Results 31 to 40 of about 905,932 (309)
Quantum Emitters in Hexagonal Boron Nitride: Principles, Engineering and Applications
Advanced Functional Materials, EarlyView.Quantum emitters in hexagonal boron nitride have emerged as a promising candidate for quantum information science. This review examines the fundamentals of these quantum emitters, including their level structures, defect engineering, and their possible chemical structures.
Thi Ngoc Anh Mai +8 more
wiley +1 more source
Shipin yu jixieObjectiveTo investigate the accurate positioning and error compensation model of pneumatic actuators in food sorting machinery, and to improve positioning accuracy and dynamic response.MethodsThe effects of cylinder diameter, position sensor resolution ...
WANG Jianzu
doaj +1 more source
Adaptive control method for drilling robot based on coal and rock drillability
Gong-kuang zidonghua, 2023 Due to the complex geological and mechanical environment of coal-bearing strata, the feed resistance of the drilling rig feed system and the load torque of the rotary system are complex and diverse.
LI Wangnian +4 more
doaj +1 more source
Journal of Petroleum Exploration and Production Technology, 2021 Increasing drilling speed and efficiency of hard formation for deep and ultra-deep well is one of the international recognized drilling problems and key technologies to be tackled urgently.
T. Fang +4 more
semanticscholar +1 more source
Advanced Functional Materials, EarlyView.The dielectric properties of clays are studied on the level of individual monolayers and functional double stacks. The material breakdown characteristics and charge storage performance are analyzed. For illustration, a defined charge pattern representing a cuneiform character is produced, written into a microscopic clay tile, referencing the origins of
Sebastian Gödrich +6 more
wiley +1 more source
Impact of Drilling Fluid Contamination on Performance of Rock-Based Geopolymers
SPE Journal, 2021 Our objective is to present selected rheological and mechanical properties of rock-based geopolymers contaminated with different concentrations of drilling fluids.
E. Eid +4 more
semanticscholar +1 more source
Mesoporous Carbon Thin Films with Large Mesopores as Model Material for Electrochemical Applications
Advanced Functional Materials, EarlyView.Mesoporous carbon thin films possessing 70 nm mesopores are prepared on titanium substrates by soft templating of resol resins with a self‐synthesized poly(ethylene oxide)‐block‐poly(hexyl acrylate) block copolymer. A strategy to avoid corrosion of the metal substrate is presented, and the films are extensively characterized in terms of morphology ...
Lysander Q. Wagner +9 more
wiley +1 more source
Shock and Vibration, 2021 The traditional empirical mode decomposition method cannot accurately extract the time-frequency characteristic parameters contained in the noisy seismic monitoring signals.
Chen-yang Ma, Li Wu, Miao Sun, Qing Yuan
doaj +1 more source
Intelligent Prediction for Rock Porosity While Drilling Complex Lithology in Real Time
Computational Intelligence and Neuroscience, 2021 Rock porosity is an important parameter for the formation evaluation, reservoir modeling, and petroleum reserve estimation. The conventional methods for determining the rock porosity are considered costly and time-consuming operations during the well ...
H. Gamal +3 more
semanticscholar +1 more source
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