División de Nanociencias y Materiales: Envíos recientes

Mostrando ítems 141-160 de 588

    • Nanoestructuras de carbono dopadas con fósforo 

      Martínez Iniesta, Armando David (2020)
      "El dopaje de nanoestructuras de carbono empleando átomos tales como B, N, O, P, entre otros, ha demostrado la capacidad de modificar sus propiedades físicas químicas, tales como la dureza, conductividad eléctrica, reducción ...

    • Síntesis y caracterización de carburos de tántalo y la relación de su microestructura con la dureza 

      Vázquez Pelayo, Adriana (2020-06)
      "En el presente trabajo se sintetizó carburo de tántalo por molienda mecánica en dos tipos de molinos: planetario (muestra 1) y vibratorio (muestra 2). La síntesis se realizó a partir de una mezcla estequiométrica de polvos ...

    • UrBis: a mobile crowdsourcing platform for sustainable social and urban research in Mexico 

      Ruíz Correa, Salvador; Hernandez Huérfano, Emilio Ernesto; Álvarez Rivera, Leonardo; Islas López, Victor E.; Ramírez-Sánchez, V. A.; González Abundes, Mariana; Hernández Castañeda, Ma. de Lourdes; Carrillo Sánchez, Elizabeth; Hasimoto Beltrán, Rogelio; Plata Ortega, Ivonne (Springer, 2018)
      "Recently, the United Nations Human Settlements Program (UN-HABITAT) stated that cities in Mexico are steadily expanding, sometimes outstripping the rise in population by two-fold due to urban sprawl, and that 85% of the ...

    • Happy and agreeable?: multi-label classification of impressions in social video 

      Chávez Martínez, Gilberto; Ruíz Correa, Salvador; Gatica Pérez, Daniel (ACM, 2015)
      "The mobile and ubiquitous nature of conversational social video has placed video blogs among the most popular forms of online video. For this reason, there has been an increasing interest in conducting studies of human ...

    • The young and the city: crowdsourcing urban awareness in a developing country 

      Ruíz Correa, Salvador; Santani, Darshan; Gatica Pérez, Daniel (ICST, 2014)
      "We present a crowdsourcing study that investigates impressions of urban spaces by young inhabitants in a city in the developing world. Our goal is to obtain collective perceptions from the actual inhabitants of the city ...

    • Insiders and outsiders: comparing urban impressions between population groups 

      Santani, Darshan; Ruíz Correa, Salvador; Gatica Pérez, Daniel (ACM, 2017)
      "There is a growing interest in social and urban computing to employ crowdsourcing as means to gather impressions of urban perception for indoor and outdoor environments. Previous studies have established that reliable ...

    • Looking at cities in Mexico with crowds 

      Santani, Darshan; Ruíz Correa, Salvador; Gatica Pérez, Daniel (ACM, 2015)
      "Mobile and social technologies are providing new opportunities to document, characterize, and gather impressions of urban environments. In this paper, we present a study that examines urban perceptions of three cities in ...

    • SenseCityVity: mobile crowdsourcing, urban awareness, and collective action in Mexico 

      Ruíz Correa, Salvador; Santani, Darshan; Ramírez Salazar, Beatriz; Ruíz Correa, Itzia; Rendón Huerta, Fátima Alba; Olmos Carrillo, Carlo; Sandoval Mexicano, Carmina Brisa; Arcos García, Humberto Ángel; Hasimoto Beltrán, Rogelio; Gatica Pérez, Daniel (IEEE, 2017)
      "The SenseCityVity project aims to engage youth in Guanajuato, Mexico, helping them investigate, document, and reflect on urban problems though mobile crowdsourcing. An Urban Data Challenge encourages them to collect ...

    • What TripAdvisor Can´t Tell: Crowdsourcing Urban Impressions for Whole Cities 

      Gatica Pérez, Daniel; Ruíz Correa, Salvador; Santani, Darshan (L'Oeil d'Or, 2016)
      "In the context of a number of emerging opportunities for citizen participation in Latin America, we present an overview of the SenseCityVity project developed in Mexico. The project goals are the design, implementation, ...

    • Síntesis y caracterización de materiales de bismuto y su aplicación en la remediación de agua contaminada 

      Orta Flores, Ingmar (2020)
      "Hoy en día, actividades a nivel industrial como la minería, obtención y quema de combustibles fósiles, la producción de fertilizantes u aditivos en la industria agrícola, entre otros, lleva a que la concentración de ...

