Results 21 to 30 of about 153,018 (297)
Analysis of Possible Origination of Domes in Longwalls
Горные науки и технологии, 2019 The research is aimed at solving problems of assessing underground working stability in complicated mining and geological conditions to increase reliability and safety of mining operations.
R. I. Imranov +4 more
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Crystalline Flat Surface Recovered by High-Temperature Annealing after Laser Ablation
Photonics, 2023 Ultra-short laser pulses (1030 nm/230 fs) were used to laser ablate the surface of crystalline sapphire (Al2O3) at high intensity per pulse 20–200 TW/cm2/pulse. Laser-ablated patterns were annealed at a high temperature of 1500 °C. Surface reconstruction
Daniel Smith +5 more
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Mining of Coal Seams Under the Main Haulage Level / Podpatrové Dobývání Uhelných Slojí
GeoScience Engineering, 2011 Otázka podpatrového dobývání, jako způsobu, kterým lze v určitých případech efektivně vytěžit uhelné zásoby, je stále diskutována. V uvedeném příspěvku se uvádějí výhody i nevýhody této metody.
Chovanec Josef +3 more
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The Aerodynamics of New Design Soccer Balls Using a Three-Dimensional Printer
Applied SciencesEight balls were manufactured with a 3D printer to resemble various types of 32-panel soccer balls. One ball was completely smooth, whereas the other seven possessed various dimple patterns on their surface panels.
Sungchan Hong +2 more
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The South East Asian Journal of Management, 2022 Research Aims - This research study focuses on the factors affecting customer trust in mobile financial services (MFS) in Myanmar by developing a research model that incorporates six different factors: perceived usefulness, perceived ease of use, social
Phyo Min Tun
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Spatio‐Spectral‐Temporal Imaging of Fast Transient Phenomena Using a Random Array of Pinholes
Advanced Photonics Research, 2021 Fast transient phenomena such as light–matter interactions, rapid electrical discharge, light scattering in tissues, and biochemical reactions that generate light signatures can be studied using high‐speed cameras. Herein, a lensless, single camera shot,
Vijayakumar Anand +3 more
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Micromachines, 2023 The performance and lifespan of cutting tools are significantly influenced by their surface quality. The present report highlights recent advances in enhancing the surface characteristics of tungsten carbide and high-speed steel cutting tools using a ...
Minh Nhat Dang +8 more
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Известия высших учебных заведений: Нефть и газ, 2017 Based on the analysis of the existing material on pumping liquids with pressure pulses into the borehole we suggest to consider wellhead injection. The processes of the pressure pulse propagation in the pumped liquid by using wellhead pulsers.
M. Ya. Habibullin +3 more
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Coal seams in the South Moravia Lignite Coalfield [PDF]
Acta Montanistica Slovaca, 2009 In the most top sediments of the Vienna Basin in the south part of Moravia, two coal seams of low rank coal occur - the KyjovSeam and the Dubňany Seam. The area with these seams is called the South Moravian Lignite Coalfield (SMLC). The SMLC was chosenas
Josef Honěk +3 more
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Fresnel incoherent correlation holography with single camera shot
Opto-Electronic Advances, 2020 Fresnel incoherent correlation holography (FINCH) is a self-interference based super-resolution three-dimensional imaging technique. FINCH in inline configuration requires an active phase modulator to record at least three phase-shifted camera shots to ...
Vijayakumar Anand +6 more
doaj +1 more source