Search Results - "Guyot, François"

Formic Acid Synthesis in a Water–Mineral System: Major Role of the Interface by Laporte, Sara, Pietrucci, Fabio, Guyot, François, Saitta, A. Marco

“…Mineral surfaces are known for their catalytic properties, as they have lower kinetic barriers to reactions and modify chemical equilibria. Using ab initio…”
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The Dissolution Anisotropy of Pyroxenes: Experimental Validation of a Stochastic Dissolution Model Based on Enstatite Dissolution by Bouissonnié, Arnaud, Daval, Damien, Guyot, François, Ackerer, Philippe

“…The understanding of the atomic-scale mechanisms controlling silicate dissolution represents a necessary prerequisite for the success of upscaling exercises…”
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Solving Controversies on the Iron Phase Diagram Under High Pressure by Morard, Guillaume, Boccato, Silvia, Rosa, Angelika D., Anzellini, Simone, Miozzi, Francesca, Henry, Laura, Garbarino, Gaston, Mezouar, Mohamed, Harmand, Marion, Guyot, François, Boulard, Eglantine, Kantor, Innokenty, Irifune, Tetsuo, Torchio, Raffaella

“…As the main constituent of planetary cores, pure iron phase diagram under high pressure and temperature is of fundamental importance in geophysics and…”
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Intracellular amorphous Ca-carbonate and magnetite biomineralization by a magnetotactic bacterium affiliated to the Alphaproteobacteria by Monteil, Caroline L., Benzerara, Karim, Menguy, Nicolas, Bidaud, Cécile C., Michot-Achdjian, Emmanuel, Bolzoni, Romain, Mathon, François P., Coutaud, Margot, Alonso, Béatrice, Garau, Camille, Jézéquel, Didier, Viollier, Eric, Ginet, Nicolas, Floriani, Magali, Swaraj, Sufal, Sachse, Martin, Busigny, Vincent, Duprat, Elodie, Guyot, François, Lefevre, Christopher T.

“…Bacteria synthesize a wide range of intracellular submicrometer-sized inorganic precipitates of diverse chemical compositions and structures, called…”
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Chemical signature of magnetotactic bacteria by Amor, Matthieu, Busigny, Vincent, Durand-Dubief, Mickaël, Tharaud, Mickaël, Ona-Nguema, Georges, Gélabert, Alexandre, Alphandéry, Edouard, Menguy, Nicolas, Benedetti, Marc F., Chebbi, Imène, Guyot, François

“…Significance Magnetite precipitates through either abiotic or biotic processes. Magnetotactic bacteria synthesize nanosized magnetite intracellularly and may…”
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Electronic Transitions in Perovskite: Possible Nonconvecting Layers in the Lower Mantle by Badro, James, Rueff, Jean-Pascal, Vankó, György, Monaco, Giulio, Fiquet, Guillaume, Guyot, François

“…We measured the spin state of iron in magnesium silicate perovskite$(Mg_{0.9},Fe_{0.1})SiO_3$at high pressure and found two electronic transitions occurring at…”
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Melting properties by X-ray absorption spectroscopy: common signatures in binary Fe–C, Fe–O, Fe–S and Fe–Si systems by Boccato, Silvia, Torchio, Raffaella, Anzellini, Simone, Boulard, Eglantine, Guyot, François, Irifune, Tetsuo, Harmand, Marion, Kantor, Innokenty, Miozzi, Francesca, Parisiades, Paraskevas, Rosa, Angelika D., Antonangeli, Daniele, Morard, Guillaume

“…X-ray absorption spectroscopy (XAS) is a widely used technique to probe the local environment around specific atomic species. Applied to samples under extreme…”
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Iron biomineralization by anaerobic neutrophilic iron-oxidizing bacteria by Miot, Jennyfer, Benzerara, Karim, Morin, Guillaume, Kappler, Andreas, Bernard, Sylvain, Obst, Martin, Férard, Céline, Skouri-Panet, Fériel, Guigner, Jean-Michel, Posth, Nicole, Galvez, Matthieu, Brown, Gordon E., Guyot, François

“…Minerals formed by bio-oxidation of ferrous iron (Fe(II)) at neutral pH, their association with bacterial ultrastructures as well as their impact on the…”
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Enhanced antitumor efficacy of biocompatible magnetosomes for the magnetic hyperthermia treatment of glioblastoma by Le Fèvre, Raphaël, Durand-Dubief, Mickaël, Chebbi, Imène, Mandawala, Chalani, Lagroix, France, Valet, Jean-Pierre, Idbaih, Ahmed, Adam, Clovis, Delattre, Jean-Yves, Schmitt, Charlotte, Maake, Caroline, Guyot, François, Alphandéry, Edouard

“…In this study, biologically synthesized iron oxide nanoparticles, called magnetosomes, are made fully biocompatible by removing potentially toxic organic…”
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Mass-dependent and -independent signature of Fe isotopes in magnetotactic bacteria by Amor, Matthieu, Busigny, Vincent, Louvat, Pascale, Gélabert, Alexandre, Cartigny, Pierre, Durand-Dubief, Mickaël, Ona-Nguema, Georges, Alphandéry, Edouard, Chebbi, Imène, Guyot, François

“…Magnetotactic bacteria perform biomineralization of intracellular magnetite (Fe₃O₄) nanoparticles. Although they may be among the earliest microorganisms…”
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Iron Partitioning in Earth's Mantle: Toward a Deep Lower Mantle Discontinuity by Badro, James, Fiquet, Guillaume, Guyot, François, Rueff, Jean-Pascal, Struzhkin, Viktor V., Vankó, György, Monaco, Giulio

