A5030756754- Groundwater flow and contamination studies
- Soil and Unsaturated Flow
- Geophysical and Geoelectrical Methods
- Groundwater and Isotope Geochemistry
- Geophysical Methods and Applications
- Soil Moisture and Remote Sensing
- Fecal contamination and water quality
- Hydrocarbon exploration and reservoir analysis
- Tribology and Lubrication Engineering
- Hydraulic Fracturing and Reservoir Analysis
- Grouting, Rheology, and Soil Mechanics
- earthquake and tectonic studies
- Coal Properties and Utilization
- Landslides and related hazards
- Geological and Geophysical Studies
- Seismic Imaging and Inversion Techniques
- Water Systems and Optimization
- Hydraulic and Pneumatic Systems
- Mechanical Engineering and Vibrations Research
- Enhanced Oil Recovery Techniques
- Gear and Bearing Dynamics Analysis
- Radioactivity and Radon Measurements
- Soil Geostatistics and Mapping
- Karst Systems and Hydrogeology
- Drilling and Well Engineering
National Research Council
2020-2025
Water Research Institute
2014-2025
National Research Council
2024
Polytechnic University of Turin
2012
Groundwater is one of the major sources water supply for human needs. But anthropic activities such as agriculture are causing significant volume depletion and quality deterioration, favoring microbial contamination that has a negative impact on health. The geological characteristics ground can influence transport microorganisms, especially if made permeable rock. Furthermore, irrigation with untreated or partially treated wastewater represent an additional health risk due to potential...
The transport of pathogens through rocks is often regarded as negligible unless there are fractures in the medium. However, sedimentary may have a porosity that allows migration even when they unfractured.In this work, we investigated behavior several (namely Escherichia coli and Enterococci faecalis) porous rock made 98.5 wt.% calcite (CaCO3), hydraulic conductivity 6·10−6 m/s, 0.43. Core flooding experiments were performed under variable head conditions, ensuring full...
The water retention curve, which relates the matric potential, ψ, to content, θ, is essential describe flow processes in unsaturated zone and provides useful information for environmental engineering applications. There are few studies devoted measuring rock curves due rock’s tightness, makes it more technically difficult use specific methods. In this study, we tested four different methods measure of two lithotypes carbonate porous rocks with aim find most effective be applied samples....
The Darcy–Buckingham (DB) law, critical to the prediction of unsaturated flow, is widely used but has rarely been experimentally tested, and therefore may not be adequate in certain conditions. Failure this law would imply that hydraulic conductivity constant for a given water content, as assumed nearly all subsurface flow models. This study aims test DB on porous rock, complementing few previous tests, done soils. Two lithotypes calcareous rocks were tested. quasi-steady centrifuge method...
Abstract The water retention function is essential for modeling flow and transport in porous media. Its experimental determination still challenging because each of the standard methods limited to partial moisture ranges. pore‐size distribution (PSD) obtained by mercury intrusion porosimetry (MIP) may be used as a unifying property that spans across individual ranges properties with methods. This study compares MIP quasi‐steady centrifuge (QSC) ones (suction table, evaporation, dewpoint...
In recent years, geophysical techniques have been increasingly used to monitor flow and transport processes in the Earth critical zone (ECZ). Among these, electrical resistivity tomography (ERT) is a powerful tool predict hydrological parameters state variables that influence mentioned vadose because of strong correlation between properties filtering medium. There many field tests considering prospecting soils, where point scale sensors measurements are typically collected through for data...
Abstract Preferential flow in the unsaturated zone strongly influences important hydrologic processes, such as infiltration, contaminant transport, and aquifer recharge. Because it entails various combinations of physical processes arising from interactions water, air, solid particles a porous medium, preferential is highly complex. Major research needed to improve ability understand, quantify, model, predict flow. Toward solution, combination diverse experimental measurements at multiple...
In coastal areas, saltwater intrusion causes a depletion of the resource by reducing potable and irrigation freshwater supplies causing severe deterioration groundwater quality.This trend is observed in Pwales Valley – Maltese Island, where water management plays crucial role for environmental sustainability area, given importance intensive agricultural activity along this valley. order to tackle such phenomenon, actions or adaptation measures against climate change are strongly...
Abstract The determination of hydraulic characteristics as a function the pressure head is laborious and data ranges are restricted. Indirect methods to estimate K ( h ) introducing additional uncertainty method‐dependent restricted that can hamper bimodal curve fitting. objective this study was re‐evaluate centrifuge approach for directly measuring unsaturated properties porous carbonate rock glacial till soil samples. Hydraulic conductivity determined by means evaporation (EVA),...
The tribology of cam-roller follower conjunction is highly dependent on the engine type and working conditions. interface experiences transient conditions due to variations in contact geometry kinematics, as well loading. These lead instantaneous capricious behavior lubricant through contact, which determines regime lubrication. resulting frictional characteristics are affected by shear film interaction rough surfaces themselves. Thus, specific analysis required for any intended new...
Introduction In agriculture, accurate hydrological information is crucial to infer water requirements for modeling, as well appropriate management. Methods To achieve this purpose, geophysical frequency domain electromagnetic induction (FDEM) measurements are increasingly used integration with traditional point-scale provide effective soil moisture estimations over large areas. The conversion of properties requires specific tools that must take into account the spatial variability two and...
Whitin the aim to reduce water demand by increasing use efficiency and providing alternative resources, mainly meet of good quality irrigation for agriculture, Energy Water Agency Malta is planning develop a Managed Aquifer Recharge pilot plant in Pwales Valley improve quantitative qualitative status groundwater body. For this reason detailed hydraulic characterization valley was carried out. Specifically, properties rocks that constitute strata atop aquifer were determined means both...
In coastal areas, saltwater intrusion causes a depletion of the resource by reducing potable and irrigation freshwater supplies causing severe deterioration groundwater quality. This trend is observed in Pwales Valley, North part Malta where management water resources plays crucial role for environmental sustainability area, given importance intensive agricultural activity along this valley. order to tackle such phenomenon, actions or adaptation measures against climate change are strongly...