Results 81 to 90 of about 39,957 (227)

Intensification of Northern Hemisphere Glaciation Triggered the Red Clay to Loess‐Paleosol Shift on the Chinese Loess Plateau 2.7 Million Years Ago

Geophysical Research Letters, Volume 53, Issue 4, 28 February 2026.
Abstract Widespread aeolian loess‐paleosol and red clay sediments on the Chinese Loess Plateau (CLP) provide a globally unique terrestrial archive of Neogene–Quaternary climate. However, the timing and associated mechanisms of red clay to loess‐paleosol shift remain debated.
Xinxia Li, Hong Ao, Chunju Huang, Xiangyu Zhao, Jinyu Kou, Qiang Sun, Pingguo Yang, Ziyun Zhang, Xiaoke Qiang, Wei Li, Peng Zhang, Jiao Yao   +11 more
wiley   +1 more source

Contamination of surface waters by mining wastes in the Milluni Valley (Cordillera Real, Bolivia): Mineralogical and hydrological influences [PDF]

, 2008
This study is one of very few dealing with mining waste contamination in high altitude, tropical-latitude areas exploited during the last century. Geochemical, mineralogical and hydrological characterizations of potentially harmful elements (PHEs) in ...
Isaure, Marie-Pierre, Probst, Anne, Roulet, Marc, Salvarredy-Aranguren, Matias Miguel   +3 more
core   +3 more sources

Batch Sintering of FeO·OH and Fe₂O₃ Blends: Chemical and Metallurgical Characterization

Metals
A sample of goethite iron ore sinter feed (G_SF) was employed as a raw material in a sintering bed. This sample partially replaced hematite sinter feed (H_SF), which is currently used as raw material in a sintering plant in the state of Minas Gerais ...
Igor J. U. V. Pereira, Henrique C. S. Coelho, Cláudio G. Santos, Eduardo A. Brocchi, Rodrigo F. M. Souza, Victor A. A. Oliveira   +5 more
doaj   +1 more source

Red Pigments in the Bronze Age Burials in the North Caucasus: Complex Analysis for Identification of Pyroprocessing of Iron Minerals

Вестник Волгоградского государственного университета. Серия 4. История, регионоведение, международные отношения, 2018
Ochre is a natural pigment of yellow or red color, mainly consisting of iron minerals. Along with determining the origin of mineral dyes, one of the main problems of studying natural pigments in archaeology is identifying the origin of the so-called “red”
Pavel I. Kalinin, Viktor A. Trifonov, Natalya I. Shishlina, Andrey O. Alekseev   +3 more
doaj   +1 more source

Upscale Engineered Catalysts for Advanced Oxidation Processes

ChemCatChem, Volume 18, Issue 4, 25 February 2026.
This review highlights recent advances in catalyst design for advanced oxidation processes (AOPs), emphasizing the development of upscaled, structurally engineered catalysts that enhance stability, reusability, and scalability. Strategies combining material innovation and reactor optimization are discussed to enable sustainable, large‐scale wastewater ...
Lingli Zhu, Wei Ren, Shaobin Wang, Xiaoguang Duan   +3 more
wiley   +1 more source

Photoreductive Dissolution of Iron Oxides Trapped in Ice and Its Environmental Implications [PDF]

, 2010
The availability of iron has been thought to be a main limiting factor for the productivity of phytoplankton and related with the uptake of atmospheric CO_2 and algal blooms in fresh and sea waters. In this work, the formation of bioavailable iron (Fe(II)
Choi, Wonyong, Hoffmann, Michael R., Kim, Kitae, Park, Byong-Kwon, Yoon, Ho-Il   +4 more
core   +1 more source

Forms of iron in parent rocks of soils developed from Lower Triassic (Buntsandstein) deposits in the NE part of the Holy Cross Mountains (Poland)

Soil Science Annual, 2018
The aim of the study was to characterize pedogenic iron forms in the sediments of the Lower Triassic (Buntsandstein) in the north-eastern part of the Holy Cross Mountains.
Zagórski Zbigniew, Kisiel Monika
doaj   +1 more source

Geological Storage of CO2 and H2: A Bibliometric Synthesis of General and Laboratory‐Scale Research Evolution

Greenhouse Gases: Science and Technology, Volume 16, Issue 1, Page 111-124, February 2026.
ABSTRACT Underground gas storage is a cornerstone technology for addressing climate change and advancing the clean energy transition. By managing greenhouse gas emissions and enhancing energy system resilience, it supports global sustainability goals.
Sara Roces, Jhon Caicedo‐Potosí, Timea Kovács, Berta Ordóñez‐Casado, Sergio Llana‐Fúnez, Edgar Berrezueta   +5 more
wiley   +1 more source

Combustion Synthesis Ironmaking: Investigation on Required Carbon Amount in Raw Material from the Viewpoint of Adiabatic Flame Temperature Calculation

Indonesian Journal of Chemistry, 2019
Combustion synthesis (CS) is a simple and very fast method to synthesize a target material. New ironmaking method via the CS using carbon-infiltrated iron ore was proposed, and the possible conditions for the method were investigated.
Keisuke Abe, Ade Kurniawan, Masafumi Sanada, Takahiro Nomura, Tomohiro Akiyama   +4 more
doaj   +1 more source

Impact Reactivation of a Hydrothermal System in Basalt in the Vargeão Dome Impact Structure, Brazil

Journal of Geophysical Research: Planets, Volume 131, Issue 2, February 2026.
Abstract As hydrous minerals have been observed in impact craters on Mars, impact‐generated hydrothermal systems (IGHSs) have been considered as potential habitats for life on that planet. The Vargeão Dome, a 12 km wide impact structure in southern Brazil, was formed in basalts with at least two hydrothermal alteration stages.
Jitse Alsemgeest, Fraukje M. Brouwer, Luis F. Auqué, Kirsten van Zuilen, Natalia Hauser, Wolf Uwe Reimold   +5 more
wiley   +1 more source