A5088131046- Radioactive contamination and transfer
- Radioactivity and Radon Measurements
- Radioactive element chemistry and processing
- Seismic Imaging and Inversion Techniques
- Nuclear and radioactivity studies
- Geophysical Methods and Applications
- Seismic Waves and Analysis
- Nuclear Physics and Applications
- Lanthanide and Transition Metal Complexes
- Radiation Dose and Imaging
- Magnetism in coordination complexes
- Underwater Acoustics Research
- Geochemistry and Elemental Analysis
- Geology and Paleoclimatology Research
- Radiation Therapy and Dosimetry
- Radioactive Decay and Measurement Techniques
- Reservoir Engineering and Simulation Methods
- Hydrocarbon exploration and reservoir analysis
- Geophysical and Geoelectrical Methods
- Porphyrin and Phthalocyanine Chemistry
- Molecular Junctions and Nanostructures
- Crystallization and Solubility Studies
- Groundwater flow and contamination studies
- Photochemistry and Electron Transfer Studies
- Nuclear Materials and Properties
University of Lausanne
2015-2024
Institute of Radiation Physics
2003-2024
University Hospital of Lausanne
2022
ETH Zurich
2012
University of Neuchâtel
2011-2012
Federal Office of Public Health
2010
University of Geneva
2010
IFP Énergies nouvelles
1991-2006
Institut Français
1990-2006
The University of Western Australia
2000
Here, we highlight the potential translational benefits of delivering FLASH radiotherapy using ultra-high dose rates (>100 Gy⋅s-1). Compared with conventional dose-rate (CONV; 0.07-0.1 Gy⋅s-1) modalities, showed that did not cause radiation-induced deficits in learning and memory mice. Moreover, 6 months after exposure, CONV caused permanent alterations neurocognitive end points, whereas induce behaviors characteristic anxiety depression impair extinction memory. Mechanistic investigations...
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSynthetic, Structural, and Spectroscopic Studies on Solids Containing Tris(dipicolinato) Rare Earth Anions Transition or Main Group Metal CationsPhilippa A. Brayshaw, Jean-Claude G. Buenzli, Pascal Froidevaux, Jack M. Harrowfield, Yang Kim, Alexander N. SobolevCite this: Inorg. Chem. 1995, 34, 8, 2068–2076Publication Date (Print):April 1, 1995Publication History Published online1 May 2002Published inissue 1 April...
FLASH radiotherapy (FLASH-RT) enables the delivery of ultra-high dose rate (UHDR) radiation to a tumor, increasing mean from 0.1 Gy· s−1of conventional (CONV-RT) 100 s−1and above. Animal models have demonstrated that FLASH-RT preserves healthy tissues while yielding similar tumor growth delay as irradiation. Despite promise FLASH-RT, physico-chemical and biological mechanisms underlying effect are still under investigation. Two mutually non-exclusive hypothesis been proposed could explain...
Migration of radionuclides in soils and their transfer to edible plants are usually estimated using volume-averaged bulk concentrations. However, might not be homogeneously distributed due heterogeneous water flow solute transport. One important cause transport is preferential flow. The aim this study was investigate the spatial distribution soil relation paths assess possible consequences for from plants. We identified a forest by staining them with blue dye, we compared radionuclide...
The ligand 2,6-bis(1′-ethyl-5′-methylbenzimidazol-2′-yl)pyridine (L5) reacts with lanthanide perchlorate in acetonitrile to give the mononuclear triple-helical complexes [Ln(L5)3]3+(Ln = Eu, Gd or Tb). crystal structure of [Eu(L5)3][ClO4]3·4MeCN has been determined, which shows three unco-ordinated anions and an [Eu(L5)3]3+ cation where tridentate ligands are wrapped around a pseudo-C3 axis. co-ordination sphere EuIII may be best described as slightly distorted trigonal-tricapped prism six...
