Výsledky vyhledávání - "Williams Meléndez"

Akademický článek

Oxidación del grafito natural en el laboratorio y comparación con el óxido de grafito sintético, por medio de técnicas térmicas y espectroscópicas Oxidation of natural graphite in the laboratory and comparison with the synthetic graphite oxide, by means of thermal and spectroscopic techniques

Autor: Daniel Pisapia, Carlos Barrios, Manuel Martínez, Katya Reategui, Williams Meléndez, Santiago Marrero, Marcos Escobar

Publikováno v: Revista Técnica de la Facultad de Ingeniería, Vol 32, Iss 3, Pp 249-255 (2009)

Con la finalidad de determinar la posible formación natural del óxido de grafito durante la meteorización y transporte de este mineral, una muestra de grafito altamente cristalizado, aislado de un esquisto grafitoso de la Formación Sierra Nevada

Externí odkaz: https://doaj.org/article/915fd57ddbe144aabbfcdad8ef5a8ef5

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Akademický článek

Oxidation of natural graphite in the laboratory and comparison with the synthetic graphite oxide, by means of thermal and spectroscopic techniques.

Autor: Daniel Pisapia, Carlos Barrios, Manuel Martínez, Katya Reategui, Williams Meléndez, Santiago Marrero, Marcos Escobar

Publikováno v: Revista Técnica de la Facultad de Ingeniería, Vol 32, Iss 3 (2010)

With the aim of establishing the probable natural formation of graphite oxide (GO) during the weathering and transport of this mineral, a highly crystalline graphite sample isolated from a Sierra Nevada Formation graphitic schist (Precambrian Age) co

Externí odkaz: https://doaj.org/article/3a1afa558f2b4f2cba0d43eeceea30bd

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Akademický článek

Oxidación del grafito natural en el laboratorio y comparación con el óxido de grafito sintético, por medio de técnicas térmicas y espectroscópicas

Autor: Daniel Pisapia, Carlos Barrios, Manuel Martínez, Katya Reategui, Williams Meléndez, Santiago Marrero, Marcos Escobar

Publikováno v: Revista Técnica de la Facultad de Ingeniería, Vol 32, Iss 3, Pp 249-255

Externí odkaz: https://doaj.org/article/01f36e991df74f9c9b4f316fa65d8a86

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The Loma de Hierro Ni-laterite deposit (Venezuela): Mineralogical and chemical composition

Autor: Joaquín A. Proenza, Josep M. Soler, Cristina Domènech, José Rondón, Williams Meléndez, Marite P. Ancco Ancco, Salvador Galí, Cristina Villanova-de-Benavent

Publikováno v: Dipòsit Digital de la UB
Universidad de Barcelona

Nickel laterite deposits developed on ultramafic rocks have traditionally been a significant source of Ni and Co and recently of Sc. Although the Loma de Hierro deposit (Venezuela) has been in operation for more than 50 years, it lacks detailed studi

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::67e710269512583771723f20f977f6b4
http://hdl.handle.net/2445/171168

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Colloidal and thermal behaviors of some venezuelan kaolin pastes for therapeutic applications

Autor: Gema González, Williams Meléndez, Mahmoud E. Awad, Ana C. Hernández, Rita Sánchez-Espejo, César Viseras, Alberto López-Galindo, Fátima García-Villén

Publikováno v: RUC. Repositorio da Universidade da Coruña
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Minerals
Volume 9
Issue 12
Digital.CSIC. Repositorio Institucional del CSIC
Digibug. Repositorio Institucional de la Universidad de Granada

This work contributes to the knowledge of colloidal and thermal properties of some important primary-originated kaolin deposits from Bolivar State, Venezuela, and their possible use as semisolid formulations in medicinal muds for topical applications

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d3437881416c00f7277b65cc5f057fe2
http://hdl.handle.net/2183/24781

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Characterization of Venezuelan kaolins as health care ingredients

Autor: Gema González, Williams Meléndez, César Viseras, Ana C. Hernández, Alberto López-Galindo, Rita Sánchez-Espejo

Publikováno v: Digital.CSIC. Repositorio Institucional del CSIC
instname

Characterization directed to evaluate health care usefulness of kaolinitic samples from various deposits from the south of Venezuela exploited used as raw materials in ceramics have been done Identity, purity and richness in mineral phases and presen

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::69af8910e01f4f3cc0a348c18348921c
http://hdl.handle.net/10261/204742

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Composition and dissolution kinetics of garnierite from the Loma de Hierro Ni-laterite deposit, Venezuela

Autor: Jordi Cama, Williams Meléndez, José Estanga, Josep M. Soler, Salvador Galí, Armando Ramírez

Publikováno v: Chemical Geology. 249:191-202

The composition of a garnierite sample (Mg–Ni silicate) from the Loma de Hierro Ni-laterite deposit (Venezuela) has been determined by means of X-ray diffractometry (XRD), high-resolution transmission electron microscopy (HR-TEM) and electron micro

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::c7e3fba513f4978d987d0a76bd6495a2
https://doi.org/10.1016/j.chemgeo.2007.12.012

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Geochemistry of the Mirador Formation (Late Eocene-Early Oligocene), southwestern Venezuela: Chemostratigraphic constraints on provenance and the influence of the sea level

Autor: Alejandro Martínez, Franco Urbani, José Gutiérrez, Williams Meléndez, Manuel Martínez, Katya Reategui, Iván Esteves

Publikováno v: GEOCHEMICAL JOURNAL. 39:213-226

A geochemical study was carried out on Eocene-Lower Oligocene sedimentary rocks (the Mirador Formation) from the southern Lake Maracaibo Basin, western Venezuela. The goal of this work was the identification of source rock composition and tectonic se

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::4aff831089dbed22391fb4094ef0ad87
https://doi.org/10.2343/geochemj.39.213

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Composition and dissolution kinetics of garnierite from Loma de Hierro (Venezuela)

Autor: Armando Ramírez, Josep M. Soler, Williams Meléndez, Jordi Cama

Publikováno v: Geochimica et Cosmochimica Acta. 70:A80

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::4eefd3104da37181e0d914b60521b156
https://doi.org/10.1016/j.gca.2006.06.072

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