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Silver colloidal nanoparticles by electrochemistry: temporal evaluation and surface plasmon resonance
(2021-06-04)
The electrochemical technique for obtaining silver nanoparticles has advantages over
other methods. For the synthesis, a colloidal silver generator (Colloidal Silver Generator® model
1001) was used, where two electrodes ...
Educación virtual en tiempos de COVID-19: percepciones de estudiantes universitariosVirtual education in times of COVID-19: perceptions of university students
(2021-10)
El objetivo de esta investigación es describir las percepciones de un grupo de estudiantes universitarios de
nivel de pregrado en torno a la educación virtual en tiempos de COVID-19. El enfoque es cuantitativo,
cuenta ...
Percepciones y habilidades financieras en estudiantes universitarios
(Formacion Universitaria, 2021-06)
En el presente estudio se analizan las percepciones y habilidades financieras en un grupo de 307 estudiantes de pregrado de una institución educativa superior pública de la ciudad de Ocaña (Colombia). La investigación tiene ...
Determination of the expansion capacity by calcination of the clays from San José de Cúcuta, Colombia
(2021-06-04)
Viscoplasticity and pyroplasticity of clays are important characteristics to control in
production processes of lightweight concrete aggregates. When clay is calcined under
temperatures above 1,000 ℃, its volume increases. ...
Simulation study of phase change materials operating in thermoelectric devices
(2021-06-04)
In this paper, a computerized analysis is performed to evaluate the effect of phase
change materials on the performance of thermoelectric generators. This study was conducted
using commercial OpenFOAM software. Analyze ...
Development of a numerical methodology for evaluating physical properties and technical specifications in thermoelectric devices
(2021-06-04)
Typically, the performance evaluation of thermoelectric devices is done using
experimental methods and analytical models, which require detailed information on the
thermoelectric properties of the materials that make up ...
Use of strontium aluminate powders in the photocatalytic removal of dyes present in water
(2021-06-04)
The removal of Iris No. 17 fabric dye in water using strontium aluminate powders
doped with europium and dysprosium, and the radiation from an ultraviolet C lamp during
photocatalysis, is reported. The degradation of the ...
Percepciones, conocimientos y habilidades financieras en estudiantes de educación media
(Revista Venezolana de Gerencia, 2021-01-28)
La educación financiera o formación financiera, resulta un tema especial para las escuelas, los gobiernos, los mercados, los organismos internacionales, entre otros. El objetivo de esta investigación es analizar las ...
Analysis of variables related to the mass flow of gaseous emissions in beehive ovens
(2021-05-22)
In the combustion processes of the ceramic industry, large amounts of pollutant gas concentration are generated, so it is necessary to measure the system and the physical phenomenon, as well as the variables inherent to ...
Qos-based pattern recognition approach for web service discovery: Ar_wsds(Article)
(2021-08-31)
Web service composition requires high levels of integration and reliability of the services
involved in its operation, which must meet specific quality criteria to ensure their proper execution
and deployment. The discovery ...