“…We measured the spin state of iron in ferropericlase$(Mg_{0.83}Fe_{0.17})O$at high pressure and found a high-spin to low-spin transition occurring in the 60-…”
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Influence of amorphous silica layer formation on the dissolution rate of olivine at 90°C and elevated pCO2 by Daval, Damien, Sissmann, Olivier, Menguy, Nicolas, Saldi, Giuseppe D., Guyot, François, Martinez, Isabelle, Corvisier, Jérôme, Garcia, Bruno, Machouk, Imène, Knauss, Kevin G., Hellmann, Roland

“…For mitigating against rising levels of atmospheric CO2, carbonation of M2+-bearing silicates has been proposed as a possible option for sequestering CO2 over…”
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Biocompatible coated magnetosome minerals with various organization and cellular interaction properties induce cytotoxicity towards RG-2 and GL-261 glioma cells in the presence of an alternating magnetic field by Hamdous, Yasmina, Chebbi, Imène, Mandawala, Chalani, Le Fèvre, Raphael, Guyot, François, Seksek, Olivier, Alphandéry, Edouard

“…Biologics magnetics nanoparticles, magnetosomes, attract attention because of their magnetic characteristics and potential applications. The aim of the present…”
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Contrasting isotopic signatures between anthropogenic and geogenic Zn and evidence for post-depositional fractionation processes in smelter-impacted soils from Northern France by Juillot, Farid, Maréchal, Chloe, Morin, Guillaume, Jouvin, Delphine, Cacaly, Sylvain, Telouk, Philipe, Benedetti, Marc F., Ildefonse, Philippe, Sutton, Steve, Guyot, François, Brown, Gordon E.

“…Zinc isotopes have been studied along two smelter-impacted soil profiles sampled near one of the largest Pb and Zn processing plants in Europe located in…”
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Towards a dynamic compression facility at the ESRF by Sévelin-Radiguet, Nicolas, Torchio, Raffaella, Berruyer, Gilles, Gonzalez, Hervé, Pasternak, Sébastien, Perrin, Florian, Occelli, Florent, Pépin, Charles, Sollier, Arnaud, Kraus, Dominik, Schuster, Anja, Voigt, Katja, Zhang, Min, Amouretti, Alexis, Boury, Antoine, Fiquet, Guillaume, Guyot, François, Harmand, Marion, Borri, Marcello, Groves, Janet, Helsby, William, Branly, Stéphane, Norby, James, Pascarelli, Sakura, Mathon, Olivier

“…Results of the 2018 commissioning and experimental campaigns of the new High Power Laser Facility on the Energy‐dispersive X‐ray Absorption Spectroscopy…”
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Correction to “Nanoprobe Synthesized by Magnetotactic Bacteria, Detecting Fluorescence Variations under Dissociation of Rhodamine B from Magnetosomes following Temperature, pH Changes, or the Application of Radiation” by Alphandéry, Edouard, Abi Haidar, Darine, Seksek, Olivier, Thoreau, Maxime, Trautmann, Alain, Bercovici, Nadege, Gazeau, Florence, Guyot, François, Chebbi, Imène

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Key Role of Alphaproteobacteria and Cyanobacteria in the Formation of Stromatolites of Lake Dziani Dzaha (Mayotte, Western Indian Ocean) by Gérard, Emmanuelle, De Goeyse, Siham, Hugoni, Mylène, Agogué, Hélène, Richard, Laurent, Milesi, Vincent, Guyot, François, Lecourt, Léna, Borensztajn, Stephan, Joseph, Marie-Béatrice, Leclerc, Thomas, Sarazin, Gérard, Jézéquel, Didier, Leboulanger, Christophe, Ader, Magali

“…Lake Dziani Dzaha is a thalassohaline tropical crater lake located on the "Petite Terre" Island of Mayotte (Comoros archipelago, Western Indian Ocean)…”
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Dynamic X-ray diffraction observation of shocked solid iron up to 170 GPa by Denoeud, Adrien, Ozaki, Norimasa, Benuzzi-Mounaix, Alessandra, Uranishi, Hiroyuki, Kondo, Yoshihiko, Kodama, Ryosuke, Brambrink, Erik, Ravasio, Alessandra, Bocoum, Maimouna, Boudenne, Jean-Michel, Harmand, Marion, Guyot, François, Mazevet, Stephane, Riley, David, Makita, Mikako, Sano, Takayoshi, Sakawa, Youichi, Inubushi, Yuichi, Gregori, Gianluca, Koenig, Michel, Morard, Guillaume

“…Investigation of the iron phase diagram under high pressure and temperature is crucial for the determination of the composition of the cores of rocky planets…”
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Aqueous alteration and bioalteration of a synthetic enstatite chondrite by AVRIL, Caroline, MALAVERGNE, Valérie, VAN HULLEBUSCH, Eric D., BRUNET, Fabrice, BORENSZTAJN, Stephan, LABANOWSKI, Jérôme, HENNET, Louis, GUYOT, François

“…Understanding the transformations of highly reduced enstatite chondrites (EC) in terrestrial environments, even on very short timescales, is important to make…”
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Arsenite sorption at the magnetite–water interface during aqueous precipitation of magnetite: EXAFS evidence for a new arsenite surface complex by Wang, Yuheng, Morin, Guillaume, Ona-Nguema, Georges, Menguy, Nicolas, Juillot, Farid, Aubry, Emmanuel, Guyot, François, Calas, Georges, Brown, Gordon E.

“…The interaction of aqueous As(III) with magnetite during its precipitation from aqueous solution at neutral pH has been studied as a function of initial As/Fe…”
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