Results 81 to 90 of about 816,784 (295)

Polyimide‐Linked Hexaazatriphenylene‐Based Porous Organic Polymer with Multiple Redox‐Active Sites as a High‐Capacity Organic Cathode for Lithium‐Ion Batteries

open access: yesAdvanced Materials, EarlyView.
A high‐capacity polyimide‐linked porous organic polymer (HAT‐PTO) incorporating numerous redox‐active centers is synthesized via a hydrothermal reaction, delivering a high theoretical capacity of 484 mAh g−1. In situ hybridization with carboxyl‐functionalized multiwalled carbon nanotubes enhances conductivity and stability, achieving 397 mAh g−1 at C ...
Arindam Mal   +7 more
wiley   +1 more source

Experimental study on mechanical properties of composite materials of concrete and foamed cement under uniaxial compression

open access: yesScientific Reports
To investigate the mechanical properties of concrete-foamed cement composite specimens (C-FCCS), uniaxial compression tests were conducted on composite specimens with varying proportions and strengths of foamed cement.
Yue Cao   +6 more
doaj   +1 more source

Three-dimensional backfilling mining method and engineering practice in coal mine

open access: yesMeitan xuebao
The single backfilling mining method is difficult to fully meet the requirements of complex filling engineering scenarios, special geological conditions, and precise overburden control.
Qiang ZHANG   +9 more
doaj   +1 more source

Intelligent technology and engineering practice of backfilling mining in Xingdong Mine

open access: yesGong-kuang zidonghua, 2023
Intelligent backfilling mining meets the industry development trend and need of green and intelligent mining in coal mines. But there is currently a lack of systematic research and practical engineering applications on key technologies of intelligent backfilling mining.
ZHANG Jianzhong   +6 more
openaire   +1 more source

One-Step or Two-Step Optimization and the Overfitting Phenomenon: A Case Study on Time Series Classification [PDF]

open access: yes, 2014
For the last few decades, optimization has been developing at a fast rate. Bio-inspired optimization algorithms are metaheuristics inspired by nature.
Fuad, Muhammad Marwan Muhammad
core   +1 more source

LEAD: Literature Enhanced Ab Initio Discovery of Nitride Dusting Layers for Enhanced Tunnel Magnetoresistance and Lower Resistance Magnetic Tunnel Junctions

open access: yesAdvanced Materials, EarlyView.
Magnetic tunnel junctions (MTJs) using MgO tunnel barriers face challenges of high resistance‐area product and low tunnel magnetoresistance (TMR). To discover alternative materials, Literature Enhanced Ab initio Discovery (LEAD) is developed. The LEAD‐predicted materials are theoretically evaluated, showing that MTJs with dusting of ScN or TiN on ...
Sabiq Islam   +6 more
wiley   +1 more source

Localized Temperature Monitoring in Mouse Brain during Light Delivery via a Non‐Planar Tapered Fiber‐Integrated µRTD Sensor

open access: yesAdvanced Materials, EarlyView.
We report a multifunctional tapered optical fiber integrating a conformal micro‐resistance temperature detector (µRTD) for local, real‐time thermometry during optical stimulation. The platform combines light‐delivery and temperature sensing within a minimally invasive footprint, enabling detection of sub‐degree cortical heating under representative ...
Antonio Balena   +6 more
wiley   +1 more source

Subsidence resulting from mining [PDF]

open access: yes, 1916
Illinois coal mining investigations, cooperative agreement. (This report was prepared under a cooperative agreement between the Engineering Experiment Station of the University of Illinois, the Illinois State Geological survey and the U.S.
Stoek, Harry Harkness, 1866-1923   +1 more
core   +1 more source

Integrating ZnO/Ag2O@g‐C3N4‐Based Nanocomposites Into a Carrageenan Matrix to Efficiently Remove Heavy Metals From Water

open access: yesAdvanced Materials Interfaces, EarlyView.
ABSTRACT This research focused on characterizing graphitic carbon nitride (g‐C3N4) nanocomposites incorporated with ZnO and Ag2O nanoparticles, and carrageenan to remove heavy metals. The ZnO/Ag2O@ g‐C3N4 and ZnO/Ag2O/g‐C3N4@Carr nanocomposites demonstrated thermal stability of 97.40% (108.81°C) and 82.80% (188.99°C) for TGA.
Feziwe B. Mamba   +2 more
wiley   +1 more source

Time differential development of destruction mechanism of bolt anchorage system in composite rock formation

open access: yesGeomechanics and Geophysics for Geo-Energy and Geo-Resources
This study systematically investigates the temporal evolution of destruction and debonding mechanisms in composite rock bolting systems. The time-dependent characteristics of failure progression are quantitatively characterized, and a novel assessment ...
Pandong Zhang   +6 more
doaj   +1 more source

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