highest diversity found in L1 hosting a duck population. This result suggested the existence of an interplay between animal inhabitants and microbiota which was confirmed by the second sampling of L4 (May/2015). Between the 2 sampling events a fish population was introduced and the microbiota was completely altered with the appearance of a typical fish pathogen (Aeromonas spp). This tendency was also confirmed over 2016. K. pneumoniae and Aeromonas spp., present as planktonic and biofilm organized bacteria in 2015 showed an enhanced ability to assemble biofilms in vitro at 25 °C than at 37 °C. Bacteria recovered from biofilm showed an increased antibiotic resistance compared to planktonic counterparts. The pilot study conducted during 2015 and the follow up study (still in progress) support a periodic control of ornamental water microbiota as simple preventive measure to avoid potential health issues.Fundação para a Ciência e Tecnologia for the grant PEst-OE/CTM/UI0084/2011N/

Foundations and trends of high resolution energy dispersive PIXE (HiRED-PIXE)

High Resolution Particle Induced X-ray Emission, for short HR-PIXE, dates back to 1977 and is, therefore, nearly as old as standard PIXE itself. Until roughly ten years ago, High Resolution PIXE (HR-PIXE) work used only wavelength dispersive spectrometers (WDS). The installation, in 2008, of an X-ray Microcalorimeter Spectrometer, XMS at CTN (ITN at the time) 3MV tandetron, altered this situation and, as can be recognised today, will lead to major changes in PIXE, and open up many possibilities that have been hindered so far. In this work, motives, developments, important breakthrough results obtained until now, and a case study displaying speciation data and complementary information from nuclear magnetic relaxometry, are presented and discussed, showing the full quantitative potential of High Resolution Energy Dispersion PIXE (HiRED-PIXE), in particularly the opening up of the possibility to establish fast and efficient methods for quantitative elemental speciation in unknown samples