Results 91 to 100 of about 159,837 (244)

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  

Enhancement in graphitization of coal tar pitch by functionalized carbon nanotubes [PDF]

open access: yes, 2017
In this study, the influence of the addition of carbon nanotubes (CNTs) and carbon black (CB) on the graphitization temperature and microstructure of coal tar pitch (CTP) are investigated.
Arani   +46 more
core   +1 more source

Law as a technology of exclusion: the legal construction of racialized and gendered work relations through the case study of international labour law in the first half of the twentieth century

open access: yesJournal of Law and Society, EarlyView.
Abstract This article explores the role of labour law in processes of racialization and gendering of work. It argues that labour law not only protects certain forms of work (law as a protective mechanism), but also systematically excludes other forms of work, especially those performed by racialized and gendered individuals (law as a technology of ...
JULIETA LOBATO
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

Twenty‐Year Longitudinal Cohort Study of Cancer Incidence and Mortality Among Workers in Two Primary Aluminum Prebake Smelters

open access: yesAmerican Journal of Industrial Medicine, Volume 69, Issue 4, Page 269-282, April 2026.
ABSTRACT Background Classified as carcinogenic to humans by the International Agency for Research on Cancer, aluminum production has been transitioning towards lower polycyclic aromatic hydrocarbon‐emitting prebake smelters. This study explored the risk of cancer and mortality over 20 years follow‐up among a cohort of aluminum prebake smelter workers ...
Natasha Kinsman   +7 more
wiley   +1 more source

Integrated and closed‐loop biorefinery strategies for efficient waste valorization and biofuel production

open access: yesThe Canadian Journal of Chemical Engineering, Volume 104, Issue 4, Page 1656-1676, April 2026.
Abstract Advancements in biofuel production technologies are essential for reducing global dependence on fossil fuels and addressing their overexploitation. Many valuable components of biomass, such as cellulose, hemicellulose, and lignin, remain underused in traditional biorefineries, which typically rely on a single feedstock to produce a primary ...
Marcos Paulo Patta Granado   +5 more
wiley   +1 more source

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

Design of Initial Mining Pressure Relief Scheme for Large‐Size Mining Face: A Case Study

open access: yesEngineering Reports, Volume 8, Issue 4, April 2026.
The numerical simulation analysis method is used to compare the actual mining face (315 m) with the designed mining face (200 m). The results show that the large mining height working face has larger abutment pressure peak and stress concentration factor than the general mining height working face.
Qinghu Wei   +3 more
wiley   +1 more source

Improving Carbon and Process Utilization for Biomass-to-Liquid Fuel Operations [PDF]

open access: yes, 2013
With the increasing world demand for transportation fuels, declining petroleum reserves and quest for energy security, there is a renewed interest in Fischer-Tropsch (FT) technology as a viable alternative for the production of liquid
James, O. O.
core   +1 more source

Mouse Vocal Fold Permeability In Vivo: Effects of Novel Low‐Tech Injury and Instillation Methods

open access: yesThe Laryngoscope, Volume 136, Issue 4, Page 1846-1857, April 2026.
Improving experimental mouse vocal fold injury and instillation approaches is necessary to advance preclinical models of laryngeal disease. We have successfully repurposed low‐tech, quick, and reliable injury and instillation methods established in respiratory research. Using these methods, we show that murine vocal fold epithelium is inherently highly
Renee E. King   +2 more
wiley   +1 more source

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