Results 91 to 100 of about 11,180,393 (312)

Analysis Of Highwall Mining Stability - The Effect Of Multiple Seams And Prior Auger Mining On Design [PDF]

open access: yes
The objective of this is paper is to review the current state of knowledge and practice in highwall mining (HWM). HWM has become a widely-applied method in surface mining, commonly used alone or in conjunction with contour or slot mining. It provides 800-

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Two‐Step Thermal Upcycling of Flexible Printed Circuit Board Waste Into Metallic Copper Nanoparticles: Synthesis and Characterization

open access: yesAdvanced Materials Technologies, EarlyView.
A two‐step thermal upcycling process converts flexible printed circuit board waste into high‐purity copper nanoparticles using polymer degradation and arc discharge. The synthesized nanoparticles exhibit controlled morphology and high metal purity.
Bikesh S. Ghinangju   +2 more
wiley   +1 more source

Transactions of the American Institute of Mining Engineers.

open access: yes, 1873
Mode of access: Internet.Vols. 1-5 in v. 5; Vols. 1-15. 1 v.; Vols. 11-25. 1 v.; Vols. 21-25. 1 v.; Vols. 1(1871)-35 (1904). 1 v.; Vols. 36 (1905)-55 (1915). 1 v.; Vols. 56 (1916)-72 (1925). 1 v.
American Institute of Mining Engineers.
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Moisture‐Adaptive Triboelectric Materials and Platforms: Design Strategies, Performance Enhancement, and Applications in Energy Harvesting and Wearable Electronics

open access: yesAdvanced Materials Technologies, EarlyView.
This review summarizes moisture‐adaptive strategies that enable triboelectric nanogenerators (TENGs) to operate across diverse moisture conditions. It examines moisture‐management methods, including exclusion, directional transport, removal, and utilization, with charge‐regulation approaches based on interfacial, dielectric, and structural engineering.
Junzhe Gan   +4 more
wiley   +1 more source

Analysis Of Safety Aspects And Mining Practices For Effective Ground Control In Surface Mining [PDF]

open access: yes
Fatalities caused by highwall/spoil bank failure in the surface mines, coal and non-metal, increased to an alarming rate of seven during 1999. To determine the causes of slope failure and successful mining practices, the National Institute for ...

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Mechanism of Cement Stone Damage by Hydrogen Sulfide in Oil and Gas Wells

open access: yesES Materials and Manufacturing
Hydrogen sulfide is the most aggressive to cement stone. It can be in gaseous or dissolved in formation fluid state. The mechanism of damage to cement stone depends on the state of hydrogen sulfide.
F. Agzamov   +6 more
doaj   +1 more source

Chitin‐Chitosan Cryogels for the Reversible Sequestration and Recovery of Heavy Metals From Wastewater

open access: yesAdvanced Materials Technologies, EarlyView.
Chitin‐chitosan cryogels with degrees of N‐acetylation from 12.2% to 71.4% are fabricated by dissolution, coagulation and lyophilization for the sequestration of heavy metals from water. Colorimetry and differential pulse voltammetry showed controlled adsorption and desorption capacities for As5+, Co2+ and Cu2+, making this material attractive for ...
Marta García‐Castrillo   +4 more
wiley   +1 more source

Degradable Magnetic Composites from Recycled NdFeB Magnets for Soft Actuation and Sensing

open access: yesAdvanced Robotics Research, EarlyView.
This work presents a degradable soft magnetic composite made from recycled NdFeB particles embedded in a gelatin‐based organogel. The material is processed into magnetic sensors and soft robotic components, which can later be dissolved in a green solvent to recover NdFeB magnetic particles.
Muhammad Bilal Khan   +14 more
wiley   +1 more source

Advancing drilling parameter reliability: A data-driven comparison of MWD and DPM for stratigraphic identification

open access: yesJournal of Rock Mechanics and Geotechnical Engineering
Stratigraphic interface characterization and strength parameter assessment of geomaterials constitute fundamental research priorities in geological and geotechnical engineering. While measurement while drilling (MWD) and drilling process monitoring (DPM)
Ping-Feng Li   +6 more
doaj   +1 more source

Auditory–Tactile Congruence for Synthesis of Adaptive Pain Expressions in RoboPatients

open access: yesAdvanced Robotics Research, EarlyView.
In this work, we explore auditory–tactile congruence for synthesizing adaptive vocal pain expressions in robopatients. Using a robopatient platform that integrates vocal pain sounds with palpation forces, we conducted 7680 trials across 20 participants.
Saitarun Nadipineni   +4 more
wiley   +1 more source

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