Results 31 to 40 of about 251,192 (298)

Annealing of amorphous FexCo100-x nanoparticles synthesized by a modified aqueous reduction using NaBH4 [PDF]

open access: yes, 2010
FexCo100−x nanoparticles were synthesized by aqueous reduction in iron (II) sulfate and cobalt (II) sulfate using sodium borohydride and sodium citrate.
Brown III, L. W.   +6 more
core   +2 more sources

Influence of chromium (III), cobalt (II) and their mixtures on cell metabolic activity

open access: yesCurrent Issues in Pharmacy and Medical Sciences, 2021
Chromium (III) and cobalt (II) are necessary elements required for the proper functioning of the organism, but their excess can cause toxic effects. They are the basic components of implants and are also commonly used in medicine as components of dietary
Czarnek Katarzyna, Siwicki Andrzej K.
doaj   +1 more source

Electrocarboxylation of chloroacetonitrile by a Cobalt(I) complex of terpyridine [PDF]

open access: yes, 2011
The electrocarboxylation of chloroacetonitrile (NC–CH2–ClRCl) mediated by [CoIIL2]2+ (L = terpyridine) was investigated by cyclic voltammetry. Electrochemical studies under argon atmosphere showed that the monoelectronic reduction of [CoIIL2]2+ yielded a
Chen, Dancheng   +2 more
core   +2 more sources

Diaquabis(2,2′-biimidazole)cobalt(II) dichloride [PDF]

open access: yesActa Crystallographica Section E Structure Reports Online, 2008
There are independent cations and four chloride anions in the crystal structure of the title complex, [Co(C(6)H(6)N(4))(2)(H(2)O)(2)]Cl(2). In each cation, the Co(II) cation is coordinated by four N atoms from two biimidazole and two O atoms of two water mol-ecules; one Co atom is at a position of site symmetry m, the other at a position of site ...
Zhang, Lan-Cui   +4 more
openaire   +2 more sources

Scientific Opinion on safety and efficacy of cobalt compounds (E3) as feed additives for all animal species: Cobaltous acetate tetrahydrate, basic cobaltous carbonate monohydrate and cobaltous sulphate heptahydrate, based on a dossier submitted by TREAC EEIG [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

Catalytic Conversion of Methane and Carbon Dioxide (Greenhouse Gases) into Syngas over Samarium-Cobalt-Trioxides Perovskite Catalyst [PDF]

open access: yes, 2017
The catalytic behaviour of samarium-cobalt-trioxides perovskite catalyst was investigated for the mitigation of greenhouse gases (carbon dioxide and methane) to provide cleaner energy (hydrogen and carbon monoxide) and environment.
Cheng, C. K., Osazuwa, Osarieme U.
core   +1 more source

Potentiometric study of complexation between taurine and metal ions [PDF]

open access: yes, 2013
The protolytic and complexation properties of taurine are studied by a potentiometric method. The dissociation constants of 2-aminoethanesulfonic acid functional groups and the stability constants of taurine complexes with copper(II), cobalt(II), nickel ...
Neudachina, L. K., Petrova, Yu. S.
core   +1 more source

Synthesis and Oxidation ofCobalt(II) Pheophytin-α Complex

open access: yesE-Journal of Chemistry, 2011
The mechanism of oxidation of natural pheophytin-a incorporated with cobalt as the central metal ion has been investigated. Natural pheophytin-aextracted from spinach was metallated with cobalt(II) to form the complex, cobalt(II) pheophytin-α [Cophe ...
Ezekiel D. Dikio, David A. Isabirye
doaj   +1 more source

Modification of natural zeolite for effective removal of Cd(II) from wastewater [PDF]

open access: yesJournal of Water and Environmental Nanotechnology, 2018
In the current research work the Iranian natural zeolite (clinoptililite) was modified with Cobalt Hexacyanoferrate nanopatricles. The natural and Cobalt Hexacyanoferrat modifed zeolites were characterized by FTIR and SEM techniques  and were empolyed as
Taher Yousefi   +4 more
doaj   +1 more source

Synthesis and antibacterial effects of cobalt–cellulose magnetic nanocomposites [PDF]

open access: yes, 2017
© The Royal Society of Chemistry. Green synthesis is employed to prepare cobalt/cellulose nanocomposites with cubic (α-cobalt) cobalt as a main component with antibacterial and magnetic properties. An in situ reduction of aqueous solutions of cobalt ions
Alahmadi, N. S.   +12 more
core   +2 more sources

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