Results 11 to 20 of about 47,107 (163)

Estudio de la extracción de Ni, Co y Fe en lateritas por medio de lixiviación ácida en columnas

Revista de Metalurgia, 2006
En el siguiente trabajo se plantea la posibilidad de la extracción de níquel por vía hidrometalúrgica en lateritas niquelíferas. El mineral se caracteriza con el fin de conocer su composición y estructura, por medio de difracción de rayos X, análisis ...
C. di Yorio, E. Betancourt, R. Vivas, J. Rus   +3 more
doaj   +1 more source

Allergic contact dermatitis to cobalt and nickel in a metal industry worker. Case report and literature review

Revista Alergia México, 2019
Background: Contact dermatitis is an eczematous skin reaction that is caused by repeated and direct exposure to an allergen: The prevalence of contact dermatitis to nickel is estimated at 17% in women and 3% in men, and 1-3% of the general population has
Edgar Antonio Román-Razo, Patricia María O´Farrill Romanillos, César Cambray, Andrea Herrera, Diego Mendoza-Revilla, Diana Aguirre   +5 more
doaj   +1 more source

Síntesis y caracterización del cloruro de la amina terciaria Alamine 304. Su aplicación en la extracción liquido-líquido de Co(II), Au(III) y Pt(IV)

Revista de Metalurgia, 2000
La amina Alamine 304 disuelta en xileno reacciona con el ácido clorhídrico para formar el cloruro de la amina (R3NH+Cl-) y el dicloruro de amina (R3NH2Cl2).
Aurora López-Delgado, Félix Antonio López, Francisco José Alguacil   +2 more
doaj   +1 more source

Influence of Manufacturing Methods of Implant‐Supported Crowns on External and Internal Marginal Fit: A Micro‐CT Analysis

BioMed Research International, Volume 2018, Issue 1, 2018., 2018
Aim. To evaluate the influence of different manufacturing methods of single implant‐supported metallic crowns on the internal and external marginal fit through computed microtomography. Methods. Forty external hexagon implants were divided into 4 groups (n = 8), according to the manufacturing method: GC, conventional casting; GI, induction casting; GP,
Izabela C. M. Moris, Silas Borges Monteiro, Raíssa Martins, Ricardo Faria Ribeiro, Erica A. Gomes, Nick Silikas   +5 more
wiley   +1 more source

Synthesis and Anchoring of Antineoplastic Ferrocene and Phthalocyanine Derivatives on Water‐Soluble Polymeric Drug Carriers Derived from Lysine and Aspartic Acid

Metal-Based Drugs, Volume 2008, Issue 1, 2008., 2008
The general synthetic strategy towards water‐soluble biodegradable drug carriers and the properties that they must have are discussed. The syntheses of water‐soluble biodegradable copolymers of lysine and aspartic acid as potential drug‐delivering devices, having amine‐functionalised side chains are then described. Covalent anchoring of carboxylic acid
M. David Maree, Eberhard W. Neuse, Elizabeth Erasmus, Jannie C. Swarts, Michael J. Cook   +4 more
wiley   +1 more source

DESCRIÇÃO MATEMÁTICA DO FENÔMENO OSCILATÓRIO DURANTE A SÍNTESE ELETROQUÍMICA DOS FILMES DOS OXI-HIDROXI COMPOSTOS DE COBALTO (III) E DURANTE A SÍNTESE DOS COMPÓSITOS DELES COM OS POLÍMEROS CONDUTORES

Eclética Química, 2018
O comportamento eletroquímico do sistema da eletrotransformação potenciostática dos sais de cobalto (II) para os oxi-hidroxicompostos de cobalto (III) na presença dos íons de fluoro (que promove a dissolução do oxi-hidroxicompostos de cobalto (III ...
Volodymyr Tkach, Vasyl Vasylyovych Nechyporuk, Oksana Slipenyuk   +2 more
doaj   +1 more source

Determinação simultânea de cobalto e níquel [PDF]

Química Nova, 1998
The simultaneous determination of cobalt and nickel is a classical analytical problem. A great number of reagents associated with several techniques of analysis have been applied to achieve this determination. In this review 117 references, which appeared between 1996-1980, are described and classified according to the technique applied.
Antunes, Patrícia Alexandra, Breviglieri, Susete Trazzi, Chierice, Gilberto Orivaldo, Cavalheiro, Éder Tadeu Gomes   +3 more
openaire   +3 more sources

The origin of high-resolution IETS-STM images of organic molecules with functionalized tips [PDF]

, 2014
Recently, the family of high-resolution scanning probe imaging techniques using decorated tips has been complimented by a method based on inelastic electron tunneling spectroscopy (IETS).
Hapala, Prokop, Jelínek, Pavel, Tautz, F. Stefan, Temirov, Ruslan   +3 more
core   +2 more sources

Desempeño fisiológico de semillas de soja y fríjol tratadas con dos micronutrientes

Investigación Agraria, 2016
El Cobalto (Co) y el Molibdeno (Mo) son micronutrientes de gran importancia en la familia Fabaceae por hacer parte de la enzima nitrogenasa, sintetizada por bacterias durante el proceso biológico de fijación de nitrógeno por simbiosis.
Cristiane Deuner, Raphael Silva Dutra Pereira, Carolina Terra Borges, Mariana Peil da Rosa, César Iván Suarez Castellanos, Géri Eduardo Meneghello   +5 more
doaj   +1 more source

Thermodynamic and kinetic study of the recovery of tungsten and cobalt from tool waste

Revista Facultad de Ingeniería Universidad de Antioquia, 2018
En el presente proyecto se analiza la recuperación de wolframio y cobalto a partir de residuos de herramientas fabricadas con carburo de wolframio - cobalto (WC-Co), las cuales son muy empleadas en la industria metalmecánica.
Sebastián Sierra-Pérez, Néstor Ricardo Rojas-Reyes, José Martínez-Zambrano, Hugo Alfonso Rojas-Sarmiento   +3 more
doaj   +1 more source