Search Results - "Wortmann, G"

Large-scale ocean deoxygenation during the Paleocene-Eocene Thermal Maximum by Yao, Weiqi, Paytan, Adina, Wortmann, Ulrich G

“…The consequences of global warming for fisheries are not well understood, but the geological record demonstrates that carbon cycle perturbations are frequently…”
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Rapid Variability of Seawater Chemistry Over the Past 130 Million Years by Wortmann, Ulrich G., Paytan, Adina

“…Fluid inclusion data suggest that the composition of major elements in seawater changes slowly over geological time scales. This view contrasts with…”
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Equivalence of the boson peak in glasses to the transverse acoustic van Hove singularity in crystals by Chumakov, A I, Monaco, G, Monaco, A, Crichton, W A, Bosak, A, Rüffer, R, Meyer, A, Kargl, F, Comez, L, Fioretto, D, Giefers, H, Roitsch, S, Wortmann, G, Manghnani, M H, Hushur, A, Williams, Q, Balogh, J, Parliński, K, Jochym, P, Piekarz, P

“…We compare the atomic dynamics of the glass to that of the relevant crystal. In the spectra of inelastic scattering, the boson peak of the glass appears higher…”
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Gas hydrate occurrence from pore water chlorinity and downhole logs in a transect across the northern Cascadia margin (Integrated Ocean Drilling Program Expedition 311) by Malinverno, A., Kastner, M., Torres, M. E., Wortmann, U. G.

“…A transect of four sites drilled by Integrated Ocean Drilling Program Expedition 311 provides an ideal data set to investigate the distribution of gas hydrates…”
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Nephrotoxicity Associated with Intravenous Colistin (Colistimethate Sodium) Treatment at a Tertiary Care Medical Center by Hartzell, Joshua D., Neff, Robert, Ake, Julie, Howard, Robin, Olson, Stephen, Paolino, Kristopher, Vishnepolsky, Mark, Weintrob, Amy, Wortmann, Glenn

“…The incidence of acute renal failure, defined by the risk, injury, or failure criteria of the RIFLE criteria (risk, injury, failure, loss, and end-stage kidney…”
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Pleistocene sediment offloading and the global sulfur cycle by Markovic, S, Paytan, A, Wortmann, U. G

“…Quaternary sea level fluctuations have greatly affected the sediment budgets of the continental shelves. Previous studies suggested that this caused a…”
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Optical spectroscopy of Sm3+ ions in phosphate and fluorophosphate glasses by Venkatramu, V., Babu, P., Jayasankar, C.K., Tröster, Th, Sievers, W., Wortmann, G.

“…Spectral characterization of Sm3+-doped phosphate (PKBAS: P2O5+K2O+BaO+Al2O3+Sm2O3) and fluorophosphate (PKBFAS: P2O5+K2O+BaO+BaF2+Al2O3+Sm2O3) glasses through…”
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Optical absorption and photoluminescence studies of Eu3+-doped phosphate and fluorophosphate glasses by SURENDRA BABU, S, BABU, P, JAYASANKAR, C. K, SIEVERS, W, TROSTER, Th, WORTMANN, G

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Multicentennial record of Labrador Sea primary productivity and sea-ice variability archived in coralline algal barium by Chan, P., Halfar, J., Adey, W., Hetzinger, S., Zack, T., Moore, G.W.K., Wortmann, U. G., Williams, B., Hou, A.

“…Accelerated warming and melting of Arctic sea-ice has been associated with significant increases in phytoplankton productivity in recent years. Here, utilizing…”
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Paleo-redox conditions during OAE 2 reflected in Demerara Rise sediment geochemistry (ODP Leg 207) by Hetzel, Almut, Böttcher, Michael E., Wortmann, Ulrich G., Brumsack, Hans-Jürgen

“…Cretaceous black shales deposited under severe oxygen-depletion are carriers of proxy signals for paleoenvironmental conditions. Using high-resolution patterns…”
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A phase IIa, randomized, double-blind, safety, immunogenicity and efficacy trial of Plasmodium falciparum vaccine antigens merozoite surface protein 1 and RTS,S formulated with AS02 adjuvant in healthy, malaria-naïve adults by Cummings, J.F., Polhemus, M.E., Kester, K.E., Ockenhouse, C.F., Gasser, R.A., Coyne, P., Wortmann, G., Nielsen, R.K., Schaecher, K., Holland, C.A., Krzych, U., Tornieporth, N., Soisson, L.A., Angov, E., Heppner, D.G.

