Publications | INSTITUT DE PHYSIQUE DU GLOBE DE PARIS

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176 resultats trouvés
Filtres: Auteur est Calas, G.  [Clear All Filters]
2011
Delaye, J. M., S. Peuget, G. Bureau, and G. Calas. "Molecular dynamics simulation of radiation damage in glasses." Journal of Non-Crystalline Solids 357, no. 14 (2011): 2763-2768.
Cormier, L., G. Calas, and B. Beuneu. "Structural changes between soda-lime silicate glass and melt." Journal of Non-Crystalline Solids 357, no. 3 (2011): 926-931.
2010
Morin, G., G. Ona-Nguema, Y. Wang, F. Juillot, N. Menguy, G. Calas, and G. E. Brown. "Arsenic sequestration and oxidation at the surface of Fe(II)-containing iron (hydr) oxide nanoparticles." Geochimica Et Cosmochimica Acta 74, no. 12 (2010): A726.
Fourdrin, C., T. Allard, I. Monnet, N. Menguy, Marc F. Benedetti, and G. Calas. "Effect of Radiation-Induced Amorphization on Smectite Dissolution." Environmental Science & Technology 44, no. 7 (2010): 2509-2514.
Bordage, A., C. Brouder, E. Balan, D. Cabaret, A. Juhin, M. A. Arrio, P. Sainctavit, G. Calas, and P. Glatzel. "Electronic structure and local environment of substitutional V3+ in grossular garnet Ca3Al2(SiO4)(3): K-edge X-ray absorption spectroscopy and first-principles modeling." American Mineralogist 95, no. 8-9 (2010): 1161-1171.
Wang, Y. H., G. Morin, G. Ona-Nguema, F. Juillot, Francois Guyot, G. Calas, and G. E. Brown. "Evidence for Different Surface Speciation of Arsenite and Arsenate on Green Rust: An EXAFS and XANES Study." Environmental Science & Technology 44, no. 1 (2010): 109-115.
Bergeron, B., L. Galoisy, P. Jollivet, F. Angeli, T. Charpentier, G. Calas, and S. Gin. "First investigations of the influence of IVB elements (Ti, Zr, and Hf) on the chemical durability of soda-lime borosilicate glasses." Journal of Non-Crystalline Solids 356, no. 44-49 (2010): 2315-2322.
Dargaud, O., G. Calas, L. Cormier, L. Galoisy, C. Jousseaume, G. Querel, and M. Newville. "In Situ study of Nucleation of Zirconia in an MgO-Al2O3-SiO2 Glass." Journal of the American Ceramic Society 93, no. 2 (2010): 342-344.
Galoisy, L., J. Feneyrol, A. Juhin, A. Kiratisin, G. Giuliani, and G. Calas. "The origin of coloration in garnets: An optical spectroscopic study." Geochimica Et Cosmochimica Acta 74, no. 12 (2010): A314.
Pelegrin, E., G. Calas, P. Ildefonse, P. Jollivet, and L. Galoisy. "Structural evolution of glass surface during alteration: Application to nuclear waste glasses." Journal of Non-Crystalline Solids 356, no. 44-49 (2010): 2497-2508.
Calas, G., O. Dargaud, L. Galoisy, L. Cormier, N. Menguy, G. Ferlat, and M. Newville. "Structural role of Zr in silicate glasses and melts." Geochimica Et Cosmochimica Acta 74, no. 12 (2010): A136.
Dargaud, O., L. Cormier, N. Menguy, L. Galoisy, G. Calas, S. Papin, G. Querel, and L. Olivi. "Structural role of Zr4+ as a nucleating agent in a MgO-Al2O3-SiO2 glass-ceramics: A combined XAS and HRTEM approach." Journal of Non-Crystalline Solids 356, no. 52-54 (2010): 2928-2934.
Cormier, L., G. Calas, and G. J. Cuello. "Structural study of Ca-Mg and K-Mg mixing in silicate glasses by neutron diffraction." Journal of Non-Crystalline Solids 356, no. 44-49 (2010): 2327-2331.
Juhin, A., G. Morin, E. Elkaim, D. J. Frost, M. Fialin, F. Juillot, and G. Calas. "Structure refinement of a synthetic knorringite, Mg-3(Cr0.8Mg0.1Si0.1)(2)(SiO4)(3)." American Mineralogist 95, no. 1 (2010): 59-63.
Allard, T., E. Morichon, D. Beaufort, and G. Calas. "Tracing past transfers of radionuclides with radiation-induced defects in clay minerals." Geochimica Et Cosmochimica Acta 74, no. 12 (2010): A14.
Ona-Nguema, G., G. Morin, Y. H. Wang, A. L. Foster, F. Juillot, G. Calas, and G. E. Brown. "XANES Evidence for Rapid Arsenic(III) Oxidation at Magnetite and Ferrihydrite Surfaces by Dissolved O-2 via Fe2+-Mediated Reactions." Environmental Science & Technology 44, no. 14 (2010): 5416-5422.
