Results 61 to 70 of about 51,904 (265)
Sedimentology, EarlyView.ABSTRACT Thin ferruginous sandy crusts are common on top of sandstone beds in the Early Permian post‐glacial deposits of the Paraná Basin in southern Brazil. These crusts usually preserve wrinkle structures, suggesting that they might be a product of microbial mediation.
Patrícia Weschenfelder +2 more
wiley +1 more source
A report on radon emission from bauxitic material in Perth, Manchester, Jamaica
AIP Advances, 2022 Bauxitic soils in Jamaica are enriched with rare earth elements and other heavy minerals/elements by up to two orders of magnitude relative to bedrock.
Jullian C. B. Williams +2 more
doaj +1 more source
ChemistryOpen, Volume 15, Issue 5, May 2026.Coal fly ash (CFA) is an abundant industrial waste rich in silica and alumina and represents a viable feedstock for zeolite synthesis; however, high levels of calcium and iron limit zeolite purity and crystallisation. This study evaluates acid refluxing and acid roasting as pre‐treatment strategies for the simultaneous removal of Ca and Fe from high ...
Emmanuel Monkgomotsi Victor Gaolefufa +4 more
wiley +1 more source
Ibn Al-Haitham Journal for Pure and Applied Sciences, 2017 In this study the Bauxite has been activated and used to prepare two complexes: Bauxite - urea and Bauxite - melamine, these complexes were merged and polymerized with formaldehyde to prepare the complex Bauxite polymer - urea - melamine - formaldehyde (
Israa M. Radhi +2 more
doaj
Potential of Saudi Arabian bauxite to produce low-carbon cement
CementTo produce calcium aluminate cement (CAC), bauxites are usually fused with lime/limestone at high temperature (1600 °C). At this temperature, the bauxite´s hydrates of alumina break down - dehydroxylation - and combine with calcium forming monocalcium ...
S. Pavia, O. Alelweet
doaj +1 more source
Egyptian Journal of Aquatic Research, 2020 Runoff of bauxite residues had caused severe turbidity in two rivers water near Kuantan. Such river turbidity is a global threat to aquatic fauna like fish embryo.
Mohd Yusoff Nurulnadia +2 more
doaj +1 more source
Enhanced earthing performance by improved design and grounding material properties [PDF]
, 2018 An enhance ground electrode (E.G.E.) is a portable grounding system that acts as an additional grounding system, designed for zero potential reference points. The E.G.E could eliminate the increasing of resistance in grounding conductor as it placed next
Mohd Hasni, Nur Alyaa
core
Performance of silica-supported copper oxide sorbents for SOx/NOx-removal from flue gas II. Selective catalytic reduction of nitric oxide by ammonia [PDF]
, 1992 The selective catalytic reduction (SCR) of nitric oxide by ammonia was studied for silica-supported copper oxide particles to be used as a sorbent/catalyst in a continuous process for the simultaneous removal of SOx and NOx from flue gases.
Edelaar, A.C.S. +4 more
core +2 more sources
Tectonics, Volume 45, Issue 5, May 2026.Abstract The paleomagnetism of Miocene calc‐alkaline volcanics and sediments from Sardinia has firmly showed that the Corsica‐Sardinia microplate rotated 50°–60° counterclockwise (CCW) with respect to Europe between 21 and 15 Ma, during its drift from the Provencal margin. However, Permian to Eocene rocks from central‐south Sardinia revealed higher (up
Gaia Siravo +3 more
wiley +1 more source
Geological Survey of Alabama [PDF]
This is the homepage of the Geological Survey of Alabama (GSA), a data gathering and research agency that explores and evaluates the mineral, water, energy, biological, and other natural resources of the State of Alabama and conducts basic and applied ...
core +2 more sources