Results 91 to 100 of about 11,716 (244)

Synthesis of Hematite Using Different Additives and The Fabrication of Hematite/SiO₂ Composite

Chemistry and Materials
Hematite (α-Fe₂O₃) is a widely studied iron oxide due to its broad functional versatility in catalysis, sensing, and environmental applications. However, controlling its morphology and crystallinity remains a challenge, which limits its performance in ...
Shirly Harissyah Alfiani, Qori'atun Ni'mah Salsabila, Reinardo Ramawijaya Widakusuma, Agus Purwanto, Ph.D, Rifqi Almusawi Rafsanjani, Habib Muhammad Zapar, Bagaskoro Pranata Ardhi   +6 more
doaj   +1 more source

The Material Basis of 18th‐Century Meissen Porcelain

Archaeometry, EarlyView.
ABSTRACT In the summer of 1708, the quest for making hard‐paste porcelain from Saxonian clay and other mineral resources succeeded. This was achieved by applying as its essential ingredient newly discovered pure kaolin from Heidelsberg near Aue, western Saxon Ore Mountains.
Robert B. Heimann
wiley   +1 more source

Penedo Do Gato Rock Art Shelter (Monterrei, NW Iberian Peninsula): In Situ and Laboratory Characterisation

Heritage
This paper focuses on the study of the prehistoric art site at Penedo do Gato Rock Art Shelter (NW Spain) through an interdisciplinary collaboration. A key objective was to develop and implement a multi-analytical protocol for characterising prehistoric ...
José S. Pozo-Antonio, Beatriz P. Comendador-Rey, Lucía Rodríguez-Álvarez, Pablo Barreiro, Daniel J. Jiménez-Desmond   +4 more
doaj   +1 more source

Hematite Cubes

AbstractThe methods of synthesis of hematite particles with different shapes are reviewed. Several experimental settings with suspensions of hematite particles are described considering their rolling, spinning in rotating (in vertical or horizontal plane) magnetic field.
M. Brics, O. Petrichenko, Andrejs Cēbers   +2 more
openaire   +1 more source

Materials Characterization and Technological Aspects of Hellenistic Grey Ware Lamps From Nysa‐Scythopolis (Israel): Evidence Suggesting Local Production?

Archaeometry, EarlyView.
ABSTRACT Grey ware lamp fragments and a production waster from Tell Iẓṭabba (Israel) were analyzed to determine their manufacturing technology and provenance. These were compared with a light brown‐orange reference fabric from the same site.
Dana Ashkenazi, Anat Cohen‐Weinberger, Achim Lichtenberger, Oren Tal   +3 more
wiley   +1 more source

Characteristics and Mechanism of Hematite Dissolution and Release on Arsenic Migration in Heterogeneous Materials

Toxics
The migration of arsenic in groundwater is influenced by the heterogeneity of the medium, and the presence of iron minerals adds complexity and uncertainty to this effect.
Zheying Li, Huimei Shan, Wanyue Rong, Zhicheng Zhao, Kexin Ma, Sanxi Peng, Song Wei   +6 more
doaj   +1 more source

(Ultra)high‐Pressure Metamorphism in Sedimentary Versus Basaltic Rocks: Insights From a Variscan Mélange in the South Carpathians

Journal of Metamorphic Geology, EarlyView.
ABSTRACT Reconstructing the pressure–temperature–time (P–T–t) evolution of (ultra)high‐pressure rocks is essential for constraining subduction and collisional dynamics. Subduction zones are often investigated using basic eclogites, whereas nonbasic high‐pressure rocks remain comparatively understudied, potentially hindering a comprehensive ...
Otavio S. G. Silva, Bruno V. Ribeiro, Gavril Săbău, Fabricio Caxito, Paulo A. de Paiva‐Silva, Pierre Lanari, George Luvizotto, Mahyra Tedeschi   +7 more
wiley   +1 more source

Binder-Free Fe₂O₃/MWCNT/Al Electrodes for Supercapacitors

Nanomaterials
This work presents a method for preparing an Fe2O3/MWCNT/Al composite electrode without the use of a binder. Synthesizing the composite material directly on conductive substrates allows one to obtain ready-made supercapacitor electrodes characterized by ...
Alena A. Mitina, Evgene E. Yakimov, Maxim A. Knyazev, Victor I. Korotitsky, Arkady N. Redkin   +4 more
doaj   +1 more source

Nature, origin, and phosphorylation potential of the phosphorus/sulfur‐bearing nanoscale multiphasic assemblages in the CM chondrites Murchison and Murray

Meteoritics &Planetary Science, EarlyView.
Abstract Carbonaceous chondrites contain phosphorus, whose speciation and thus history remain to be investigated. Phosphorus/sulfur‐bearing assemblages have been reported in carbonaceous CM chondrites, but there is no consensus about their exact compositions and origins.
Valentine Megevand, Sylvain Bernard, Corentin Le Guillou, Roberto Conconi, François Guyot   +4 more
wiley   +1 more source

Characterization of coesite‐bearing impact melt glass from the Hapcheon crater, Korea: Trimodal phase architecture, shock metamorphism, and implications for 40Ar/39Ar geochronology

Meteoritics &Planetary Science, EarlyView.
Abstract We present the first micrometer‐scale, phase‐resolved compositional characterization of impact melt glass from the Hapcheon crater (~1.4 km apparent diameter), the first confirmed impact structure on the Korean Peninsula, integrating EPMA‐WDS (5 μm spot), confocal Raman spectroscopy (<1 μm spot), XRD, and 40Ar/39Ar step‐heating geochronology ...
Jin‐Young Lee, Jeongmin Kim, Sei‐Sun Hong   +2 more
wiley   +1 more source