Results 61 to 70 of about 3,020 (234)

Isotopic insights into microbial sulfur cycling in oil reservoirs

Frontiers in Microbiology, 2014
Microbial sulfate reduction in oil reservoirs (biosouring) is often associated with secondary oil production where seawater containing high sulfate concentrations (~28 mM) is injected into a reservoir to maintain pressure and displace oil.
Christopher G Hubbard, Yiwei eCheng, Anna eEngelbrektson, Jennifer L Druhan, Li eLi, Jonathan B Ajo-Franklin, John D Coates, John D Coates, Mark E Conrad   +8 more
doaj   +1 more source

Crustal Mercury Addition Into the Giant Jinchuan Ni‐Cu Sulfide Deposit, China, and Its Geological Implications

Geochemistry, Geophysics, Geosystems, 2022
Mercury (Hg) isotopes have shown their power of tracing Hg pollution sources in ecosystems, but their potentials for petrogenetic tracing are yet to be explored.
Lingjian Gao, Ting‐Mao Long, Deyou Sun, Changzhou Deng, Zhendong Tian, Xie‐Yan Song, Runsheng Yin   +6 more
doaj   +1 more source

Combined measurement of hydrogen sulfide content and sulfur isotope in natural gas

Shiyou shiyan dizhi
The natural gas containing hydrogen sulfide in China has great exploration potential, and the origin, source and formation mechanism of hydrogen sulfide are of concern to petroleum workers.
Huamin YANG, Ping WANG, Cheng TAO, Jie WANG, Liangbang MA   +4 more
doaj   +1 more source

SULFUR ISOTOPES GEOCHEMISTRY OF THE BITUMINOUS FATHA EVAPORATES IN FATHA FORMATION, HIT–ABU JIR AREA, WESTERN IRAQ

Iraqi Geological Journal, 2016
Fatha Formation (Middle Miocene) in Hit area, western Iraq was targeted for this study. Pure gypsum, bituminous gypsum and native sulfur were investigated for δ34S, FTIR and SEM to define the historical scenario of the paleo-environment and the ...
Salih Muhammad Awadh, Zinah Saleem Al-Ankaz   +1 more
doaj   +1 more source

Stable sulfur isotope measurements to trace the fate of SO₂ in the Athabasca oil sands region [PDF]

Atmospheric Chemistry and Physics, 2018
Concentrations and δ34S values for SO2 and size-segregated sulfate aerosols were determined for air monitoring station 13 (AMS 13) at Fort MacKay in the Athabasca oil sands region, northeastern Alberta, Canada as part of the Joint Canada-Alberta ...
N. Amiri, R. Ghahremaninezhad, O. Rempillo, T. W. Tokarek, C. A. Odame-Ankrah, C. A. Odame-Ankrah, H. D. Osthoff, A.-L. Norman   +7 more
doaj   +1 more source

Sulfur Cycling During Progressive Burial in Sulfate‐Rich Marine Carbonates

Geochemistry, Geophysics, Geosystems, 2020
The isotopic composition of sulfate in the rock record has been frequently used to track the changes in the Earth's surface environments. By considering isotopic fractionation imparted by microbial sulfate reduction (MSR) and thermochemical sulfate ...
Lei Jiang, Mojtaba Fakhraee, Chunfang Cai, Richard H. Worden   +3 more
doaj   +1 more source

Radiocarbon and Stable Carbon Isotope Constraints on the Propagation of Vent CO2 to Fluid in the Acidic Kueishantao Shallow Water Hydrothermal System

Geochemistry, Geophysics, Geosystems, 2022
We report radiocarbon and stable carbon isotope measurements from vent gas (CO2(g)), dissolved inorganic carbon (DIC), and particulate organic carbon (POC), from two vents of the Kueishantao (KST) shallow‐water hydrothermal system, offshore northeast ...
Shing‐Lin Wang, Yu‐Shih Lin, George S. Burr, Pei‐Ling Wang, Li‐Hung Lin   +4 more
doaj   +1 more source

Paediatric development of radiopharmaceutical imaging agents and radioligand therapeutics

British Journal of Clinical Pharmacology, EarlyView.
Abstract This review focuses on the development of radiopharmaceutical imaging agents and radioligand therapeutics for paediatric use. Nuclear medicine plays an important role in the diagnosis and treatment of various childhood conditions, including cancers, infections and brain disorders.
Justin L. Hay, Amandine Manon, Hunter Stephens, S. Y. Amy Cheung, Bart de Keizer, Erik T. te Beek   +5 more
wiley   +1 more source

Durable Fuel Cell Cathode Enabled by Pt Embedded Nanoscale Carbon Network via a Scalable Process

Carbon Energy, EarlyView.
Platinum nanoparticles embedded nanoscale carbon network (Pt‐e‐Cn) are developed via a scalable flame spray pyrolysis process. Proton exchange membrane fuel cells (PEMFC) employing mesoporous Pt‐e‐Cn cathode electrocatalysts exhibit exceptional durability without compromising performance.
Suriya Venkatesan, Jens Mitzel, Tobias Morawietz, Emmanuelle Boehm‐Courjault, Deven P. Estes, Laure Guétaz, Indro Biswas, Jan Van Herle, Karsten Wegner, Pawel Gazdzicki, Kaspar Andreas Friedrich   +10 more
wiley   +1 more source

Metal-binding amino acid ligands commonly found in metalloproteins differentially fractionate copper isotopes

Scientific Reports
Copper (Cu) is a cofactor in numerous key proteins and, thus, an essential element for life. In biological systems, Cu isotope abundances shift with metabolic and homeostatic state. However, the mechanisms underpinning these isotopic shifts remain poorly
Corday R. Selden, Kathrin Schilling, Linda Godfrey, Nathan Yee   +3 more
doaj   +1 more source