Results 21 to 30 of about 11,180,393 (312)

Investigation of rare earth elements in drinking water of typical rare earth mining and non-mining areas in three provinces of China

Zhongguo shipin weisheng zazhi, 2021
ObjectiveTo explore the concentrations of rare earth elements (Rare earth elements, REEs) in drinking water in rare earth mining and non-mining areas in Shandong, Guangdong, and Jiangxi provinces of China.MethodsTypical rare earth mining areas and 3 non ...
LOU Minhan, WANG Yibaina, SUI Haixia, MAO Weifeng, ZHANG Lei, LIU Zhaoping, WANG Yin, YONG Ling, SONG Yan   +8 more
doaj   +1 more source

Calculate missing value using association rules mining [PDF]

, 2010
Discovering hidden knowledge from hug amount of data in form of association rules mining havebecome very popular in scaling field of data mining. One several algorithms have been alsodeveloped for mining association rules.
Singh, Manmohan; Mewar University, Rajasthan., Shrivastava, Pooja; Barkatullah University, Bhopal. India, Rajput, Anil; Department of Mathematics and Computer Science Govt. PG Nodal College, Sehore (M. P.) India   +2 more
core   +1 more source

Elements in the Hair of Non-Mining Workers of a Lignite Open Mine in Neyveli

INDUSTRIAL HEALTH, 2003
Trace elements are analyzed in the human scalp hair to assess the extent of body burden of pollution. The levels of seven elements (Cd, Cr, Cu, Mn, Ni, Pb and Zn) were determined in the hair of fishermen from Pondicherry, students and businessmen from Madras and non-mining workers from Neyveli lignite open mine.
SUKUMAR, Athimoolam, SUBRAMANIAN, Ramachandran   +1 more
openaire   +3 more sources

Airway responsiveness and job selection: a study in coal miners and non-mining controls. [PDF]

Occupational and Environmental Medicine, 1995
BACKGROUND--It has been suggested that health related job selection is a major cause of the healthy worker effect, and may result in inaccurate estimates of health risks of exposures in the working environment. Improved understanding of self selection, including the role of airway hyperresponsiveness, should improve accuracy in estimating occupational ...
E L, Petsonk, E M, Daniloff, D M, Mannino, M L, Wang, S R, Short, G R, Wagner   +5 more
openaire   +2 more sources

Effects of controllable shock wave on particle size characteristics of tin polymetallic ore crushing products

Journal of Materials Research and Technology, 2023
Different minerals in tin polymetallic ores have varying degrees of grindability. When the particle size distribution of the crushed ore is unreasonable, sufficient liberation of useful minerals necessitates an increase in the grinding time, resulting in
Shuai Ma, Jiushuai Deng, Dingquan Xing, Yongmin Zhang, Jing Ren, Mingzhen Hu, Yan Huang, Bozeng Wu   +7 more
doaj   +1 more source

Study on Calculation Method of Heat Exchange Capacity and Thermal Properties of Buried Pipes in the Fractured Rock Mass-Taking a Project in Carbonate Rock Area as an Example

Energies, 2023
Fractures are developed in carbonate rock areas, and the fracture water flow significantly influences the heat exchange between buried pipes and the rock mass by induing heat convection, providing the carbonate rock area a strong heat exchange capacity ...
Lin Wang, Yonglin Ren, Fengqiang Deng, Yiqiang Zhang, Yan Qiu   +4 more
doaj   +1 more source

Microstructure and Mechanical Properties of Novel Heat Resistant Cast Al-Cu-Yb(Gd)-Mg-Mn-Zr Alloys

Metals, 2022
The present study focused on the development of the novel heat resistant cast Al-Cu-Yb(Gd)-Mg-Mn-Zr alloys based on the prevue investigations. Microstructures and mechanical properties were investigated by optical, scanning and transmission electron ...
Olga I. Mamzurina, Sayed M. Amer, Maria V. Glavatskikh, Ruslan Yu. Barkov, Irina S. Loginova, Andrey V. Pozdniakov   +5 more
doaj   +1 more source

Critical-Element Deportment in Porphyry and Skarn Copper Ores: Evidence from Three Kazakhstan Deposits

Geosciences
The growing demand for critical metals associated with the global energy transition has increased interest in their potential recovery as by-products of copper processing.
Larissa B. Kushakova, Anastassiya P. Miroshnikova, Dinara B. Kassymova, Marina A. Mizernaya, Ulyana V. Makarova   +4 more
doaj   +1 more source

Il diritto di Text and Data Mining (TDM) non esiste

Rivista Italiana di Informatica e Diritto, 2023
L’a. analizza le disposizioni della direttiva copyright nel mercato unico digitale (direttiva (UE) 2019/790: CDSMD) relative alla c.d. eccezione di Text and Data Mining al fine di stabilire se per consentire le attività tecniche implicate dalle ...
Salvatore Orlando
doaj   +1 more source

Valuing the Non-Market Impacts of Underground Coal Mining [PDF]

This paper has been published in a peer-reviewed journal as: Gillespie, R. & M. E. Kragt (2012). "Accounting for nonmarket impacts in a benefit-cost analysis of underground coal mining in New South Wales, Australia." Journal of Benefit-Cost Analysis 3(2):
Gillespie, Robert, Kragt, Marit Ellen
core   +1 more source