Results 81 to 90 of about 3,577,938 (260)

Modeling and optimization of the hydroaerodynamic regime in the transport – secondary concentration zone in column flotation machines

open access: yesРуды и металлы
Based on the results of modeling of aero-hydrodynamic regime in the area of transportation and secondary concentration of the foam product of copper ore flotation, approaches to optimizing the design parameters of column pneumatic flotation machines have
Metelev A. A.   +4 more
doaj   +1 more source

Coordinated Architectural and Chemical Reinforcement in the Crushing Mandible of a Soldier Termite

open access: yesAdvanced Functional Materials, EarlyView.
The crushing mandible of a soldier termite withstands substantial biting loads despite lacking mineral. Its cuticle is partitioned: convex teeth pair hardness and zinc enrichment with aligned chitin fibers for contact durability, while stiffer concave regions between teeth carry bending loads.
Andrew Tran Nguyen   +16 more
wiley   +1 more source

Hydrometallurgical processing of gold-containing ore and its washed products

open access: yesMetalurgija, 2021
This article presents the results of hydrometallurgical studies of gold-bearing ore. The experiments were carried out on 2 parallel weighed portions with the analysis of products by assay (cake) and atomic absorption (solution) analyzes of gold.
P. K. Fedotov   +3 more
doaj  

Exploring the performance of an Air Plant [PDF]

open access: yesMATEC Web of Conferences
The global depletion of high-quality coal reserves necessitates a paradigm shift in coal processing. Traditional methods have focused primarily on wet processes; however, the industry requires alternative methods that are fit for purpose and cost ...
Magagula Sandra   +3 more
doaj   +1 more source

Chitin‐Derived Carbon‐Metal Functional Materials

open access: yesAdvanced Functional Materials, EarlyView.
Functional carbon materials are synthesized from combination of biopolymer (chitin) and iron precursors. The resultant material exhibits superior surface area and adsorptive properties compared to carbon materials synthesized directly from pure chitin.
Herry Fang   +7 more
wiley   +1 more source

Experimental Study on Flotation of a Molybdenum Mine in Inner Mongolia by LKD-3

open access: yesKuangchan zonghe liyong
In view of the problems of complex dissemination state, serious argillization and difficult to reduce tailings grade of a molybdenum mine in Inner Mongolia, LKD-3 collector was used to conduct the flotation test.
Ying LI   +6 more
doaj   +1 more source

Programming Nanoscale Reaction Environments via Peptide Localization for Gold Nanoparticle Growth in Liposomal Nanoreactors

open access: yesAdvanced Functional Materials, EarlyView.
The liposome nanoreactor method enables uniform metal nanoparticle synthesis using the interior as a reaction environment. We demonstrate that peptide sequences and lipid compositions act as a functional molecular switch to control reaction environments in liposome nanoreactors.
Yuya Abe   +6 more
wiley   +1 more source

An Efficient Peptide Screening Method for Mineral-Binding Peptides

open access: yes
In mineral processing, arsenic-bearing minerals are particularly difficult to separate from their non-arsenic counterparts because they possess similar surface properties.
Lam Ian Ku   +2 more
core   +1 more source

Electrochemical Pathways for Nitrate Conversion to Ammonia: From Environmental Challenges to Ammonia Economy

open access: yesAdvanced Functional Materials, EarlyView.
This perspective presents recent advances in electrocatalytic nitrate reduction, focusing on reaction mechanisms, catalyst design, and electrolyzer configurations. Key challenges in selectivity, stability, and practical wastewater treatment are highlighted, while future directions for advancing sustainable ammonia synthesis and nitrate remediation are ...
Xintong Li   +9 more
wiley   +1 more source

Leaching of Chalcopyrite under Bacteria–Mineral Contact/Noncontact Leaching Model

open access: yes, 2021
Bacteria–mineral contact and noncontact leaching models coexist in the bioleaching process. In the present paper, dialysis bags were used to study the bioleaching process by separating the bacteria from the mineral, and the reasons for chalcopyrite ...
Pengcheng Ma   +5 more
core   +1 more source

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