I.M.H.R. Antunes
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View article: A data-driven high-accuracy modelling of acidity behavior in heavily contaminated mining environments
A data-driven high-accuracy modelling of acidity behavior in heavily contaminated mining environments Open
Accurate estimation of water acidity is essential for characterizing acid mine drainage (AMD) and designing effective remediation strategies. However, conventional approaches, including titration and empirical estimation methods based on i…
View article: Acid mine drainage and waste dispersion in legacy mining sites: An integrated approach using UAV photogrammetry and geospatial analysis
Acid mine drainage and waste dispersion in legacy mining sites: An integrated approach using UAV photogrammetry and geospatial analysis Open
Abandoned mines pose environmental risks due to the accumulation of sulfide-rich waste, which generates acid mine drainage and produces fine-grained, unconsolidated materials that, when deposited on steep slopes, accelerate erosion and con…
View article: Introducing AutoML and the noisy-average probabilistic independence of causal influence (PICI) model for the prediction of ornamental stone quality
Introducing AutoML and the noisy-average probabilistic independence of causal influence (PICI) model for the prediction of ornamental stone quality Open
The application of machine learning techniques to analyze large datasets enables mining companies to identify risks and allocate resources effectively, maintaining their competitive advantage. Specifically, software designed to predict the…
View article: Variscan Plutonism in the Geodynamic Evolution of the Central Iberian Zone of Portugal: Castelo Branco Pluton as Another Piece of the Puzzle
Variscan Plutonism in the Geodynamic Evolution of the Central Iberian Zone of Portugal: Castelo Branco Pluton as Another Piece of the Puzzle Open
A multidisciplinary analysis of the Pennsylvanian Castelo Branco pluton of Central Iberian Zone (Iberian Variscan belt) was made, focusing on its magnetic behavior and fabric, microstructures, microfractures, and radiometric and gravimetri…
View article: Water Resources Availability on a River Watershed in a Relevant Mineral Province (Minas Gerais, Brazil): An Integrated Approach to Water Resources Management
Water Resources Availability on a River Watershed in a Relevant Mineral Province (Minas Gerais, Brazil): An Integrated Approach to Water Resources Management Open
The watershed of the Peixe River lies in central Minas Gerais state, close to Belo Horizonte city, a densely populated area. The area is located in the geological context of Quadrilátero Ferrífero, one of the most prominent mineral provinc…
View article: Groundwater Model for Karst and Pelitic Aquifer Systems from a Semi-Arid Region Under Climate Change Scenarios: A Case Study in the Vieira River Watershed, Brazil
Groundwater Model for Karst and Pelitic Aquifer Systems from a Semi-Arid Region Under Climate Change Scenarios: A Case Study in the Vieira River Watershed, Brazil Open
Water scarcity is a global issue, especially in semi-arid and arid regions where precipitation is irregularly distributed over time and space. Predicting groundwater flow in heterogeneous karst terrains, which are essential water sources, …
View article: From Settlement Abandonment to Valorisation and Enjoyment Strategies: Insights through EU (Portuguese, Italian) and Non-EU (Albanian) ‘Ghost Towns’
From Settlement Abandonment to Valorisation and Enjoyment Strategies: Insights through EU (Portuguese, Italian) and Non-EU (Albanian) ‘Ghost Towns’ Open
The abandonment of inhabited places is a phenomenon widespread on a global scale that has spanned centuries. It has led to the birth of the so-called ‘ghost towns’. These lifeless sites dot the internal Mediterranean and European areas, te…
View article: Enhancing water quality prediction for fluctuating missing data scenarios: A dynamic Bayesian network-based processing system to monitor cyanobacteria proliferation
Enhancing water quality prediction for fluctuating missing data scenarios: A dynamic Bayesian network-based processing system to monitor cyanobacteria proliferation Open
Tackling the impact of missing data in water management is crucial to ensure the reliability of scientific research that informs decision-making processes in public health. The goal of this study is to ascertain the root causes associated …
View article: Fisioterapia e hospitalização domiciliária: casuística da atividade desenvolvida numa unidade da região Centro
Fisioterapia e hospitalização domiciliária: casuística da atividade desenvolvida numa unidade da região Centro Open
