Results 31 to 40 of about 398,560 (209)

Effects of external dynamic disturbances and structural plane on rock fracturing around deep underground cavern

open access: yesInternational Journal of Coal Science & Technology, 2022
The occurrence of disasters in deep mining engineering has been confirmed to be closely related to the external dynamic disturbances and geological discontinuities. Thus, a combined finite-element method was employed to simulate the failure process of an
Fan Feng   +5 more
doaj   +1 more source

Thermal Conductivity Model Analysis of Unsaturated Ice-Containing Soil

open access: yesGeofluids, 2022
In cold locales, the thermal conductivity of soil porous media varies according to their composition and the phase state of the substance contained within the pore space.
Qiang Han, Zhiguo Wang, Rui Qin
doaj   +1 more source

Evaluation of worker exposures to nickel during the plating, machining, and facrication [sic] of nickel plated metal [PDF]

open access: yes, 2001
Plan BThe goal of this study was to assist a company involved in nickel plating, machining, and fabricating of nickel plated metal, in evaluating and reducing its employee exposure to nickel concentrations in the affected work areas.
Keyes, Jeff
core  

Zigzag-shaped nickel nanowires via organometallic template-free route [PDF]

open access: yes, 2013
In this manuscript, the formation of nickel nanowires (average size: several tens to hundreds of μm long and 1.0-1.5 μm wide) at low temperature is found to be driven by dewetting of liquid organometallic precursors during spin coating process and by ...
Shviro, Meital   +7 more
core   +1 more source

Chronic effects of intratracheally instilled nickel-containing particles in hamsters [PDF]

open access: yes, 2022
S.467-479Only limited information is available concerning whether a potential carcinogenic risk is associated with exposure to particles of nickel alloys.
Pott, F.   +5 more
core  

Foro Abierto de la Universidad de Concepción: antecedentes preliminares para una problematización de su intervención patrimonial

open access: yesUrbe, 2021
El Foro Abierto es el espacio público de la Universidad de Concepción (región del Biobío, Chile) con mayor significación ciudadana. Al estar protegido por su calidad de Monumento Histórico, sus intervenciones deben enmarcarse en guías institucionales ...
Meliza Nickel
doaj   +1 more source

Nickel laterite processing technologies – where to next? [PDF]

open access: yes, 2010
A review has been completed of current and proposed processing technologies for nickel laterite ores. Although future supplies of nickel depend on laterite ores, their processing is inherently energy intensive and expensive as, unlike sulphide ores ...
Kyle, J.
core   +1 more source

Mine design and process engineering solutions for copper-nickel ore quality management in underground mining

open access: yesГорные науки и технологии
Declining ore grades at the Norilsk deposits are accompanied by increasing variability in the quality of mined ore and deterioration in the quality of saleable products.
N. A. Turtygina   +3 more
doaj   +1 more source

Investigation of electroless nickel undercoat for duplex nickel chromium electrodeposition onto aluminium and its alloys [PDF]

open access: yes, 2009
A thesis submitted in partial fulfillment of the requirement of the University of Wolverhampton for the Degree of Master of Philosophy.The study investigates the deposition of a multilayer coating onto two aluminium alloys: Al 1050 and Al 6061.
Muhammad Enam Khan, Khan, Muhammad Enam
core  

Research on condition monitoring and fault diagnosis of intelligent copper ball production lines based on big data

open access: yesIET Collaborative Intelligent Manufacturing, 2022
With the continuous upgrading and transformation of the intelligentisation of China's manufacturing industry, and in response to the requirements for further intelligentisation of the phosphor copper ball production line proposed by a new electronic ...
Zhongke Zhang, Zhao Li, Changzhong Zhao
doaj   +1 more source

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