Structure Design of Bionic PDC Cutter and the Characteristics of Rock Breaking Processes
Processes, 2023 The rational structural design of polycrystalline diamond compact (PDC) cutters effectively enhances the performance of drill bits in rock fragmentation and extends their service life.
Zebing Wu +4 more
semanticscholar +1 more source
Outbreak of Fatal Childhood Lead Poisoning Related to Artisanal Gold Mining in Northwestern Nigeria, 2010. [PDF]
, 2011 Background: In May 2010, a team of national and international organizations was assembled to investigate children's deaths due to lead poisoning in villages in northwestern Nigeria.
Abdullahi M. Bashir +18 more
core +2 more sources
Near‐Infrared Organic Photovoltaic Electrodes for Subretinal Neurostimulation
Advanced Functional Materials, EarlyView.Organic photovoltaic electrodes based on the D18:Y6 blend enable precise and light‐controlled activation of retinal ganglion cells in a degenerating retina. NIR Light‐driven activation of retinal ganglion cells, tunable stimulation parameters, and biocompatibility with human retinal organoids highlight their potential for next‐generation prosthetics ...
Andrea Corna +10 more
wiley +1 more source
Experimental studies of the resultant contact forces in drillbit-rock interaction [PDF]
, 2014 Peer ...
Ajibose, Olusegun Kolawole +2 more
core +1 more source
Precursor Mineral Phases of Forming Mollusk Shell Nacre: A Study of Hydrated Samples
Advanced Functional Materials, EarlyView.Mineral, organic phase, and water are the essential components in mollusk shell nacre formation. Their interplay is not well understood, because the hydrated material is difficult to observe at high resolution, under close to native conditions. Forming nacre is studied using environmental and cryo‐electron microscopy and hydrated ACC phases, together ...
Anna Kozell +4 more
wiley +1 more source
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 +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 +4 more
doaj +1 more source
Improving the operational efficiency of drilling rock-breaking tools
E3S Web of Conferences, 2023 Improving the quality and volume of drilling is the main condition for advancing the growth of reserves of raw materials of the national economy and industry. Rock-breaking tools are the main and busiest part of drilling equipment.
R. Juraev, D. Xatamova, Qobilbek Normaev
semanticscholar +1 more source
Impregnated drill bits strengthened by nanoparticles for mineral exploration drilling [PDF]
, 2018 In order to improve the drilling efficiency and service life of impregnated diamond drill bit, WC and ZrO2 nanoparticles were introduced into traditional drill bit matrix.
Baochang, L. +3 more
core
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