Results 81 to 90 of about 22,212 (300)

Platinum-group minerals in the Skouries Cu-Au (Pd, Pt, Te) porphyry deposit [PDF]

, 2018
The Skouries deposit is a platinum-group element (PGE) enriched Cu-Au porphyry system located in the Chalkidiki peninsula, Greece, with associated Ag, Bi and Te enrichment.
Naden, Jonathan, McFall, Katie A, Roberts, Stephen, Spratt, John, Mcfall, Katie A., McDonald, Iain, Baker, Tim   +6 more
core   +1 more source

Flexoelectricity in Photoconversion: Fundamentals, Materials, and Outlooks

Advanced Science, EarlyView.
Mechanical bending of a flexible cantilever induces a strain gradient in the photoactive material. The resulting flexoelectric field couples with photovoltaic and photoconductive effects, modulating charge generation, separation, and collection. A comparative analysis of oxide perovskites, halide perovskites, and two‐dimensional materials is presented,
Xiang Huang, Feng Li, Rongkun Zheng
wiley   +1 more source

Supplemental Material: The origin of platinum group minerals in oceanic crust

, 2023
<p>Methods and petrographic description.</p>
et al., Katy Evans
openaire   +1 more source

Mineralogy of platinum-group elements and gold in the ophiolite-related placer of the river Bolshoy Khailyk, Western Sayans, Russia [PDF]

, 2019
We describe assemblages of platinum-group minerals (PGM) and associated PGE–Au phases found in alluvium along the River Bolshoy Khailyk, in the western Sayans, Russia. The river drains the Aktovrakskiy ophiolitic complex, part of the Kurtushibinskiy belt,
Shvedov, G. I., Сильянов, Сергей Анатольевич, Barkov, A. Y., Martin, R. F.   +3 more
core   +1 more source

Oxygen Vacancy‐Enriched Platinum Single‐Atom Nanozyme Wrapped in Nanoislands: Unlocking Catalytic Activity and Reprogramming Redox Microenvironment for Osteonecrosis Repair

Advanced Science, EarlyView.
CeO2‐x/Pt single‐atom nano‐island is constructed via low‐temperature reduction, featuring abundant oxygen vacancies and an island–sea structure. It delivers outstanding multi‐enzyme‐mimetic activity and ROS‐scavenging efficiency. Density functional theory reveals optimized electronic structures and reaction pathways.
Yang Zhu, Zehui Lv, Xuejie Cai, Penghui Wei, Dengliang Wang, Zhao Wang, Ruoying Wang, Yingjie Wang, Xingdong Yang, Yixin Bian, Jiawei Xu, Xisheng Weng, Liangfeng Wei   +12 more
wiley   +1 more source

Minerals-concentrators of rare-earth elements in basites-ultrabasites intrusives of Norilsk district

Известия высших учебных заведений: Геология и разведка, 2017
The conditions of being, the history of formation and transformation of minerals-concentrators of rare-earth elements (REE) - apatite minerals group and epidote minerals group, have been studied and described.
Yu. D. Gritsenko, A. A. Serova
doaj   +1 more source

Atomic‐Level CuOx‐CoOx‐Pd Interfacial Engineering Enables Hierarchical Synergy for High‐Efficiency ORR Pathways and Boosted Power Output in Alkaline Fuel Cells

Advanced Science, EarlyView.
Atomically dispersed CuOx (CPCu‐1) forms isolated Cu–Ov sites that enable defect‐mediated O2 activation and fast electron/proton transfer via interfacial synergy. In contrast, thick CuOx clusters (CPCu‐10) promote a surface‐adsorption‐controlled pathway with intermediate accumulation, highlighting a mechanism switch from interfacial activation to ...
Yang‐Yang Hsu, Ching‐Hua Fan, Kuan‐Wen Wang, Kuang‐Kuo Wang, Nozomu Hiraoka, Hirofumi Ishii, Ting‐Shan Chan, Po‐Chun Chen, Tsan‐Yao Chen   +8 more
wiley   +1 more source

FIRST REPORT ON PLATINUM-GROUP MINERALS IN CHROMITITES J%OM NORTHWESTERN NEYRIZ OPHIOLITE, IRAN [PDF]

Journal of Sciences, Islamic Republic of Iran, 1993
Electron-probe microanalyses and scanning electron microscopy of chrornitites from some ultramafic members of Neyriz ophiolite indicate that sulifides of platinum- group minerals (PGMs) occur as solid inclusions in chromite grains.
doaj  

Noble metal geochemistry of the Mesoproterozoic igneous complexes Bashkirian meganticlinorium and the eastern edge of the East European Platform

Литосфера, 2018
First described the noble metal (platinum group elements (PGE) and Au) geochemical specialization of magmatic rocks of Bashkirian meganticlinorium and the adjacent part of the East European Platform (EEP).
Sergei G. Kovalev, Sergei S. Kovalev, Sergei I. Vysotsky   +2 more
doaj   +1 more source

Characterisation of the effect of alteration on the PPM platinum ore and evaluation of selected strategies to improve metallurgical performance

, 2011
The aim of this study is in two parts; the first part focuses on mineralogical quantification of the extent of weathering at PPM by profiling the flotation behaviour and host rock density with spatial ...
Ramonotsi, Mpho
core