Mostrando 10 resultados de: 11
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Journal of Volcanology and Geothermal Research(4)
Bulletin of Volcanology(2)
26th International Mineral Processing Congress, IMPC 2012: Innovative Processing for Sustainable Growth - Conference Proceedings(1)
Frontiers in Earth Science(1)
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Hydrovolcanic ash emission between August 14 and 24, 2015 at Cotopaxi volcano (Ecuador): Characterization and eruption mechanisms
ArticleAbstract: Cotopaxi is an active, hazardous and ice-covered stratovolcano 60 km southeast of Quito, (Ecuador) wPalabras claves:Ash fall deposit, Cotopaxi Volcano, Eruption mechanism, Juvenile contentAutores:Alicia Guevara, Estefano Montalvo, Izquierdo T., Janina Carrillo, Jorge Eduardo Bustillos, Liliana Troncoso, Romero J.E.Fuentes:googlescopusCentennial-scale eruptive diversity at Volcán Calbuco (41.3°S; Northwest Patagonia) deduced from historic tephra cover-bed and dendrochronologic archives
ArticleAbstract: Since the late-18th Century, eye-witness accounts have documented a wide-spectrum of eruptive activiPalabras claves:Andesite, Eruptive history, Northwest Patagonia, Physical volcanology, Southern Andes, Tephra deposits, Volcán CalbucoAutores:Alicia Guevara, Alloway B.V., Bertín D., Castruccio A., Daga R., Gleeman E., González M., Gutiérrez R., Jorge Eduardo Bustillos, Mella M., Montiel M., Morgavi D., Pisello A., Ribeiro Guevara S., Romero J.E., Schipper C.I., Villarosa G.Fuentes:scopusContrasting origin of two clay-rich debris flows at Cayambe Volcanic Complex, Ecuador
ArticleAbstract: We investigate the sedimentological and mineralogical properties of a debris flow deposit west of CaPalabras claves:Cayambe Volcanic Complex, Clay minerals, Debris flow deposit, Hydrothermal alteration, Volcanic debris avalancheAutores:Alicia Guevara, Delmelle P., Detienne M., Opfergelt S., Pablo Samaniego Ponce, Patricia A. MothesFuentes:scopusA green and easy way for carbon microspheres synthesis impregnated with palladium for hexavalent chromium reduction
ArticleAbstract: Hexavalent chromium is a toxic heavy metal widely spread due to industrial activities around the worPalabras claves:carbon, Chromium, Microspheres, Palladium, ReductionAutores:Alicia Guevara, Ana Belén Lozada, Ernesto De La Torre, Sebastián GámezFuentes:scopusCombining ash analyses with remote sensing to identify juvenile magma involvement and fragmentation mechanisms during the 2018/19 small eruption of Peteroa volcano (Southern Andes)
ArticleAbstract: The Planchón Peteroa Volcanic Complex (PPVC) is located on the border of Chile and Argentina, and isPalabras claves:Crater Lake, Phreatomagmatic, Precursory activity, remote sensing, Volcanic ashAutores:Aguilera F., Alicia Guevara, Caro J., Delgado F., Guzmán D., Holbik S., Jorge Eduardo Bustillos, Luengo N., Romero J.E., Tormey D., Van Eaton A., Zegarra I.Fuentes:scopusImprovement and simulation of a gold recovery plant by gravity concentration, flotation and leaching
Conference ObjectAbstract: The following study shows the improvement and simulation of a gold recovery plant of 24 t/day of capPalabras claves:Autores:Alicia Guevara, Ernesto De La Torre, Karla VelínFuentes:scopusPrecious metals recovery from waste printed circuit boards using thiosulfate leaching and ion exchange resin
ArticleAbstract: Precious metals recovery from secondary sources is a novel alternative since they hold higher contenPalabras claves:Electrodeposition, Elution, Ion exchange resin, ThiosulfateAutores:Alicia Guevara, Ernesto De La Torre, Karla Garcés, Sebastián GámezFuentes:googlescopusTephra From the 3 March 2015 Sustained Column Related to Explosive Lava Fountain Activity at Volcán Villarrica (Chile)
ArticleAbstract: Exceptionally intense lava fountains at open conduit volcanoes are infrequent, hazardous and little-Palabras claves:Eruption parameters, Lava fountain, Southern Andes, tephra fall, Villarrica VolcanoAutores:Alam M.A., Alicia Guevara, Arzilli F., Burton M., Evelyn Cuenca, Johnson J.B., Jorge Eduardo Bustillos, Keller W., Morgavi D., Palma J.L., Polacci M., Romero J.E., Vera F.Fuentes:scopusSurface crusting of volcanic ash deposits under simulated rainfall
ArticleAbstract: Explosive volcanic eruptions can have severe impacts on watershed hydrology. Among them, surface cruPalabras claves:Ash deposit, Lahar initiation, Rainfall simulation, Structural crust, Volcanic ashAutores:Alicia Guevara, Bielders C., Delmelle P., Tarasenko I.Fuentes:googlescopusRecovery of gold, silver, copper and niobium from printed circuit boards using leaching column technique
Conference ObjectAbstract: At this time, over 300 tons of Au are used in electronic equipment each year with other precious andPalabras claves:Leaching column, niobium, Precious metals, Printed circuit boards, recoveryAutores:Alicia Guevara, Ernesto De La Torre, Ricardo MonteroFuentes:scopus