Results 151 to 160 of about 70,976 (309)

Analysis on Erosion Wear Laws of High Pressure Manifold

open access: yesShiyou jixie, 2018
In view of the problem that the inner wall of the high-pressure manifold is damaged by erosion during the fracturing operation, the erosive wear rate and the erosion dispersion distribution of the inner wall of the high-pressure manifold are studied ...
Tu Yadong   +5 more
doaj  

Advances in Sustainable and Wearable Textile Based Soft Robotics

open access: yesAdvanced Functional Materials, EarlyView.
This Review examines advances in wearable textile‐based soft robotics, focusing on sustainable materials, integrated sensing, and scalable actuation. It discusses manufacturing and system integration across healthcare, assistive robotics, prosthetics, and human–machine interfaces, and highlights key challenges in circular design, including life‐cycle ...
Zahir Abbas   +6 more
wiley   +1 more source

Continuous Sand Transport Unit for Fracturing in Shale Gas Development

open access: yesShiyou jixie, 2016
Given large displacement and high sand ratio in shale gas recovery,a large amount of sand and fast sanding at 3~8 m3/min are required.The sanding mode in conventional fracturing is inapplicable for its low transport efficiency and large area occupation ...
Wang Yunhai   +4 more
doaj  

Treatment of hydraulic fracturing fluids in petroleum wastewater using physical and biological techniques

open access: yes, 2016
Hydraulic fracturing (‘fracking’) is a drilling and extraction technique that uses large volumes of high-pressure, chemically-treated water to free petroleum and natural gas trapped deep in underground strata.
Alalade, Oludamilola Olusesan
core  

Structure‐Guided Dynamical Mechanics in Bioinspired Double Twisted Laminated Thin Films

open access: yesAdvanced Functional Materials, EarlyView.
This work explores a dynamic mechanistic study of crack propagation and puncture testing via real‐time monitoring of crack initiation, propagation, and termination through nature‐inspired single and double twisted architectures fabricated from cellulose nanocrystals.
Justin Brackenridge   +4 more
wiley   +1 more source

Effect of Cementing Quality on Casing Failure in Horizontal Section of Shale Gas Well

open access: yesShiyou jixie, 2019
The casing for shale gas well is subject to complicate forces. The inferior cementing quality will easily cause large stress concentration on the casing, which will lead to deformation failure.
Mai Yang   +5 more
doaj  

Electrospun Wood‐Derived Biopolymers as Electrodes in Electrochemical Energy Storage Technologies

open access: yesAdvanced Functional Materials, EarlyView.
Electrospinning transforms wood‐derived cellulose and lignin into architecturally defined, binder‐free carbon electrodes with tuneable porosity and functionality. This review shows how fibre design enables decoupled charge and mass transport, enhancing performance across battery systems, while identifying key challenges in spinnability, scalability ...
Michael W. Thielke   +3 more
wiley   +1 more source

Biodegradable and Biocompatible Functional Polymers for Biomedical Applications

open access: yesAdvanced Functional Materials, EarlyView.
Biodegradable and biocompatible functional polymers integrate electrical, mechanical, and stimuli‐responsive functionalities while enabling programmed degradation under physiological conditions. This review introduces recent advances in conductive, shape‐memory, self‐healing, photocurable, and adhesive polymer systems, emphasizing material design ...
Won Bae Han   +5 more
wiley   +1 more source

Two‐Photon Grayscale Lithography (2GL) of High Mechanical and Optical Quality 3D Silica Glass Microstructures

open access: yesAdvanced Functional Materials, EarlyView.
Two‐photon grayscale lithography (2GL) enables high‐speed and precise 3D printing of thermolyzed silica glass microstructures with optical‐grade surface quality, high quality factors, and mechanical strength utilizing a custom‐made pre‐glass resist based on polyhedral oligomeric silsesquioxane (POSS) modified with a high‐sensitivity Norrish type II ...
Jonathan L. G. Schneider   +4 more
wiley   +1 more source

Determination of the state of stress at the Stripa Mine, Sweden

open access: yes, 1982
The state of stress at the Stripa Mine has been measured both in a 381-m-deep hole drilled from the surface and in holes drilled from the drifts underground.
Hustrulid, W.A.,   +4 more
core  

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