Results 1 to 10 of about 8,735 (91)

Análisis de la microestructura de humos de soldadura de aceros de bajo y medio contenido de carbon

open access: yesRevista de Metalurgia, 2021
En este estudio, la muestra de humo de soldadura se obtuvo a partir de aceros de bajo y medio carbono y los electrodos utilizados en la soldadura. Las microestructuras de las partículas se analizaron mediante microscopía electrónica de barrido (SEM ...
Bekir Güney
doaj   +1 more source

Optimización de parámetros para la extracción de elementos desde minerales en medios ácido [PDF]

open access: yes, 2020
[SPA] Esta tesis doctoral se presenta bajo la modalidad de compendio de publicaciones. Actualmente, la gran minería del cobre chilena se encuentra frente a nuevos problemas y desafíos a superar.
Toro Villarroel, Norman Rodrigo
core   +2 more sources

Recent Developments in Synthesis and Photocatalytic Applications of Carbon Dots [PDF]

open access: yes, 2020
The tunable photoluminescent and photocatalytic properties of carbon dots (CDs) via chemical surface modification have drawn increased attention to this emerging class of carbon nanomaterials.
Boonsith, Suthida   +4 more
core   +1 more source

Optimization of parameters for the dissolution of Mn from manganese nodules with the use of tailings in an acid medium [PDF]

open access: yes, 2019
Manganese nodules are an attractive source of base metals and critical and rare elements and are required to meet a high demand of today’s industry. In previous studies, it has been shown that high concentrations of reducing agent (Fe) in the system are ...
Castillo Segura, Jonathan Alejandro   +6 more
core   +1 more source

Development of an analytical model for the extraction of manganese from marine nodules [PDF]

open access: yes, 2019
Multivariable analytical models provide a descriptive (albeit approximate) mathematical relationship between a set of independent variables and one or more dependent variables.
Castillo Segura, Jonathan Alejandro   +5 more
core   +2 more sources

Geochemical Characteristics of Limestone of Wonosari-Punung Formation, Gunungkidul Regency, Yogyakarta, Indonesia

open access: yesIndonesian Journal on Geoscience, 2018
DOI: 10.17014/ijog.5.2.179-197A geochemical study was carried out to determine the geochemical characteristics of limestone in Wonosari-Punung Formation, and to suggest its depositional conditions and the source of rare earth elements.
Didik Dwi Atmoko   +2 more
doaj   +1 more source

Printable magnesium ion quasi-solid-state asymmetric supercapacitors for flexible solar-charging integrated units. [PDF]

open access: yes, 2019
Wearable and portable self-powered units have stimulated considerable attention in both the scientific and technological realms. However, their innovative development is still limited by inefficient bulky connections between functional modules ...
Kaner, Richard B   +8 more
core   +1 more source

Transmission electron microscopy analysis of some transition metal compounds for energy storage and conversion [PDF]

open access: yes, 2017
This work was preliminarily supported by the National Key Research Program of China (2016YFA0202604), the Natural Science Foundation of China (21476271), NSFC-RGC (21461162003) and Natural Science Foundation (2014KTSCX004 and 2014A030308012) of Guangdong
Fan, Wenjie   +4 more
core   +1 more source

First row transition metal catalysts for solar-driven water oxidation produced by electrodeposition [PDF]

open access: yes, 2016
As our reliance on renewable energy resources increases, so will our need to store this energy in the form of chemical fuels to iron-out peaks and troughs in supply.
Roger, Isolda, Symes, Mark D.
core   +1 more source

An innovative concept of use of redox-active electrolyte in asymmetric capacitor based on MWCNTs/MnO(2) and Fe(2)O(3) thin films [PDF]

open access: yes, 2016
In present investigation, we have prepared a nanocomposites of highly porous MnO2 spongy balls and multi-walled carbon nanotubes (MWCNTs) in thin film form and tested in novel redox-active electrolyte (K3[Fe(CN)6] doped aqueous Na2SO4) for supercapacitor
Chodankar, N.   +5 more
core   +3 more sources

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