Results 81 to 90 of about 3,423,640 (317)

Improving the Capacity Retention of Poly(vinylphenothiazine) as Battery Electrode Material by Pore Size Engineering of Porous N‐Doped Carbon Nanospheres as Conductive Additive

open access: yesAdvanced Functional Materials, EarlyView.
By using (meso)porous N‐doped carbon nanospheres with tailored intraparticle porosity and constant particle size as conductive carbon in PVMPT‐based organic battery electrodes, the complete volume of the carbon is accessible for the immobilization of PVMPT, resulting in high accessible specific capacities while maintaining a good rate capability and ...
Niklas Ortlieb   +6 more
wiley   +1 more source

Study on roof deflection distribution of ultra-long working faces based on matrix displacement method

open access: yesMeitan kexue jishu
To investigate the effects of roof conditions, sidewall conditions, and support conditions on roof deflection variations in ultra-long working faces, and to apply beam model theory to hydraulic support design, this study is based on the ultra-long ...
Youwang XING   +4 more
doaj   +1 more source

On Water-Pressure Engines for Mining Purposes [PDF]

open access: yesProceedings of the Institution of Mechanical Engineers, 1880
n ...
openaire   +2 more sources

The Frontiers of Aqueous Zinc–Iodine Batteries: A Comprehensive Review on Mechanisms, Optimization, and Industrial Prospects

open access: yesAdvanced Functional Materials, EarlyView.
This review provides an in‐depth understanding of all theoretical reaction mechanisms to date concerning zinc–iodine batteries. It revisits the inherent issues and solutions of zinc–iodine batteries from the perspective of industrial application. By integrating existing examples of energy storage applications, it identifies the challenges faced on the ...
Haokun Wen   +10 more
wiley   +1 more source

Mining in Alaska - environmental impact and pollution control [PDF]

open access: yes, 1975
Environmental factors affecting mining are difficult to establish in Alaska due to the absence of large scale hard rock mining activities at the present time.
Johansen, N. I.
core  

On Direct-Acting Winding Engines for Mines [PDF]

open access: yesProceedings of the Institution of Mechanical Engineers, 1875
n ...
openaire   +2 more sources

Coupling Interfacial Redox‐Reactions with In Situ Proton Generation for the Photoelectrochemical Separation of Rare‐Earth Elements

open access: yesAdvanced Functional Materials, EarlyView.
To enhance the sustainability of electrochemical separations for resource recovery, a photoelectrochemical ion recovery system is developed that utilizes renewable solar energy. A composite integrating titianium dioxide nanorods and a redox‐copolymer enables spontaneous cation adsorption and light‐activated redox reactions for regeneration, thus ...
Ki‐Hyun Cho   +3 more
wiley   +1 more source

Digital rock mechanics solutions for underground engineering problems such as coal mining

open access: yesMeitan kexue jishu
The observability of underground engineering, such as coal mining, is extremely limited, which makes it difficult to obtain reliable pre-analysis basis for many complex engineering problems. Especially in face of new engineering environment brought about
Haitao LI   +12 more
doaj   +1 more source

Biodegradable and Recyclable Luminescent Mixed‐Matrix‐Membranes, Hydrogels, and Cryogels based on Nanoscale Metal‐Organic Frameworks and Biopolymers

open access: yesAdvanced Functional Materials, EarlyView.
The study presents biodegradable and recyclable mixed‐matrix membranes (MMMs), hydrogels, and cryogels using luminescent nanoscale metal‐organic frameworks (nMOFs) and biopolymers. These bio‐nMOF‐MMMs combine europium‐based nMOFs as probes for the status of the materials with the biopolymers agar and gelatine and present alternatives to conventional ...
Moritz Maxeiner   +4 more
wiley   +1 more source

A review of the management of the mining and metallurgical engineering discipline of the NSFC in 2023

open access: yes工程科学学报
This paper summarizes the application, review, and award of research funding in the Mining and Metallurgical Engineering discipline in the topics of petroleum engineering, mining engineering, safety science and engineering, and metallurgy and material ...
Xibo WANG   +5 more
doaj   +1 more source

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