Results 121 to 130 of about 22,956 (352)

Tribological Analysis of Mg2Si Particulates Reinforced Powder Metallurgy Magnesium Alloy Composites under Oil Lubrication Condition

open access: yesAdvances in Materials Science and Engineering, 2009
For the evaluation of wear behavior of Mg composites under oil lubrication conditions, powder metallurgy Mg97Y2Zn1 alloy reinforced with additive Mg2Si particles were fabricated by the repeated plastic working (RPW) and hot extrusion. The RPW process was
Katsuyoshi Kondoh   +2 more
doaj   +1 more source

Nanoparticle‐Functionalized Cellulose Through Biosynthesis‐Only Approach

open access: yesAdvanced Science, EarlyView.
This study reports the first covalent incorporation of glucose‐modified carbon dots (Glu‐CDs) into bacterial cellulose (BC) via microbial fermentation, resulting in BC nanofibers that exhibit uniform cyan fluorescence. A 3D‐printable hydrogel (Glu‐CDs‐BC‐SA) is developed, facilitating the fabrication of fluorescent structures. This work demonstrates an
Chunyu Ji   +4 more
wiley   +1 more source

A Low‐Temperature Solar Salt Approach to Fabricate Crystalline Polymeric Carbon Nitride for H2O2 Efficient Photosynthesis

open access: yesAdvanced Science, EarlyView.
This work initiates a novel low‐temperature solar salt approach to fabricate crystalline polymeric carbon nitride (PCN) photocatalyst. The solar salt can facilitate the rapid crystallization processes and precisely regulate the electronic structure of PCN.
Jie Tang   +12 more
wiley   +1 more source

Selective Lithium Recovery via Stepwise Transition Metal Crystallization in a Natural Deep Eutectic Solvent

open access: yesAdvanced Science, EarlyView.
A biodegradable, natural deep eutectic solvent (DES) is designed for preferential lithium (Li) leaching from various cathodes under mild conditions (60 °C, 8 h). Compared to traditional acids and DESs, it achieves >96% Li leaching from black mass with minimal transition metal dissolution via a stepwise reduction, complexation, hydrolysis, and ...
Jingxiu Wang   +8 more
wiley   +1 more source

Probing the Dynamics Process of High‐Entropy Alloy Catalysts: Fundamentals, Synthesis, and In Situ TEM Insights

open access: yesAdvanced Science, EarlyView.
Schematic illustration of the basic properties, machine learning synthesis strategy, and formation under in situ TEM of HEAs. Abstract Catalysts play a crucial role in advancing green and clean energy technologies for a sustainable future. Among the various catalysts reported, high‐entropy alloys (HEAs) stand out due to their superior stability and ...
Haider Ali, Yan Xu, Xiao Han, Yue Lin
wiley   +1 more source

Intelligent System for Reducing Waste and Enhancing Efficiency in Copper Production Using Machine Learning

open access: yesMetals
The growing environmental impact of copper production necessitates innovative approaches for optimizing metallurgical processes and minimizing waste. This study addresses this challenge by leveraging advanced machine learning (ML) techniques to enhance ...
Bagdaulet Kenzhaliyev   +5 more
doaj   +1 more source

Toward decarbonization of the titanium industry via hydrogen plasma smelting reduction

open access: yesAdvanced Science, EarlyView.
Hydrogen plasma smelting reduction enables direct, zero‐carbon conversion of low‐grade ilmenite into steel‐grade iron and a titania‐rich precursor for pigment production. The single‐step process merges smelting and refining, sharply lowers silica content, and offers a breakthrough path for sustainable, high‐value extraction from abundant mineral sands.
Laura Gabriela Torres‐Mejia   +5 more
wiley   +1 more source

Sc/Mg Co‐Doping in Na3Zr2Si2PO12 Solid‐State Electrolytes Enables Outstanding Performance of Sodium Metal Batteries

open access: yesAdvanced Science, EarlyView.
This study explores an aliovalent cation co‐doping strategy involving Sc3+/Mg2+ substitution in Na3Zr2Si2PO12 solid‐state electrolyte for high‐performance sodium metal batteries. The optimal Na3.7Zr1.45Sc0.4Mg0.15Si2PO12 SSE significantly enhances the ionic conductivity and regulates the interfacial chemistry, resulting in outstanding rate capability ...
Xin Wang   +9 more
wiley   +1 more source

Energy Policy and Regional Inequalities in the Brazilian Economy [PDF]

open access: yes, 2010
The objective of this paper is to evaluate the long-run regional impacts of tariff policy of the Brazilian electric power sector. The structural reforms carried on this sector determined the emergence of two different spatial distribution trends of the ...
Haddad, Eduardo   +2 more
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