Results 141 to 150 of about 478,532 (305)

The Ore-Forming Process of Washan Porphyrite Iron Deposits in the Ningwu District Associated with Iron Oxide Apatite (IOA) Deposits and Iron Oxide Copper Gold (IOCG) Deposits

The Washan iron deposits in Ningwu district contain different magma-related genetic natures, including magmatic, magmatic–hydrothermal and hydrothermal types, and their ore-forming processes remain a subject of debate.
Dezhi Huang, Zhen Liu, Chunming Liu, Wei Xu   +3 more
core   +1 more source

Electrode Oxygen Exchange Enables Polarity‐Controlled Resistive Switching in Topotactic SrCoO2.5

Small, EarlyView.
Electrode chemistry controls the polarity of resistive switching in topotactic SrCoO2.5 heterostructures. Au/SrCoO2.5/Nb‐SrTiO3 (Nb‐SrTiO3: conductive substrate) exhibits polarity‐restricted switching, whereas SrRuO3/SrCoO2.5/Nb‐SrTiO3 switches under both bias polarities.
Rajan Mishra, Sourav Chowdhury, Shivam Choudhary, Subho Saha, Deepak Prajapat, Manish Negi, Shubham Kumar Parate, Mohit Tanwani, Volkmar Koller, Andrei Gloskovskii, Anju Ahlawat, Praveen Kumar Velpula, Angelo Giglia, Pavan Nukala, Sujit Das, Moritz Hoesch, Ram Janay Choudhary   +16 more
wiley   +1 more source

Application of High-Precision Magnetic Measurement in the Exploration of Deep Fluorite Deposits in Ore Concentrations

The Heyu ore-concentrated area in western Henan, situated within the East Qinling metallogenic belt, represents a strategic fluorite resource base currently confronting severe challenges of reserve depletion.
Xin Du, Fengyu Sun, Guanghui Li, Zhuo Zhang, Kun Qi, Yuanyuan Xia, Yao Dong   +6 more
core   +1 more source

Sequential Reduction of Chromite Pellets Using Hydrogen and Silicon Carbide for Carbon Emission Abatement During Ferrochrome Production

steel research international, EarlyView.
H2 prereduction selectively metallizes Fe in UG2 chromite pellets at 1100°C, while silicon carbide becomes active at 1300°C to convert remaining Cr2O3 to carbides and promote Cr metallization. By separating the roles of H2 and SiC, the sequential route reaches up to 65.7% Cr metallization and suppresses in‐furnace CO generation by ≈75% versus ...
D. Coertzen, M. Tangstad, J. P. Beukes, P. G. van Zyl, D. G. Bessarabov, S. P. du Preez   +5 more
wiley   +1 more source

Hydrogen‐Based Reduction of Hematitic Iron Ore in a Fluidized Bed Kinetic Reactor at Elevated Pressures

steel research international, EarlyView.
This study investigates the reduction behavior of two international iron ores, including a synthetic hematite produced by oxidation of magnetite, in a novel fluidized‐bed kinetic reactor at elevated pressures. The reduction takes place at various temperatures (650°C, 700°C, and 750°C), and various hydrogen partial pressures (30, 55, and 80 vol% H2 ...
Valentina Nigitz, Aaron Wieder, Sandra Jezernik, Christoph Ahr, Mark Berchtold, Franz Winter   +5 more
wiley   +1 more source

Massive ore deposits from microscopic organisms. [PDF]

Geology, 2019
Bostick BC.
europepmc   +1 more source

Experimental and Computational Investigation of Slag–Refractory Interactions Under Conditions Relevant to Hydrogen Plasma Smelting Reduction

steel research international, EarlyView.
This study investigates how slag interacts with magnesia–carbon (MgO–C) refractories under conditions relevant to hydrogen plasma smelting reduction. High‐temperature refractory wear tests are combined with thermodynamic modeling to examine refractory dissolution into slag and slag infiltration into the refractory.
Eeli‐Matti Sassi, Eetu‐Pekka Heikkinen, Tero Vuolio, Riku Mattila, Ville‐Valtteri Visuri   +4 more
wiley   +1 more source

Zebra rocks: compaction waves create ore deposits. [PDF]

Sci Rep, 2017
Kelka U, Veveakis M, Koehn D, Beaudoin N.   +3 more
europepmc   +1 more source

How National Security Drives the Coevolution of International Relations and International Business Policy: Evidence From the Belt and Road Initiative

Thunderbird International Business Review, EarlyView.
ABSTRACT Focusing on the Belt and Road Initiative (BRI), this study investigates how national security drives the coevolution of China's political risk management support for multinationals and competing countries' reactions. A competing country is a nation‐state that is neither the home nor host country of a multinational but perceives the ...
Shuang Li, Xueli Huang, Fuming Jiang
wiley   +1 more source

Assessing the Health Impacts of Contaminants on Green Turtles (Chelonia mydas) Along the Southern Coast of Brazil

Environmental Toxicology, EarlyView.
ABSTRACT Chemical pollutants pose a significant threat to marine ecosystems. Among these contaminants are trace elements and polycyclic aromatic hydrocarbons (PAH). Green turtles can be employed to evaluate the oceans' health due to their coastal habitats and exposure to multiple threats.
Camila Roberta da Silva Ribeiro, Andressa Maria Rorato Nascimento de Matos, Eloiza Teles Caldart, Liana Rosa, Camila Domit, Guilherme dos Santos Lima, Ana Paula Frederico Rodrigues Loureiro Bracarense   +6 more
wiley   +1 more source