Results 91 to 100 of about 19,486 (279)
Minerals in Afghanistan : the potential for copper [PDF]
, 2006 There are around 300 documented copper deposits, occurrences and showings in Afghanistan as shown in Figure 1. A variety of styles of copper mineralisation occur in rocks ranging in age from Proterozoic to Neogene.
Benham, Antony John, Coats, Stan
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Studies on the orientation of ACEL ZnS:Cu particles in applied AC fields [PDF]
, 2013 This article has been made available through the Brunel Open Access Publishing Fund.In the last sixty years the understanding of the mechanisms of alternating current electroluminescence (ACEL) in transition metaldoped zinc sulfides, in particular ZnS:Cu
Destriau +4 more
core +1 more source
Compensation effect enables high‐mobility in Te‐doped gallium antimonide
Information &Functional Materials, EarlyView.The conduction type of non‐doping GaSb is hole conduction due to the intrinsic point defects, further contributing to low mobility. However, the impurity compensation effect transforms the Te‐doping counterpart into electron transport, which results in high‐mobility.
Yongkang Jiang +17 more
wiley +1 more source
LEACHING OF SYNTHETIC GaAs- AND INDIUM-BEARING SPHALERITE ORE WITH HELP OF “REICHE ZECHE” MINE WATER [PDF]
, 2018 The main goal of the experiment was to leach minerals using microbes. To accomplish this goal, the course dealt with the acquisition of adequate bacteria, by taking water samples in the underground mine “Reiche Zeche”.
Giebner, Fabian +7 more
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Ferric chloride leaching of the Delta sulfide ores and gold extraction from the leaching residue [PDF]
, 1988 Conventional differential and bulk flotation processes have difficulties in achieving high recoveries with acceptable grades far zinc, lead and copper from the complex sulfide ores found at Tok, Alaska.
Lin, H.K., Rao, P.D.
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Do fluid inclusions preserve δ18O values of hydrothermal fluids in epithermal systems over geological time? : evidence from paleo- and modern geothermal systems, Milos island, Aegean Sea [PDF]
, 2003 Stable isotope compositions of quartz (δ18Oquartz) and fluid inclusion waters (δ18OFI and δDFI) were analysed from Profitis Ilias, a low-sulphidation epithermal gold mineralisation deposit on Milos island Greece, to establish if δ18OFI preserve a record ...
Cheliotis, I. +4 more
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ChemistryOpen, EarlyView.The review explores the latest updates and information about the global trends and hazards of e‐waste and also discusses the bioleaching of metals and nanoparticles from various inorganic wastes. It also focuses on the mechanistic pathway of the bioleaching process and computational aspects. Inorganic waste management and metal recovery technology pose
Adhish Jaiswal +7 more
wiley +1 more source
PhotoMat, EarlyView.This paper presents a comprehensive overview of recent advancements in Joule‐heating synthesis of photo and electrocatalysts, emphasizing its benefits and applications. The objective is to offer an effective strategy for enhancing the diversity and performance of catalytic materials.
Jiaqi Li +4 more
wiley +1 more source
physica status solidi (b), EarlyView.Novel Cu–Ni–Sn–S nanocrystals (NCs) stabilized with thioglycolic acid are synthesized in aqueous solutions. The structural and optical properties of Cu–Ni–Sn–S NCs are examined in colloidal solutions and thin films and compared to those of Cu–Zn–Sn–S NCs. The absorption coefficient is α > 104 cm−1 at 400 nm with an estimated Eg≈2.2 eV.
Oleksandra Ivakhno‐Tsehelnyk +4 more
wiley +1 more source
SurfacesMany interesting materials in a broad range of applications have in their composition the coexistence of zinc and iron. Their characterization by XPS should identify and quantify both elements.
Ana Maria Ferraria +1 more
doaj +1 more source