División de Nanociencias y Materiales: Envíos recientes
Mostrando ítems 161-180 de 604
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Insiders and outsiders: comparing urban impressions between population groups
(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
(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
(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
(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
(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
(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
(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
(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
(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
(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
(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
(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
(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
(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
(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 ... -
Síntesis, caracterización y evaluación de desempeño de fotocatalizadores híbridos, base cerámica, para la fotodegradación de fenol.
(2020-01-29)"El fenol se encuentra en la lista de los principales contaminantes de la Organización Mundial de la Salud (OMS), el cual pertenece a los llamados compuestos recalcitrantes que son altamente persistentes en el medio ambiente, ... -
Estudio de los efectos magnetocalórico, elastocalórico y de estado vítreo de deformación en aleaciones Heusler basadas en Ni-Mn
(2020-01)"En este trabajo se realizaron estudios del efecto elastocalórico, magnetocalórico y del estado vítreo de deformación en aleaciones de base Ni-Mn. Algunas aleaciones de base Ni-Mn ferromagnéticas presentan la transformación ... -
Obtención de membranas mediante electrospinning para tratamiento de agua con alto contenido de sólidos
(2019-12-12)"Hoy en día, la creciente tasa de población en el mundo ha traído como unas de las principales consecuencias la sobreexplotación de agua para consumo humano. En México, se tienen 471.5 mil millones de metros cúbicos de ... -
Modificación y evaluación de polímeros semiconductores para su potencial uso en dispositivos fotovoltaicos
(2019-11-15)"Actualmente las celdas perovskitas de vanguardia presentan una configuración convencional tipo n-i-p que consisten en óxido de titanio (TiO2), semiconductor tipo n, cubierto por la perovskita y una capa transportadora de ... -
Construction of 3D self-supported electrodes of amorphous Ni(OH)2 with rationally nanostructued architecture for supercapacitor applications
(2019-11-11)"Amorphous Ni(OH)2 coating on nanostructured nickel scaffolds with rational archietcture have been successfully fabricated by a facile process of templated-directed electrodeppsition and surface oxidation treatment. ...