“…To improve the efficacy of Plasmodium falciparum malaria vaccine RTS,S/AS02, we conducted a study in 2001 in healthy, malaria-naïve adults administered…”
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Optical properties of Dy3+-doped phosphate and fluorophosphate glasses by SURENDRA BABU, S, BABU, P, JAYASANKAR, C. K, TRÖSTER, Th, SIEVERS, W, WORTMANN, G

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Beautiful Pietàs in South Tyrol (Northern Italy): local or imported works of art? by Dariz, Petra, Wortmann, Ulrich G., Vogl, Jochen, Schmid, Thomas

“…The study, dedicated to Beautiful Pietàs conserved in South Tyrol (Northern Italy), aims to establish, for the first time, a connection between Austroalpine…”
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Kinetics of the disproportionation of SnO by Giefers, H., Porsch, F., Wortmann, G.

“…The kinetics of the disproportionation reaction of tin(II) oxide (SnO) to tin(IV) oxide (SnO 2) and tin metal (Sn) was studied ex-situ and in-situ by X-ray…”
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A new model of the formation of Pennsylvanian iron carbonate concretions hosting exceptional soft-bodied fossils in Mazon Creek, Illinois by Cotroneo, S., Schiffbauer, J. D., McCoy, V. E., Wortmann, U. G., Darroch, S. A. F., Peng, Y., Laflamme, M.

“…Preservation of Pennsylvanian‐aged (307 Ma) soft‐bodied fossils from Mazon Creek, Illinois, USA, is attributed to the formation of siderite concretions, which…”
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A revised seawater sulfate oxygen isotope record for the last 4 Myr by Markovic, Stefan, Paytan, Adina, Li, Hong, Wortmann, Ulrich G.

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Impact of non-random vibrations in Mössbauer rotor experiments testing time dilation by Friedman, Y., Nowik, I., Felner, I., Steiner, J. M., Yudkin, E., Livshitz, S., Wille, H.-C., Wortmann, G., Arogeti, S., Levy, R., Chumakov, A. I., Rüffer, R.

“…All experiments testing time dilation by measuring the spectral shift of a rotating Mössbauer absorber assume that vibrations do not affect the spectral shift…”
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The validity of an experiment testing the influence of acceleration on time dilation using a rotating Mössbauer absorber and a Synchrotron Mössbauer Source by Friedman, Y., Steiner, J. M., Livshitz, S., Perez, E., Nowik, I., Felner, I., Wille, H.-C., Wortmann, G., Efrati, O., Finkelstein, A., Petitgirard, S., Chumakov, A. I., Bessas, D.

“…Three experiments are reviewed, performed (in 2014–2016) at ID18 of ESRF to measure the influence of acceleration on time dilation by measuring the relative…”
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Advances in testing the effect of acceleration on time dilation using a synchrotron Mössbauer source by Friedman, Y., Nowik, I., Felner, I., Steiner, J. M., Yudkin, E., Livshitz, S., Wille, H.-C., Wortmann, G., Chumakov, A. I.

“…New results, additional techniques and know‐how acquired, developed and employed in a recent HC‐1898 experiment at the Nuclear Resonance Beamline ID18 of ESRF…”
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Microbially mediated re-oxidation of sulfide during dissimilatory sulfate reduction by Desulfobacter latus by Eckert, T., Brunner, B., Edwards, E.A., Wortmann, U.G.

“…Enzymatic reactions during dissimilatory sulfate reduction (DSR) are often treated as unidirectional with respect to dissolved sulfide. However, quantitative…”
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