Results 91 to 100 of about 892,606 (318)

Paleoenvironmental reconstruction and carbon and sulfur isotopes perturbation in black shales of the Paleocene Bolander member in the N’kapa Formation, Douala Sub-basin Cameroon

Geosystems and Geoenvironment
Black shales deposited across the Paleocene Bolander member of the N’kapa Formation are considered important source rock and shale gas reservoirs in the Douala sub-basin.
Ngong Roger Ngia, Elie Fosso Menkem, Alexandrine N’Nanga, Christopher Fuanya, Median Yongye   +4 more
doaj   +1 more source

High sulfur isotope fractionation associated with anaerobic oxidation of methane in a low sulfate, iron rich environment

Frontiers in Earth Science, 2016
Sulfur isotope signatures provide key information for the study of microbial activity in modern systems and the evolution of the Earth surface redox system.
Hannah Sophia Weber, Bo eThamdrup, Kirsten Silvia Habicht, Kirsten Silvia Habicht   +3 more
doaj   +1 more source

Five-S-isotope evidence of two distinct mass-independent sulfur isotope effects and implications for the modern and Archean atmospheres. [PDF]

, 2018
The signature of mass-independent fractionation of quadruple sulfur stable isotopes (S-MIF) in Archean rocks, ice cores, and Martian meteorites provides a unique probe of the oxygen and sulfur cycles in the terrestrial and Martian paleoatmospheres.
Li, Menghan, Lin, Mang, Liu, Lanzhong, Shen, Yanan, Su, Binbin, Tao, Jun, Thiemens, Mark H, Xu, Yilun, Zhang, Xiaolin, Zhang, Zhisheng   +9 more
core  

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

Remote Modulation of Single‐Atom Catalyst Boosts High‐Valent Cobalt–Oxo Species Generation for Water Purification and Detoxification

Advanced Science, EarlyView.
This study develops a phosphorus‐doped cobalt single‐atom catalyst that enhances high‐valent cobalt–oxo species generation for water purification. This atomic‐level tuning boosts the catalyst's activity by 3.5 times, enabling efficient pollutant degradation. A continuous‐flow reactor achieves high, long‐term removal efficiency, producing water with low
Wen‐Min Wang, Zheng‐Wei Yang, De‐Xiu Wu, Wen‐Long Wang, Qian‐Yuan Wu   +4 more
wiley   +1 more source

(Poly)Borylated Species as Modern Reactive Groups toward Unusual Synthetic Applications

Angewandte Chemie, EarlyView.
In this review, we spotlight recent breakthroughs in α‐polyboron‐substituted carbon‐centered intermediates (carbanion, carbocation, radical, and carbene) and polyborylated alkenes. By bridging fundamental reactivity with the application potential of these extraordinary species, we hope this review will serve as a roadmap for harnessing these unique ...
Nadim Eghbarieh, Nicole Hanania, Pinaki Nad, Tipu Alam, Tamir Kish, Ahmad Masarwa   +5 more
wiley   +2 more sources

Analysis of metallogenic material sources and metallogenic epoch of the Xiahulin lead-zinc deposit in inner Mongolia, China

Frontiers in Earth Science
The Xiahulin lead-zinc deposit serves as a classic skarn-type deposit in the Erguna Block of the Greater Khingan Range, containing uncertain metallogenic sources and epochs. The orebodies form complex shapes in the contact zone between granite and Sinian
Mingxin Duan, Mingxin Duan, Mingxin Duan, Guihu Chen, Guihu Chen, Tao Liu, Tao Liu, Liye Liu, Liye Liu, Xidong Zhao, Xidong Zhao   +10 more
doaj   +1 more source

A black shale protolith for gold-tellurium mineralisation in the Dalradian Supergroup (Neoproterozoic) of Britain and Ireland [PDF]

, 2017
The Dalradian Supergroup of Britain and Ireland is mineralised by gold-tellurium vein deposits. The host succession includes carbonaceous, pyritic shales (pelites) which were a source of trace elements, including gold and tellurium.
Armstrong, J., Boyce, A.J., Bullock, L., Feldmann, J., Parnell, J., Perez, M.   +5 more
core   +1 more source

Metabolic Regulation of Dimethylsulfoniopropionate Cleavage and Dimethyl Sulfide Production in Halomonas sp. D47

Advanced Science, EarlyView.
Dimethylsulfoniopropionate (DMSP) is a major marine organosulfur compound central to climate‐relevant dimethyl sulfide (DMS) production. In Halomonas sp. D47, DMSP catabolism is revealed to be coordinated by two transcriptional regulators, AcuR and AcuZ, which control gene expression by sensing DMSP and its metabolites.
Li‐Yuan Zheng, Wen‐Xin Jiang, Xiao‐Meng Sun, Li Liu, Zhao‐Jie Teng, Hou‐Qi Wang, Wen‐Jing Zhu, Chang Ge, Qi‐Long Qin, Ning‐Hua Liu, Hai‐Yan Cao, Hui‐Hui Fu, Chun‐Yang Li, Jonathan D. Todd, Xiu‐Lan Chen, Yu‐Zhong Zhang, Peng Wang   +16 more
wiley   +1 more source

Biosynthesis of Kaitocephalin: A Neuroprotective Natural Product Featuring a Peptide‐Like yet Nonpeptidic Scaffold

Angewandte Chemie, EarlyView.
Kaitocephalin (KCP) is a neuroprotective fungal metabolite with a unique scaffold of amino acids linked via C–C bonds. Genome‐transcriptome analyses identified its biosynthetic gene cluster (kpb cluster) in Eupenicillium shearii. LC‐MS/MS profiling identified four new KCP‐related compounds.
Yukari Maeno, Taro Shiraishi, Naoya Saito, Jun‐ichi Maruyama, Kazuo Shin‐ya, Tomohisa Kuzuyama   +5 more
wiley   +2 more sources