Results 61 to 70 of about 1,873,571 (345)

Fuzzy Comprehensive Evaluation Method of Cone Bit Teeth Rock-breaking Efficiency

Shiyou jixie, 2016
Considering that the current evaluation method of rock-breaking efficiency is deficient,fuzzy comprehensive evaluation method was used to analyze the teeth rock-breaking efficiency by using of rock breaking by using rock-breaking volume,area and depth as
Deng Rong, Feng Bo, Ao Jianzhang, Guo Zhengwei   +3 more
doaj  

Mechanism of drilling rate improvement using high-pressure liquid nitrogen jet

Petroleum Exploration and Development, 2019
To address the high rock strength and low drilling rate issues in deep oil/gas and geothermal exploitation, we performed mechanical property tests on three kinds of rock samples (granite, shale and sandstone) subjected to liquid nitrogen (LN2) cooling ...
Zhongwei HUANG, Xiaoguang WU, Ran LI, Shikun ZHANG, Ruiyue YANG   +4 more
doaj   +1 more source

Microplastics from Wearable Bioelectronic Devices: Sources, Risks, and Sustainable Solutions

Advanced Functional Materials, EarlyView.
Bioelectronic devices (e.g., e‐skins) heavily rely on polymers that at the end of their life cycle will generate microplastics. For research, a holistic approach to viewing the full impact of such devices cannot be overlooked. The potential for devices as sources for microplastics is raised, with mitigation strategies surrounding polysaccharide and ...
Conor S. Boland
wiley   +1 more source

Numerical studies on rock breaking of single axe-shaped PDC cutter

Journal of Physics: Conference Series, 2023
For a drill bit, the cutter is the most important part to break the rock. In oilwell drilling, polycrystalline diamond compact (PDC) bit is widely used to shear the rock formation.
Jianlin Yao, Wei Zhang, Bin Liu
semanticscholar   +1 more source

Colloidal Crack Sintering Lithography for Light‐Induced Patterning of Particle Assemblies

Advanced Functional Materials, EarlyView.
Colloidal crack sintering lithography (CCSL) is a microfabrication technique that uses light‐induced photothermal heating to trigger sintering and controlled cracking in polymer colloidal assemblies. Local structural changes generate microchannels and patterns, enabling direct writing of diverse topographic motifs.
Marius Schoettle, Ariane V. Mader, Willem L. Noorduin   +2 more
wiley   +1 more source

Simulation of Downhole Rock-Breaking Characteristics of PDC Bit Composite Impact

Shiyou jixie, 2023
To compare the rock-breaking performances of various impact drilling techniques,a single-PDC-cutter rock impact model was built using the ABAQUS/Explicit module to study the rock-breaking characteristics of a single PDC cutter in cases of no impact,axial
Lei Yuqi, Fang Wei, Cai Chenguang, Yang Gao, Yu Dongbing, Kang Kai, Tian Jialin   +6 more
doaj  

Numerical Simulation Study of Factors Influencing Ultrasonic Cavitation Bubble Evolution on Rock Surfaces during Ultrasonic-Assisted Rock Breaking

Water
With the increasing demand for deep oil and gas exploration and CCUS (Carbon Capture, Utilization, and Storage) engineering, improving rock-crushing efficiency stands as a pivotal technology.
Jinyu Feng, Tie Yan, Zhaokai Hou
semanticscholar   +1 more source

A Single‐Metal‐Doped Nanoplatform for Ferroptosis‐Driven cGAS‐STING Pathway Activation in Hepatocellular Carcinoma Immunotherapy

Advanced Functional Materials, EarlyView.
The cGAS‐STING pathway boosts HCC antitumor immunity but lacks specific activation. Nanoplatform ZMRPF induces HCC ferroptosis via lipid ROS, releasing mtDNA. It synergizes with ZMRPF‐released Mn2⁺ to activate cGAS‐STING, amplifies antigen‐presenting cell activity, reverses HCC immunosuppression, and enables robust systemic antitumor immunity ...
Yuchen Zhang, Shuang Feng, Jie Luo, Kaige Xu, Junfeng Guo, Xingyue Zhang, Mengxue Yuan, Qiang Luo, Yu Huang, Chaoqiang Fan, Kibret Mequanint, Donghui Zhu, Malcolm Xing, Shiming Yang   +13 more
wiley   +1 more source

Research the Surrounding Rock Pressure and Temperature Effect on the Rock‐Breaking Efficiency of TBM Cutter

Engineering Reports
In the process of rock breaking, the surrounding rock pressures exert a remarkable influence on the rock‐breaking efficiency of disc cutters. This study focuses on the rock‐breaking efficiency of tunnel breaking machine (TBM) disc cutters under varying ...
Peng Zhou, Xiaotong Ma, Jianxu Shang, Tianyu Zhang, Jiacan Xu, Zinan Wang   +5 more
doaj   +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, Joshua Schober, Pascal Dippell, Chantal Glatthaar, Smail Mekhilef, David Schäfer, Hannes Hergert, Marcus Rohnke, Matthias T. Elm, Bernd M. Smarsly   +9 more
wiley   +1 more source