Results 1 to 10 of about 154,974 (167)
La zaratita de Cabo Ortegal (A Coruña): historia de su descubrimiento y caracterización actual [PDF]
Estudios Geologicos, 2014 La zaratita, Ni3CO3(OH)4.4H2O es uno de los pocos minerales descubiertos en España. Por ser una fase de baja cristalinidad y presentar una composición química variable según los diferentes yacimientos, la International Mineralogical Association (IMA ...
A. La Iglesia +2 more
doaj +4 more sources
USE OF AGENTS OXIDANTS/PRECIPITATING PERMANGANATE/ CARBONATE PEROXIDE /UREA FOR SELECTIVE PRECIPITATION OF CERIUM ION [PDF]
Tecnologia em Metalurgia, Materiais e Mineração, 2014 The separation of mixtures of rare earth elements (REE) is difficult to perform due to the similarities of their chemical and physical properties. Literature report the particular property in Ce ion oxidize in contact with strong oxidizing agents and ...
Flávia Alves Ferreira +2 more
doaj +1 more source
A DFT Study of the Reaction of Acrylamide with L-Cysteine and L-Glutathione
Molecules, 2022 Thermal processing of certain foods implies the formation of acrylamide, which has been proven to provoke adverse effects on human health. Thus, several strategies to mitigate it have been developed.
Sandra Ramirez-Montes +4 more
doaj +1 more source
Membranes, 2023 Water polluted by discarded heavy metals such as lead is creating a global pollution problem. In this work, adsorption of Pb(II) was realized in batch studies by a hybrid membrane of cellulose acetate with ZnO particles.
Irma Pérez-Silva +3 more
doaj +1 more source
MULTI-INSTRUMENTAL IDENTIFICATION OF ORPIMENT IN ARCHAEOLOGICAL MORTUARY CONTEXTS [PDF]
, 2014 Indexación: Web of Science; Scielo.This paper reports on an unknown yellowish mineral compound found in an archaeological context from Chorrillos cemetery (Calama, Chile) dating to the Early Formative period (800 - 200 B.C.).
ARRIAZA, BERNARDO +6 more
core +1 more source
ESTUDO DE BENEFICIAMENTO QUÍMICO E FÍSICO E CARACTERIZAÇÃO DE BAUXITAS DO PARÁ
Holos, 2012 As camadas de bauxita cristalizada (BC) e bauxita cristalizada amorfa (BCA) que compõem o perfil geológico do nordeste do Pará foram submetidas às etapas de beneficiamento e adequadas aos ensaios de bancada, sendo submetidas ao estudo da influência do pH
Diego Seixas Gomes Almeida +5 more
doaj +1 more source
Geogaceta, 2023 Los xenolitos granulíticos del volcán de La Encomienda (Campo Volcánico de Calatrava) representan un conjunto de composición félsica peralumínica.
David Orejana García +2 more
doaj +1 more source
Effect of dietary organic and inorganic selenium supplementation on chemical, mineral and fatty acid composition of ostrich meat [PDF]
, 2015 This study evaluated the effect of dietary organic and inorganic selenium supplementation on chemical, mineral and fatty acid composition of ostrich meat.
De Smet, Stefaan +7 more
core +1 more source
Mineral chemistry of late Variscan gabbros from central Spain: constraints on crystallisation processes and nature of the parental magmas [PDF]
, 2015 © 2016. Universidad Complutense de Madrid. The commercial rights of the printed and online versions of Journal of Iberian Geology are property of the Universidad Complutense de Madrid (UCM) and the Consejo Superior de Investigaciones CientÍficas (CSIC),
Jeffries, T +3 more
core +3 more sources
Holos, 2014 Neste trabalho, as etapas de beneficiamento e de caracterização do quartzo de Tanhaçu/BA foram realizadas com o propósito de utilizá-lo como matéria-prima para a obtenção de um silício grau metalúrgico (SiGM) com baixo nível de impurezas.
Fernanda Arruda Nogueira Gomes Silva +5 more
doaj +1 more source