Results 91 to 100 of about 3,271 (259)

Highly efficient hard rock-breaking tool for mining machines

IOP Conference Series: Earth and Environmental Science, 2019
BL Gerike, VI Klishin, PB Gerike
openaire   +1 more source

Molecular Bottom‐Up Design of Single‐Site Copper‐Palladium Catalysts for Selective Glycerol Electro‐Oxidation

Advanced Energy Materials, EarlyView.
A bimetallic Cu‐Pd single‐site catalyst for the selective and efficient electrooxidation of glycerol to formate and C3‐products (lactate, glycolate, glycerate) is reported. Experimental and theoretical studies shed light on the catalyst function and reveal that Pd sites facilitate the adsorption of hydroxyl (C‐OH) species which prevents C‐C bond ...
Soressa Abera Chala, Ekemena O. Oseghe, Keseven Lakshmanan, Marcel Langer, Katharina Potemkin, Paul Heim, Rongji Liu, Tobias Rios Studer, Meng‐Che Tsai, Kecheng Cao, Chun‐Chi Chang, Chia‐Yu Chang, Kevin Sowa, Elnaz Ebrahimi, Sarra Rahali, Simon T. Clausing, Sina Sadigh Akbari, Joachim Bansmann, Bing Joe Hwang, Carsten Streb   +19 more
wiley   +1 more source

Experimental study on fractures propagation law and fractures mechanism of gel fracturing

Meitan kexue jishu
Hydraulic fracturing is a widely used physical rock-breaking method to address the challenges in cutting hard rocks. However, conventional water-based fracturing typically generates fractures propagating perpendicular to the minimum principal stress ...
Yukun LIN, Jiangwei LIU, Shaojie CHEN, Nan LI, Xiaofei WANG, Yaoyou LIU, Zhiyuan LU   +6 more
doaj   +1 more source

Breaking the Durability–Power Trade‐Off: Boron‐Directed Faceted O3 Cathodes for High‐Rate Sodium‐Ion Batteries

Advanced Energy Materials, EarlyView.
Boron‐oxide‐assisted particle engineering stabilizes O3‐type layered cathodes for sodium‐ion batteries by mitigating phase transitions and lattice strain. Acting as flux and structural modifier, boron forms submicron hexagonal platelets with (003) facets and expanded Na‐layer spacing, enabling rapid Na⁺ diffusion and mechanical resilience.
Tengfei Song, Alexis Manche, Dongrui Xie, Bowen Liu, Chenglong Wu, Bo Dong, Reda Malakauskaite, Manoj Ovhal, David O. Scanlon, Emma Kendrick   +9 more
wiley   +1 more source

The Future of Hydrogen‐Powered Aviation: Technologies, Challenges, and a Strategic Roadmap for Sustainable Decarbonization

Advanced Energy and Sustainability Research, EarlyView.
Hydrogen‐powered aviation offers a transformative pathway to zero‐emission flight by eliminating in‐flight CO2 emissions. Key considerations include propulsion systems (fuel cells and hydrogen combustion), cryogenic storage and insulation challenges, infrastructure and cost barriers, and supply‐chain constraints.
Mubasshira, Md Mahbubur Rahman, Karib Hassan Khan, Md Nizam Uddin, Dewan Hafiz Nabil   +4 more
wiley   +1 more source

Influence of confining pressure on rock fracture propagation under particle impact

Geomechanics and Geophysics for Geo-Energy and Geo-Resources
Revealing the influence of confining pressure on the propagation and formation mechanism of rock cracks under particle impact is significant to deep rock excavation.
Dong Li, Xing Li, Huaiqian Liu, Yong Liu
doaj   +1 more source

Flexible Memory: Progress, Challenges, and Opportunities

Advanced Intelligent Discovery, EarlyView.
Flexible memory technology is crucial for flexible electronics integration. This review covers its historical evolution, evaluates rigid systems, proposes a flexible memory framework based on multiple mechanisms, stresses material design's role, presents a coupling model for performance optimization, and points out future directions.
Ruizhi Yuan, Sen Chen, Minghui Guo, Ziliang Cui, Yujie Du, Jing Liu   +5 more
wiley   +1 more source

Design, Control, and Clinical Applications of Magnetic Actuation Systems: Challenges and Opportunities

Advanced Intelligent Systems, Volume 7, Issue 3, March 2025.
This review aims to provide a broad understanding for interdisciplinary researchers in engineering and clinical applications. It addresses the development and control of magnetic actuation systems (MASs) in clinical surgeries and their revolutionary effects in multiple clinical applications.
Yingxin Huo, Lidong Yang, Tiantian Xu, Dong Sun   +3 more
wiley   +1 more source

Smart Denture with Embedded Thin‐Film Temperature Sensors Patterned by Femtosecond Laser Pulse for Elderly Healthcare

Advanced Intelligent Systems, Volume 7, Issue 3, March 2025.
We demonstrate the direct‐laser patterning of a gold thin film on polymethyl methacrylate to fabricate a temperature sensor for dentures. The temperature sensor‐embedded smart dentures are evaluated in an oral environment, enabling in‐situ monitoring for elderly healthcare.
Han Ku Nam, Yong Kwon Chae, Seoung‐Jin Hong, Younggen Lee, Dongwook Yang, Byunggi Kim, Sang Wook Kang, Young‐Jin Kim   +7 more
wiley   +1 more source

Study on rock breaking law of ring groove PDC bit mixed PDC cutter and field test

Results in Engineering
In order to solve the problems of low rock-breaking efficiency and poor bit stability of existing PDC bits in hard formation, a kind of annular PDC bit is proposed.
Kuilin Huang, Kaixiong Guo, Jian Zhou, Baxian Liu, Jinchuan Zhang   +4 more
doaj   +1 more source