Results 41 to 50 of about 4,263 (259)

The podiform chromitites in the Dagküplü and Kavad mines, Eskisehir ophiolite (NW-Turkey): Genetic implications of mineralogical and geochemical data

open access: yesGeologica Acta, 2009
Mantle tectonites from Eskisehir (NW-Turkey) include high-Cr chromitites with limited variation of Cr#, ranging from 65 to 82. Mg# ratios are between 54 and 72 and chromite grains contain up to 3.71 wt% Fe2O3 and 0.30 wt% TiO2.
I. UYSAL   +5 more
doaj  

Mesoporous Silica Nanoparticles in Biomedicine: Advances and Prospects

open access: yesAdvanced Materials, EarlyView.
Mesoporous silica nanoparticles offer unique properties like high surface area, tunable pores, and functionalization. They excel in drug delivery, tissue engineering, and stimuli‐responsive therapies, enabling targeted and controlled treatments. With roles in cancer therapy and diagnostics, their clinical translation requires addressing challenges in ...
Miguel Manzano, María Vallet‐Regí
wiley   +1 more source

POM‐Based Water Splitting Catalyst Under Acid Conditions Driven by Its Assembly on Carbon Nanotubes

open access: yesAdvanced Materials, EarlyView.
A newly‐engineered POM‐based electrocatalyst incorporating non‐innocent counter cations exhibits fast kinetics for either the OER or HER under strongly acidic conditions (1 m H2SO4), depending on whether it is assembled on carbon nanotubes (1@CNT) or physically mixed with them (1/CNT). In water‐splitting tests using a two‐electrode setup, these systems
Eugenia P. Quirós‐Díez   +8 more
wiley   +1 more source

Processing of platinum group metal ores in Russia and South Africa: current state and prospects

open access: yesЗаписки Горного института, 2020
The presented study is devoted to a comparative review of the mineral raw material base of platinum group metals (PGMs) and technologies of their processing in South Africa and Russia, the largest PGM producers.
Tatyana N. Aleksandrova   +1 more
doaj   +1 more source

Leaching kinetics of gold mine tailings: the removal of manganese and iron by sodium carbonate [PDF]

open access: yesE3S Web of Conferences, 2019
South Africa is a mineral-rich country with numerous metals and minerals such as gold, copper, and platinum group metals which are exploited to a significant extent.
Mashifana Tebogo, Sithole Nastassia
doaj   +1 more source

Reflectance spectroscopy and analytical techniques in characterising PGE-bearing host rocks

open access: yesGeosystems and Geoenvironment, 2023
The Mettuppalaiyam mafic and ultramafic complex (MUC) is part of the Southern Granulite terrain in India. MUC is one of the promising sites for Ni-Cu-Cr and Platinum Group of Elements (PGE) mineralisation.
K. Tamilarasan   +2 more
doaj   +1 more source

AI–Guided 4D Printing of Carnivorous Plants–Inspired Microneedles for Accelerated Wound Healing

open access: yesAdvanced Materials, EarlyView.
This work presents an artificial intelligence (AI)‐guided 4D‐printed microneedle platform inspired by carnivorous plants for wound healing. A thermo‐responsive shape memory polymer enables body temperature–triggered self‐coiling for autonomous wound closure.
Hyun Lee   +21 more
wiley   +1 more source

COMPARATIVE ANALYSIS OF COMPOSITION OF GOLD FOIL FROM ARCHAEOLOGICAL MONUMENTS OF ALTAI, URALS, AND DON REGION: ICP-MS AND XRF DATA [PDF]

open access: yesМинералогия, 2016
The composition of gold foil from archaeological monuments of Altai, Urals and Don region was studied with ICP-MS and XRF. The foil from the Altai and Uralian monuments is characterized by the higher contents of Pt (54–315 ppm) and Pd (3–13 ppm) in ...
V.V. Zaykov   +5 more
doaj  

Smart Closed‐Loop Systems in Personalized Healthcare: Advances and Outlook

open access: yesAdvanced Materials Technologies, EarlyView.
A smart closed‐loop e‐textile integrates multimodal sensing, onboard processing, wireless communication, and wearable power to enable real‐time physiological/biochemical monitoring and feedback‐controlled therapy. ABSTRACT Smart textiles represent a revolutionary frontier in healthcare, seamlessly blending fabric and advanced technologies to create ...
Safoora Khosravi   +12 more
wiley   +1 more source

Critical minerals: Challenges and opportunities in platinum group mineral flotation

open access: yesProceedings of XVI International Mineral Processing and Recycling Conference - zbornik radova
Platinum group minerals (PGMs) are critical for the green energy transition, playing key roles as catalysts in fuel cells and catalytic converters. Their limited global supply as well as geopolitical challenges further elevate their strategic importance.
Belinda McFadzean   +3 more
openaire   +1 more source

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