Results 1 to 10 of about 432,856 (263)
Design and material based Sustainable Mobility – Copper vs. REE [PDF]
E3S Web of Conferences, 2022 Carbon neutrality by 2050 is one of the greatest challenges of our society. Hence, the electrification of the mobility sector belongs to those to focus on, due to their high carbon intensity, when based on combustion engines.
Tikana L. +3 more
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The Behaviour of Low Arsenic Copper Anodes at High Current Density in Electrorefining [PDF]
Archives of Metallurgy and Materials, 2023 Arsenic is the only beneficial impurity for copper electrorefining through inhibiting anode passivation and the formation of floating slimes. The behaviour of copper anodes with different content of arsenic were studied at high current density (>280 A/m ...
Xuyong Zhang +3 more
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East Asian Policy, 2023 In late 2022, Taiwan held its every four years mid-term election that was comprised of almost all of its local electoral contests; the ruling Democratic Progressive Party lost.
John F COPPER
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The determination of the content of gold and silver in geological samples [PDF]
Journal of the Serbian Chemical Society, 2001 Amethod has been elaborated for the determination of the content of gold and silver in geological samples by atomic absorption spectrophotometry (AAS) in combination with the fire assay method.
Petrović N. +3 more
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Yankuang ceshi, 2023 BACKGROUND With the wide application of iridium and rhodium in aerospace, electronics, energy and other fields, it has become a very attractive metal in the world. In China, iridium and rhodium ore resources are relatively scarce with low grade, so it is
LIU Fangmei +4 more
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Insight on the reduction of copper content in slags produced from the Ausmelt Converting Process [PDF]
Journal of Mining and Metallurgy. Section B: Metallurgy, 2021 The reduction of copper content in converting slag using process control is significant to copper smelter. In this study, the slags produced from the Ausmelt Converting Process for copper matte was analyzed using X-ray diffraction and chemical analysis ...
Yuan H.-B. +4 more
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Chemical removal of calcium sulfate deposits from irrigation water transmission pipelines (Case study: Sedimentation of water transmission line from Sarcheshmeh copper complex tailing dam for agricultural use in downstream areas) [PDF]
رویکردهای نوین در مهندسی آب و محیط زیست, 2023 Clogging and blockage of water transmission pipelines is one of the problems that reduce discharge downstream by creating various sediments. The aim of this study was to identify and remove the constraints caused by sediment in the water transmission ...
Anita Afkhami +5 more
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Kinetics of pyrite oxidation by hydrogen peroxide in phosphoric acid solutions [PDF]
Journal of the Serbian Chemical Society, 1999 The kinetics of pyrite oxidation by hydrogen peroxide in phosphoric acid solutions were investigated. The effects of stirring, temperature, and particle size, as well as of the hydrogen peroxide and phosphoric acid concentrations were studied ...
Dimitrijević Mile +2 more
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工程科学学报, 2023 The Cu–Ti alloy has similar mechanical properties and electrical conductivity to the Cu–Be alloy. It also exhibits excellent high-temperature properties and stress relaxation resistance.
Hu WANG, Yong-da MO, Hua-fen LOU
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Making online learning accessible to disabled students: an institutional case study
Research in Learning Technology, 2006 Based on the authors' reflections on experience working at the Open University, approaches to making online learning accessible to disabled students are considered. The considerations are applicable to all concerned with online learning and indeed
Martyn Copper
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