Results 81 to 90 of about 68,774 (280)

Precise determination of equilibrium sulfur isotope effects during volatilization and deprotonation of dissolved H_2S [PDF]

, 2019
Sulfide (H_2S, HS^−, and S^(2−)) is ubiquitous in marine porewaters as a result of microbial sulfate reduction, constituting the reductive end of the biogeochemical sulfur cycle.
Adkins, Jess F., Orphan, Victoria J., Sessions, Alex L., Sim, Min Sub   +3 more
core  

Discovery of the Isotopes with 11 <= Z <= 19

, 2011
A total of 194 isotopes with 11 $\le$ Z $\le$ 19 have been identified to date. The discovery of these isotopes which includes the observation of unbound nuclei, is discussed.
Ajzenberg-Selove, Alvarez, Amaldi, Andersen, Artukh, Aston, Aston, Aston, Aston, Aston, Aston, Aston, Aston, Audi, Auger, Barton, Baumann, Benenson, Benenson, Benenson, Berg, Bethe, Birge, Boley, Bradner, Brosi, Butler, Cable, Cable, Cerny, Churchill, Cohen, Corson, Creutz, Curie, Curie, Dempster, Dempster, Détraz, Eckardt, Ellis, Fahlenbrach, Fermi, Frisch, Frisch, Ginepro, Glass, Goriely, Grahame, Grimm, Grévy, Guillemaud-Mueller, Guillemaud-Mueller, Hagberg, Hansen, Hardy, Hardy, Haslam, Hevesy, Hoag, Hollander, Huber, Huber, Huber, Huck, Hurst, Jelley, Joliot, Kashy, Katcoff, Kennedy, King, Klapisch, Klapisch, Klapisch, Kuerti, Kuroyanagi, Langevin, Langevin, Langevin, Larson, Lederer, Lewitowicz, Lindner, Lindner, Livingood, Lukyanov, M. Thoennessen, MacFarlane, Mantica, Marinov, McPherson, Meye, Miller, Morinaga, Morinaga, Morris, Mukha, Mulliken, Nethaway, Nier, Nier, Notani, Nurmia, Overstreet, Pollard, Pool, Reeder, Robertson, Robinson, Robinson, Robinson, Saint-Laurent, Sakurai, Sakurai, Seaborg, Seaborg, Sheline, Sheline, Snell, Strominger, Stähelin, Sun, Symons, Tarasov, Tarasov, Thoennessen, Turkevich, Tyren, Van Voorhis, Walke, Weimer, Westfall, White, White, Yaffe, Zeeman, Zerguerras, Zünti, Äystö   +139 more
core   +1 more source

Inhibition of microbial sulfate reduction in a flow-through column system by (per)chlorate treatment. [PDF]

, 2014
Microbial sulfate reduction is a primary cause of oil reservoir souring. Here we show that amendment with chlorate or perchlorate [collectively (per)chlorate] potentially resolves this issue. Triplicate packed columns inoculated with marine sediment were
Anderson, Gary, Boussina, Aaron, Carlson, Hans K, Coates, John D, Conrad, Mark E, Engelbrektson, Anna, Hubbard, Christopher G, Jin, Yong T, Piceno, Yvette M, Tom, Lauren M, Wong, Hayden   +10 more
core   +5 more sources

Sulfur isotopes from the Paleoproterozoic Francevillian Basin record multigenerational pyrite formation, not depositional conditions

Communications Earth & Environment
Bulk-rock sulfur isotope data from pyrite in the ~2.1 billion-year sedimentary rocks of the Francevillian Basin, Gabon, have underpinned ideas about initial oxygenation of Earth’s surface environments and eukaryote evolution.
Kärt Paiste, David A. Fike, Karen Bakakas Mayika, Mathieu Moussavou, Aivo Lepland, Anthony R. Prave, Tomohiko Sato, Yuichiro Ueno, Yusuke Sawaki, Jocelyn A. Richardson, Robert S. Wood, Clive Jones, Samuel M. Webb, Kalle Kirsimäe   +13 more
doaj   +1 more source

Isotopic Evidence for Multiple Recycled Sulfur Reservoirs in the Mangaia Mantle Plume

Geochemistry, Geophysics, Geosystems, 2020
Mangaia, an ocean island in the Cook‐Austral volcanic chain, is the type locality for the HIMU mantle reservoir and has also been shown to exhibit evidence for recycled sulfur with anomalous δ34S and Δ33S that has been attributed an Archean origin.
J. W. Dottin III, J. Labidi, M. G. Jackson, J. Woodhead, J. Farquhar   +4 more
doaj   +1 more source

Hydrochemical determination of source water contributions to Lake Lungo and Lake Ripasottile (central Italy) [PDF]

, 2016
Lake Lungo and Lake Ripasottile are two shallow (4-5 m) lakes located in the Rieti Basin, central Italy, that have been described previously as surface outcroppings of the groundwater table.
Archer, Claire, Kreamer, David, Mensing, Scott, Noble, Paula, Petitta, Marco, Piovesan, Gianluca, Piscopo, Vincenzo, Poulson, Simon R., Rosen, Michael R.   +8 more
core   +3 more sources

Multiple Sulfur Isotope Records of the 3.22 Ga Moodies Group, Barberton Greenstone Belt

Geosciences, 2020
The Moodies Group, the uppermost unit in the Barberton Greenstone Belt (BGB) in South Africa, is a ~3.7-km-thick coarse clastic succession accumulated on terrestrial-to-shallow marine settings at around 3.22 Ga.
Masafumi Saitoh, Sami Nabhan, Christophe Thomazo, Nicolas Olivier, Jean-François Moyen, Yuichiro Ueno, Johanna Marin-Carbonne   +6 more
doaj   +1 more source

Atmospheric sulfur is recycled to the crystalline continental crust during supercontinent formation

Nature Communications, 2018
The long-term evolution of the sulfur budget in the lithosphere is poorly constrained. Here, using mass independent isotope fractionation as an indelible tracer, the authors track the pathway of sulfur from the Earth’s surface to punctuated episodes of ...
Crystal LaFlamme, Marco L. Fiorentini, Mark D. Lindsay, Thi Hao Bui   +3 more
doaj   +1 more source

Deconstructing the Dissimilatory Sulfate Reduction Pathway: Isotope Fractionation of a Mutant Unable of Growth on Sulfate

Frontiers in Microbiology, 2018
The sulfur isotope record provides key insight into the history of Earth's redox conditions. A detailed understanding of the metabolisms driving this cycle, and specifically microbial sulfate reduction (MSR), is crucial for accurate paleoenvironmental ...
Emma Bertran, William D. Leavitt, William D. Leavitt, Andre Pellerin, Grant M. Zane, Judy D. Wall, Itay Halevy, Boswell A. Wing, David T. Johnston   +8 more
doaj   +1 more source

Isotope shift on the chlorine electron affinity revisited by an MCHF/CI approach

, 2013
Today, the electron affinity is experimentally well known for most of the elements and is a useful guideline for developing ab initio computational methods.
Carette, Thomas, Godefroid, Michel
core   +1 more source