Results 21 to 30 of about 353,530 (338)
Electrodialysis of coal mine water
Water Resources and Industry, 2021 The treatment of model solution resembling the coal mine water from the “Bolesław Śmiały” coal mine in Łaziska Górne, Poland, was investigated. Two cases were investigated: 1) electrodialysis is directly applied in concentration of coal mine water; 2) coal mine water is pre-concentrated in the NF-RO system and then fed to the electrodialysis.
Mitko, Krzysztof +3 more
openaire +3 more sources
BIOMONITORING OF ECOLOGICAL STATE OF THE ENVIRONMENT IN THE ZONE OF INFLUENCE OF THE “CHERVONOGRADSKA” MINE OF THE LVIV-VOLYN COALFIELD [PDF]
, 1999 Coal mining has a very negative impact on the environment and it requires monitoring studies to assess the degree of environmental ...
Dekorsy, T. +2 more
core +2 more sources
Shock and Vibration, 2022 Combined with specific engineering examples, the spatial disturbance influence characteristics and laws of the surrounding rock stress in the staggered roadways are analyzed by numerical simulation.
Qingwei Bu +3 more
doaj +1 more source
C60 Fullerene as the Active Site for CO2 Electroreduction
Angewandte Chemie, EarlyView.We reveal a striking finding: Fullerene (C60), beyond its classical role as an electron buffer, can directly serve as a molecular active site for CO₂ reduction. Through data mining, ab initio simulations, and pH–field coupled microkinetics, we uncover that C60’s unique curvature induces strong dipole responses, stabilizing COOH* intermediates and ...
Si‐Wei Ying +9 more
wiley +2 more sources
Shock and Vibration, 2021 The gob-side entry retaining plays an important role in improving working face ventilation, alleviating working face connection, and increasing mining revenue.
Peng Li +4 more
doaj +1 more source
Canaries in the coal mine [PDF]
European Respiratory Journal, 2013 Up until 30 years ago, coalminers relied on canaries as warning systems against harmful gases and pollutants underground. The miners listened for birdsong and if the birds fell silent, then they knew there was danger to their health and to take action. Today we have much more sophisticated information and reporting on the quality of air.
openaire +2 more sources
Meitan kexue jishuThe reserves and production of thick coal seams account for half of the total reserves and production of raw coal in China. By combing the history of thick coal seam mining, we summarize the technology and equipment development practice of thick coal ...
Huijun HAN +5 more
doaj +1 more source
Geofluids, 2022 The gob-side roadway technology is widely used in coal mining in China, as it can improves the recovery rate of coal resources and alleviate the shortage of mining replacement.
Houqiang Yang +8 more
doaj +1 more source