Results 61 to 70 of about 1,504,519 (328)
Evaluation and improvement of economic efficiency in the sphere of bore-hole drilling methods [PDF]
, 2005 One of the important requirements for the methods and technologies, especially in the extractive industry, is cost-effective use of resources. The amount of exploration and industrial bore-hole drilling for various purposes is increasing in today’s world.
Kozlova, Nataliya Vladislavovna +2 more
core +2 more sources
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 +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 +6 more
doaj
Efficient 3D Visual Perception for Robotic Rock Breaking
2019 IEEE 15th International Conference on Automation Science and Engineering (CASE), 2019 In recent years, underground mining automation (e.g., the heavy-duty robots carrying rock breaker tools for secondary breaking) has drawn substantial interest. This breaking process is needed only when over-sized rocks threaten to jam the mine material flow.
Niu, Longchuan +3 more
openaire +2 more sources
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 +13 more
wiley +1 more source
Engineering ReportsIn 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 +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 +9 more
wiley +1 more source
Design and Simulation of Bionic Coupling PDC Cutter
Shiyou jixie, 2021 In order to solve the problems of PDC bit such as low working efficiency, easy stratification of diamond and hard alloy and bit balling formed by delayed discharge of rock fragment, the structure of polycrystalline diamond-hard alloy interface and the ...
吴泽兵, 席凯凯, 王杰, 郭禹伦
doaj
WaterWith 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
, 2014 The Poverty Crusher team built a human-powered rock breaking device for the women in Nepal who make $1.50 - $3 per day crushing rocks. A prototype jaw-type rock crusher was designed and built over a period of several months.
Golterman, Rob +3 more
core +1 more source