Results 31 to 40 of about 31,862 (304)

Research on Selection and Matching of Truck-Shovel in Oversized Open-Pit Mines

open access: yesApplied Sciences, 2023
The equipment investment is large and the annual operating cost is high in oversized open-pit mines. The rationality of the truck-shovel selection and matching has a more prominent influence on the economic benefit of mines.
Hai Xu   +3 more
doaj   +1 more source

Open pit uranium mines (active, inactive, in development), including Zee pits

open access: yes, 2022
Related image: U1636.Date scanned: 2002-7-18.Figure 5 Open pit uranium mines (active, inactive, in development) Text on verso, "Outlined area of figure 4." NASA Photograph 58-0007, May 1974.

core  

Characteristics and Outcomes of Male Participants in a Multicenter Longitudinal Australian Study Cohort

open access: yesArthritis Care &Research, EarlyView.
Objective The aim of this study was to determine the differences in demographic, serologic, and clinical characteristics between male and female patients with systemic sclerosis (SSc) in an Australian cohort. Methods This was a retrospective observational study using data from the Australian Scleroderma Cohort Study.
Emily Lin   +14 more
wiley   +1 more source

Exploring the Effectiveness of Fusing Synchronous/Asynchronous Airborne Hyperspectral and LiDAR Data for Plant Species Classification in Semi-Arid Mining Areas

open access: yesRemote Sensing
Plant species classification in semi-arid mining areas is of great significance in assessing the environmental impacts and ecological restoration effects of coal mining.
Yu Tian   +6 more
doaj   +1 more source

Electrochemical Evaluation of Compressed Selective Laser Melted AlSi7Mg and AlSi10Mg Alloys in Chloride Environment

open access: yesAdvanced Engineering Materials, EarlyView.
The corrosion performance of AlSi7Mg and AlSi10Mg alloys produced through selective laser melting (SLM) was examined under compressive stress in a chloride environment. Electrochemical analyses, including open‐circuit potential (OCP), potentiodynamic polarization (CPP), and electrochemical impedance spectroscopy (EIS), were complemented by scanning ...
Femi John Akinfolarin   +2 more
wiley   +1 more source

Monitoring active open-pit mine stability in the Rhenish coalfields of Germany using a coherence-based SBAS method

open access: yesInternational Journal of Applied Earth Observations and Geoinformation, 2020
With the recent progress in synthetic aperture radar (SAR) technology, especially the new generation of SAR satellites (Sentinel-1 and TerraSAR-X), our ability to assess slope stability in open-pit mines has significantly improved.
Wei Tang, Mahdi Motagh, Wei Zhan
doaj   +1 more source

Stability Analysis of a Steep Rock Slope in a Large Open-Pit Mine in a High-Intensity Area: A Case Study of the Yejiagou Boron Iron Mine

open access: yesGeofluids, 2022
The slope stability of open-pit mines has always been a major problem affecting the safe production of resources from open-pit step mines. At present, slope excavation in open-pit mines is difficult and slope instability problems are becoming ...
Ying Zhang, Jiabing Zhang, Junhua Ma
doaj   +1 more source

Linear vector spaces & applications

open access: yes, 2022
New open textbook for Applied Linear Algebra at the graduate level featuring a variety of in-class modules and applications, computational examples (using MATLAB), and new homework materials.
Pankavich, Stephen
core  

Innovative Processing of Compacted Waste Aluminum Alloy Powders via Controlled Remelting and Solidification

open access: yesAdvanced Engineering Materials, EarlyView.
This study demonstrates an efficient recycling route for out‐of‐spec AlSi10Mg atomized powders through compaction and arc remelting followed by suction casting. By correlating compaction load, cooling rate, and resulting microstructure, we show that intermediate pressures (50–80 kN) and rapid cooling refine dendrites, reduce porosity, and enhance ...
Mila Christy de Oliveira   +4 more
wiley   +1 more source

Research on Dominant Factors and Control Technologies for Instability in Cross-Mining Roadway

open access: yesEng
To investigate the dominant factors and instability mechanism of surrounding rock deformation in cross-mining roadways, a systematic study was conducted using theoretical analysis, numerical simulation, and response surface methodology to examine the ...
Hao Wang   +6 more
doaj   +1 more source

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