Results 131 to 140 of about 2,137,122 (310)

Harnessing metallurgical slags for water treatment: Advances in organic pollutant degradation with and without hydrogen generation, and in heavy metal removal

The Canadian Journal of Chemical Engineering, EarlyView.
Valorization of ferrous and non‐ferrous metallurgical slags for water treatment: modification routes and applications in advanced oxidation, electrochemical processes, and adsorption within a circular economy framework. Abstract The removal of recalcitrant organic pollutants and heavy metals from water remains a critical challenge for safe drinking ...
Flor‐Tania Escárcega‐Olivares, Tania‐Ariadna García‐Mejía, Rosa‐María Ramírez‐Zamora   +2 more
wiley   +1 more source

Impact resistance performance of rockbolt system with(out) rubber cushion energy absorbing and buffering components

Meitan xuebao
The practice of impact resistance support in dangerous roadways has shown that energy absorbing and buffering components can improve the impact resistance performance of rockbolt support systems. A rubber cushion layer was used as an energy absorbing and
Zhiguo LU, Fuqiang GAO, Jinfu LOU, Shuangyong DONG, Xiangyuan PENG, Gang BAI, Xiaoqing WANG, Lei YANG, Yukai FU   +8 more
doaj   +1 more source

Strikes in Russia : the case of the coal-mining industry [PDF]

This thesis presents an analysis of the character and significance of strikes in post- Soviet Russia on the basis of a series of case studies of strikes in the coal-mining industry.
Borisov, Vadim
core  

Updated facility‐level inventory and LCIA of the public electricity grid in Ontario, Canada

The Canadian Journal of Chemical Engineering, EarlyView.
Abstract As the composition of Ontario's electricity grid will change over time, it is important to have a comprehensive understanding of the environmental impacts of Ontario's electricity grid as it stands today. However, publicly available information on impacts of Ontario's electricity grid is available only in aggregate from government sources.
Jamie Rose, Thomas A. Adams II, Giancarlo Dalle Ave   +2 more
wiley   +1 more source

Research on intelligent conveying technology of 500 m ultra-long face scraper

Meitan kexue jishu
In the field of medium and thick coal seam mining, intelligent mining of ultra-long face is the development trend of coal mining technology, and intelligent transportation is an important part of it.Based on the summary of the problems of the scraper ...
Weixiu CUI, Runqing MU, Hongzhang XIE, Shiyuan YAN   +3 more
doaj   +1 more source

Have Prices of Internationally Traded Steam Coal been Marginal Cost Based? [PDF]

During 2007 and 2008 steam coal prices soared to unprecedented levels. Since then much has been speculated about the drivers of these price peaks. This paper is concerned with the costs of steam coal allocation in the seaborne market and their influence ...
Trueby, Johannes, Paulus, Moritz
core  

Tailoring phosphate mining waste into high‐performance geopolymers: A sustainable process for selective CO2/N2 separation

The Canadian Journal of Chemical Engineering, EarlyView.
Overview of the synthesis, structural features, and CO2 capture performance of geopolymer‐based adsorbents prepared from phosphate mining waste, including granular and spherical materials with high surface area, CO2 capture capacity, and CO2/N2 selectivity.
Alisson Lopes Freire, Mariana Schneider, Ramon Vinícius Santos de Aquino, Enrique Rodríguez‐Castellón, Tirzhá Lins Porto Dantas, Bruno Francisco Oechsler, Humberto Jorge José, Regina de Fátima Peralta Muniz Moreira   +7 more
wiley   +1 more source

Study on the evolution law of acoustic emission time series characteristics of coal-rock assemblage under true triaxial conditions

Frontiers in Earth Science
IntroductionThis study aims to investigate the fractal characteristics of acoustic emission (AE) signals during coal-rock rupture and their predictive significance for impact dynamic hazards.MethodsTrue triaxial loading/unloading tests were conducted on ...
Fuquan Gao, Chenyang Zhang, Chenyang Zhang, Lingchen Han, Yongxue Xia, Yongxue Xia, Quanwu Gao, Yiqun Zhou, Yiqun Zhou, Dingyi Li, Dingyi Li   +10 more
doaj   +1 more source

Monitoring Carbon Risk: Auditor Pricing of Stranded Asset Exposure in U.S. Energy Firms

Corporate Social Responsibility and Environmental Management, EarlyView.
ABSTRACT This paper examines whether external auditors incorporate carbon asset risk disclosures (CARD) when assessing a client's exposure to stranded asset risks and how these disclosures influence audit pricing decisions. Using data from Ceres' Sustainability Disclosure Search Tool, we assess a firm's CARD specificity by analyzing the proportion of ...
Sabrine Ayed, Walid Ben‐Amar, Yang Stephanie Liu   +2 more
wiley   +1 more source

Research and application practice of digital intelligent technology and complete set of equipment for efficient coalmining

Meitan xuebao
Summarizing the current development status of intelligent and digital technologies in the coal industry, analyzing the new situations and requirements for research and application of intelligent technologies and complete sets of equipment for efficient ...
Guofa WANG, Jinhu ZHANG, Huaiwei REN, Yibo DU, Desheng ZHANG, Ruyu YAN, Xiang YU   +6 more
doaj   +1 more source