Results 141 to 150 of about 945,774 (394)
Experimental study on shale-breaking of special-shaped cutter PDC bit
Geomechanics and Geophysics for Geo-Energy and Geo-ResourcesTo enhance the drilling efficiency and extend the service life of PDC (Polycrystalline Diamond Composite) bits in shale formations, this study delves into the rock-breaking mechanisms of special-shaped cutters through a comprehensive experimental ...
Chunliang Zhang +7 more
doaj +1 more source
Quantifying Electron and Ion Transfers in Contact Electrification with Ionomers
Advanced Functional Materials, EarlyView.The concurrent existence of both electron and ion transfers in solid‐ionomer contact electrification is reported. The ion transfer contributes significantly to the process of contact electrification, especially at high humidity, although only less than 2% of ions participate in the ion transfer, suggesting that there is room for further performance ...
Xiaoting Ma +5 more
wiley +1 more source
Cuttings Carrying Behavior of Coring Tools Based on Fluent⁃EDEM Coupling Model
Shiyou jixieTo improve cuttings carrying efficiency in coring operation of ultra⁃deep wells， the cuttings carrying performance of coring tools under complex conditions was studied.
Yang Liuqing, Liu Bin, Liu Bin
doaj +1 more source
Advanced Functional Materials, EarlyView.The successful color control in light‐emitting electrochemical cells based on highly emissive green‐emitting BN‐doped polyaromatic hydrocarbon with thermally activated NIR emitting assemblies. Abstract This work outlines the synthesis and photo‐/electro‐luminescent behavior of a new C‐shaped BN‐doped benzenoid hydrocarbon using N‐directed borylation in
Luca M. Cavinato +6 more
wiley +1 more source
Intensive Weighting of Petroleum Drilling Muds with Galena [PDF]
, 1938 Henry Emmitt Gross
openalex +1 more source
Functional Hydrogel for Modulating Lipid Droplets and Neuroinflammation in Head Injury
Advanced Functional Materials, EarlyView.After TBI, elevated cholesterol levels in activated microglia lead to the accumulation of cholesterol esters in lipid droplets, exacerbating neuroinflammation. A β‐cyclodextrin‐conjugated GelMA (βCD‐GelMA) hydrogel is developed to promotes cholesterol efflux and reduces LDL influx, thereby alleviating intracellular cholesterol and lipid droplet buildup.
Feixiang Chen +9 more
wiley +1 more source
Colloid Chemistry of Clay Drilling Fluids [PDF]
, 1941 A. G. Loomis, T. F. Ford, J. F. Fidiam
openalex +1 more source