Results 1 to 10 of about 1,765,958 (358)

Trace element composition and genesis mechanism of the Fuli Pb-Zn deposit in Yunnan: LA-ICP-MS and in situ S-Pb isotopic constraints

Frontiers in Earth Science, 2023
The Fuli Pb-Zn deposit in Yunnan is located in the southeast of the Sichuan-Yunnan-Guizhou (SYG) Pb-Zn metallogenic province in South China. Lead and zinc reserves total approximately 0.3 million tons with an average grade of 18.68% Pb+Zn. The stratiform
Xingyu Liang, Bo Li, Xinyue Zhang, Huaikun Qin, Gao Li, Chengnan Zhang   +5 more
doaj   +1 more source

Numerical Modeling of Rock Panels Subjected to Blast Loadings

Advances in Civil Engineering, 2022
In rock engineering problems, the rock is usually subjected to dynamic loads induced by drill, blast and rockburst. Therefore, understanding the dynamic response of rock benefit the safety and productivity of excavation activities.
Haijun Wang, Daiyu Xiong, Yun Duan, Weiqin Cao, Wenru Zhang, Peng Jiao, Bonan Wang, Xulin Zhao, Yonggang Miao, Le Zhou   +9 more
doaj   +1 more source

Selective leaching of Mo from an off-grade gravity lead concentrate in Na2CO3 solution [PDF]

Journal of Mining and Metallurgy. Section B: Metallurgy, 2019
The selective leaching of Mo from an off-grade gravity lead concentrate was investigated in Na2CO3 solution using air as an oxidant. The leaching behaviors of Mo and Pb were predicted by the thermodynamic phase diagrams of Pb-Mo-C-H2O system.
Liu Z.-X., Luo Y.-T., Luo W.-B., Li B.-X., Wu X.-W.   +4 more
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Stress background and rock fractures revealed by ultrasonic borehole television in the Fankou Lead-Zinc Mine

Frontiers in Earth Science, 2023
The stress background and rock fractures are essential factors affecting the stability of mines. In order to better understand the in situ stress background and rock fractures in the Guangdong Fankou Mine, we use ultrasonic borehole television scanning ...
Yi Du, Yi Du, Chengfei Wu, Chenghu Wang, Guiqiang Yuan, Shiyuan Ouyang, Jie Liao, Yifei An   +7 more
doaj   +1 more source

Replacement of reserves zinc based on the recycling of technogenic raw materials [PDF]

Экономика региона, 2013
In the article, the perspective trends of the expansion of the mineral-ore base of the Russian producers of zinc by recycling of technogenic raw materials are considered.
Olga Sergeevna Bryantseva, Valery Grigoryevich Dyubanov, Andrey Mikhaylovich Panshin, Pavel Aleksandrovich Kozlov   +3 more
doaj   +1 more source

A review of the Discrete Element Method/Modelling (DEM) in agricultural engineering

Journal of Agricultural Engineering, 2023
With the development of high-performance computing technology, the number of scientific publications regarding computational modelling of applications with the Discrete Element Method/Modelling (DEM) approaches in agricultural engineering has risen in ...
Qing Guo, Huihuang Xia
doaj   +1 more source

The Therapeutic Effect of Zinc Sulfate on Neonatal Hyperbilirubinemia [PDF]

Iranian Journal of Neonatology, 2017
Background: Approximately 60% of term neonates and 80% of preterm ones suffer from hyperbilirubinemia in theirfirst week of life. This study sought to characterize the therapeutic effect of oral zinc sulfate on neonatalhyperbilirubinemia.Methods: In this
Somayyeh Hashemian, Ashraf Mohammadzadeh, Ahmadshah Farhat, Mohammad Ramezani, Seyed Javad Seyedi   +4 more
doaj   +1 more source

Modelling the Effect of Solution Composition and Temperature on the Conductivity of Zinc Electrowinning Electrolytes

Metals, 2021
Zinc electrowinning is an energy-intensive step of hydrometallurgical zinc production in which ohmic drop contributes the second highest overpotential in the process.
Zulin Wang, Arif Tirto Aji, Benjamin Paul Wilson, Steinar Jørstad, Maria Møll, Mari Lundström   +5 more
doaj   +1 more source

A Novel Neuroprotective Mechanism of Riluzole: Direct Inhibition of Protein Kinase C

Neurobiology of Disease, 2000
In addition to its antiexcitotoxic action, the anti-amyotrophic lateral sclerosis (ALS) neuroprotectant riluzole protects against nonexcitotoxic oxidative neuronal injury.
Kyung-Min Noh, Jee-Yeon Hwang, Hyung-Cheul Shin, Jae-Young Koh   +3 more
doaj   +1 more source

Evaluation of Excavation-Damaged Zone around Underground Tunnels by Theoretical Calculation and Field Test Methods

Energies, 2019
Excavation-damaged zones (EDZs) induced in underground mining and civil engineering potentially threaten tunnel safety and stability, and increase construction and support costs. In this paper, an investigation of the excavation damaged zone (EDZ) around
Ming Tao, Zhixian Hong, Kang Peng, Pengwei Sun, Mingyu Cao, Kun Du   +5 more
doaj   +1 more source