Introdução: A Hospitalização Domiciliária (HD) é um modelo de assistência hospitalar inovador, seguro e eficaz, que se encontra em crescendo no nosso país. Diversos estudos suportam o contributo dos cuidados de fisioterapia na otimização d…
View article: Aquifer systems in dry regions: Hydro-geophysical and geochemical investigations providing insights into water resources in southeast Tunisia
Aquifer systems in dry regions: Hydro-geophysical and geochemical investigations providing insights into water resources in southeast Tunisia Open
Water demands from agriculture and industry have intensified groundwater extraction, prompting a focused study to bolster water resources, particularly at Gabès region (Southeastern Tunisia). Through extensive geologic and geophysical inve…
View article: A New Acidity-Based Approach for Estimating Total Dissolved Solids in Acidic Mining Influenced Water
A New Acidity-Based Approach for Estimating Total Dissolved Solids in Acidic Mining Influenced Water Open
In natural waters, total dissolved solids (TDS) are usually estimated from electrical conductivity (EC) by applying a conversion factor (f). However, defining this conversion factor for mining influenced water is more complex since this ty…
View article: Modeling groundwater recharge mechanisms in semi-arid regions: integration of hydrochemical and isotopic data
Modeling groundwater recharge mechanisms in semi-arid regions: integration of hydrochemical and isotopic data Open
Groundwater resources management is of strategic importance, particularly in arid and semi-arid regions, mainly associated to climatic environment and human pressures. Southeastern Tunisia, particularly Gabès region, is considered as one o…
View article: Hydrogeology of Karst and Metapelitic Domains of the Semi-Arid Vieira River Watershed (Brazil)—A Contribution to Groundwater Resource Management
Hydrogeology of Karst and Metapelitic Domains of the Semi-Arid Vieira River Watershed (Brazil)—A Contribution to Groundwater Resource Management Open
Water scarcity is a problem in Brazil’s northern semi-arid domain. Montes Claros is the most populated Minas Gerais city in this context, and its socio-economic problems are related to water consumption and management. Aiming to help asses…
View article: COVID-19 vaccine effectiveness among healthcare workers: a hospital-based cohort study
COVID-19 vaccine effectiveness among healthcare workers: a hospital-based cohort study Open
Objectives Healthcare workers (HCWs) were the first to be prioritised for COVID-19 vaccination. This study aims to estimate the COVID-19 vaccine effectiveness (VE) against SARS-CoV-2 symptomatic infection among HCWs in Portuguese hospitals…
View article: Groundwater management: Effectiveness of mitigation measures in nitrate vulnerable zones – a Portuguese case study
Groundwater management: Effectiveness of mitigation measures in nitrate vulnerable zones – a Portuguese case study Open
Groundwater vulnerability depends on hydrogeological characteristics, land use dynamics and pollutant sources. In Europe, agriculture is the main source of diffuse groundwater pollution. The over-application of nitrogen (N) soil inputs pro…
View article: The geochemical behavior of Pb and Zn in waters and stream sediments around a former Pb-Zn mine, central Portugal
The geochemical behavior of Pb and Zn in waters and stream sediments around a former Pb-Zn mine, central Portugal Open
View article: Groundwater Vulnerability and Potentially Toxic Elements Associated with the Iron Mining District of Ouixane (Northeast of Morocco)
Groundwater Vulnerability and Potentially Toxic Elements Associated with the Iron Mining District of Ouixane (Northeast of Morocco) Open
This study aims to investigate the groundwater vulnerability concerning potentially toxic elements in the vicinity of the abandoned iron mine of Ouixane (Morocco). A modified DRASTIC method (DRSTI) is proposed with satisfactory results. Hi…
View article: Hydrogeochemical processes on inland aquifer systems: A combined multivariate statistical technique and isotopic approach
Hydrogeochemical processes on inland aquifer systems: A combined multivariate statistical technique and isotopic approach Open
Groundwater is an important resource used for multiple purposes and should be protected, especially, in semi-arid and arid regions. The aim of this study is to assess the main processes on groundwater salinization from Menzel Habib shallow…
View article: Groundwater quality for irrigation in an arid region—application of fuzzy logic techniques
Groundwater quality for irrigation in an arid region—application of fuzzy logic techniques Open
View article: Flood Hazard Index Application in Arid Catchments: Case of the Taguenit Wadi Watershed, Lakhssas, Morocco
