Results 61 to 70 of about 354 (233)

Analysis of drilling and reaming technique of large diameter high directional hole and gas extraction effect

open access: yesMeikuang Anquan
Aiming at the problems of low comprehensive efficiency and high treatment cost in the conventional treatment of mining pressure relief gas in “U” ventilation mining face, taking a mining face in Jincheng Mining Area, Shanxi Province as the research ...
Weifeng YANG   +4 more
doaj   +1 more source

BODIPY‐based J‐aggregates: From supramolecular chemistry to NIR bioimaging and phototherapies

open access: yesBulletin of the Korean Chemical Society, EarlyView.
BODIPY dyes form ordered J‐aggregates through controlled supramolecular self‐assembly, producing narrow, red‐shifted absorption bands with small Stokes shifts. This review highlights design strategies governing J‐aggregation, structure–property relationships, and applications in sensing, bioimaging, and phototherapy, guiding functional BODIPY‐based ...
Pooja Sharma   +2 more
wiley   +1 more source

What drives animal responses to high severity fire? The role of functional traits

open access: yesBiological Reviews, EarlyView.
ABSTRACT Fire regimes are changing worldwide, with increases in the frequency, extent, and severity of fires posing growing risks to biodiversity. Fire severity – the degree of habitat alteration following fire – strongly influences both immediate survival and long‐term recovery of fauna.
Grace A. Vielleux   +3 more
wiley   +1 more source

DRILLING OPTIMIZATION IN ROMANIAN GAS FIELDS USING ADVANCED DIGITAL TOOLS [PDF]

open access: yesRomanian Journal of Petroleum & Gas Technology
The continuous evolution of the energy industry, driven by decarbonization goals and digital transformation imperatives, has led to significant advancements in drilling operations.
Viorel Dragomir   +5 more
doaj   +1 more source

Structure‐Function Tailoring of Plasmonic Nanomaterials for Thin‐Film Photovoltaics

open access: yesCarbon Energy, EarlyView.
This review discusses the mechanisms and recent advancements of plasmonics in achieving effective light management to enhance the performance of thin‐film solar cells. It highlights applications in high‐performance perovskite solar cells and future‐oriented tandem solar cells.
Sen Jiang   +14 more
wiley   +1 more source

Dual‐Field Synergistic Orientation of Carbon Fibers for High‐Efficiency Thermal Management

open access: yesCarbon Energy, EarlyView.
The sample fabricated by synergistically combining reversed electric and low magnetic fields, with photocurable PEG/PPG gel serving as the matrix, exhibits excellent machinability and flexibility. Meanwhile, the thermal conductivity enhancement efficiency of this work is 1351%, significantly superior to similar carbon fiber composite materials ...
Zujian Zhao   +15 more
wiley   +1 more source

Reverse Engineering and Performance Evaluation of a Pump Impeller Fabricated With Additive Manufacturing

open access: yesChemie Ingenieur Technik, EarlyView.
This study explores the process chain for reverse engineering and additive manufacturing of a water pump impeller in a process plant. Key aspects include digital twin creation, CAD redesign, material certification, Hirtisation postprocessing, and performance testing. Insights highlight iterative design for improved precision and reliability.
Michael Stadler   +3 more
wiley   +1 more source

Semi‐analytical solution for the stability of deep vertical shaft considering time‐dependent rock‐structure interaction

open access: yesDeep Underground Science and Engineering, EarlyView.
A novel cavity contraction solution and multilayer shaft wall model were developed to analyze deep shaft stability, considering rock viscosity, support structures, and water pressure, with successful validation through a Hulusu Coal Mine case study.
Bin Chen   +5 more
wiley   +1 more source

Design and Implementation of an Autonomous Miniature Drilling Rig for Directional Drilling

open access: yes, 2019
Denne rapporten viser arbeidet gjort av NTNU-laget under andre fase av Drillbotics. Drillbotics er ein internasjonal borekonkurranse som blir arrangert av DSATS for femte år på rad i 2019, der universitetsstudentar vert utfordra til å bygga og automatisera ein miniatyrborerigg.
openaire   +3 more sources

Development of Ultra-large Specification Positive Displacement Motor Used for Directional Drilling Crossing

open access: yesShiyou jixie, 2017
In the construction of large-diameter pipeline, the conventional directional drilling crossing technology often observes fatigue break and greatly reduced service life of drill pipe under large torque.
Zhu Xiaohua   +4 more
doaj  

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