Results 111 to 120 of about 380,756 (310)

Role of Histidine‐Containing Peptoids in Accelerating the Kinetics of Calcite Growth

Advanced Functional Materials, EarlyView.
Amphiphilic histidine‐containing peptoids mimic carbonic anhydrase (CA) to accelerate calcite step growth. In the presence of Zn2+, they promote the deprotonation of HCO3−, the desolvation of Ca2+, and the reorganization of interfacial hydration layers, thereby reducing the activation barrier for calcite growth.
Mingyi Zhang, Ying Chen, Chenyang Shi, Progyateg Chakma, James J. De Yoreo, Chun‐Long Chen   +5 more
wiley   +1 more source

Push-and-Twist Drillstring Assemblies [PDF]

, 2017
Deep drilling using a rigid drillstring requires the assembly and disassembly of multiple drill pipes. The interfaces between these pipes provide a challenge for automation because they must transmit large drilling forces and movements while, at the same
Firstbrook, David G., Harkness, Patrick, Li, Xuan, Lucas, Margaret, Timoney, Ryan, Worrall, Kevin   +5 more
core  

Artificial Amorphous Interface Matters for Boosting High‐Voltage Stable LiCoO2 Cathode

Advanced Functional Materials, EarlyView.
The amorphization of phosphate‐based surface layer with favorable Li‐ion conducting kinetics is realized by precisely tailored atomic‐level fabrication. This amorphous coating enables the lithium cobalt oxide (LCO) cathode superior high‐voltage rate capability and cycling performance, owing to the fast interfacial ionic transport and maintained ...
Jinjin Ma, Yipeng Sun, Xiaozhang Yao, Haoqi Ren, Wen Zhang, Jian Peng, Ruizhi Yu, Ruying Li, Changhong Wang, Jigang Zhou, Xueliang Sun   +10 more
wiley   +1 more source

Universal Electronic‐Structure Relationship Governing Intrinsic Magnetic Properties in Permanent Magnets

Advanced Functional Materials, EarlyView.
Permanent magnets derive their extraordinary strength from deep, universal electronic‐structure principles that control magnetization, anisotropy, and intrinsic performance. This work uncovers those governing rules, examines modern modeling and AI‐driven discovery methods, identifies critical bottlenecks, and reveals electronic fingerprints shared ...
Prashant Singh
wiley   +1 more source

Experimental Investigation on the Effects of Cutting Direction and Joint Spacing on the Cuttability Behaviour of a Conical Pick in Jointed Rock Mass

Applied Sciences
In this study, a series of rock cutting tests was conducted using a conical pick to investigate the effect of joints on roadheader performance. Tests were performed on intact rock and jointed rock mass specimens with three different joint spacings.
Han-Eol Kim, Min-Seong Kim, Wan-Kyu Yoo, Chang-Yong Kim   +3 more
doaj   +1 more source

Experimental Study on Rock Cutting with the Combination of Conical Diamond Elements and Conventional PDC Cutters

Shiyou jixie, 2023
PDC bits with mixed cutters have performed well in enhancing rate of penetration(ROP)and drilling footage in oilfields.However,the design of such bits excessively depends on the designer's experience and lacks theoretical references and support of ...
Zhang Wenbo, Shi Huaizhong, Xi Chuanming, Zhang Nan, Xiong Chao, Chen Zhenliang   +5 more
doaj  

Coal-rock interface detector [PDF]

, 1979
A coal-rock interface detector is presented which employs a radioactive source and radiation sensor. The source and sensor are separately and independently suspended and positioned against a mine surface of hydraulic pistons, which are biased from an air
Crouch, C. E., Jones, E. W., Rose, S. D.
core   +1 more source

Frontier Advances of Emerging High‐Entropy Anodes in Alkali Metal‐Ion Batteries

Advanced Functional Materials, EarlyView.
Recent advances in microscopic morphology control of high‐entropy anode materials for alkali metal‐ion batteries. Abstract With the growing demand for sustainable energy, portable energy storage systems have become increasingly critical. Among them, the development of rechargeable batteries is primarily driven by breakthroughs in electrode materials ...
Liang Du, Kaidi Zhang, Liang Wang, Di Zhao, Mengqing Hu, Mingli Li, Ming Zhou, Zhenzhen Wu, Mengyang Dong, Bo Fu, Porun Liu, Yun Wang, Hongxia Wang, Yuantong Gu, Lei Zhang   +14 more
wiley   +1 more source

Electrocatalytic Reduction of CO2 to Ethylene: Catalyst Design and Synchrotron‐Based Characterizations

Advanced Functional Materials, EarlyView.
This review evaluates strategies for electrochemical CO2 reduction to ethylene, focusing on copper‐based catalyst design and microenvironment modulation to achieve industrial‐grade performance. By leveraging operando synchrotron‐based characterizations, we provide a multiscale understanding of dynamic structural transformations and key reaction ...
Meng Zhang, Zuolong Chen, Yimin A. Wu
wiley   +1 more source

Innovation and practice of efficient integrated tunneling and bolting in semi-coal rock roadways

Meitan kexue jishu
The efficient and rapid excavation of semi-coal rock roadways is a major engineering challenge that needs to be addressed urgently in the mines with ten-million-ton productivity in Shaanxi-Inner Mongolia mining area. A series of technical issues, such as
Hong WANG, Mingjun CHEN, Kai MA, Jun LI, Xiaofeng ZHANG   +4 more
doaj   +1 more source