2009
Morin, G., G. Ona-Nguema, Y. Wang, F. Juillot, N. Menguy, G. Calas, and G. E. Brown. "Arsenic(III) polymerization upon sorption on iron(II,III)-(hydr)oxides surfaces: Implications for arsenic mobility under reducing conditions." Geochimica Et Cosmochimica Acta 73, no. 13 (2009): A906.
Ona-Nguema, G., G. Morin, Y. H. Wang, N. Menguy, F. Juillot, L. Olivi, G. Aquilanti, M. Abdelmoula, C. Ruby, J. R. Bargar et al. "Arsenite sequestration at the surface of nano-Fe(OH)(2), ferrous-carbonate hydroxide, and green-rust after bioreduction of arsenic-sorbed lepidocrocite by Shewanella putrefaciens." Geochimica Et Cosmochimica Acta 73, no. 5 (2009): 1359-1381.
Ona-Nguema, G., G. Morin, Y. Wang, F. Juillot, M. Abdelmoula, C. Ruby, Francois Guyot, G. Calas, and G. E. Brown. "Arsenite sequestration by Fe(II)-containing minerals after microbial dissimilatory reduction of arsenic-sorbed lepidocrocite." Geochimica Et Cosmochimica Acta 73, no. 13 (2009): A973.
Morin, G., Y. H. Wang, G. Ona-Nguema, F. Juillot, G. Calas, N. Menguy, E. Aubry, J. R. Bargar, and G. E. Brown. "EXAFS and HRTEM Evidence for As(III)-Containing Surface Precipitates on Nanocrystalline Magnetite: Implications for As Sequestration." Langmuir 25, no. 16 (2009): 9119-9128.
Fourdrin, C., E. Balan, T. Allard, C. Boukari, and G. Calas. "Induced modifications of kaolinite under ionizing radiation: an infrared spectroscopic study." Physics and Chemistry of Minerals 36, no. 5 (2009): 291-299.
Fritsch, E., T. Allard, Marc F. Benedetti, M. Bardy, N. R. do Nascimento, Y. Li, and G. Calas. "Organic complexation and translocation of ferric iron in podzols of the Negro River watershed. Separation of secondary Fe species from Al species." Geochimica Et Cosmochimica Acta 73, no. 7 (2009): 1813-1825.
Cormier, L., G. Calas, and B. Beuneu. "Quantification of boron coordination changes between lithium borate glasses and melts by neutron diffraction." Physics and Chemistry of Glasses-European Journal of Glass Science and Technology Part B 50, no. 3 (2009): 195-200.
Allard, T., and G. Calas. "Radiation effects on clay mineral properties." Applied Clay Science 43, no. 2 (2009): 143-149.
Calas, G., L. Galois, and T. Allard. "Uranium trapping on opals from the Nopal natural analogue: Evidence for complexation on internal surface of opal." Geochimica Et Cosmochimica Acta 73, no. 13 (2009): A185.
2008
Calas, G., Pierre Agrinier, T. Allard, and P. Ildefonse. "Alteration geochemistry of the Nopal I uranium deposit (Sierra Pena Blanca, Mexico), a natural analogue for a radioactive waste repository in volcanic tuffs." Terra Nova 20, no. 3 (2008): 206-212.
Wang, Y. H., G. Morin, G. Ona-Nguema, N. Menguy, F. Juillot, E. Aubry, Francois Guyot, G. Calas, and G. E. Brown. "Arsenite sorption at the magnetite-water interface during aqueous precipitation of magnetite: EXAFS evidence for a new arsenite surface complex." Geochimica Et Cosmochimica Acta 72, no. 11 (2008): 2573-2586.
Ferlat, G., T. Charpentier, A. P. Seitsonen, A. Takada, M. Lazzeri, L. Cormier, G. Calas, and F. Mauri. "Boroxol rings in liquid and vitreous B2O3 from first principles." Physical Review Letters 101, no. 6 (2008).
Cances, B., F. Juillot, G. Morin, V. Laperche, D. Polya, D. J. Vaughan, J. L. Hazemann, O. Proux, G. E. Brown, and G. Calas. "Changes in arsenic speciation through a contaminated soil profile: A XAS based study." Science of the Total Environment 397, no. 1-3 (2008): 178-189.
Morin, G., G. Ona-Nguema, Y. H. Wang, N. Menguy, F. Juillot, O. Proux, Francois Guyot, G. Calas, and G. E. Brown. "Extended X-ray absorption fine structure analysis of arsenite and arsenate adsorption on maghemite." Environmental Science & Technology 42, no. 7 (2008): 2361-2366.
Weigel, C., G. Calas, L. Cormier, L. Galoisy, and G. S. Henderson. "High-resolution Al L-2,L-3-edge x-ray absorption near edge structure spectra of Al-containing crystals and glasses: coordination number and bonding information from edge components." Journal of Physics-Condensed Matter 20, no. 13 (2008).
Weigel, C., L. Cormier, G. Calas, L. Galoisy, and D. T. Bowron. "Intermediate-range order in the silicate network glasses NaFexAl1-xSi2O6 (x=0, 0.5, 0.8, 1): A neutron diffraction and empirical potential structure refinement modeling investigation." Physical Review B 78, no. 6 (2008).
