Results 51 to 60 of about 5,407,826 (314)

Microwave‐Assisted Technologies in Gold Extraction: A Review

Engineering Reports
This review critically examines the application of microwave‐assisted technologies in gold mining and processing, highlighting their potential to improve extraction efficiency and environmental sustainability.
B. Shahbazi
doaj   +1 more source

Hydrothermal leaching behavior of a complex polymetallic secondary sulfide concentrate enhanced by ultrasonication [PDF]

Journal of Mining and Metallurgy. Section B: Metallurgy
Complex polymetallic secondary sulfide concentrate (CPSSC) is difficult to be efficiently utilized because of its special mineral phase structure and high lead and iron content.
Liu Q.F., Liao Y.L., Li J.L., Wu M.
doaj   +1 more source

Monosodium Glutamate as Selective Lixiviant for Alkaline Leaching of Zinc and Copper from Electric Arc Furnace Dust

Metals, 2020
The efficacy of monosodium glutamate (MSG) as a lixiviant for the selective and sustainable leaching of zinc and copper from electric arc furnace dust was tested.
Erik Prasetyo, Corby Anderson, Fajar Nurjaman, Muhammad Al Muttaqii, Anton Sapto Handoko, Fathan Bahfie, Fika Rofiek Mufakhir   +6 more
doaj   +1 more source

The effect of temperature and digested sewage sludge cover over tailings on the leaching of contaminants from Ballangen tailings deposit

Journal of Water and Climate Change, 2021
Dry covers can be applied above tailings to reduce and prevent formation of acid mine drainage and leaching of contaminants. Efficiency of covers is affected by different parameters, of which temperature change under climate change context is one.
Jinmei Lu, Tiina Leiviskä, Ingar Walder
doaj   +1 more source

Tuning the Electronic Structure and Spin State of Fe─N─C Catalysts Using an Axial Oxygen Ligand and Fe Clusters for High‐Efficiency Rechargeable Zinc–Air Batteries

Advanced Functional Materials, EarlyView.
A FeN4─O/Clu@NC‐0.1Ac catalyst containing atomically‐dispersed FeN4─O sites (medium‐spin Fe2+) and Fe clusters delivered a half‐wave potential of 0.89 V for ORR and an overpotential of 330 mV at 10 mA cm−2 for OER in 0.1 m KOH. When the catalyst was used in a rechargeable Zn–air battery, a power density of 284.5 mW cm−2 was achieved with excellent ...
Yongfang Zhou, Yu Mao, Mengyao Chang, Ziyun Wang, Wenke Xie, Cuizhu Ye, Shanghai Wei, Lars Thomsen, Geoffrey I. N. Waterhouse   +8 more
wiley   +1 more source

Shape‐Morphing Nanoengineered Hydrogel Ribbons as Hemostats

Advanced Functional Materials, EarlyView.
This study introduces a self‐assembling, shape‐morphing nanoengineered hydrogel ribbon system that rapidly forms porous aggregates in situ for efficient hemostasis in trauma and surgical applications. Abstract Rapid and effective hemorrhage control remains a major challenge in trauma and surgical care, particularly for complex or noncompressible wounds.
Ryan Davis Jr, Saptarshi Biswas, Jacob Aragon, Asaf Dana, Jasmine Sureka, Vaaridhi Ramanuja, Jeevika Thazhaiselvam, Sarah E. Miller, Taylor H. Ware, Akhilesh K. Gaharwar   +9 more
wiley   +1 more source

Robust and Reversible Thermofluorescence in Solvent‐Free Thermoplastic Polyurethane Composites

Advanced Functional Materials, EarlyView.
Thermofluorescent polymer composites with high‐contrast optical outputs are prepared by solvent‐free blending of indenoquinacridone dye into a thermoplastic polyurethane matrix. The temperature‐dependent fluorescence originates from aggregation–dissociation of the dye molecules, regulated by competing hydrogen bonds from the polymer matrix.
Guanghua Yu, Bowen Tian, Jazmine Aiya Marquez, Chia‐Min Hsieh, Qingsheng Wang, Hung‐Jue Sue, Mohammed Al‐Hashimi, Peiran Wei, Lei Fang   +8 more
wiley   +1 more source

A Novel Selective Oxygen Pressure Leaching for Zinc Extraction from Hemimorphite in Acid-Free Solutions

Metals
A novel acid-free oxygen pressure leaching for the extraction of zinc from hemimorphite was proposed in this study. Green vitriol (FeSO4·7H2O), as one of the important industrial by-products, was used as the leaching reagent to separate zinc from silicon
Tong Wang, Yubo Zeng, Shuang Zhang, Chen Chen, Yang Li, Wenhui Ma, Hongwei Ni   +6 more
doaj   +1 more source

Energy Efficient and Secure LEACH for WSN

Kalpa Publications in Engineering, 2018
This paper proposes energy efficient LEACH protocol for secure data transmission for wireless networks. The proposed work uses Networks Simulator – NS2.27 for the simulation of cluster based routing protocol LEACH in wireless sensor network. The work is to enhance the performance of LEACH in terms of energy saving and secure data transmission.
Jignesh Joshi, Dr. Jagdish Rathod, Dr. Kinita Wandra   +2 more
openaire   +2 more sources

Astrocyte‐Guided Maturation of Neural Constructs in a Modular Biosynthetic Hydrogel for Biohybrid Neurotechnologies

Advanced Functional Materials, EarlyView.
A modular biosynthetic PVA–gelatin hydrogel crosslinked via visible‐light thiol‐ene chemistry is engineered as a coating for neural electrodes. Optimizing matrix composition and mechanical properties enables the hydrogel to support astrocytic populations that guide neural differentiation and functional maturation.
Martina Genta, Sofia Peressotti, Roberto Portillo‐Lara, Josef Goding, Rylie Green   +4 more
wiley   +1 more source