Results 41 to 50 of about 728 (154)

Beach Gold and Heavy Mineral Concentrates on Tiwai Spit Gravel Strand Plain, Southland, New Zealand

New Zealand Journal of Geology and Geophysics, Volume 69, Issue 3, September 2026.
The Holocene Tiwai Spit on Foveaux Strait is a 12 km by 2 km gravel‐dominated strand plain, ∼10 m above present sea level. Gravel clasts are dominated by well‐rounded quartz cobbles, pebbles and granules derived from Otago Schist 200 km to the north in evolving river drainage systems during late Cenozoic.
Marshall Palmer, Dave Craw
wiley   +1 more source

Active Corrosion Protection of Sintered AA7075 Aluminum Alloy via Mn Powder Addition

Advanced Engineering Materials, Volume 28, Issue 16, 19 August 2026.
AA7075 containing Mn‐rich particles is fabricated via spark plasma sintering using AA7075 and Mn powders. Corrosion resistance is evaluated through dip‐and‐dry tests using 0.1 M NaCl (pH 6.0), and mass loss decreases with increasing Mn addition. Mn‐rich particles function as a source of Mn ions, and formation of Mn‐accumulation films on Cu‐containing ...
Ko Ebina, Masashi Nishimoto, Izumi Muto
wiley   +1 more source

The process of trace metals enrichment in pyrite under methane seepage in the northern South China Sea

Frontiers in Marine Science
Pyrite is an important indicator of methane seepage. The effects of organic sulfate reduction (OSR) and sulfate-driven anaerobic oxidation of methane (SD-AOM) on the trace metals in pyrite have aroused interest; however, further studies about how these ...
Yanting Ling, Yanting Ling, Xuan Chen, Xuan Chen, Daidai Wu, Daidai Wu, Qinyi Zhang, Qinyi Zhang, Shengyi Mao, Shengyi Mao, Guangrong Jin, Jie Liu, Haizhen Zhai, Chao Yang, Chao Yang, Zheng Su, Zheng Su, Nengyou Wu   +17 more
doaj   +1 more source

Fe‐Modified Co/CeO2 Catalysts for Sustainable Cyclohexane Oxidation

Chemical Engineering &Technology, Volume 49, Issue 8, August 2026.
Bimetallic FexCoy/CeO2 catalysts and the corresponding Co/CeO2 and Fe/CeO2 have been studied for cyclohexane oxidation. In the presence of benzaldehyde, Fe1Co2/CeO2 showed a synergistic effect reaching the highest cyclohexane conversion to KA oil. The presence of Co2+/Fe3+ species is accountable of synergy.
Erisa Fero, Maela Manzoli, Ilaria Barlocco, Luca Braglia, Alberto Villa, Laura Prati, Marta Stucchi   +6 more
wiley   +1 more source

Evidence of bacteriogenic iron and manganese oxyhydroxides in Albian–Cenomanian marine sediments of the Carpathian realm (Poland)

Annales Societatis Geologorum Poloniae, 2015
The Albian and Cenomanian marine sediments of the Silesian and Tatric basins in the Carpathian realm of the Western Tethys contain ferric and ferromanganese oxyhydroxides, visible macroscopically as brown stainings. They coat calcareous bioclasts and mineral clasts, fill pore spaces, or locally form continuous, parallel microlayers, tens of micrometers
Bąk, Marta, Bąk, Krzysztof, Górny, Zbigniew, Stożek, Beata   +3 more
openaire   +3 more sources

Boosting electrocatalytic performance of cobalt iron telluride via vanadium doping for enhanced water and urea electrolysis

InfoMat, Volume 8, Issue 8, August 2026.
This study employs a heteroatom doping strategy to synthesize V‐doped CoFeTe2 catalysts, achieving remarkable HER, OER, UOR, and overall water‐splitting performance. The enhanced activity is attributed to an optimized electronic structure and improved intermediate binding characteristics.
Jagadis Gautam, Seul‐Yi Lee, Soo‐Jin Park   +2 more
wiley   +1 more source

Anaerobic Corrosion Phenomena of Cast Iron and Copper in Artificial Groundwater at Elevated Temperature

Materials and Corrosion, Volume 77, Issue 8, Page 1262-1277, August 2026.
This study examines corrosion of copper and cast iron as candidate canister materials for high‐level radioactive waste disposal in contact with bentonite suspension. The influence of three electrolyte compositions on corrosion behavior under repository‐relevant conditions is assessed.
Louisa Panjiyar, Martin Ende, Christiane Stephan‐Scherb   +2 more
wiley   +1 more source

Properties and Dispersal of a Hydrothermal Plume in a Weakly Stratified Under‐Ice Environment

Geochemistry, Geophysics, Geosystems
The Aurora vent field (82°53.83′N, 6°15.32′W) is located in the weakly stratified Arctic Ocean under perennial ice cover at the western edge of the ultraslow‐spreading Gakkel Ridge, the slowest spreading mid‐ocean ridge on Earth.
Maren Walter, Andreas Türke, Alexander Diehl, Christopher R. German, Christian Mertens, Jonathan Mette, Patrick Monien, Simon Prause, Jürgen Sültenfuß, Wolfgang Bach, Vera Schlindwein, Antje Boetius   +11 more
doaj   +1 more source

Electrochemical Energy Storage and Conversion Applications of Vanadium Nitrides: Recent Developments and Future Perspectives

Small Science, Volume 6, Issue 8, August 2026.
This review underscores the growing significance of vanadium nitride as a potential material for cutting‐edge energy storage and conversion technologies, attributed to its excellent conductivity, tunable electronic properties, and abundant active sites. It thoroughly examines synthesis methods, theoretical perspectives, and electrochemical applications
Warfa Fatima, Sanjana Madapura Suresh, Subhashree Mohapatra, Sang Mun Jeong, Asish K. Kundu, Chandra Sekhar Rout   +5 more
wiley   +1 more source

Hierarchical Porous Nanostructures of Manganese(III) Oxyhydroxide for All‐Solid‐State Flexible Supercapacitors

Energy Technology, 2016
AbstractA three‐dimensional porous MnOOH hierarchical nanostructure grown on flexible carbon fiber fabric is successfully synthesized by a facile hydrothermal method. Monoclinic MnOOH has a crystalline structure layered in the [010] direction. The layered structure facilitates intercalation/deintercalation of Li+ into the interlayer space as well as ...
Shuge Dai, Jianlin Liu, Chuanshen Wang, Xue Wang, Yi Xi, Dapeng Wei, Chenguo Hu   +6 more
openaire   +2 more sources