Results 121 to 130 of about 18,367 (247)

Mechanochemical activation of mixed raw clays: Influence of grinding parameters on process efficiency and physicochemical properties

ce/papers, Volume 9, Issue 6, Page 1496-1508, October 2026.
Abstract Natural heterogeneous clays offer potential as alternative supplementary cementitious materials (SCMs) for CO2‐reduced binder systems due to their pozzolanic properties and global availability. Mechanochemical activation (MCA) has emerged as an alternative method to enhance the reactivity particularly of mixed 2:1 clays. However, the influence
Roya Zeidler, Frank Schmidt‐Döhl
wiley   +1 more source

Impact of Sahelian Climate Variables on Solar Photovoltaic Output

Energy Science &Engineering, Volume 14, Issue 10, Page 4891-4909, October 2026.
ABSTRACT Solar photovoltaic (PV) energy is a critical pathway for advancing the energy transition in the Sahel. However, PV module performance in this region is strongly constrained by extreme climatic conditions. This study investigates the effects of (1) wind speed, (2) relative humidity, (3) temperature, (4) dust deposition, and (5) solar irradiance
Koraou Nomaou Abdou‐Rahimou, Adamou Hassane, Ayouba Mahamane Abdoulkadri, Alio Sanda Mahamadou Djibrilla, Moumouni Yacouba, Adamou Rabani   +5 more
wiley   +1 more source

Clay and smectite analysis of sediment core CRP-2A

, 2000
Sediments of the CRP-2/2A drill core from the continental shelf of McMurdo Sound in Ross Sea, Pacific sector of the Southern Ocean, have been investigated for their clay mineral assemblages, especially for the smectite contents and smectite ...
Ehrmann, Werner
core   +1 more source

β‐Cyclodextrin Immobilized in Geophagic Clay Sheets for the Absorption of Dyes From Wastewater Using a Fixed‐Bed Method

Water Environment Research, Volume 98, Issue 10, October 2026.
β‐Cyclodextrin‐functionalized geophagic clay was applied in a fixed‐bed column for the removal of rhodamine B (RhB) and methyl orange (MO). RhB interacts via electrostatic attraction and hydrogen bonding, while MO undergoes cavity inclusion complexation and hydrogen bonding within the βCD structure.
Nomcebo P. Khumalo, Mukuna P. Mubiayi, Bhekie B. Mamba   +2 more
wiley   +1 more source

Mapping the Western Jezero Crater Rim From Orbit: Connections to Regional Geologic Units and Context for Exploration by the Mars 2020 Perseverance Rover

Journal of Geophysical Research: Planets, Volume 131, Issue 10, October 2026.
Abstract The Mars 2020 rover is currently traversing the western rim of Jezero, a Middle to Late Noachian‐aged crater formed by an impactor that struck the northwest edge of Isidis Planitia (hereafter referred to as the Isidis basin) on Mars. Previous studies suggest that pre‐Isidis basin and Noachian outcrops are preserved throughout this region ...
M. C. Deahn, B. Horgan, F. Calef III, J. Schroeder, K. M. Stack, N. R. Williams, S. Alwmark, C. C. Bedford, J. Bell, M. Bramble, E. Cloutis, L. Crumpler, T. Del Sesto, D. T. Flannery, B. Garczynski, E. Graser, S. Gwizd, L. Ives, L. Kah, A. Klidaras, C. Lesh, H. T. Manelski, L. E. Mayhew, C. Miller, M. Nachon, C. Quantin‐Nataf, N. Randazzo, E. Ravanis, P. Russell, J. I. Simon, J. R. C. Voigt   +30 more
wiley   +1 more source

Geochemistry of Ni in the Cretaceous-Tertiary succession Fiskeler (Fish Clay) at Stevns Klint (Denmark): cheto-smectite of the black marl [PDF]

Journal of the Serbian Chemical Society, 2006
The Cretaceus-Tertiary (KT) boundary at Stevns Klint (the Højerup succession), Fiskeler, consists of a thin red clay layer overlain by a thick one of black marl. These two layers are made up mainly from cheto-smectite and biogenic calcite. The black marl
PAVLE I. PREMOVIC, BRATISLAV Z. TODOROVIC, NIKOLA D. NIKOLIC, MIRJANA S. PAVLOVI, DRAGAN M. DJORDJEVIC, DEJAN T. DULANOVIC   +5 more
doaj  

RHEOLOGICAL PROPERTIES OF PALYGORSKITE-SMECTITE SUSPENSIONS FROM THE VENTZIA BASIN, W. MACEDONIA, GREECE

, 2017
In this contribution we examine the rheological properties of palygorskite rich clays from the Ventzia Basin, W. Macedonia, Greece. The clays consist of palygorskite and/or dioctahedral Fe-rich smectite (nontronite) and quartz as main components, and ...
G.E Christidis, P. Katsiki, A. Pratikakis, G. Kacandes   +3 more
core   +1 more source

NH4‐Smectites as Potential Precursors of Nitrogen Compounds Evolved During Analyses by the Sample Analysis at Mars (SAM) Instrument on the Curiosity Rover

Journal of Geophysical Research: Planets, Volume 131, Issue 10, October 2026.
Abstract Ammonium (NH4+) in the interlayer space of phyllosilicates has been proposed as a potential but underexplored nitrogen reservoir on Mars. We synthesized ammonium‐exchanged smectites (montmorillonite SWy‐2 and nontronite NAu‐2) and analyzed them, both as pure phases and in mixtures containing five or 20 wt.% magnesium (Mg) perchlorate, under ...
S. Andrejkovičová, A. C. McAdam, J. C. Stern, M. Millan, R. Navarro‐González, C. A. Knudson, S. T. Wieman, E. B. Rampe, D. W. Ming, C. N. Achilles, S. S. Johnson, F. Rocha, C. A. Malespin, P. R. Mahaffy   +13 more
wiley   +1 more source

RHEOLOGICAL PROPERTIES OF PALYGORSKITE-SMECTITE SUSPENSIONS FROM THE VENTZIA BASIN, W. MACEDONIA, GREECE [PDF]

, 2010
In this contribution we examine the rheological properties of palygorskite rich clays from the Ventzia Basin, W. Macedonia, Greece. The clays consist of palygorskite and/or dioctahedral Fe-rich smectite (nontronite) and quartz as main components, and ...
Christidis, G.E, Pratikakis, A., Kacandes, G., Katsiki, P.   +3 more
core  

Geochemical Modeling of Black Smoker Fluid Formation at the TAG Hydrothermal Vent Field

Geochemistry, Geophysics, Geosystems, Volume 27, Issue 10, October 2026.
Abstract Seafloor hydrothermal systems facilitate energy transport and chemical exchange between oceanic crust and seawater. The chemistry of hydrothermal fluids is attained through reactions with basaltic rock during fluid recharge, but the spatio‐temporal scales of fluid‐rock‐interaction at depth are difficult to constrain.
Jasper M. Engelmann, Alexander P. Gysi, Lars Rüpke   +2 more
wiley   +1 more source