Results 71 to 80 of about 346,667 (337)
Meitan xuebaoCoal wall spalling is one of the main factors restricting the safe production of 10 m ultra-large mining height working face.In response to the problem of unclear mechanism of coal wall spalling and difficult control of surrounding rock in the 10 m ultra-
Jiangbin LIU +7 more
doaj +1 more source
The Value Chain of Sustainable Dual Carbon Sodium Ion Capacitors
Batteries &Supercaps, EarlyView.Sodium‐ion capacitors (SICs) bridge the energy‐power gap between batteries and supercapacitors, offering sustainable and scalable energy storage solutions. This review provides a 360‐degree perspective on SIC technology, covering material choices, presodiation strategies, manufacturing challenges, applications and life cycle assessment to ensure ...
Roman Mysyk +23 more
wiley +1 more source
Optimal selection test of material ratio in the top of Ordovician limestone grouting reconstruction
Meitan kexue jishuIt is an effective method to reduce the risk of floor water inrush by grouting reconstruction and sealing of water channel on top of Ordovician limestone before deep confined water mining in Huabei type coal mine in China. The basic properties of fly-ash
Zhenli FAN +5 more
doaj +1 more source
The application for a prediction of the coal spontaneous ignition – Predisam [PDF]
, 2017 The article follows the research of the project number TA01020351 called "The research of possibilities when predicting steam origin and consequent spontaneous ignition of brown coal fuels" which was researched with the support of the Technological ...
Blata, Jan +3 more
core +2 more sources
A novel decision support system for designing and assessing phytoremediation‐to‐biofuel value chains
Biofuels, Bioproducts and Biorefining, EarlyView.Abstract The design of biofuel value chains is a complex process due to the large number of stakeholders involved, seasonality in feedstock availability, security of supply, logistics costs, efficiency considerations, and its multi‐node nature. Decisions on designing phytoremediation‐to‐biofuel value chains are even more complicated, due to the ...
Athanasios Rentizelas +7 more
wiley +1 more source
New possibilities of calculating the volumes of extracted masses in the surface mining of brown coal [PDF]
, 2017 The companies engaged in brown coal mining are looking for ways of managing the mining process as efficiently as possible. The principal mining technology used for brown coal mining in our country, but also in Germany and Poland, are wheel excavators ...
Gibesová, Beáta +3 more
core
The Coal Mines of Pennsylvania
The ANNALS of the American Academy of Political and Social Science, 1911 n ...
openaire +3 more sources
Mobilizing mine lands for biobased decarbonization strategies
Biofuels, Bioproducts and Biorefining, EarlyView.Abstract Over 163 000 ha of mine lands in Pennsylvania (PA) have the potential to produce willow as a feedstock for renewable energy generation. Each year these lands could produce between 454 000 and 907 000 dry Mg of willow, which can be a feedstock for bioenergy (i.e., biopower) with carbon capture and sequestration (BECCS) or sustainable aviation ...
Mallory Wahlstrom +4 more
wiley +1 more source
Rational Use of Land Resource During the Implementation of Transportless System of Coal Strata Surface Mining [PDF]
, 2017 Surface mining and open pits engineering affect the environment in a very negative way. Among other pollutions that open pits make during mineral deposits exploiting, particular problem is the landscape changing. Along with converting the land into pits,
Gvozdkova, T. +4 more
core +2 more sources
, 1930 This scrip is from the Norton Coal Mining mine with a value of $1.https://scholarworks.moreheadstate.edu/kilgore_scrip_collection/1094/thumbnail ...
Norton Coal Mining
core +1 more source