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Characterization of fine-grained material ejected by the cotopaxi volcano employing X-ray diffraction and electron diffraction scattering techniques
ArticleAbstract: After 138 years of apparent silence, the Cotopaxi volcano awoke on August 14th of 2015 with a sequenPalabras claves:Characterization of ash particles, Chemical composition of tephra, Cotopaxi Volcano, granulometry, Volcanic reactivationAutores:Andrea V. Vaca, Carlos R. Arroyo, Debut Alexis, Eduardo Aguilera, Iván Fernando Palacios-Orejuela, Luis H. Cumbal, Mario Cruz D'Howitt, Theofilos ToulkeridisFuentes:scopusAnalysis of the fracture of steel reinforcing bars under low cycle fatigue
ArticleAbstract: In this work we have analyzed the dynamic behavior of steel reinforcing bars under low cycle force-cPalabras claves:ASTM A706, Low cycle fatigue, Steel reinforcing barsAutores:Andrea V. Vaca, Carlos R. Arroyo, Debut Alexis, Lenin R. Abatta, Leonardo Goyos Pérez, Reinaldo Delgado-GarciaFuentes:scopusCost-effective fabrication of photopolymer molds with multi-level microstructures for pdms microfluidic device manufacture
ArticleAbstract: This paper describes a methodology of photopolymer mold fabrication with multi-level microstructuresPalabras claves:Autores:Andrea V. Vaca, Carlos R. Arroyo, Debut Alexis, Follo M., Gustavo Iván Rosero Yañez, Karla Vizuete, Lerner B., Luis H. Cumbal, Mertelsmann R., Olmos C.M., Penãherrera A., Perez M.S., Ruarte D.Fuentes:scopusEpoxy resin mold and PDMS microfluidic devices through photopolymer flexographic printing plate
ArticleAbstract: Photopolymer flexographic printing plate is a new photopolymeric material used for microdevices fabrPalabras claves:Epoxy resin, Microdroplets generation, microfluidics, PDMS microdevice, Photopolymer flexographicAutores:Andrea V. Vaca, Carlos R. Arroyo, de Sá Carneiro I., Debut Alexis, Gustavo Iván Rosero Yañez, Karla Sofía Vizuete Armendáriz, Karla Vizuete, Lerner B., Luis Cumbal, Professor, Luis H. Cumbal, Olmos C.M., Penãherrera A., Perez C., Perez M.S.Fuentes:googlescopusEvaluation of the initial stage of the reactivated Cotopaxi volcano - Analysis of the first ejected fine-grained material
ReviewAbstract: Fine-grained volcanic samples were collected at different locations near the Cotopaxi volcano on thePalabras claves:Autores:Andrea V. Vaca, Carlos R. Arroyo, Debut Alexis, Eduardo Aguilera, Iván Fernando Palacios-Orejuela, Luis H. Cumbal, M. Cruz D'Howitt, Theofilos ToulkeridisFuentes:scopusMortiño (Vaccinium floribundum Kunth) berry assisted green synthesis and photocatalytic performance of Silver–Graphene nanocomposite
ArticleAbstract: Mortiño (Vaccinium floribundum Kunth) is a wild shrub native to South America, whose berries are widPalabras claves:FTIR, Green Synthesis, Photocatalytic effect, Sem, Silver-Graphene nanocomposite, XRDAutores:Andrea V. Vaca, Debut Alexis, Dr Brajesh Kumar, Karla Sofía Vizuete Armendáriz, Karla Vizuete, Luis Cumbal, Professor, Luis H. CumbalFuentes:googlescopusOrigin of color variations of thin, nano-sized layers of volcanic cinder from the Sierra Negra Volcano of the Galapagos Islands
ArticleAbstract: Volcanic cinder, also known as scoria, is an extrusive igneous rock that forms when gas-rich magmasPalabras claves:Cinder, Crystallization speed, Diffraction, GALAPAGOS, Nano-sized layers, Optical interference, VolcanologyAutores:Andrea V. Vaca, Carlos R. Arroyo, Debut Alexis, Theofilos ToulkeridisFuentes:scopusInfluence of thermal treatment and aging time on the stability and swelling properties of nano/micron-sized polymeric spheres for improved oil recovery application
ArticleAbstract: Understanding the knowledge of swelling and stability properties of polymeric spheres are essentialPalabras claves:improved oil recovery, microdevice, polymeric spheres, stability, swellingAutores:Andrea V. Vaca, Debut Alexis, Gustavo Iván Rosero Yañez, Hernandez M.I., Karla Vizuete, Lasorsa C., Lerner B., Luis H. Cumbal, Masiero D., Olmos C.M., Penãherrera A., Perez M.S.Fuentes:scopusRaman spectroscopy of carbon nano-particles synthesized by laser ablation of graphite in water
ArticleAbstract: Carbon nanoparticles (CNPs) have been synthesized by laser ablation of polycrystalline graphite in wPalabras claves:atomic force microscopy, Carbon nanoparticle, High resolution electron microscopy, Laser ablation, Raman spectroscopyAutores:Andrea V. Vaca, Cesar Costa-Vera, Debut Alexis, José Luis Paz, Juan Fernando Cárdenas, Thomas Cadenbach, Zhang S.L., Zhang Z.B.Fuentes:scopusReliable tools for quantifying the morphogical properties at the nanoscale
ArticleAbstract: We have developed a fast, reliable and robust code to analyze size distributions and morphological pPalabras claves:fractal dimension, image analysis, Nanoparticles, Particle size distribution, Transmission electron microscopy, Watershed transformationAutores:Andrea V. Vaca, Carlos R. Arroyo, Debut Alexis, Dr Brajesh Kumar, Katherine Guzmán, Luis Cumbal, Professor, Luis H. Cumbal, Stael C.Fuentes:googlescopus