Results 41 to 50 of about 1,470,279 (358)
Evolution of the roof caving and fracture zones during mining of close range coal seams
Scientific ReportsThis study employs an integrated methodology combining slip line field theory, FLAC3D numerical simulation, and hydraulic injection testing to systematically investigate the evolutionary characteristics of roof two zones under repeated mining conditions ...
Jianhua Li +4 more
doaj +1 more source
Selected Aspects of Combustion Optimization of Coal in Power Plants
Energies, 2020 Growing ecological standards force the implementation of solutions that will contribute to reducing greenhouse gas (GHG) emissions to the atmosphere. This is particularly important in Poland, whose energy system is almost 80% based on coal.
Maciej Dzikuć +5 more
doaj +1 more source
A novel dry coal feeding concept for high-pressure gasifiers [PDF]
, 1977 A novel dry coal feeding concept was developed for injecting ground coal into high-pressure gasifiers. Significant power savings are projected because the coal is injected directly with a ram and there is no requirement for pumping large volumes of gas ...
Davis, H. C., Trumbull, H. E.
core +1 more source
Bipolar Hydrogen Production by Hybrid Water Electrolysis
Advanced Functional Materials, EarlyView.This review focuses on the recent advances in uniqueness bipolar H2 production from the oxidation of representative small molecules, including 5‐hydroxymethylfurfural, formaldehyde, alcohols, and N‐heterocycle amides. The target electrocatalysts and the underlying mechanisms are discussed in respect to specific substrate oxidation.
Jiachen Li +5 more
wiley +1 more source
SUSTAINABLE DEVELOPMENT OF TERRITORIES OF MINING REGIONS [PDF]
, 2018 Developing innovative technologies of mining coal seams and increasing the competitiveness of coal produced and providing further diversification of the mine using the "post-mining" concept as the basis for sustainable ...
DUBOVIK, Oleksandr, LOHUNOVA, Oleksandra
core
Tailoring the Properties of Functional Materials With N‐Oxides
Advanced Functional Materials, EarlyView.The properties of materials bearing N‐oxide groups are often dominated by the polar N+─O− bond. It provides hydrophilicity, selective ion‐binding, electric conductivity, or antifouling properties. Many of the underlying mechanisms have only recently been discovered, and the interest in N‐oxide materials is rapidly growing.
Timo Friedrich +5 more
wiley +1 more source
Application of an Integrated 3D–2D Modeling Approach for Pillar Support Design in a Western US Underground Coal Mine [PDF]
, 2023 Sankhaneel Sinha, Gabriel Walton
openalex +1 more source
Advanced Functional Materials, EarlyView.3D porous carbons with tunable density are crucial for energy storage, separations, and load‐bearing applications; however, their fabrication is often constrained by shrinkage during pyrolysis. This study optimizes and demonstrates the versatility of a template–coating pair strategy, producing materials that largely retain their shape and hierarchical ...
Adarsh Suresh +7 more
wiley +1 more source
MANAGEMENT OF SUSTEINABLE DEVELOPMENT AND ECONOMIC REVIVAL OF MINING AREAS AFFECTED BY RESTRUCTURING [PDF]
Analele Universităţii Constantin Brâncuşi din Târgu Jiu : Seria Economie, 2013 Sustainable development of an area or region, as a process of change, of economic and jobs development, entails, in the context of what it summarizes through the dualism: ecosystem-ecoeficiency, community concern over the current and future situation of ...
Valeriu Pleşea +2 more
doaj
Identifying contaminants of coal-derived inertinite in charcoal briquettes: Preliminary findings of microscopic analysis [PDF]
Journal of Water and Land DevelopmentDespite the widespread popularity of charcoal-based grilling fuels, extensive studies have highlighted various pollutants linked to their production and combustion, posing potential risks to human health and the environment.
Zbigniew Jelonek, Iwona Jelonek
doaj +1 more source