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7 results on '"Demol, Gauthier"'

2. Bacterial Eradication by a Low-Energy Pulsed Electron Beam Generator

Author

Da Silva, Charlotte, primary, Lamarche, Camille, additional, Pichereaux, Carole, additional, Mouton-Barbosa, Emmanuelle, additional, Demol, Gauthier, additional, Boisne, Sébastien, additional, Dague, Etienne, additional, Burlet-Schiltz, Odile, additional, Pillet, Flavien, additional, and Rols, Marie-Pierre, additional

Published
2023
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3. Electric breakdown in marble as a function of pressure and temperature conditions

Author

Imbert, Tony, REESS, Thierry, de Ferron, Antoine Silvestre, PECASTAING, Laurent, Demol, Gauthier, Guegan, Baptiste, Laboratoire des Sciences de l'Ingénieur Appliquées à la Mécanique et au génie Electrique (SIAME), and Université de Pau et des Pays de l'Adour (UPPA)

Subjects
[SPI.NRJ]Engineering Sciences [physics]/Electric power, [SPI.GPROC]Engineering Sciences [physics]/Chemical and Process Engineering, ComputingMilieux_MISCELLANEOUS, [SPI.TRON]Engineering Sciences [physics]/Electronics
Abstract

International audience

Published
2019

4. Electrical discharges in water induce spores' DNA damage

Author

Lamarche, Camille, Da Silva, Charlotte, Demol, Gauthier, DAGUE, Etienne, Rols, Marie-Pierre, Pillet, Flavien, Institut de pharmacologie et de biologie structurale (IPBS), Centre National de la Recherche Scientifique (CNRS)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées, Équipe Ingénierie pour les sciences du vivant (LAAS-ELIA), Laboratoire d'analyse et d'architecture des systèmes (LAAS), Université Toulouse - Jean Jaurès (UT2J)-Université Toulouse 1 Capitole (UT1), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Université Toulouse - Jean Jaurès (UT2J)-Université Toulouse 1 Capitole (UT1), Université Fédérale Toulouse Midi-Pyrénées, Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Centre National de la Recherche Scientifique (CNRS), Université Toulouse Capitole (UT Capitole), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Institut National des Sciences Appliquées (INSA)-Université de Toulouse (UT)-Institut National des Sciences Appliquées (INSA)-Université Toulouse - Jean Jaurès (UT2J), Université de Toulouse (UT)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université de Toulouse (UT)-Université Toulouse Capitole (UT Capitole), and Université de Toulouse (UT)

Subjects
Light, Hydrolases, lcsh:Medicine, Bacillus, Pathology and Laboratory Medicine, Biochemistry, Oxidative Damage, Electricity, Microbial Physiology, Medicine and Health Sciences, Bacterial Physiology, lcsh:Science, Bacillus pumilus, Spores, Bacterial, Organic Compounds, Physics, Electromagnetic Radiation, Bacterial Infections, Electrophoresis, Gel, Pulsed-Field, Enzymes, Bacterial Pathogens, Nucleic acids, [SDV.BBM.BP]Life Sciences [q-bio]/Biochemistry, Molecular Biology/Biophysics, Chemistry, [SDV.MP]Life Sciences [q-bio]/Microbiology and Parasitology, Electric Field, Medical Microbiology, Physical Sciences, Pathogens, Water Microbiology, Research Article, DNA, Bacterial, Ultraviolet Rays, Nucleases, Microbiology, Water Purification, Ultraviolet Radiation, DNA-binding proteins, Genetics, Humans, Bacterial Spores, Microbial Pathogens, Bacteria, Organic Chemistry, fungi, lcsh:R, Chemical Compounds, Organisms, Biology and Life Sciences, Proteins, Bacteriology, DNA, Pyrimidines, Enzymology, DNA damage, lcsh:Q, Reactive Oxygen Species, Genome, Bacterial
Abstract

International audience; Bacterial spores are one of the most resilient life forms on earth and are involved in many human diseases, such as infectious diarrhea, fatal paralytic illnesses and respiratory infections. Here, we investigated the mechanisms involved in the death of Bacillus pumilus spores after exposure to electric arcs in water. Cutting-edge microscopies at the nanoscale did not reveal any structural disorganization of spores exposed to electric arcs. This result suggested the absence of physical destruction by a propagating shock wave or an exposure to an electric field. However, Pulsed-Field Gel Electrophoresis (PFGE) revealed genomic DNA damage induced by UV radiation and Reactive Oxygen Species (ROS). UV induced single-strand DNA breaks and thymine dimers while ROS were mainly involved in base exci-sion. Our findings revealed a correlation between DNA damage and the treatment of spores with electrical discharges.

Published
2018

5. Investigation of Switch Designs for the Dynamic Load Current Multiplier Scheme on the SPHYNX Microsecond Linear Transformer Driver

Author

Maysonnave, Thomas, primary, Bayol, Frederic, additional, Demol, Gauthier, additional, d'Almeida, Thierry, additional, Lassalle, Francis, additional, Morell, Alain, additional, Grunenwald, Julien, additional, Chuvatin, Alexander S., additional, Pecastaing, Laurent, additional, and De Ferron, Antoine Silvestre, additional

Published
2014
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7. Physical and chemical microstructural damage in pressed CL-20 explosives.

Author

Demol, Gauthier and Sandusky, Harold W.

Subjects
*EXPLOSIVES, *CRYSTALS, *PROPELLANTS
Abstract

The ultimate utility of CL-20 as an ingredient in explosive and propellant formulations will depend upon the ability to understand the factors that are responsible for batch-to-batch variability with respect to sensitivity, and also to control the sensitivity in formulations within acceptable limits. We used light microscopy of cold-mounted, polished samples to characterize CL-20 at various stages in its life cycle. The evolution of damage from the initial neat crystals of CL-20 to the ready-to-use pressed pellets shows that processing seriously damages the crystals. These crystals are very brittle, and several explanations are proposed. [ABSTRACT FROM AUTHOR]

Published
2000

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