Results 101 to 110 of about 1,012,080 (297)

A Probabilistic Model to Determine Main Caving Span by Evaluating Cavability of Immediate Roof Strata in Longwall Mining

open access: yes, 2021
Caving process is a complex dynamic phenomenon influences safety and productivity of coal longwall mining. It improves safety due to reduction of load on support, face convergence and abutment stresses.
Aziz, Naj   +4 more
core   +1 more source

Southern Portugal hydroclimate of the last millennium from near‐annually resolved speleothem records

open access: yesJournal of Quaternary Science, EarlyView.
ABSTRACT Hydroclimate in Portugal is influenced by the North Atlantic subtropical high‐pressure system (the Azores High) and by internal climate modes, most prominently the North Atlantic Oscillation, which may shift in position and/or intensity due to anthropogenic climate change.
Alaina Chormann   +10 more
wiley   +1 more source

Presentation of a multi-index clustering technique for the mathematical programming of block-cave scheduling

open access: yesInternational Journal of Mining Science and Technology, 2018
Long-term planning is one of the most important stages that determines the distribution of cash flows over the mine life and the feasibility of the project.
Farshad Nezhadshahmohammad   +2 more
doaj   +1 more source

New constraints on the postglacial evolution of Lago Maggiore, Northern Italy

open access: yesJournal of Quaternary Science, EarlyView.
ABSTRACT Lago Maggiore is situated in an overdeepened valley reach at the southern margin of the European Alps, and its thick sediment infill allows the reconstruction of the postglacial valley and lake evolution. We study here the sedimentary succession in the lower Ossola Valley, which is infilled by ~500 m of deposits. In a marginal position, a core
Lukas Gegg   +9 more
wiley   +1 more source

Numerical Simulation Research on Unloading and Fracturing Characteristics of Immediate Roof Rock in Underground Coal Mining

open access: yesFractal and Fractional
Underground coal mining can induce deformation and failure of overlying strata and ground surface, which seriously endangers the safety of human life and property.
Yan Qin   +4 more
doaj   +1 more source

A new piece in the puzzle: The palaeoecological significance of bryozoans over 7000 years in Daidokutsu Cave (Okinawa, Japan)

open access: yesJournal of Quaternary Science, EarlyView.
ABSTRACT Submarine caves are cryptic, climatically sensitive habitats with long‐term ecological dynamics that are poorly understood. We present the first palaeoecological analysis of bryozoans from Daidokutsu Cave (Okinawa, Japan), based on a sediment core spanning approximately the last 7000 years.
Emanuela Di Martino   +6 more
wiley   +1 more source

Design Parameters Affecting Rill Swell Events for Block Caving Applications

open access: yesApplied Sciences
Rill swell (RS) events are outflows of dry, fine-grained material mainly observed at drawpoints in cave mining. These events can negatively affect production and have fatal consequences.
Raúl Castro   +4 more
doaj   +1 more source

Beyond Chemical Compliance: A Critical Review Toward Microbiome‐Informed Ecological Exit Criteria for Bioremediated Soils

open access: yesLand Degradation &Development, EarlyView.
ABSTRACT Chemical compliance remains the usual endpoint for closing contaminated‐soil remediation projects, although it does not establish recovery of soil function or the durability of the post‐treatment state. This critical review examines when microbiological evidence can contribute to ecological closure decisions.
Mariusz Cycoń
wiley   +1 more source

Particle Percolation in Block Caving Mines

open access: yes, 2011
Knowledge of particle percolation impacts on both the economics and safety of cave mining operations. Nevertheless, very little research has focused on particle percolation in block or sub-level caving mines. The aim of this thesis is to study the percolation of fine particles in highly angular particle assemblies similar to caved rock, using physical ...
openaire   +2 more sources

Proteoforms in Disease: Biomedical Applications of Top‐Down Proteomics

open access: yesMass Spectrometry Reviews, EarlyView.
ABSTRACT The proteome is a dynamic landscape of proteoforms arising from genetic mutations, alternative splicing, and post‐translational modifications (PTMs), which collectively drive biological function and disease phenotypes. Mass spectrometry (MS)‐based proteomics has emerged as an essential technique for elucidating this molecular complexity ...
Holden T. Rogers   +5 more
wiley   +1 more source

Home - About - Disclaimer - Privacy