    • Superlinear photoluminescence by ultrafast laser pulses in dielectric matrices with metal nanoclusters 

      Bornacelli, J.; Torres Torres, Carlos; Silva Pereyra, Héctor Gabriel; Labrada Delgado, Gladis Judith; Crespo Sosa, Alejandro; Cheang Wong, Juan Carlos; Oliver y Gutiérrez, Alicia María (Nature Publishing Group, 2019)
      "An intense photoluminescence emission was observed from noble metal nanoclusters (Pt, Ag or Au) embedded in sapphire plates, nucleated by MeV ion-implantation and assisted by an annealing process. In particular, the ...

    • First-principles study of Ni adatom migration on graphene with vacancies 

      Hernández Vázquez, Esther Elena; Muñoz, Francisco J.; López Moreno, Sinhué; Morán López, José Luis (Royal Society of Chemistry, 2019)
      "A theoretical study based on first-principles calculations about the interaction and diffusion of Ni atoms on pristine graphene and graphene with a single vacancy is presented. In the first case, we explored the structural ...

    • Laboratorio de nuevos materiales nanoestructurados y catálisis heterogénea 

      Rodríguez González, Vicente (Universidad Nacional Autónoma de México, 2017)
      "El Laboratorio de Nuevos Materiales Nanoestructurados y Catálisis Heterogénea (la-nocat) fue creado el año 2010 dentro de la División de Materiales Avanzados (dmav) del Instituto Potosino de Investigación Científica ...

    • Plasmonic sensing of aqueous-divalent metal ions by biogenic gold nanoparticles 

      Silva De Hoyos, Luisa Elena; Sanchez Mendieta, Víctor; Vilchis Nestor, Alfredo Rafael; Camacho López, Miguel Angel; Trujillo Reyes, Jésica; Ávalos Borja, Miguel (Hindawi Publishing Corporation, 2019)
      "The chemical interaction between biogenic gold nanoparticles (AuNPs) and several metal (II) ions can be regarded as a practical, twofold, colorimetric, and plasmon resonance sensing method for the recognition of some ...

    • Magnetocaloric effect in ErNi2 melt-spun ribbons 

      Sánchez Llamazares, José Luis; Ibarra Gaytán, Pablo Jesús; Sánchez Valdés, Cesar Fidel; Ríos Jara, David; Álvarez Alonso, Pablo (Elsevier, 2019)
      "ErNi2 ribbons were produced by rapid solidification using the melt spinning technique. Their structural, magnetic and magnetocaloric properties in the as-solidified state were studied by X-ray diffraction, scanning electron ...

    • Tailoring thermomechanical treatment of Ni-Fe-Ga melt-spun ribbons for elastocaloric applications 

      Villa, Elena; Aguilar Ortiz, Christian Omar; Nespoli, Adelaide; Álvarez Alonso, Pablo; Camarillo García, Juan Pablo Ramón; Salazar Jaramillo, Daniel; Passaretti, Francesca; Flores Zúñiga, Horacio; Hosoda, Hideki; Chernenko, Volodymyr (Elsevier, 2019)
      "In the present work, the structural, mechanical and shape memory properties of Ni55Fe16Ga29 (at.%) melt-spun ribbons have been studied with a prospective of application in the elastocaloric devises. Particularly, a special ...

    • Modified metallic oxides for efficient photocatalysis 

      Escobar Barrios, Vladimir Alonso; Sánchez Rodríguez, Dalia Verónica; Cervantes Rincón, Nancy Ayerim; Jasso Salcedo, Alma Berenice (IntechOpen, 2018)
      "The aim of the chapter is to present modified materials like alternatives for conventional photocatalyst such as titanium dioxide. Discussion about silver/graphene nanoparticles-modified zinc oxide for the degradation of ...

    • Oxygenated surface of carbon nanotube sponges: electroactivity and magnetic studies 

      Cortés López, Alejandro Javier; Muñoz Sandoval, Emilio; López Urías, Florentino (American Chemical Society, 2019)
      "We report the synthesis of nitrogen-doped carbon nanotube sponges (N-CNSs) by pyrolysis of solutions of benzylamine, ferrocene, thiophene, and isopropanol-based mixture at 1020 degrees C for 4 h using an aerosol-assisted ...

    • Recuperación mejorada de petróleo con D-Limoneno diluido en salmuera 

      Gaitan-Espinosa, Mauricio (05/02/2020)
      D-Limonene, a compound consisting of terpenes in its dextrogyrous form, is used as a degreaser, hydrocarbon waste cleaner and as a sand oil separator. In this thesis, the use of this solvent is proposed as a chemical ...

    • Diseño, síntesis y evaluación de catalizadores CeO2/grafeno modificados con ZrO2 y/o NiO para la reacción de Water Gas Shift 

      Ávalos Ballester, Victoria (2020-02-05)
      "Las investigaciones en el área de catálisis han tomado mucho auge en la actividad industrial, y especialmente en la industria del petróleo e hidrocarburos, por tal motivo se llevó a cabo la síntesis de catalizadores con ...