A5107335937- Planetary Science and Exploration
- earthquake and tectonic studies
- Geological and Geochemical Analysis
- High-pressure geophysics and materials
- Astro and Planetary Science
- Laser-induced spectroscopy and plasma
- Cultural Heritage Materials Analysis
- Isotope Analysis in Ecology
- Space Exploration and Technology
- Methane Hydrates and Related Phenomena
- Geochemistry and Geologic Mapping
- Spectroscopy Techniques in Biomedical and Chemical Research
- Pleistocene-Era Hominins and Archaeology
- Earthquake Detection and Analysis
- Glass properties and applications
- Geological and Geophysical Studies
- Advanced Chemical Sensor Technologies
- Paleontology and Stratigraphy of Fossils
- Catalysis and Oxidation Reactions
- Paleontology and Evolutionary Biology
- Archaeology and ancient environmental studies
- Hydrocarbon exploration and reservoir analysis
- Mineral Processing and Grinding
- Spectroscopy and Chemometric Analyses
- Polar Research and Ecology
McGill University
2016-2023
University of Calgary
2023
Los Alamos National Laboratory
2023
Université du Québec à Montréal
2019
University of Oxford
2013
The mechanisms of hazardous silicic eruptions are controlled by complex, poorly-understood conduit processes. Observations recent Chilean rhyolite have revealed the importance hybrid activity, involving simultaneous explosive and effusive emissions from a common vent. Such behaviour hinges upon ability gas to decouple magma in shallow conduit. Tuffisite veins increasingly suspected be key facilitator outgassing, as they repeatedly provide transient permeable escape route for volcanic gases....
A straight-forward, data-driven approach for the reliable identification of clay minerals based on spectroscopy and multivariate analyses is presented here. No other group inorganic materials have so many species, exhibit such a range physicochemical properties, or enjoy greater diversity practical applications as minerals. The emerging role clays in variety pioneering disciplines, pharmaceutical astrobiological sciences, highlights their broad-ranging significance natural science...
Abstract As the SARS-CoV-2 pandemic persists, methods that can quickly and reliably confirm infection immune status is extremely urgently critically needed. In this contribution we show combining laser induced breakdown spectroscopy (LIBS) with machine learning distinguish plasma of donors who previously tested positive for by RT-PCR from those did not, up to 95% accuracy. The samples were also analyzed LIBS-ICP-MS in tandem mode, implicating a depletion Zn Ba subjects inversely correlate CN...
Abstract The NASA Curiosity rover's ChemCam instrument suite has detected boron in calcium‐sulfate‐filled fractures throughout the sedimentary strata of Gale crater including Vera Rubin ridge. presence elevated B concentration provides insights into Martian subsurface aqueous processes. In this study we extend data set Ca‐sulfate veins across crater, comparing detection frequency and relative abundances with Li. We report 33 new detections within analyzed between Sols 1548 2311 where...
Low H2O concentrations preserved in the erupted products from 2011-2012 eruption at Cordón Caulle, Chile, have limited its use as a recorder of shallow degassing processes responsible for observed hybrid activity. However, volatile trace element heterogeneity (e.g. Li, Pb, Tl) is different textural domains breccias, tuffisites), which each represent competing fracturing, gas fluxing and melt relaxation occurring locations within upper conduit. Elemental depletions tuffisite veins record...
Research on the correlation between metal levels in blood and Covid-19 infection has been conducted primarily by assessing how each individual is linked to different aspects of disease using samples from donors with various severity infection. Using logistics regression LIBS spectra plasma collected pre- post- pandemic known have developed antibodies SARS-Cov-2 virus, we show that relying Na, K, Mg together more efficient at differentiating two types than any single alone.
The aim of this work is to understand the formation primary evaporites—sulfates, borates, and chlorides—in Gale crater using thermochemical modeling determine constraints on their formation. We test hypothesis that evaporites required multiple wet-dry cycles form, akin how evaporite assemblages form Earth. Starting with a basalt-equilibrated Mars fluid, Mars-relevant concentrations B Li were added, then equilibrated lacustrine bedrock. simulated evaporation followed by groundwater...
Research on the correlation between bio-metal levels in blood and Covid-19 has been conducted primarily by assessing how each individual is linked to different aspects of disease. Instead relying a single approach, we study that focused combined effects four bio-metals differentiation plasma samples from pre-pandemic donors known developed antibodies SARS-Cov-2 virus. Using machine learning laser spectroscopy data, obtain higher patients than when considered separately. This suggests...
Glaciovolcanic systems, where hydrothermal heat interacts with ice, offer favorable conditions for life by providing liquid water, nutrients, and physicochemical gradients (Cousins Crawford 2011). Despite significant climate change, evidence glaciovolcanism is widespread through Mars’ history. Such sites may have offered refugia after Mars lost much of its surface representing some the most recent habitable areas promising to recover biomarkers. We examined a terrestrial glaciovolcanic site...