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Controls on the Precipitation of Carbonate Minerals Within Marine Sediments
The vast majority of carbonate minerals in modern marine sediments are biogenic, derived from the skeletal remains of organisms living in the ocean. However, carbonate minerals can also precipitate abiotically within marine...
Large mass-independent sulphur isotope anomalies link stratospheric volcanism to the Late Ordovician mass extinction
Abstract: Volcanic eruptions are thought to be a key driver of rapid climate perturbations over geological time, such as global cooling, global warming, and changes in ocean chemistry. However, identification of stratospheric...
TRAGIC NOISE AND RHETORICAL FRIGIDITY IN LYCOPHRON'S <i>ALEXANDRA</i>
Abstract This paper seeks to shed fresh light on the aesthetic and stylistic affiliations of Lycophron's Alexandra , approaching the poem from two distinct but...
Modelling the Effects of Non-Steady State Transport Dynamics on the Sulfur and Oxygen Isotope Composition of Sulfate in Sedimentary Pore Fluids
Angus Fotherby, Harold J. Bradbury, Gilad Antler, Xiaole Sun, Jennifer L. Druhan, Alexandra V. Turchyn
Jan 29, 2021
We present the results of an isotope-enabled reactive transport model of a sediment column undergoing active microbial sulfate reduction to explore the response of the sulfur and oxygen isotopic composition of sulfate under...
Large mass-independent sulphur isotope anomalies link stratospheric volcanism to the Late Ordovician mass extinction.
Volcanic eruptions are thought to be a key driver of rapid climate perturbations over geological time, such as global cooling, global warming, and changes in ocean chemistry. However, identification of stratospheric volcanic...
Intensified microbial sulfate reduction in the deep Dead Sea during the early Holocene Mediterranean sapropel 1 deposition.
Elan J Levy, Camille Thomas, Gilad Antler, Ittai Gavrieli, Alexandra V Turchyn, Vincent Grossi, Daniel Ariztegui, Orit Sivan
Apr 05, 2022
The hypersaline Dead Sea and its sediments are natural laboratories for studying extremophile microorganism habitat response to environmental change. In modern times, increased freshwater runoff to the lake surface waters...
A Looking Forward
Alexandra Gillis
Mar 16, 2022
Alexandra Gillis is a teacher and educational researcher living in the city of Vancouver, on the territorial lands of the Musqueam, Squamish and Tsleil-Waututh peoples, amidst mountains and ocean of Canada’s west coast. She has...
Published by: Memorial University of Newfoundland
Large sulfur isotope fractionation by bacterial sulfide oxidation.
André Pellerin, Gilad Antler, Simon Agner Holm, Alyssa J Findlay, Peter W Crockford, Alexandra V Turchyn, Bo Barker Jørgensen, Kai Finster
Sep 10, 2019
A sulfide-oxidizing microorganism, Desulfurivibrio alkaliphilus (DA), generates a consistent enrichment of sulfur-34 (34 S) in the produced sulfate of +12.5 per mil or greater. This observation challenges the general consensus...
A Looking Forward
Alexandra Gillis
Mar 16, 2022
Alexandra Gillis is a teacher and educational researcher living in the city of Vancouver, on the territorial lands of the Musqueam, Squamish and Tsleil-Waututh peoples, amidst mountains and ocean of Canada’s west coast. She has...
Published by: Memorial University of Newfoundland
Assessing Sedimentary Boundary Layer Calcium Carbonate Precipitation and Dissolution Using the Calcium Isotopic Composition of Pore Fluids
Daniel H. James, Harold J. Bradbury, Gilad Antler, Zvi Steiner, Alec M. Hutchings, Xiaole Sun, Raoul Saar, Mervyn Greaves, Alexandra V. Turchyn
Aug 19, 2021
We present pore fluid geochemistry, including major ion and trace metal concentrations and the isotopic composition of pore fluid calcium and sulfate, from the uppermost meter of sediments from the Gulf of Aqaba (Northeast Red...
Triple oxygen isotope insight into terrestrial pyrite oxidation.
Jordon D Hemingway, Haley Olson, Alexandra V Turchyn, Edward T Tipper, Mike J Bickle, David T Johnston
Apr 14, 2020
The mass-independent minor oxygen isotope compositions (Δ'17O) of atmospheric O2 and [Formula: see text] are primarily regulated by their relative partial pressures, [Formula: see text]/[Formula: see text] Pyrite oxidation...
