Results 11 to 20 of about 398,560 (209)

Valoración del sistema de monitoreo implementado en la presa de colas de la fábrica Pedro Sotto Alba

open access: yesCiencia & Futuro, 2022
Se evaluaron los métodos de monitoreo existentes, funcionamiento y nivel de influencia en la estabilidad física para la prevención, corrección o mitigación de riesgos por fallos de la presa de colas de la empresa Pedro Sotto Alba de Moa. El procesamiento
Yailan Cantillo-Frómeta   +3 more
doaj   +2 more sources

Nickel metallochaperones: Structure, function, and Nickel-binding properties [PDF]

open access: yes, 2017
Nickel-containing enzymes catalyze a series of important biochemical processes in both prokaryotes and eukaryotes. The maturation of the enzymes requires the proper assembly of the nickel-containing active sites, which involves a battery of nickel ...
Wei Xia   +5 more
core   +1 more source

THE DETERMINATION OF NICKEL IN NICKEL ORES. [PDF]

open access: yesJournal of the American Chemical Society, 1900
n ...
openaire   +1 more source

Rockburst management in Canadian hard rock mines

open access: yesJournal of Rock Mechanics and Geotechnical Engineering, 2019
Rockburst is a complex mining-induced phenomenon that remains difficult to be quantified. In particular, geological conditions contributing to rockbursts are more variable than those in many conventional engineering approaches.
B.P. Simser
doaj   +1 more source

THE DETERMINATION OF NICKEL IN NICKEL-STEEL. [PDF]

open access: yesJournal of the American Chemical Society, 1899
n ...
openaire   +2 more sources

Electrochemical oxidation of binary copper-nickel alloys in cryolite melts [PDF]

open access: yes, 2007
Anodic oxidation of copper, nickel and two copper-nickel alloys was studied in cryolite melts at 1000°C. In an oxide-free melt, anodic dissolution of each material was observed, and the dissolution potential increases with the content of copper.
Palau, Patrice   +5 more
core   +1 more source

Rheological properties and resistance evolution of cemented unclassified tailings-waste rock paste backfill

open access: yes工程科学学报, 2023
Coarse aggregate paste filling is the core direction of today’s mine development. The coarse aggregate filling can effectively reduce the discharge of the solid mine waste, which is conducive to the realization of safe, clean, and efficient mining of the
Sheng-hua YIN   +5 more
doaj   +1 more source

Nickel-Catalyzed Defluorinative Coupling of Aliphatic Aldehydes with Trifluoromethyl Alkenes [PDF]

open access: yes, 2022
A simple procedure is reported for the nickel-catalyzed defluorinative alkylation of unactivated aliphatic aldehydes. The process involves the catalytic reductive union of trifluoromethyl alkenes with aldehydes using a nickel complex of a 6,6 ...
John Montgomery (217551)   +3 more
core   +1 more source

Soldadura del acero ASTM 615 con diferentes tipos de electrodos

open access: yesCiencia & Futuro, 2022
Se estableció el comportamiento microestructural en barra de acero estructural del tipo ASTM A615 grado 60 G. La unión de las barras se realizó a tope con bisel a 60o con electrodos E 6010 y E 7018, se determinó el comportamiento microestructural, el ...
Gioelkis Espinosa-Batista   +3 more
doaj  

DETERMINATION OF NICKEL IN NICKEL-STEEL. [PDF]

open access: yesJournal of the American Chemical Society, 1894
n ...
openaire   +1 more source

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