A5080703826- Planetary Science and Exploration
- Astro and Planetary Science
- Laser-induced spectroscopy and plasma
- Space Exploration and Technology
- Solid-state spectroscopy and crystallography
- Spectroscopy Techniques in Biomedical and Chemical Research
- Geochemistry and Geologic Mapping
- Spacecraft Design and Technology
- Spaceflight effects on biology
- Spectroscopy and Quantum Chemical Studies
- Space Science and Extraterrestrial Life
- Geology and Paleoclimatology Research
- Human Rights and Immigration
- Spacecraft and Cryogenic Technologies
- Isotope Analysis in Ecology
- Building materials and conservation
- Spectroscopy and Chemometric Analyses
- Cultural Heritage Materials Analysis
- Finance, Taxation, and Governance
- Corrosion Behavior and Inhibition
- Chemical and Physical Properties in Aqueous Solutions
- Space exploration and regulation
- Chemical Thermodynamics and Molecular Structure
- Minerals Flotation and Separation Techniques
- Geological and Geophysical Studies Worldwide
Universidad de Valladolid
2015-2024
Centro de Astrobiología
2012-2024
Jet Propulsion Laboratory
2022
Blue Marble Space
2022
Blue Marble Space Institute of Science
2022
California Institute of Technology
2021
Johnson Space Center
2021
University of Hawaiʻi at Mānoa
2021
University of New Mexico
2021
Search for Extraterrestrial Intelligence
2021
The Raman Laser Spectrometer (RLS) on board the ESA/Roscosmos ExoMars 2020 mission will provide precise identification of mineral phases and possibility to detect organics Red Planet. RLS work powdered samples prepared inside Pasteur analytical suite collected surface subsurface by a drill system. spectroscopy is well-known technique based inelastic scattering matter incident monochromatic light (the effect) that has many applications in laboratory industry, yet be used space applications....
Abstract On the NASA 2020 rover mission to Jezero crater, remote determination of texture, mineralogy and chemistry rocks is essential quickly thoroughly characterize an area optimize selection samples for return Earth. As part Perseverance payload, SuperCam a suite five techniques that provide critical complementary observations via Laser-Induced Breakdown Spectroscopy (LIBS), Time-Resolved Raman Luminescence (TRR/L), visible near-infrared spectroscopy (VISIR), high-resolution color imaging...
Before Perseverance, Jezero crater's floor was variably hypothesized to have a lacustrine, lava, volcanic airfall, or aeolian origin. SuperCam observations in the first 286 Mars days on revealed and intrusive terrain with compositional density stratification. The dominant lithology along traverse is basaltic, plagioclase enrichment stratigraphically higher locations. Stratigraphically lower, layered rocks are richer normative pyroxene. lowest observed unit has highest inferred olivine-rich...
A series of recent acute blindness cases following non-complicated retinal detachment surgery caused the release several health alerts in Spain. The was attributed to certain lots perfluoro-octane (PFO; a volatile and transient medical device). Similar have been reported other countries. This has raised questions regarding validity cytotoxicity test methods currently used certify safety PFO lots. tests were performed according International Organization for Standardization (ISO) norms, using...
Abstract Identifying unequivocal signs of life on Mars is one the most important objectives for sending missions to red planet. Here we report Red Stone, a 163-100 My alluvial fan–fan delta that formed under arid conditions in Atacama Desert, rich hematite and mudstones containing clays such as vermiculite smectites, therefore geologically analogous Mars. We show Stone samples display an number microorganisms with unusual high rate phylogenetic indeterminacy, what refer “dark microbiome”,...
A new analytical method, based on the Raman spectroscopy of ν(OH) stretching vibration water, has been developed for determination concentration chloride in aqueous solutions with goal reconstructing bulk ion content fluid inclusions that are relics paleo-fluid circulation rocks. The method involves calibrating area one band spectrum difference between pure water and appropriate composition respect to concentration. Calibration curves were constructed major geological chemical salts LiCl,...
Abstract The quantitative determination of crystallinites polyethylene samples from the analysis vibrational bands due to δ(CH 2 ) twisting and v (CC) stretching in Raman spectra between 950 1500 cm −1 was assessed. Several methods based on manual resolution band envelopes computer‐derived information using Gaussian Lorentzian profiles were compared. major source error found be estimation amorphous crystalline interphase content, α b . A new method for sample crystallinity is proposed...
