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Now showing items 11-20 of 22
Dielectric properties of poly(vinyl alcohol) hydrogels prepared by freezing/thawing technique
(2013-11-06)
Por medio de espectroscopia dieléctrica (DRS) y calorimetría diferencial de barrido (DSC) se investigaron las propiedades dieléctricas de los hidrogeles de alcohol polivinílico –PVA– entrecruzados por ciclos repetidos de ...
Diseño y construcción de un prototipo de interfaz cerebro-computador para facilitar la comunicación de personas con discapacidad motora
(2013-11-27)
A brain-computer interface (BCI) is a communication system that translates a brain signal (e.g. sensorimotor rhythms, evoked potentials) into a control signal and, therefore, constitutes an innovative communication alternative ...
Ingeniería de tejido óseo: consideraciones básicas
(2014-05-07)
Usually bone tissue loss caused by trauma, osteonecrosis, and tumors has been treated using autograft,
allograft, xenograft, and implantation of substitute materials. Each of these treatments has significant limitations,
like ...
Hacia la construcción de un modelo de simulación de la transmisión del dengue en Colombia
(2014-05-07)
Dengue fever has been considered a public health problem worldwide. In several Colombian regions,
where environmental conditions seem to be favorable enough for disease transmission, incidence has been
showing important ...
Determinación de precursores de dioxinas y furanos de los gases procedentes de un incinerador en un reactor fotocatalítico
(2014-05-07)
A chromatografic method for the determination of dioxins and furans from one of their precursors is
shown from standards of measurements and from real samples of gases taken from an incineration plant in
Itagüí, Colombia. ...
Interface layer to improve polystyrene attachment on a quartz crystal resonator
(2014-05-07)
Technologies for thin film deposition have been used to improve the functionalization of quartz crystal resonators
(QCR); such technologies, for example, are spin coating and Langmuir-Blodgett (LB) film preparation. These ...
Síntesis y caracterización de hidrogeles de alcohol polivinílico por la técnica de congelamiento/descongelamiento para aplicaciones médicas
(2013-11-26)
Using different cycles of freeze-thawing, semicrystalline polyvinyl alcohol hydrogels were synthesized in concentrations of 7.5 % and 12 %. The kinetic and grade of swelling, states of water and the tensile strength were ...
Producción de biomasa y exopolisacáridos de grifola frondosa bajo cultivo sumergido utilizando fuentes de carbono no convencionales
(2014-05-08)
Grifola frondosa is a Basidiomycete fungus edible and medicinal, it produces polysaccharides such a
glucans (β-1,6 and β-1,3) with anti-tumor and inmuno-stimulating activity. For this work, the aim was evaluate
the ...
CNN-Promoter, new consensus promoter prediction program based on neural networks
(2013-11-19)
En este artículo se presenta un programa nuevo para la predicción de promotores llamado CNN-Promoter, que toma como entrada secuencias de ADN y las clasifica como promotor o no promotor. Se han desarrollado diversos métodos ...
Cultivo de tejido cartilaginoso articular: acercamiento conceptual
(2014-05-08)
The currently available methods for tissue repair have not been able to restore completely functional cartilage tissue. For this reason, tissue engineering has developed strategies for fabricating cartilage substitutes in ...