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTComplexes of lanthanoid salts with macrocyclic ligands. 41. Photophysical properties lanthanide dinuclear complexes p-tert-butylcalix[8]areneJean Claude G. Bunzli, Pascal Froidevaux, and Jack M. HarrowfieldCite this: Inorg. Chem. 1993, 32, 15, 3306–3311Publication Date (Print):July 1, 1993Publication History Published online1 May 2002Published inissue 1 July...
Lipid peroxidation, a self-propagating chain reaction that oxydates lipid molecules, contributes to harmful effects of ionizing radiation. A decrease in peroxidation at higher dose rates could play role the FLASH sparing effect. We explored how induced by (> 100 Gy/s) and conventional (CONV, < 0.2 radiation depends on concentration content polyunsaturated fatty acids (PUFA). Additionally, we investigated correlation between main beam parameters characterizing pulsed electron beams, namely...
PreviousNext No AccessSEG Technical Program Expanded Abstracts 2002Insights into migration in the angle domainAuthors: François AudebertPascal FroidevauxHery RakotoarisoaJulie Svay‐LucasFrançois AudebertCGG, Pascal FroidevauxInstitut Français du Pétrole (IFP), Hery RakotoarisoaInstitut and Julie Svay‐LucasInstitut (IFP)https://doi.org/10.1190/1.1816863 SectionsAboutPDF/ePub ToolsAdd to favoritesDownload CitationsTrack CitationsPermissions ShareFacebookTwitterLinked InRedditEmail Permalink:...
FLASH-radiotherapy (FLASH-RT) is an emerging modality that uses ultra-high dose rates of radiation to enable curative doses the tumor while preserving normal tissue. The biological studies showed potential FLASH-RT revolutionize radiotherapy cancer treatments. However, complex basis not fully known yet.
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTEnergy-transfer processes in lanthanide dinuclear complexes with p-tert-butylcalix[8]arene: an example of dipole-dipolar mechanismPascal Froidevaux and Jean Claude G. BuenzliCite this: J. Phys. Chem. 1994, 98, 2, 532–536Publication Date (Print):January 1, 1994Publication History Published online1 May 2002Published inissue 1 January 1994https://pubs.acs.org/doi/10.1021/j100053a030https://doi.org/10.1021/j100053a030research-articleACS...
Abstract. A detailed geochemical analysis was performed on the upper part of Maiolica Formation in Breggia (southern Switzerland) and Capriolo sections (northern Italy). The analysed sediments consist well-bedded, partly siliceous, pelagic carbonate, which lodges numerous thin, dark organic-rich layers. Stable-isotope, phosphorus, organic-carbon a suite redox-sensitive trace-element contents (RSTE: Mo, U, Co, V As) were measured. RSTE pattern Corg:Ptot ratios indicate that most layers...
The reactions of various derivatives chelidamic acid (4-hydroxypyridine-2,6-dicarboxylic acid) with p-tert-butylcalix[4]arene have produced several new mono- and difunctionalized the calixarene in which tridentate functional groups suitable for binding rare earth metal cations been incorporated. Single-crystal X-ray structure determinations performed on two calixarenes found to adopt different "cone" "1,2-alternate" conformations, as well a complex europium(III) phenoxide form...
Abstract Highly selective separation of yttrium (and lanthanides) is interest for the design radiopharmaceuticals, and an efficient method based on ion‐imprinting concept proposed here. The synthesis structural, thermodynamic photophysical characterization complexes trivalent lanthanides with two new vinyl derivatives dipicolinic acid, HL1 L2 , are described. feasibility using ion‐imprinted resins lanthanide demonstrated. were obtained by copolymerization styrene divinylbenzene subsequent...
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTFT-IR and fluorometric investigation of rare earth metal ion solvation. 9. Evidence for a coordination number change along the lanthanide series: FT-IR solvates [Ln(NO3)3(DMSO)n] in anhydrous acetonitrileJean Claude G. Buenzli, Jean Pierre Metabanzoulou, Pascal Froidevaux, Linpei JinCite this: Inorg. Chem. 1990, 29, 19, 3875–3881Publication Date (Print):September 1, 1990Publication History Published online1 May 2002Published inissue 1 September...