Results 31 to 40 of about 191,364 (306)

Assessing the Validity of Negative High Field Strength-Element Anomalies as a Proxy for Archaean Subduction: Evidence from the Ben Strome Complex, NW Scotland

Geosciences, 2018
The relative depletion of high field strength elements (HFSE), such as Nb, Ta and Ti, on normalised trace-element plots is a geochemical proxy routinely used to fingerprint magmatic processes linked to Phanerozoic subduction.
George L. Guice, Iain McDonald, Hannah S. R. Hughes, Denis M. Schlatter, Kathryn M. Goodenough, John M. MacDonald, John W. Faithfull   +6 more
doaj   +1 more source

Electron flux is a key determinant of uranium isotope fractionation during bacterial reduction

Communications Earth & Environment, 2023
Uranium isotopic signatures in the rock record are utilized as a proxy for past redox conditions on Earth. However, these signatures display significant variability that complicates the interpretation of specific redox conditions. Using the model uranium-
Ashley R. Brown, Margaux Molinas, Yvonne Roebbert, Ataru Sato, Minori Abe, Stefan Weyer, Rizlan Bernier-Latmani   +6 more
doaj   +1 more source

An interpreted language implementation of the Vaganov–Shashkin tree-ring proxy system model

Dendrochronologia, 2020
Abstract We describe the implementation of the Vaganov–Shashkin tree-ring growth model (VSM) in MATLAB. VSM, originally written in Fortran, mimics subdaily and daily resolution processes of cambial growth as a function of soil moisture, air temperature, and insolation, with environmental forcing modeled as the principle of limiting factors.
Kevin J. Anchukaitis, Michael N. Evans, Malcolm K. Hughes, Eugene A. Vaganov   +3 more
openaire   +4 more sources

Interpreter proxy versus healthcare interpreter for administration of patient surveys following arthroplasty: a pilot study.

BMC Medical Research Methodology, 2019
Abstract Background: Clinical quality registries and other systems that conduct routine post-discharge surveillance of patient outcomes following surgery may have difficulty surveying patients who have limited proficiency in the language of the healthcare provider.
Daniel Xue, Timothy Churches, Elizabeth Armstrong, Rajat Mittal, Justine Maree Naylor, Ian Andrew Harris   +5 more
openaire   +3 more sources

Defining a proxy for the interpretation of seismic anisotropy in non‐Newtonian mantle flows [PDF]

Geophysical Research Letters, 2014
AbstractSeismic anisotropy can provide unique insights on convection in the upper mantle. Here we study the link between seismic anisotropy and mantle flow using a non‐Newtonian rheology consistent with deformation by dislocation creep. Using analytical first‐order flow models underneath a ridge and in subduction zones, we find that finite strain ...
Hedjazian, N., Kaminski, E.
openaire   +2 more sources

Crossmodal content binding in information-processing architectures [PDF]

, 2008
Operating in a physical context, an intelligent robot faces two fundamental problems. First, it needs to combine information from its different sensors to form a representation of the environment that is more complete than any of its sensors on its own ...
Hawes, Nicholas, Jacobsson, H, Kruijff, G-J, Wyatt, Jeremy   +3 more
core   +2 more sources

Influence of palaeoweathering on trace metal concentrations and environmental proxies in black shales [PDF]

, 2017
The mineralogical and chemical compositions of Lower Carboniferous (Tournaisian) marine black shale from the Kowala quarry, the Holy Cross Mountains, Poland, were investigated.
Agnieszka Pisarzowska, Algeo, Algeo, Algeo, Allan, Altabet, Altabet, Anbar, Anthony S. Cohen, Arkadiusz Derkowski, Arnold, Arthur, Averbuch, Baker, Barling, Bauersachs, Behar, Berkowski, Berner, Bolton, Bond, Brantley, Brumsack, Chadima, Chen, Clayton, Clayton, Dalai, Derkowski, Dias, Dickson, Duan, Erickson, Faure, Franke, Freudenthal, Frimmel, Georgiev, German, Goldberg, Gong, Grosjean, Hannigan, Hatch, Helz, Huerta-Diaz, Immenhauser, Jaffe, Jan Środoń, Joachimski, Jones, Keller, Kolowith, Kump, Landais, Lehmann, Leszek Marynowski, Lev, Leythaeuser, Liermann, Littke, Liu, Lo, Lyons, Ma, Macko, Macko, Marynowski, Marynowski, Marynowski, Marynowski, Marynowski, Marynowski, McArthur, McCarty, Michał Rakociński, Morford, Mort, Möbius, Nägler, Obreht, Pearce, Pearce, Perkins, Petsch, Peucker-Ehrenbrink, Pollack, Pope, Popp, Popp, Poulson, Pujol, Rachidi, Racka, Racki, Racki, Rafał Szaniawski, Reitz, Rimmer, Rimmer, Riquier, Rooney, Ross, Rudnick, Sachs, Sackett, Saino, Schmitz, Schoepfer, Siebert, Siebert, Slomp, Szaniawski, Szaniawski, Szulczewski, Tamamura, Torsvik, Tribovillard, Tribovillard, Tulipani, Tuttle, Wignall, Wildman, Williams, Yu, Zwing, Śliwiński, Środoń, Środoń   +128 more
core   +1 more source

Digital reconstruction of the Ceprano calvarium (Italy), and implications for its interpretation [PDF]

, 2017
The Ceprano calvarium was discovered in fragments on March 1994 near the town of Ceprano in southern Latium (Italy), embedded in Middle Pleistocene layers. After reconstruction, its morphological features suggests that the specimen belongs to an archaic
Benazzi, Stefano, Bernardini, Federico, Biddittu, Italo, Cerroni, Vittorio, Di Vincenzo, Fabio, Dreossi, Diego, Manzi, Giorgio, Profico, Antonio, Rubini, Mauro, Schlager, Stefan, Tuniz, Claudio, Zaio, Paola   +11 more
core   +2 more sources

The response of ENSO flavors to mid‐Holocene climate: Implications for proxy interpretation [PDF]

Paleoceanography, 2015
AbstractThe response of El Niño–Southern Oscillation (ENSO) to mid‐Holocene boundary conditions remains an open question: paleoclimate proxies and climate model simulations do not agree in the magnitude of the reduction of ENSO variability, while recent proxy evidence from fossil corals from the central Pacific show that the reduction in mid‐Holocene ...
Christina Karamperidou, Pedro N. Di Nezio, Axel Timmermann, Fei‐Fei Jin, Kim M. Cobb   +4 more
openaire   +1 more source

Influence of regional precipitation patterns on stable isotopes in ice cores from the central Himalayas [PDF]

The Cryosphere, 2014
Several ice cores have been recovered from the Dasuopu (DSP) Glacier and the East Rongbuk (ER) Glacier in the central Himalayas since the 1990s. Although the distance between the DSP and the ER ice core drilling sites is only ~ 125 km, the stable ...
H. Pang, S. Hou, S. Kaspari, P. A. Mayewski   +3 more
doaj   +1 more source