Bureau, G., J. M. Delaye, S. Peuget, and G. Calas. "Molecular dynamics study of structural changes versus deposited energy dose in a sodium borosilicate glass." Nuclear Instruments & Methods in Physics Research Section B-Beam Interactions with Materials and Atoms 266, no. 12-13 (2008): 2707-2710.
Weigel, C., L. Cormier, G. Calas, L. Galoisy, and D. T. Bowron. "Nature and distribution of iron sites in a sodium silicate glass investigated by neutron diffraction and EPSR simulation." Journal of Non-Crystalline Solids 354, no. 52-54 (2008): 5378-5385.
Sorieul, S., T. Allard, L. M. Wang, C. Grambin-Lapeyre, J. Lian, G. Calas, and R. C. Ewing. "Radiation-Stability of Smectite." Environmental Science & Technology 42, no. 22 (2008): 8407-8411.
Juhin, A., G. Calas, D. Cabaret, L. Galoisy, and J. L. Hazemann. "Structural relaxation around substitutional Cr3+ in pyrope garnet." American Mineralogist 93, no. 5-6 (2008): 800-805.
Majerus, O., L. Cormier, Daniel R. Neuville, L. Galoisy, and G. Calas. "The structureOf SiO2-GeO2 glasses: a spectroscopic study." Journal of Non-Crystalline Solids 354, no. 18 (2008): 2004-2009.
Brown, G. E., Alexandre Gelabert, Y. Wang, C. Cismasu, J. Ha, G. Ona-Nguema, K. Benzerara, G. Morin, Y. Yang, F. Juillot et al. "Synchrotron X-ray studies of bacteria-mineral-metal ion interactions." Geochimica Et Cosmochimica Acta 72, no. 12 (2008): A116.
Brown, G. E., Y. Wang, Alexandre Gelabert, J. Ha, C. Cismasu, G. Ona-Nguema, K. Benzerara, J. Miot, N. Menguy, G. Morin et al. "Synchrotron X-ray studies of heavy metal mineral-microbe interactions." Mineralogical Magazine 72, no. 1 (2008): 169-173.
Juhin, A., C. Brouder, M. A. Arrio, D. Cabaret, P. Sainctavit, E. Balan, A. Bordage, A. P. Seitsonen, G. Calas, S. G. Eeckhout et al. "X-ray linear dichroism in cubic compounds: The case of Cr3+ in MgAl2O4." Physical Review B 78, no. 19 (2008).
2007
Cormier, L., G. Ferlat, J. P. Itié, L. Galoisy, G. Calas, and G. Aquilanti. "Amorphous-amorphous transformation at high pressure in gallo-germanosilicate tetrahedral network glasses." Physical Review B 76 (2007).
Ona-Nguema, G., G. Morin, Y. Wang, F. Juillot, Francois Guyot, G. Calas, and G. E. Brown. "As(V)-bearing lepidocrocite and green rust reduction by Shewanella putrefaciens: Evidence for Fe(II) carbonate hydroxide formation." Geochimica Et Cosmochimica Acta 71, no. 15 (2007): A740.
Delattre, S., S. Utsunomiya, R. C. Ewing, J. L. Boeglin, J. J. Braun, E. Balan, and G. Calas. "Dissolution of radiation-damaged zircon in lateritic soils." American Mineralogist 92 (2007): 1978-1989.
Juillot, F., G. Morin, J. L. Hazemann, O. Proux, S. Belin, V. Briois, G. E. Brown, and G. Calas. "EXAFS signatures of structural Zn at trace levels in layered minerals." X-Ray Absorption Fine Structure-Xafs13 882 (2007): 247-249.
Balan, E., F. Fritsch, T. Allard, and G. Calas. "Inheritance vs. neoformation of kaolinite during lateritic soil formation: a case study in the middle Amazon." Clays Clay Miner 55 (2007): 253-260.
Morin, G., F. Juillot, J. Miot, Y. Wang, C. Casiot, B. Cances, O. Proux, G. Calas, and G. E. Brown. "In-situ arsenic speciation in Earth surface environments: Importance of iron oxides." Geochimica Et Cosmochimica Acta 71, no. 15 (2007): A688.
Wang, Y. H., G. Morin, G. Ona-Nguema, N. Menguy, Francois Guyot, J. L. Hazemann, G. Calas, G. E. Brown, and Vc. "Mechanisms of arsenic scavenging by iron (hydr)oxides in anoxic environments." Geochimica Et Cosmochimica Acta 71, no. 15 (2007): A1089.
Calas, G. "Memorial of Hubert Curien, 1924-2005." American Mineralogist 92, no. 2-3 (2007): 448-449.
Koning, E., M. Gehlen, A. M. Flank, G. Calas, and E. Epping. "Rapid post-mortem incorporation of aluminum in diatom frustules: Evidence from chemical and structural analyses." Marine Chemistry 106, no. 1-2 (2007): 208-222.
Allard, G., G. Calas, and P. Ildefonse. "Reconstruction of past U migration in a sedimentary deposit (Coutras, France): implications for a radwaste repository." Chem Geol. 239 (2007): 50-63.

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