Maddi Etxegarai

ORCID: 0000-0002-7694-2008
Publications
Citations
Views
---
Saved
---
About
Contact & Profiles
Research Areas
  • Nuclear Physics and Applications
  • Hydraulic Fracturing and Reservoir Analysis
  • Remote Sensing in Agriculture
  • Radiation Detection and Scintillator Technologies
  • High-pressure geophysics and materials
  • Urban Green Space and Health
  • Particle Detector Development and Performance
  • Urban Heat Island Mitigation
  • Drilling and Well Engineering
  • Remote Sensing and LiDAR Applications
  • Geophysical Methods and Applications
  • Land Use and Ecosystem Services
  • Hydrocarbon exploration and reservoir analysis
  • Atomic and Subatomic Physics Research
  • Digital Transformation in Industry
  • Radiation Therapy and Dosimetry
  • Advanced machining processes and optimization
  • Image Processing and 3D Reconstruction
  • Cultural Heritage Materials Analysis
  • Advanced Welding Techniques Analysis
  • Seismic Imaging and Inversion Techniques
  • Fatigue and fracture mechanics
  • Advanced Chemical Sensor Technologies
  • Food Supply Chain Traceability
  • Electrostatic Discharge in Electronics

Centre Tecnologic de Telecomunicacions de Catalunya
2021-2024

Technological Center of Nutrition and Health
2023

Lund University
2022

Stellenbosch University
2022

Shiraz University of Technology
2022

Universiti Tenaga Nasional
2022

Nasional University
2022

University of the Western Cape
2022

University College Dublin
2022

Centre National de la Recherche Scientifique
2018-2021

Urban forests are becoming increasingly important for human well-being as they provide ecosystem services that contribute to improving of city dwellers and addressing climate change. However, despite their importance, there is an information gap in most the world's urban due high cost complexity conducting standard forest inventories environments. New technologies based on artificial intelligence can represent a smart efficient alternative costly traditional inventories. In this paper, we...

10.1016/j.compenvurbsys.2023.102025 article EN cc-by-nc Computers Environment and Urban Systems 2023-08-14

The positive impact of urban forests and trees on the well-being residents worldwide is well known. Resistance to pests, diseases, extreme weather events are among most critical characteristics resilient cities, closely related species richness and, consequently, diversity street trees. However, forest inventories currently scarce worldwide. For this reason, trees' biodiversity capacity provide these ecosystem services not developed enough. Three state-of-the-art identification applications...

10.1016/j.jag.2024.103735 article EN cc-by International Journal of Applied Earth Observation and Geoinformation 2024-03-01

Abstract High‐speed neutron tomographies (1‐min acquisition) have been acquired during water invasion into air‐filled samples of both intact and deformed (ex situ) Vosges sandstone. Three‐dimensional volume images processed to detect track the evolution waterfront calculate full‐field measurement its speed advance. The flow process correlates well with known rock properties is especially sensitive distribution altered associated observed localized deformation, which independently...

10.1029/2018jb016522 article EN Journal of Geophysical Research Solid Earth 2019-04-01

European Spallation Source instruments like the macromolecular diffractometer (NMX) require an excellent neutron detection efficiency, high-rate capabilities, time resolution, and unprecedented spatial resolution in order of a few hundred micrometers over wide angular range incoming neutrons. For these solid converters combination with Micro Pattern Gaseous Detectors (MPGDs) are promising option. A GEM detector gadolinium converter was tested on cold beam at IFE research reactor Norway. The...

10.1088/1748-0221/11/05/p05011 article EN cc-by Journal of Instrumentation 2016-05-17

Abstract Neutron imaging is used for direct observation of evolving water–air and deuterated water–normal water exchanges in flow experiments performed on a laboratory-deformed, microporous laminated limestone, an extremely fine-textured rock altered by arrays superposed fractures generated mechanics apparatus. The neutron images document significant, evolving, speed direction variability at the deci-micron scale spatially complex patterns both increasing decreasing saturation. We infer that...

10.1007/s11242-022-01873-6 article EN cc-by Transport in Porous Media 2022-11-21

The behaviour of subsurface-reservoir porous rocks is a central topic in the resource engineering industry and has relevant applications hydrocarbon, water production, CO2 sequestration. One key open issues effect deformation on hydraulic properties host rock and, specifically, saturated environments. This paper presents novel full-field data set describing hydro-mechanical geomaterials through situ neutron X-ray tomography. use high-performance imaging facilities such as CONRAD-2...

10.3390/jimaging7120275 article EN cc-by Journal of Imaging 2021-12-14

The Multi-Grid (MG) detector has been introduced at ILL and developed by a collaboration between ILL, ESS Linkoping University. This design addresses the severely decreased availability of He3, in particular for neutron scattering instruments with large-area detectors, such as time-of-flight spectrometers other facilities. MG is based on thin converter films boron-10 carbide arranged layers orthogonal to incoming neutrons. provides position resolution, efficiency competitive He3 strong gamma...

10.1109/nssmic.2015.7582004 article EN 2021 IEEE Nuclear Science Symposium and Medical Imaging Conference (NSS/MIC) 2015-10-01

The boron-10 based Multi-Grid detector is being developed as an alternative to helium-3 neutron detectors. At the European Spallation Source, will be used for time-of-flight spectroscopy at cold thermal energies. objective of this work investigate fine time- and energy-resolved effects detector, down a few $\mu$eV, while comparing it performance typical tube. Furthermore, characterize differences between technologies in terms internal scattering, well time reconstruction ~ $\mu$s short...

10.1088/1361-6501/abc63e article EN cc-by Measurement Science and Technology 2020-10-30

The European Spallation Source (ESS) in Lund, Sweden will become the world's leading neutron source for study of materials. instruments are being selected from conceptual proposals submitted by groups around Europe. These present numerous challenges detector technology absence availability Helium-3, which is default choice detectors built until today and due to extreme rates expected across ESS instrument suite. Additionally a new generation requires technologies fully exploit opportunities...

10.48550/arxiv.1411.6194 preprint EN other-oa arXiv (Cornell University) 2014-01-01
Coming Soon ...