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Browsing per Sponsorship "Departamento Administrativo de Ciencia, Tecnología e Innovación, Colombia"

Now showing items 1-20 of 61

A study of some fundamental physicochemical variables on the morphology of mesoporous silica nanoparticles MCM-41 type

Beltrán-Osuna, A.A.; Gómez Ribelles, José Luís; Perilla-Perilla, Jairo Ernesto (Springer-Verlag, 2017)

[EN] All variables affecting the morphology of mesoporous silica nanoparticles (MSN) should be carefully analyzed in order to truly tailored design their mesoporous structure according to their final use. Although complete ...
A system to monitor and model the thermal isolation of coating compounds applied to closed spaces

Florez Montes, Frank; Fernández de Córdoba, Pedro; Higón Calvet, José Luís; Conejero, J. Alberto; Poza-Lujan, Jose-Luis (National Library of Serbia, 2020)

[EN] Smart control systems and new technologies are necessary to reduce the energy consumption in buildings while achieving thermal comfort. In this work, we monitor the thermal evolution inside a scale reduced closed space ...
A theoretical study on NHC-catalysed enantioselective cycloaddition of ketenes and 3-aroylcoumarins: mechanism and enantioselectivity

Zaragoza, Ramón J.; Aurell, Maria J.; González-Cardenete, Miguel A (The Royal Society of Chemistry, 2018)

[EN] The NHC-catalysed enantioselective cycloaddition of ketenes to 3-aroylcoumarins to yield dihydrocoumarin-fused dihydropyranones has been investigated using DFT methods at the B3LYP/6-31G* and MPWB1K/6-311G** computational ...
Análisis de sentimientos a nivel de aspecto usando ontologías y aprendizaje automático

Carlos Henríquez; Pla Santamaría, Ferran; Hurtado Oliver, Lluis Felip; Jaime Guzmán (Sociedad Española para el Procesamiento del Lenguaje Natural, 2017)

[EN] In this paper, we present an aspect-based sentiment analysis system that allows to automatically extract the characteristics of an opinion and to determine their associated polarity. The proposed system is based on a ...
Análisis dinámico del confort en edificios con estrategias de control adaptativo en modos deslizantes

Florez Montes, Frank (Universitat Politècnica de València, 2020-11-02)

[ES] En esta tesis de doctorado se utiliza el modelado matemático de zonas térmicas para evaluar la capacidad del control en modos deslizantes, para regular la temperatura interna de un caso de estudio. Se utiliza la técnica ...
Antifouling zwitterionic pSBMA-MSN particles for biomedical applications

Beltrán-Osuna, A.A.; Ródenas Rochina, Joaquín; Gómez Ribelles, José Luís; Perilla-Perilla, Jairo Ernesto (John Wiley & Sons, 2019-03)

[EN] Mesoporous silica nanoparticles (MSNs) are one of the most promising nanocarriers in biomedicine. Nonetheless, surface modification has been pointed out as a condition necessary for drug delivery applications, where ...
Aplicación de la teoría de robots manipuladores a la biomecánica del brazo humano

Rodríguez, Carlos F.; Botero, Juan C.; Quintero, Hugo (Universitat Politècnica de València, 2007-11-07)

[ES] Este artículo presenta la aplicación de un conjunto de técnicas propias de la teoría de los robots manipuladores al estudio del movimiento del brazo humano. Para ello el brazo humano se modela como un robot manipulador ...
Argumentation-based hybrid recommender system for recommending learning objects

Rodríguez, Paula; Heras Barberá, Stella María; Palanca Cámara, Javier; Duque, Néstor; Julian Inglada, Vicente Javier (Springer, 2016-04-17)

Recommender Systems aim to provide users with search results close to their needs, making predictions of their preferences. In virtual learning environments, Educational Recommender Systems deliver learning objects ...
Arquitectura Basada en Roles Aplicada en Equipos de Fútbol de Robots con Control Centralizado

Guarnizo Marín, José Guillermo; Mellado Arteche, Martín (Elsevier España, 2016)

[EN] Borrar Robot soccer offers an adequate domain in order to design and validate architectures for robot-coordination. One classification refers to centralized architectures, which correspond to robot soccer environments ...
Aspectos sobre la Variabilidad Temporal y Dispersión en Frecuencia del Canal Radio para Comunicaciones Vehiculares

Fernández González, Herman Antonio; Balaguer Andrés, David; Part-Escriva, MC; Reig, Juan; Rubio Arjona, Lorenzo (Universidad Carlos III de Madrid, 2011-09-06)

[EN] Channel variations over time and the multipath propagation cause that the received signal suffers both time and frequency-selectivity. In vehicular communications, the movement of both the transmitter and receiver ...
Atributos Relevantes para el Diagnóstico Automático de Eventos de Tensión en Redes de Distribución de Energía Eléctrica