Flood Hazard Index Application in Arid Catchments: Case of the Taguenit Wadi Watershed, Lakhssas, Morocco Open
During the last decade, climate change has generated extreme rainfall events triggering flash floods in short periods worldwide. The delimitation of flood zones by detailed mapping generally makes it possible to avoid human and economic lo…
View article: Stream sediments as a repository of U, Th and As around abandoned uranium mines in central Portugal: implications for water quality management
Stream sediments as a repository of U, Th and As around abandoned uranium mines in central Portugal: implications for water quality management Open
This work focuses on the study of water–sediment interaction around abandoned uranium mines with open-pit lakes and
\nmine dumps. Nineteen water and eleven stream sediment samples were collected in the abandoned Barrôco D. Frango
\nmine, c…
View article: Impact of Old Pb Mining and Metallurgical Production in Soils from the Linares Mining District (Spain)
Impact of Old Pb Mining and Metallurgical Production in Soils from the Linares Mining District (Spain) Open
Mineral processing and metallurgy production centers may leave a far-reaching fingerprint of soil contamination. This scenario is particularly relevant in the mining district of Linares (Southern Spain), where former industrial sites are n…
View article: Marine biodiversity of the Southwest Alentejo and Costa Vicentina Natural Park (Project MARSW)
Marine biodiversity of the Southwest Alentejo and Costa Vicentina Natural Park (Project MARSW) Open
This dataset is based on the Project "Marine biodiversity information and monitoring systems in the Southwest Alentejo and Costa Vicentina Classified Areas (MARSW)". It presents occurrence data (5120 records) of the marine organisms observ…
View article: Geothermal resources research in a granitic basement - the Braga area case study (NW Portugal)
Geothermal resources research in a granitic basement - the Braga area case study (NW Portugal) Open
Geothermal resources are increasingly being considered as a strategic alternative in energy production, especially with the latest geopolitical developments. The densely populated Braga region, in NW Portugal, is endowed with a geostructur…
View article: Marketing Intelligence and Research
Marketing Intelligence and Research Open
Num ambiente cada vez mais concorrencial, as organizações precisam de conhecer o perfil dos seus clientes e estar atentas às mudanças do meio envolvente e ao comportamento dos concorrentes, consumidores e clientes. Para isso, precisam de o…
View article: Sensibility of Tourmaline Chemistry to Granitic Magma Composition and Oxygen Fugacity
Sensibility of Tourmaline Chemistry to Granitic Magma Composition and Oxygen Fugacity Open
View article: Assessment of Irrigation Water Quality in Menzel Habib Aquifer System – A Combined Geochemical and Fuzzy Logic Approaches
Assessment of Irrigation Water Quality in Menzel Habib Aquifer System – A Combined Geochemical and Fuzzy Logic Approaches Open
Groundwater is an important source for irrigation uses in many arid and semi-arid regions such as Menzel Habib area. In this work, the groundwater quality for irrigation water was investigated based on conventional indices notably Electric…
View article: Geological and hydrogeological review of a semi-arid region with conflicts to water availability (southeastern Brazil)
Geological and hydrogeological review of a semi-arid region with conflicts to water availability (southeastern Brazil) Open
Groundwater consumption has become increasingly relevant for urban development. The city of Montes Claros (Minas Gerais, Brazil) is located in the border region of the Brazilian semi-arid polygon and has registered conflicts of water use f…
View article: Hydrochemistry and Evolution of Water Quality in a Context of Aridity and Increasing Agriculture in Three River Sub-Basins of Santiago Island (Cape Verde)
Hydrochemistry and Evolution of Water Quality in a Context of Aridity and Increasing Agriculture in Three River Sub-Basins of Santiago Island (Cape Verde) Open
In regions under development and facing recurrent droughts, increasing the area of irrigated agriculture may create additional disruption in water resources management. The present study was focused on three river sub-basins with the highe…
View article: DRASTICAI, a New Index for Groundwater Vulnerability Assessment—A Portuguese Case Study
DRASTICAI, a New Index for Groundwater Vulnerability Assessment—A Portuguese Case Study Open
Groundwater vulnerability assessment has become a useful tool for groundwater pollution prevention. Groundwater vulnerability maps provide useful data for protecting groundwater resources. Identification of agricultural patterns is an impo…