Results 101 to 110 of about 156,029 (275)

Decentralized Wind Energy Systems as Catalysts for Urban Resilience: A Design Framework

open access: yesEnergy Science &Engineering, EarlyView.
ABSTRACT Confronting the escalating extreme weather events (EWEs) and intensifying winds, this study proposes an active response to these issues by exploring decentralized wind energy production for Peng Chau Island, Hong Kong. It integrates theoretical perspectives on energy democracy—empowering local communities through energy autonomy—and urban ...
Tian Cheng
wiley   +1 more source

Experimental study on mechanical damage characteristics of water-bearing tar-rich coal under microwave radiation

open access: yesGeomechanics and Geophysics for Geo-Energy and Geo-Resources
As a recognized special resource, tar-rich coal can extract the country's scarce oil and gas resources and generate semi-coke that can replace anthracite and coking coal.
Pan Yang   +5 more
doaj   +1 more source

Microwave pyrolysis and its applications to the in situ recovery and conversion of oil from tar-rich coal: An overview on fundamentals, methods, and challenges

open access: yesEnergy Reports, 2021
Efficient, safe, and environmentally friendly methods for the low-carbon utilization of coal are required to exploit this resource as a source of cleaner energy. Tar-rich coal can produce a high volume of oil and is abundant in western China.
Yang Ju   +4 more
doaj  

Porosity Optimization Model to Characterize Gas Seepage Behavior in Longwall Mining Gobs: An Application Case and Simulation Analysis

open access: yesEnergy Science &Engineering, EarlyView.
ABSTRACT The degree of fragmentation of coal rock determines the porosity distribution of goaf porous media, which can be expressed using empirical formulas. However, this method fails in regions with nonuniform caving, dynamic disturbances, or deep high‐stress conditions. Therefore, this study developed a porosity optimization model comprising A and B
Yipeng Song, Zhongshan Wang, Yueping Qin
wiley   +1 more source

GC/MS analysis of coal tar composition produced from coal pyrolysis

open access: yesBulletin of the Chemical Society of Ethiopia, 2007
Coal tar is a significant product generated from coal pyrolysis. A detailed analytical study on its composition and chemical structure will be of great advantage to its further processing and utilization.
Jianfang Jiang   +4 more
doaj  

UTILIZATION OF ACTIVATED ZEOLITE AS MOLECULAR SIEVE IN CHROMATOGRAPHIC COLUMN FOR SEPARATION OF COAL TAR COMPOUNDS

open access: yesIndonesian Journal of Chemistry, 2010
Application of activated zeolite (ZAA) as molecular sieve to separate compounds of coal tar from vaccum fractional distillation, have been done. The size of zeolite was 10-20 mesh and used as solid phase in column chromatography with length of 30 cm. The
Dwi Retno Nurotul Wahidiyah   +2 more
doaj   +1 more source

The Chemistry of the Coal-tar Dyes [PDF]

open access: yesNature, 1911
THE rate of progress in the dyestuff industry is admittedly far more rapid than in any other branch of applied chemistry, and the advances made during the past ten or fifteen years have effected an enormous change in the whole aspect of the subject. Very many dyestuffs of former importance have been abandoned or partially replaced, and hundreds of new ...
openaire   +2 more sources

Stress Relief Effects of Roof‐Cutting at the Junction Zone Between Gob‐Side Entry and Stope Within Extra‐Thick Coal Seams

open access: yesEnergy Science &Engineering, EarlyView.
The analytical model of severe ground pressure in JZGS: (a) Overlying rock strata structure above the stope and gob‐side entry; (b) in situ monitoring of advanced and lateral abutment pressures. Many studies have demonstrated that the overlying strata above the stope and gob‐side entry fracture and collapse at specific angles [28‐30], forming broken ...
Wenrui He, Fulian He, Wenli Zhai
wiley   +1 more source

Evolution law of nanopore properties during underground in-situ pyrolysis of tar-rich coal

open access: yesMeitan xuebao
Underground pyrolysis of tar-rich coal is a green and low-carbon technology that effectively extracts oil and gas resources from coal. It represents the forefront of clean and low-carbon utilization of coal.
Tao XU   +5 more
doaj   +1 more source

PAHs in Coal Tar Sealants: Policy Analyses and Design [PDF]

open access: yes, 2018
Polycyclic aromatic hydrocarbons (PAHs), a class of organic compounds, form during the incomplete combustion of wood, fossil fuels, cooking, garbage, and tobacco (Abdel-Shafy and Mansour 2016). Empirical data has proven the toxicity of these compounds on
Ames, Abigail Rose
core   +1 more source

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