The Carbon-Sulfur Link in the Remineralization of Organic Carbon in Surface Sediments
Harold J. Bradbury, Alexandra V. Turchyn, Adam Bateson, Gilad Antler, Angus Fotherby, Jennifer L. Druhan, Mervyn Greaves, Duygu S. Sevilgen, David A. Hodell
May 20, 2021
Here we present the carbon isotopic composition of dissolved inorganic carbon (DIC) and the sulfur isotopic composition of sulfate, along with changes in sulfate concentrations, of the pore fluid collected from a series of...
A Role for RAS in V-CRK Transformation
Heidi Greulich
Jan 01, 0001
The v-Crk oncogene product, while possessing no intrinsic tyrosine kinase activity, causes an elevation in levels of cellular phosphotyrosine as it transforms chicken embryo fibroblasts (CEF). Because of this similarity to v-Src...
Published by: Rockefeller University
LITTLE v IN INUKTITUT
Bettina Spreng
Jul 30, 2013
This paper provides an in-depth examination of the distribution of the Antipassive morpheme -si- in Mittimatalik, a dialect of !nuktitut spoken in North Baffin. It is demonstrated that the occurrence of the overt Antipassive...
Published by: Atlantic Provinces Linguistic Association
LITTLE v IN INUKTITUT
Bettina Spreng
Jul 30, 2013
This paper provides an in-depth examination of the distribution of the Antipassive morpheme -si- in Mittimatalik, a dialect of !nuktitut spoken in North Baffin. It is demonstrated that the occurrence of the overt Antipassive...
Published by: Atlantic Provinces Linguistic Association
Structure and metallicity of phase V of hydrogen
B Monserrat, Neil D Drummond, Philip Dalladay-Simpson, Ross T Howie, Pablo Lopez Rios, Eugene Gregoryanz, Chris J Pickard, Richard J Needs
Oct 08, 2018
A new phase V of hydrogen was recently claimed in experiments above 325 GPa and 300 K. Due to the extremely small sample size at such record pressures the measurements were limited to Raman spectroscopy. The experimental data on...
Patel v Mirza
G Virgo
Nov 17, 2016
The decision of the Supreme Court in Patel v Mirza is now the leading case on the application of the defence of illegality to private law claims, which has resolved a controversy among the Justices of the Supreme Court as to...
Novel rhenium(V) nitride complexes with dithiocarbimate ligands
Joanne Perils, Fernando Cortezon-Tamarit, Navaratnarajah Kuganathan, Gabriele Kociok-Köhn, Jonathan R Dilworth, Sofia I. Pascu
Apr 24, 2018
The application of rhenium complexes as therapeutic agents in nuclear medicine has propelled research into the chemistry of these compounds. In our effort to develop and investigate new therapeutic radiopharmaceuticals based...
Amphoteric Colloids. V. The Influence of the Valency of Anions Upon the Physical Properties of Gelatin
Jacques Loeb
Jan 01, 0001
Jacques Loeb. Amphoteric colloids. V. The influence of the valency of anions upon the physical properties of gelatin
Reprinted from J. Gen.Physiol., 1919, 1(5):559-580
Published by: Rockefeller University
Professor Steven V Ley CBE FRS FMedSci
Steven V Ley
Sep 10, 2018
Professor Steven Ley is currently Professor of Chemistry and Director of Research at at the University of Cambridge. He is also a Fellow of Trinity College and was BP 1702 Professor of Chemistry for 21 years. Steve obtained his...
Predicting Woody Plant Diversity as Key Component of Ecosystems
The Mediterranean basin is a global hotspot of biodiversity. Woody plants are key components of ecosystems. This article explores the environmental impacts on woody plant species richness and diversity in maquis and abandoned...
Published by: IGI Global Scientific Publishing
Novel rhenium(V) nitride complexes with dithiocarbimate ligands
Joanne Perils, Fernando Cortezon-Tamarit, Navaratnarajah Kuganathan, Gabriele Kociok-Köhn, Jonathan R Dilworth, Sofia I. Pascu
Apr 24, 2018
The application of rhenium complexes as therapeutic agents in nuclear medicine has propelled research into the chemistry of these compounds. In our effort to develop and investigate new therapeutic radiopharmaceuticals based...
Identifying the Cognitive and Digital Gap in Educational Institutions Using a Technology Characterization Software
This research aims to identify the existing technological and cognitive gaps in educational institutions through the implementation of characterization software. To meet this objective, the study establishes a framework of...
Published by: IGI Global Scientific Publishing
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