Barrera Núñez, Víctor; Velandia, Ronald; Hernández, Fredy; Meléndez, Joaquim; Vargas, Hermann (Universitat Politècnica de València, 2013-01-13)

[ES] En este trabajo se aborda el diagnóstico de eventos o perturbaciones de tensión registradas en subestaciones de distribución. La aparición de dichos eventos se debe a causas diversas que van desde faltas en la red, ...
BITOUR: A Business Intelligence Platform for Tourism Analysis

Bustamante, Alexander; Sebastiá Tarín, Laura; Onaindia De La Rivaherrera, Eva (MDPI AG, 2020-11-12)

[EN] Integrating collaborative data in data-driven Business Intelligence (BI) system brings an opportunity to foster the decision-making process towards improving tourism competitiveness. This article presents BITOUR, a ...
Candidate Polyurethanes Based on Castor Oil (Ricinus communis), with Polycaprolactone Diol and Chitosan Additions, for Use in Biomedical Application

Uscategui, Yomaira L.; Diaz, Luis E.; Gómez-Tejedor, José-Antonio; Vallés Lluch, Ana; Vilariño, Guillermo; Serrano, María-Antonia; Valero, Manuel F. (MDPI AG, 2019-01-10)

[EN] Polyurethanes are widely used in the development of medical devices due to their biocompatibility, degradability, non-toxicity and chemical versatility. Polyurethanes were obtained from polyols derived from castor ...
Capacitively Coupled Electrical Stimulation of Rat Chondroepiphysis Explants: A Histomorphometric Analysis

Vaca-González, J. J.; Escobar, J.F.; Guevara, J.M.; Hata, Y. A.; Gallego Ferrer, Gloria; Garzón-Alvarado, D. A. (Elsevier, 2019-04)

[EN] The growth plate is a cartilaginous layer present from the gestation period until the end of puberty where it ossifies joining diaphysis and epiphysis. During this period several endocrine, autocrine, and paracrine ...
Caracterizacion experimental en banda estrecha del canal radio Vehicular-to-Vehicular (V2V) a 5.9 GHz

Campuzano Candel, Andrés José; Fernandez, Hernán; Balaguer Andrés, David; Rodrigo-Peñarrocha, Vicent Miquel; Reig, Juan; Rubio Arjona, Lorenzo (Universidad Miguel Hernández de Elche, 2012-09-12)

[EN] Vehicular-to-vehicular (V2V) communications are receiving considerable attention due to the introduction of the intelligent transportation system (ITS) concept. To design, evaluate and optimize ITS applications ...
Caracterización de las pérdidas de propagación en escenarios vehiculares bajo condiciones LOS y NLOS a 700 MHz y 5.9 GHz

Fernández González, Herman Antonio; Rodrigo Peñarrocha, Vicent Miquel; Reig, Juan; Rubio Arjona, Lorenzo (2013-09-11)

Vehicular-to-vehicular (V2V) communications are receiving considerable attention due to the introduction of the intelligent transportation system (ITS) concept, enabling smart and intelligent driving technologies and ...
Cenizas del tamo de arroz como substituto del feldespato en la fabricación de cerámica blanca

Guzmán, Álvaro; Delvasto, Silvio; Sánchez, Enrique; Amigó Borrás, Vicente (CSIC, 2013)

[EN] The substitution of raw materials for processing high energy consumption materials by agricultural and agro-industrial wastes causes a positive impacts on the environment preservation. One of these residues is rice ...
Cerium oxide as catalyst for the ketonization of aldehydes: Mechanistic insights and a convenient way to alkanes without consumption of external hydrogen

Orozco-Arboleda, Lina Marcela; Renz, Michael; Corma Canós, Avelino (The Royal Society of Chemistry, 2017)

[EN] The ketonization of aldehydes joins two molecules, with n carbon atoms each, to a ketone with 2n 1 carbon atoms. When employing cerium oxide as catalyst with nano-sized crystals (<15 nm) the ketone can be obtained ...
Comparison between the finite differences, finite volume and finite element methods for the modelling of convective drying of fruit slices

Castro, Adriana; Mayorga, Edgar; Moreno, Fabian (Editorial Universitat Politècnica de València, 2018-09-07)

[EN] Three numerical methods, finite differences, finite volume and finite element, were compared to know their convenience in the simulation of convective drying of fruit slices. The mathematical treatment, the stability, ...
Concreto autocompactante con materiales cementicios suplementarios de Colombia

Silva Urrego, Yimmy; Delvasto Arjona, Silvio (Editorial Universitat Politècnica de València, 2018-03-06)

[ES] El concreto autocompactante (CAC) es un tipo de hormigón o concreto especial, que por sus características reológicas es considerado uno de los grandes desarrollos tecnológicos en la industria del concreto, con un ...