Results 41 to 50 of about 72,267 (298)
Frontiers in Earth Science, 2023 A dynamic optimization method was created to address the production schedule issue in an open-pit coal mine while taking into account the characteristics of the fuzzy structured element.
Guangwei Liu +5 more
doaj +1 more source
Evaluation of Discharge Calculation in Open Pit Mining [PDF]
, 2023 This study presents the discharge calculation of open pit mining drainage system. Open pit mining is one of surface mining methods when the location of the coal is near ground surface. This research uses open pit mine at PT Maruwai Coal as the case study.
Damarnegara, Satria +2 more
core +2 more sources
Limnology of Four Bauxite Open-Pit Lakes [PDF]
, 1972 The aquatic flora and fauna and 18 physicochemical characteristics of four bauxite open-pit lakes were studied from September 1969 to August 1970. The least acid lake (pH 3.4-4.4) supported 49 different aquatic insects, plankton, and higher aquatic ...
Harp, George L., Hubbard, Ronald D.
core +2 more sources
Design methods for open pit coal mine footwalls
, 1986 Special design methods are required for footwalls due to the inability to detect problem geometries (rolls, cross faults, pinchout) prior to mining. Application of new analytical methods to different failure modes is discussed together with aspects of monitoring, geometry detection and mitigation.
D S Cavers +3 more
openaire +1 more source
Advanced Engineering Materials, EarlyView.This study develops sustainable MgO–C refractories using recycled materials and eco‐friendly fructose–tannin binders. The enhanced performance of citric acid as a cross‐linker and functional additives on mechanical and thermomechanical properties was examined. Characterization included strength tests, immersion trials, and microstructural and inclusion
Dinesh K. Gunasekar +7 more
wiley +1 more source
THE FOREST LAND RECLAMATION AFTER LIGNITE OPEN PIT MINING IN THE SOUTH OF UKRAINE [PDF]
, 2018 Lignite mining in Kropyvnytsky region has been performed in the last few decades in Alexandria district in the watershed of the two rivers (Ingulets and Beska). Semenovske - Golodkywske mine is the pit associated with
Kharytonov, Mykola, Masyuk, Oleksandr
core
Positively Charged Polymer‐Brush MOFs for Large‐Area, Pressure‐Resistant Gas Separation Membranes
Advanced Materials, EarlyView.A universal POPA strategy enables positively charged polymer‐brush MOFs with self‐adaptive interfacial interlocking to resist aggregation under fast processing. This design ensures seamless dispersion within large‐area selective layers, achieving 1 m‐wide roll‐to‐roll fabrication of pressure‐resistant MMCMs with tunable CO2 separation performance ...
Yi Yang +11 more
wiley +1 more source
Advanced Science, EarlyView.In this study, FeCoNiCuPt high‐entropy alloy particles (HEA) are loaded onto protonated g‐C3N4 nanosheets (HCN NSs) to construct HEA/HCN composites through an electrostatic self‐assembly method. Protonation treatment enriches the surface of g‐C3N4 nanosheets with abundant active sites and enhances their interfacial charge separation capability ...
Yunzhu Zang +3 more
wiley +1 more source
The Miocene Bükkábrány Fossil Forest in Hungary – field observations and project outline [PDF]
, 2008 The oldest, standing forest preserved as wood has been found at Bükkábrány, Hungary. An open-pit mine working Upper Miocene (Pannonian) lignite revealed sixteen stumps, 1.8 to 3.6 m diameter at base, preserved up to 6 m height, standing on top of the ...
Kázmér, Miklós
core
Advanced Science, EarlyView.A scalable radiative cooling fabric engineered with a multi‐layer assembly core–shell structure and integrated photoluminescent materials is reported. The fabric exhibits remarkable environmental stability, including UV resistance, mechanical durability, hydrophobicity, stain resistance, thermal stability, and flame retardancy, demonstrating its ...
Hongtao Liu +8 more
wiley +1 more source