Results 31 to 40 of about 491,518 (301)

Scientific Opinion on safety and efficacy of coated granulated cobaltous carbonate monohydrate as feed additive for all species [PDF]

open access: yesEFSA Journal, 2012
<p>Cobalt(III) is a component of cobalamin. Its essentiality as trace element results from the capacity of certain animal species to synthesise cobalamin by the gastrointestinal microbiota.
EFSA Panel on Additives and Products or Substances used in Animal Feed
doaj   +1 more source

Original Conductive Nano-Co3O4 Investigated as Electrode Material for Hybrid Supercapacitors [PDF]

open access: yes, 2011
Cobalt oxides have been extensively used as conductive additives for Ni-MH batteries. We report in this paper the performances of an original nanometric cobalt oxide, close to Co3O4, as electrode material for hybrid supercapacitors.
Delmas, Claude   +4 more
core   +3 more sources

Copyright and Free Speech: The Human Rights Perspective

open access: yesBaltic Journal of Law & Politics, 2015
The relationship between copyright and freedom of expression has long been debated. Unlike the legal discourse in other jurisdictions, most notably the United States, where it is assumed that free speech and copyright do not collide, in Europe both ...
Krisjanis Buss
doaj   +1 more source

Bifunctional earth-abundant phosphate/phosphide catalysts prepared via atomic layer deposition for electrocatalytic water splitting [PDF]

open access: yes, 2019
The development of active and stable earth-abundant catalysts for hydrogen and oxygen evolution is one of the requirements for successful production of solar fuels.
Dendooven, Jolien   +7 more
core   +2 more sources

An in situ XAS study of the cobalt rhenium catalyst for ammonia synthesis [PDF]

open access: yes, 2018
A cobalt rhenium catalyst active for ammonia synthesis at 400 °C and ambient pressure was studied using in situ XAS to elucidate the reducibility and local environment of the two metals during reaction conditions.
Granlund Kirste, Karsten   +6 more
core   +3 more sources

Removal and Recycling of Antimony in a Gold Concentrate

open access: yesKuangchan zonghe liyong
In this article, antimony was removed from the gold concentratebythe alkali leaching method, and then the recovery of antimony solution was also studied.
Jinquan GUO   +5 more
doaj   +1 more source

Optimization of the effect and formulation of different coarse aggregates on performance of the paste backfill condensation

open access: yes工程科学学报, 2020
Hydration and setting time of paste-like backfill slurry in the Gansu Province’s Jinchuan copper and nickel mine is slow, and the degree of segregation of coarse aggregate is high, seriously affecting the quality of cemented paste backfill. In this paper,
Sheng-hua YIN   +5 more
doaj   +1 more source

The mathematical description of the electrosynthesis of composites of oxy-hydroxycompounds cobalt with polypyrrole overooxidazed [PDF]

open access: yes, 2016
The electrosynthesis of the composite with of the overoxidized polypyrrole with cobalt oxy-hydroxide in strongly acidic media has been described mathematically, using linear stability theory and bifurcation analysis. The steadystates stability conditions
Maia, J.   +5 more
core   +2 more sources

Electron correlation effects in cobalt fluorides CoFn [PDF]

open access: yes, 2020
The molecular cobalt fluorides CoF2, CoF3 and CoF4 are studied and compared by employing different basis sets as well as Quantum Information Theory (QIT) to investigate their correlation effects. These prototypical monomers may be systematically extended
Paulus, Beate, Stemmle, Christian
core   +1 more source

Review on recovery of valuable metals from complex copper–cobalt co-associated mines

open access: yes工程科学学报
Copper and cobalt, both strategic metals, play an indispensable role in many fields, such as national infrastructure and defense science and technology. Copper, one of the earliest nonferrous metals discovered, extracted, and applied by humans, teams up ...
Xiang LI   +5 more
doaj   +1 more source

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