Search Results - "Dynes, J.J"

Precipitation of amorphous CaCO3 (aragonite-like) by cyanobacteria: A STXM study of the influence of EPS on the nucleation process by Obst, M., Dynes, J.J., Lawrence, J.R., Swerhone, G.D.W., Benzerara, K., Karunakaran, C., Kaznatcheev, K., Tyliszczak, T., Hitchcock, A.P.

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Effect of inorganic and organic ligands on the sorption/desorption of arsenate on/from Al–Mg and Fe–Mg layered double hydroxides by Caporale, A.G., Pigna, M., Dynes, J.J., Cozzolino, V., Zhu, J., Violante, A.

“…[Display omitted] ► More arsenate than phosphate was sorbed onto Fe–Mg-LDH, while more phosphate than arsenate was sorbed onto Al–Mg-LDH. ► Each ligand has…”
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Use of nanoprobes to identify iron-silicates in a glass/iron/argillite system in deep geological disposal by Carrière, C., Dillmann, P., Foy, E., Neff, D., Dynes, J.J., Linard, Y., Michau, N., Martin, C.

“…•A glass/iron/claystone system was altered at 50 °C for 4.5 years in Andra’s underground research laboratory in Bure, France.•Creation of a new database of…”
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The role of glucose in abiotic humification pathways as catalyzed by birnessite by Hardie, A.G., Dynes, J.J., Kozak, L.M., Huang, P.M.

“…Sugars are among the most abundant biomolecules in the environment, however, their role in abiotic humification reactions is not yet fully understood. This…”
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Soft X‐ray spectromicroscopy for speciation, quantitation and nano‐eco‐toxicology of nanomaterials by LAWRENCE, J.R., SWERHONE, G.D.W., DYNES, J.J., KORBER, D.R., HITCHCOCK, A.P.

“…Summary There is a critical need for methods that provide simultaneous detection, identification, quantitation and visualization of nanomaterials at their…”
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Soft X-ray microscopy and spectroscopy at the molecular environmental science beamline at the Advanced Light Source by Bluhm, H., Andersson, K., Araki, T., Benzerara, K., Brown, G.E., Dynes, J.J., Ghosal, S., Gilles, M.K., Hansen, H.-Ch, Hemminger, J.C., Hitchcock, A.P., Ketteler, G., Kilcoyne, A.L.D., Kneedler, E., Lawrence, J.R., Leppard, G.G., Majzlam, J., Mun, B.S., Myneni, S.C.B., Nilsson, A., Ogasawara, H., Ogletree, D.F., Pecher, K., Salmeron, M., Shuh, D.K., Tonner, B., Tyliszczak, T., Warwick, T., Yoon, T.H.

“…We present examples of the application of synchrotron-based spectroscopies and microscopies to environmentally relevant samples. The experiments were performed…”
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Biogeochemical activity of microbial biofilms in the water column overlying uranium mine tailings by Bondici, V.F, Khan, N.H, Swerhone, G.D.W, Dynes, J.J, Lawrence, J.R, Yergeau, E, Wolfaardt, G.M, Warner, J, Korber, D.R

“…AIMS: To describe microbial diversity, biofilm composition and biogeochemical potential within biofilms in the water overlying uranium tailings characterized…”
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Archeological slag from Glinet: An example of silicate glass altered in an anoxic iron-rich environment by Michelin, A., Leroy, E., Neff, D., Dynes, J.J., Dillmann, P., Gin, S.

“…Vitreous slag wastes produced by a blast furnace working during the 16th century at the Glinet ironworks site (Normandy, France) are studied as analogs for…”
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Perennially and annually frozen soil carbon differ in their susceptibility to decomposition: Analysis of Subarctic earth hummocks by bioassay, XANES and pyrolysis by Gillespie, A.W., Sanei, H., Diochon, A., Ellert, B.H., Regier, T.Z., Chevrier, D., Dynes, J.J., Tarnocai, C., Gregorich, E.G.

“…Earth hummocks are the most common patterned ground feature in the Subarctic region and subduction of organic matter by cryoturbation (i.e., mixing of soil…”
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Interfacial layer on archaeological mild steel corroded in carbonated anoxic environments studied with coupled micro and nano probes by Leon, Y., Saheb, M., Drouet, E., Neff, D., Foy, E., Leroy, E., Dynes, J.J., Dillmann, P.

