Results 131 to 140 of about 390,267 (306)

Strength distribution of cemented waste rock backfill: a similarity simulation experiment

Frontiers in Earth Science
Backfill of cemented waste rock into underground mined-out areas is an effective way to eliminate solid wastes and potential hazards in mines. To understand the backfill strength distribution law throughout the stope, similarity simulation experiments ...
Zhong Gao, Mingqing Huang, Shulin Zhan, Wei Tan   +3 more
doaj   +1 more source

Socioenvironmental implications of Jatropha curcas cultivation for biodiesel supply in postmining communities

Biofuels, Bioproducts and Biorefining, EarlyView.
Abstract The long‐term viability of Jatropha curcas as a biodiesel feedstock has been widely debated. Many early initiatives failed to deliver consistent economic returns despite promising environmental attributes. This study re‐evaluated J. curcas‐based systems within an integrated environmental–economic framework, focusing on their potential role in ...
Eduardo Sansão Sozinho Maurício, Ronaldo Carrion, Célio Bermann, Nildeir Silva   +3 more
wiley   +1 more source

Approach to development of phase composition reference samples from the reference samples of elemental composition of gold processing technology products

Стандартные образцы, 2017
The paper describes the results of standardless quantitative XRD phase analysis (QPA) of 5 reference samples of elemental composition of sulphidic ore and technological products from Olimpiada gold deposit.
I. S. Yakimov, S. D. Kirik, P. S. Dubinin, O. E. Piksina, T. A. Babkina, S. I. Savushkina   +5 more
doaj  

Study of a static screen, jig, spiral, and a compound water cyclone in a placer gold recovery plant [PDF]

, 1987
During the 1986 mining season both laboratory and field test work were conducted to study the performance efficiencies of a wedge-wire static screen, a Pan-American jig, a Reichert Mark VII spiral, and a 12" compound water cyclone.
Cook, D.J., Rao, P.D., Walsh, D.E.
core  

Effectiveness of Scientific Literacy and Communication E‐Modules in a Molecular Biology Course: A Qualitative and Quantitative Analysis

Biochemistry and Molecular Biology Education, EarlyView.
ABSTRACT In previous work, we described the development and implementation of new pedagogical practices aimed at enhancing literacy, critical thinking, and communication skills development in a third‐year undergraduate molecular biology course. The online nature and large size of the course presented challenges regarding student engagement and access ...
Meghan Kates, Alexa Fitzpatrick, Yupeng Zhang, Alison Gibbs, Qin Liu, Alan da Silveira Fleck, Leora Freedman, Stavroula Andreopoulos   +7 more
wiley   +1 more source

Decision-making model for production and operation of underground gold mines considering low-carbon condition

Scientific Reports
Within the framework of a low-carbon transition and integrated mineral resource exploitation, this study presents an innovative system dynamics (SD) model designed to optimize decision-making and enhance profitability in underground gold mining ...
Jie Hou, Yingyu Gu, Guoqing Li, Guangjun Guo, Qianqian Yu   +4 more
doaj   +1 more source

Flotation of an Arsenic Bearing High Sulfur Gold Mine in Gansu Province

Kuangchan zonghe liyong
This is an article in the field of mineral processing engineering. The gold mineral in an arsenic bearing high sulfur gold mine has a close symbiotic relationship with pyrite and arsenopyrite, and the recovery rate of concentrate gold is not ideal in the
Yanbo CHEN, Guangsheng LI, Xingfu ZHU, Qing XU   +3 more
doaj   +1 more source

Does Sustainability Auditing Lead to Enhanced Corporate Governance, Environmental Performance, and Financial Outcomes? Empirical Evidence From High‐Impact Industries

Business Strategy and the Environment, EarlyView.
ABSTRACT This study employs hierarchical regression modelling on a survey of 550 firms from Nigeria and Ghana to examine the impact of sustainability auditing on corporate governance, environmental performance, and financial outcomes of high‐impact industries.
Mandella Osei‐Assibey Bonsu, Ying Wang, Grace Eghe‐Ikhurhe, Katie Hyslop   +3 more
wiley   +1 more source

Digital Transformation on Green Operational Performance: Evidence From the E‐Waste Firm's Perspective

Business Strategy and the Environment, EarlyView.
ABSTRACT Digital transformation (DT) is increasingly recognised as essential for improving environmental performance in process‐intensive and hazardous sectors; however, the mechanisms by which digitalisation translates into green operational performance (GOP) and environmental accountability remain insufficiently investigated, particularly in ...
Amila Kasun Sampath Udage Kankanamge, Michael Odei Erdiaw‐Kwasie, Matthew Abunyewah   +2 more
wiley   +1 more source

Fractal evolution characteristics of fracture meso-damage in uniaxial compression rock masses using bonded block model

Scientific Reports
With regard to deep mining in metal mines, an investigation into the failure mode of deep fractured rock masses and their corresponding acoustic emission signal characteristics is conducted via uniaxial compression tests.
Ming Lan, Yan He, Chunlong Wang, Xingquan Liu, Guoqing Ren, Shuwen Zhang   +5 more
doaj   +1 more source