Results 21 to 30 of about 4,288 (305)

Analysis of Jet Structure and Physical Properties in the Coalfields of Northern China

Applied Sciences, 2022
Archeological discoveries have identified China as one of the first countries in the world to use jet. However, many differences are evident between the jet currently found in existing mines and the archaeological discoveries of cultural relics in terms ...
Yuping Gao, Jinyu Gao, Kaitong Hu, Yufei Ma, Yuanzhi Zhang   +4 more
doaj   +1 more source

Reduction of Sulfur and Ash from Tabas Coal by Froth Flotation [PDF]

Iranian Journal of Chemistry & Chemical Engineering, 2007
Tabas mines in Iran have coal sources which are suitable for use in metallurgy industries as coking coal. But the high sulfur content of this coal imposes severe limitations on its utilization as the sulfur oxide gases evolved from the combustion of high
Mohammad Reza Ehsani, Farahnaz Eghbali
doaj  

STUDY OF BIO-COAL BRIQUETTE AS SOLID FUEL FOR ALUMINUM SMELTER

Sriwijaya Journal of Environment, 2017
Research on alternative energy today based on issues of global warming and greenhouse effects. The use of coal briquettes from low-calorie coal derived from mines in the province of South Sumatera originally destined for the food industry is less ...
Riman Sipahutar, Amir Arifin
doaj   +1 more source

Chemical Composition and Toxicity of PM₁₀ and PM_0.1 Samples near Open-Pit Mines and Coal Power Stations

Life, 2022
Particulate matter (PM)
Aleksey Larionov, Valentin Volobaev, Anton Zverev, Evgeniya Vdovina, Sebastian Bach, Ekaterina Schetnikova, Timofey Leshukov, Konstantin Legoshchin, Galina Eremeeva   +8 more
doaj   +1 more source

Development of a sulfur-based self-terminating process for support removal and surface finishing of additively manufactured Ti-6Al-4V

, 2023
Includes bibliographical references.2022 Fall.The advent of Additive Manufacturing (AM) has widened the design space and complexity of Ti−6Al−4V (Ti64) components.
Raikar, Subbarao
core  

Evaluating net life-cycle greenhouse gas emissions intensities from gas and coal at varying methane leakage rates

Environmental Research Letters, 2023
The net climate impact of gas and coal life-cycle emissions are highly dependent on methane leakage. Every molecule of methane leaked alters the climate advantage because methane warms the planet significantly more than CO _2 over its decade-long ...
Deborah Gordon, Frances Reuland, Daniel J Jacob, John R Worden, Drew Shindell, Mark Dyson   +5 more
doaj   +1 more source

Polymer Interface Enables Reversible Quasi‐Solid Sulfur Conversion in Sodium‐Sulfur Batteries

Advanced Functional Materials, EarlyView.
The polymer interface enables a stable quasi‐solid sulfur conversion pathway in room‐temperature Na─S batteries. The coating regulates Na+ transport, stabilizes the cathode–electrolyte interphase, and accommodates mechanical stress, suppressing electrolyte decomposition and sulfur migration, thereby improving reaction uniformity, reducing polarization,
Reza Andaveh, Ying Zhao, Enzhong Jin, Zixin Zhang, Vinicius Martins, Parham Pirayesh, Yi Gan, Yi Yuan, Yijia Wang, Frederick Benjamin Holness, Changhong Cao, Jun Song, Yang Zhao   +12 more
wiley   +1 more source

Research on cross interference and evaluation method of coal mine gas detection equipment

Gong-kuang zidonghua, 2023
At present, coal mine underground gas detection equipment often causes false alarms or fails to alarm due to cross interference. There are potential safety hazards.
CHEN Yongran
doaj   +1 more source

Beyond Presumptions: Toward Mechanistic Clarity in Metal‐Free Carbon Catalysts for Electrochemical H2O2 Production via Data Science

Advanced Materials, EarlyView.
Metal‐free carbon catalysts enable the sustainable synthesis of hydrogen peroxide via two‐electron oxygen reduction; however, active site complexity continues to hinder reliable interpretation. This review critiques correlation‐based approaches and highlights the importance of orthogonal experimental designs, standardized catalyst passports ...
Dayu Zhu, Hsi‐wen Wu, Xiao Wang, Jie Zhang   +3 more
wiley   +1 more source

Polyimide‐Linked Hexaazatriphenylene‐Based Porous Organic Polymer with Multiple Redox‐Active Sites as a High‐Capacity Organic Cathode for Lithium‐Ion Batteries

Advanced Materials, EarlyView.
A high‐capacity polyimide‐linked porous organic polymer (HAT‐PTO) incorporating numerous redox‐active centers is synthesized via a hydrothermal reaction, delivering a high theoretical capacity of 484 mAh g−1. In situ hybridization with carboxyl‐functionalized multiwalled carbon nanotubes enhances conductivity and stability, achieving 397 mAh g−1 at C ...
Arindam Mal, Jonathan Caroni, Asia Patriarchi, Olivera Luzanin, Rafael Ramos, Jan Bitenc, Manuel Melle‐Franco, Manuel Souto   +7 more
wiley   +1 more source