“…•Interfacial layer on ferrous archaeological artefacts is studied.•Probes at the micro and nanometer scales (FEG–SEM, Raman, STEM, STXM) are used.•This layer…”
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Effects of fullerene (C60), multi-wall carbon nanotubes (MWCNT), single wall carbon nanotubes (SWCNT) and hydroxyl and carboxyl modified single wall carbon nanotubes on riverine microbial communities by Lawrence, J. R., Waiser, M. J., Swerhone, G. D. W., Roy, J., Tumber, V., Paule, A., Hitchcock, A. P., Dynes, J. J., Korber, D. R.

“…Commercial production of nanoparticles (NP) has created a need for research to support regulation of nanotechnology. In the current study, microbial biofilm…”
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Coordination nature of aluminum (oxy)hydroxides formed under the influence of low molecular weight organic acids and a soil humic acid studied by X-ray absorption spectroscopy by Xu, R.K., Hu, Y.F., Dynes, J.J., Zhao, A.Z., Blyth, R.I.R., Kozak, L.M., Huang, P.M.

“…Organic ligands in the environment hinder the formation of crystalline Al precipitation products by perturbing the hydrolytic and polymeric reactions of Al…”
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Coordination nature of aluminum (oxy)hydroxides formed under the influence of tannic acid studied by X-ray absorption spectroscopy by Hu, Y.F., Xu, R.K., Dynes, J.J., Blyth, R.I.R., Yu, G., Kozak, L.M., Huang, P.M.

“…The effect of biomolecules on the mechanisms of the formation and nature of the transformation products of Al (oxy)hydroxides at the atomic and molecular…”
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Soft X-ray spectromicroscopy of nickel sorption in a natural river biofilm by HITCHCOCK, A.P, DYNES, J.J, LAWRENCE, J.R, OBST, M, SWERHONE, G.D.W, KORBER, D.R, LEPPARD, G.G

“…Scanning transmission X-ray microscopy (STXM) at the C 1s, O 1s, Ni 2p, Ca 2p, Mn 2p, Fe 2p, Mg 1s, Al 1s and Si 1s edges was used to study Ni sorption in a…”
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Precipitation of amorphous CaCO 3 (aragonite-like) by cyanobacteria: A STXM study of the influence of EPS on the nucleation process by Obst, M., Dynes, J.J., Lawrence, J.R., Swerhone, G.D.W., Benzerara, K., Karunakaran, C., Kaznatcheev, K., Tyliszczak, T., Hitchcock, A.P.

“…An amorphous or nanocrystalline calcium carbonate (ACC) phase with aragonite-like short-range order was found to be a transient precursor phase of calcite…”
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Biomolecule-induced carbonate genesis in abiotic formation of humic substances in nature by Hardie, A.G, Dynes, J.J, Kozak, L.M, Huang, P.M

“…Most soil C sequestration research has focused on organic C stabilization, while carbonate precipitation has received little attention. Mineral colloids can…”
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Influence of organic acids on selenite sorption by poorly ordered aluminum hydroxides by Dynes, J.J. (Univ., of Saskatchewan, Saskatoon, SK, Canada.), Huang, P.M

“…Competition between low molecular weight (LMW) organic acids and selenite for sorption site on hydrous metal oxides is an important factor affecting the…”
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Soft X-ray Microscopy and Spectroscopy at the MolecularEnvironmental Science Beamline at the Advanced Light Source by Bluhm, H., Andersson, K., Araki, T., Benzerara, K., Brown, G.E., Dynes, J.J., Ghosal, S., Gilles, M.K., Hansen, H.-Ch, Hemminger, J.C., Hitchcock, A.P., Ketteler, G., Kilcoyne, A.L.D., Kneedler, E., Lawrence,J.R., Leppard, G.G., Majzlam, J., Mun, B.S., Myneni, S.C.B., Nilsson, A., Ogasawara, H., Ogletree, D.F., Pecher, K., Salmeron, M., Shuh, D.K., Tonner, B., Tyliszczak, T., Warwick, T., Yoon, T.H.

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