Results 61 to 70 of about 1,392,562 (335)

Perspectives and Emerging Trends in Plasma Catalysis: Facing the Challenge of Chemical Production Electrification

ChemCatChem, EarlyView.
Plasma catalysis: a key technology to electrify chemical production. Emerging trends and present gaps to pass from a research area to a key technology to develop sustainable decentralized production and face societal challenges. Emerging possibilities in modeling, new trends in reactor and electrode design, combining plasma and electro‐/photocatalysis,
Annemie Bogaerts, Gabriele Centi, Volker Hessel, Evgeny Rebrov   +3 more
wiley   +1 more source

Geological field characteristic of the Kroh Formation in the Upper Perak shales, western Peninsula Malaysia

Journal of Natural Gas Geoscience, 2020
Unconventional hydrocarbon resource has become an interesting field of study; specially for its source rocks which can also be turned into excellent reservoirs to generate and accumulation hydrocarbons. Exploration and production from fine-grained rocks,
Monera Adam Shoieb, Chow Weng Sum, Mohd Suhaili Ismail, Haylay Tsegab Gebretsadik, Owusu Esther   +4 more
doaj  

Reaction kinetics of molybdenum dissolution by hydrogen peroxide in acidic and alkaline solutions using tartaric acid and sodium hydroxide: A semi‐empirical model with rotating disc method

The Canadian Journal of Chemical Engineering, EarlyView.
Molybdenum dissolution in H2O2‐NaOH solution. Abstract Molybdenum is an amphoteric metal that dissolves in both acidic and alkaline solutions. This fundamental study explores a sustainable process for the dissolution of molybdenum, focusing on the reaction kinetics in H2O2, H2O2‐NaOH, and H2O2‐C4H6O6 solutions.
Mahmoud Motasim, Tevfik Agacayak, Yasin Ramazan Eker, Salih Aydogan, Ahmed Abbaker   +4 more
wiley   +1 more source

Tracing subducted black shales in the Lesser Antilles arc using molybdenum isotope ratios

, 2016
Lesser Antilles arc lavas have trace element and radiogenic isotope characteristics indicative of a continent-derived contribution. It is debated vigorously whether this continental signature represents terrigenous sediment that has been subducted with ...
H. Freymuth, T. Elliott, M. V. Soest, S. Skora   +3 more
semanticscholar   +1 more source

Hydrologically sensitive carbonates: Tectonic and groundwater controls on synrift sedimentation in the Late Jurassic–Early Cretaceous of the western Cameros Basin, Northern Spain

The Depositional Record, EarlyView.
Late Jurassic extension, footwall uplift, erosion and karstification of marine Jurassic carbonates in the western Cameros Basin (Spain) resulted in the deposition of ?Upper Kimmeridgian‐Tithonian syntectonic alluvial fan deposits and a series of ?Tithonian to Berriasian distal alluvial marls, palustrine, lacustrine and finally lagoonal carbonates.
Nigel H. Platt, V. Paul Wright
wiley   +1 more source

Mid-Cretaceous paleoenvironmental changes in the western Tethys [PDF]

Climate of the Past, 2018
We present a continuous record of surface water temperature and fertility variations through the latest Barremian–Cenomanian interval (ca. 27 Myr) based on calcareous nannofossil abundances from the western Tethys.
C. Bottini, E. Erba
doaj   +1 more source

Geochemistry and metallogeny of Neoproterozoic pyrite in oxic and anoxic sediments [PDF]

, 2018
The Neoproterozoic Dalradian Supergroup contains widespread diagenetic sulphides present as pyrite. The sulphides occur in both carbonaceous shales and glacial diamictites, that were deposited in relatively reducing and oxidising conditions respectively.
Armstrong, J., Boyce, A.J., Bullock, L., Feldmann, J., Parnell, J., Perez, M.   +5 more
core   +2 more sources

The influence of syn‐depositional compaction on clastic sediment distribution in river‐dominated deltas: A modelling study

The Depositional Record, EarlyView.
The impact of syn‐depositional compaction on the sedimentation distribution and the interdependency between different delta areas related to the sediment budget are not fully understood. Our result shows that compaction creates additional accommodation space that leads to more sedimentation in the delta plain, while limiting sediment delivery towards ...
A. A. Valencia, J. E. A. Storms, H. R. A. Jagers, H. van der Vegt   +3 more
wiley   +1 more source

Trace metal geochemistry of metalliferous black shales in the Mamfe basin (South West Cameroon): Implication for heavy metal assessment

Scientific African, 2022
This study is focused on assessing the contamination levels of heavy metal elements (Cu, Cd, Cr, Ni, and Zn) in black metalliferous shales of the Mamfe basin in South Western Cameroon and identifying the possible pollution sources. Forty (40) black shale
Bokanda Ekoko Eric, Mary Ewokolo Molua Mbua Etutu, Florence Njinto Kwankam, Bisse Salomon Betrant, Ashukem Ethel Nkongho, Bokanda Frankline Besonge, Mokake Fidelis Esue, Ikose Franklin Barake, Ekomane Emile, Philip Fralick   +9 more
doaj  

The role of sea-level change and marine anoxia in the Frasnian-Famennian (Late Devonian) mass extinction [PDF]

, 2008
Johnson et al. (Johnson, J.G., Klapper, G., Sandberg, C.A., 1985. Devonian eustatic fluctuations in Euramerica. Geological Society of America Bulletin 96, 567–587) proposed one of the first explicit links between marine anoxia, transgression and mass ...
Algeo, Algeo, Averbuch, Becker, Becker, Becker, Becker, Belka, Bond, Bond, Bond, Bond, Bratton, Brett, Buggisch, Buggisch, Casier, Casier, Casier, Casier, Chen, Chen, Chen, Chow, Copper, Copper, Copper, Crick, David P.G. Bond, Filer, Geldsetzer, Geldsetzer, Girard, Goddéris, Goodfellow, Hallam, Hallam, Holmes, House, Joachimski, Joachimski, Joachimski, Johnson, Johnson, Kennard, Klapper, Levman, Matyja, Morrow, Muchez, Newell, Orchard, Over, Over, Paproth, Paul B. Wignall, Playford, Playford, Playford, Pujol, Racki, Racki, Racki, Racki, Riquier, Sandberg, Sandberg, Sandberg, Sandberg, Sandberg, Sandberg, Schindler, Southgate, Stephens, Streel, Szulczewski, Szulczewski, Tribovillard, Walliser, Wang, Wignall, Wignall, Ziegler   +82 more
core   +1 more source