We report the fabrication of highly crystalline magnetite particles with a uniform morphology and relatively average size 54 nm. Particles were fabricated by oxidation Fe(OH)2 nitrate in basic aqueous media. Characterization means transmission electron microscopy, Raman spectroscopy, X-ray diffraction, magnetometry showed that they octahedral magnetic monodomains stoichiometric (unit formula was estimated to be Fe2.985O4), room-temperature ferrimagnetic behavior saturation magnetization 81.6 emu/g.
To describe a series of retinal acute toxicity cases with severe visual loss after intraocular use toxic perfluoro-octane (PFO). The clinical presentation is described, and the likely causes are analyzed. New biological methods for testing safety medical devices proposed.Information regarding eyes suffering events PFO was Four types spectroscopy, nuclear magnetic resonance, chromatography were used to identify potential contaminants. Cultures human pigment epithelial cells (ARPE-19) porcine...
The Perseverance rover is exploring Jezero crater on Mars since February 2021. SuperCam instrument part of the scientific payload, combining five different techniques in order to characterize targets sample: LIBS (Laser-Induced Breakdown Spectroscopy), Raman and Visible Infrared (VISIR) spectroscopies, Sound Recording a colored Imager. Thirty-six calibration have been developed for this instrument. Twenty-three these are dedicated technique, corresponding rocks and/or minerals. VISIR...
Abstract In the context of a long study dynamical properties water and inorganic aqueous solutions using infrared (IR) Raman spectroscopy,we present here recent results influence salt concentration on dynamics molecules. The main systems studied were salts X n Y m type (where = Li + , Na K Rb Cs Mg 2+ Zn Cl – ,ClO 4 NO 3 SO –2 ). whole spectrum reflects molecular ionic interactions between solvent molecules solvent–solute solute–solute Nevertheless, each spectral region supplies different...
Abstract A comprehensive micro‐Raman spectroscopic analysis of the Nakhla and Vaca Muerta meteorites is reported. The major minor mineral components were identified from comparison with mineralogical standards literature databases. compositions pyroxenes olivines obtained using only this technique correlation data between band parameters chemical composition reference materials existing in literature. presence calcite both meteorite specimens was noted; its identification inside eucrite...
Abstract Polarized Raman spectra of water in the ν(OH) and δ(OH 2 ) regions have been recorded for aqueous solutions electrolytes types AB (A = Li, Na, K, Ca; B Cl, Br, I, NO 3 over a wide concentration range. Variations frequencies, intensities, band shapes widths with changes nature ions are discussed. The isotropic anisotropic components intensity analysed as function concentration. It is found that 45(a') approximately independent of, or decreases slightly with, alkali metal halides...
The Mars Astrobiology Research and Technology Experiment (MARTE) simulated a robotic drilling mission to search for subsurface life on Mars. drill site was Peña de Hierro near the headwaters of Río Tinto river (southwest Spain), deposit that includes massive sulfides their gossanized remains resemble some iron sulfur minerals found used fluidless, 10-axis, autonomous coring mounted lander. Cores were faced; then instruments collected color wide-angle context images, microscopic visible–near...
In Earth Sciences and Cultural Heritage Science we can only understand the formation of ‘objects’ if they are well characterized. Optical observation, including optical microscopy, is still primary tool essential in obtaining a preliminary, qualitative determination an object, to determine relations between it other objects, place general context. Most time, however, observations insufficient. Spectroscopic methods second “set eyes” used gain greater insight into these objects use physical...
Abstract Mineralogy is the key to understanding origin of Phobos and its position in evolution Solar System. In situ Raman spectroscopy on an important tool achieve scientific objectives Martian Moons eXploration (MMX) mission, maximize merit sample return by characterizing mineral composition heterogeneity surface Phobos. Conducting harsh environment requires a very sensitive, compact, lightweight, robust instrument that can be carried compact MMX rover. this context, spectrometer for...
Abstract Recently reported results from latest Mars Orbiters and Rovers missions are transforming our opinion about the red planet. That dry inhospitable planet in past is becoming a wetter with high probabilities of water existence past. Nowadays, some seem to indicate presence beneath surface. But also mineralogy studies by NASA Opportunity Rover report iron oxides hydroxides precipitates on Endurance Crater. Sedimentary deposits have been identified at Meridiani Planum. These must...
One of the latest volcanic features Erta Ale range at Afar Triangle (NE Ethiopia) has created a polyextreme hydrothermal system located Danakil depression on top protovolcano known as dome Dallol. The interaction underlying basaltic magma with evaporitic salts generated unique, high-temperature (108 °C), hypersaline (NaCl supersaturated), hyperacidic (pH values from 0.1 to -1.7), oxygen-free site containing up 150 g/L iron. We find that colorful brine pools and mineral patterns Dallol derive...