Results 71 to 80 of about 1,416 (183)
Black in Impressionism and Post‐Impressionism: Art, Color Vision, and Psychophysics
Color Research &Application, Volume 51, Issue 3, May/June 2026.Black has engendered controversy in 19th Century color theory and in Impressionist and Post‐Impresssionist painting. The neural mechanisms of blackness perception are being revealed through contemporary psychophysics. ABSTRACT From Paleolithic cave art to modern abstraction, artists have used black not merely as a neutral tone, but as a powerful ...
John S. Werner
wiley +1 more source
Energy Science &Engineering, Volume 14, Issue 5, Page 2476-2498, May 2026.Fluidized gangue backfilling controls mining subsidence through stress redistribution in composite backfill‐pillar systems, reducing surface settlement and stress concentrations. Multi‐scale experimental and numerical analysis provides quantitative design parameters for optimizing ground control in sustainable underground coal mining operations ...
Weilong Zhang +11 more
wiley +1 more source
Geoarchaeology, Volume 41, Issue 3, May/June 2026.ABSTRACT The archaeological site of Las Estacas Cave (NW Tenerife, Canary Islands) preserves some of the earliest human occupations in Tenerife, dating to the 2nd century CE, spanning the entire pre‐European time range up to the 15th century. Using soil micromorphology, this study applies a geoarchaeological approach to reconstruct site formation ...
Pedro García‐Villa +2 more
wiley +1 more source
Deep Q-Network for Optimal Decision for Top-Coal Caving
, 2020 In top-coal caving, the window control of hydraulic support is a key issue to the perfect economic benefit. The window is driven by the electro-hydraulic control system whose command is produced by the control model and the corresponding algorithm ...
Xinwei Li +4 more
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Study on precise control of coal caving mechanisms based on the kinematics of support structures
Gong-kuang zidonghuaPrecise control of the coal caving mechanism is a crucial foundation for realizing intelligent and unmanned top coal caving mining. The spatial relationship between the coal caving mechanism and the rear scraper conveyor, as well as the top coal ...
WANG Zuguang +6 more
doaj +1 more source
, 2022 In the longwall top coal caving method applied in steeply inclined thick coal seams, top coal loss zone is formed above the tail part of the face depending on the coal seam slope and the top coal drawing height, and the coal loss in this region causes ...
ÖZÇELİK, YILMAZ, Celik, Arif
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1303 fully mechanized top-coal caving face goaf nitrogen injection circuit.
, 2021 1303 fully mechanized top-coal caving face goaf nitrogen injection circuit.
Youli Yao (28474) +4 more
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Gong-kuang zidonghuaContact coal-gangue identification requires studying the bearing characteristics of hydraulic support top beams in fully mechanized top coal caving. However, existing research primarily focuses on the bearing characteristics of supports before and after ...
HUO Yuming +3 more
doaj +1 more source
International Journal of Mining Science and TechnologyCoal wall stability is a critical factor influencing coal mining efficiency and threatens the safety of working faces, where irregular coal wall surfaces significantly affect the contact and support effectiveness of the support plate, thereby impacting ...
Jiachen Wang +4 more
doaj +1 more source
Distribution of spontaneous combustion three zones and optimization of nitrogen injection location in the goaf of a fully mechanized top coal caving face. [PDF]
PLoS One, 2021 Qi Y, Wang W, Qi Q, Ning Z, Yao Y.
europepmc +1 more source