Listar Artículos de investigación por fecha de publicación
Mostrando ítems 61-80 de 248
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Digital gap of the colombian tourism sector
(BarranquillaSede Norte, 2020-04-13)The purpose of this research is to know the current situation of digitization that exists in the Colombian tourism sector. For this, the data of the Annual Survey of Service-2018 were used, to which the multivariate analysis ...
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Assessment of Chitosan-Rue (Ruta graveolens L.) Essential Oil-Based Coatings on Refrigerated Cape Gooseberry (Physalis peruviana L.) Quality
(BarranquillaIngeniería MecánicaSede Norte, 2020-04-13)Cape gooseberry (Physalis peruviana L.) is one of the main exotic fruits in demand throughout the world market. However, this fruit has problems with physical and microbial decay causing losses up to thirty percent during ...
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In vitro anti-leishmanial effect of metallic meso-substituted porphyrin derivatives against Leishmania braziliensis and Leishmania panamensis promastigotes properties
(BarranquillaSede Norte, 2020-04-19)In this study, a family of porphyrins based on 5,10,15,20-Tetrakis(4-ethylphenyl)porphyrin (1, Ph) and six metallo-derivatives (Zn2+(2, Ph-Zn), Sn4+(3, Ph-Sn), Mn2+ (4, Ph-Mn), Ni2+ (5, Ph-Ni), Al3+ (6, Ph-Al), and V3+ ...
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Air Conditioning Research Evolution from 2008 to 2019: A Scientometric Analysis
(BarranquillaIngeniería MecánicaSede Norte, 2020-04-28)Air conditioning is an essential topic in heat transfer phenomena because it is widely applied in homes and industries. It has an incredible amount of applications ranging from health care to food shelf life. With the ...
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Comparative Performance of a Hybrid Renewable Energy Generation System with Dynamic Load Demand
(BarranquillaSede Norte, 2020-04-29)This article presents the modeling and simulation of a hybrid generation system, which uses solar energy generation, wind energy, and the regulation of a proton exchange membrane (PEM) cell to raise the demanded load, ...
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Thermodynamic, Exergy and Environmental Impact Assessment of S-CO2 Brayton Cycle Coupled with ORC as Bottoming Cycle
(BarranquillaIngeniería MecánicaSede Norte, 2020-05-04)In this article, a thermodynamic, exergy, and environmental impact assessment was carried out on a Brayton S-CO2 cycle coupled with an organic Rankine cycle (ORC) as a bottoming cycle to evaluate performance parameters ...
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Article Comparative Study of ZnO Thin Films Doped with Transition Metals (Cu and Co) for Methylene Blue Photodegradation under Visible Irradiation
(BarranquillaSede Norte, 2020-05-11)We synthesized and characterized both Co-doped ZnO (ZnO:Co) and Cu-doped ZnO (ZnO:Cu) thin films. The catalysts’ synthesis was carried out by the sol–gel method while the doctor blade technique was used for thin film ...
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Article Synthesis of Chitosan Beads Incorporating Graphene Oxide/Titanium Dioxide Nanoparticles for In Vivo Studies
(BarranquillaQuímicaSede Norte, 2020-05-14)Sca old development for cell regeneration has increased in recent years due to the high demand for more e cient and biocompatible materials. Nanomaterials have become a critical alternative for mechanical, thermal, and ...
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Emerging contaminants as global environmental hazards. A bibliometric analysis
(BarranquillaSede Norte, 2020-05-18)This paper presents a bibliometric analysis of peer-reviewed scientific literature on emerging contaminants published from 2000 through 2019. A total of 4968 documents (among research articles and review papers) collected ...
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Synthesis and Evaluation of the Fungal Activity of New Pyrazole-Carboxamides against Colletotrichum gloeosporioides
(BarranquillaQuímicaSede Norte, 2020-05-19)The pyrazole core has been recognized by their biological properties and included in the synthesis of modern agrochemicals. Part of these studies consists of making structural modifications to pesticides for commercial ...
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Responsabilidad Social: eje transversal en la formación gerencial de universidades venezolanas
(BarranquillaSede Norte, 2020-05-25)El objetivo de la investigación es analizar la responsabilidad social como eje transversal en la formación gerencial de universidades venezolanas. La investigación fue descriptiva, de diseño transversal, apoyada en la ...
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Statistical Wind Energy Analysis and Wind Persistence Assessment for Cordoba And Sucre Departments' Weather Stations in The Caribbean Region of Colombia
(BarranquillaSede Norte, 2020-06-01)A statistical analysis is carried out on the behavior of wind speed at meteorological stations located in the Caribbean Region of Colombia, in order to establish and identify the potential available in wind energy to be ...
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A comparative energy and exergy optimization of a supercritical-CO2 Brayton cycle and Organic Rankine Cycle combined system using swarm intelligence algorithms
(BarranquillaIngeniería MecánicaSede Norte, 2020-06-01)This article presents a multivariable optimization of the energy and exergetic performance of a power generation system, which is integrated by a supercritical Brayton Cycle using carbon dioxide, and a Simple Organic ...
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Monitoreo y control del rendimiento de las dimensiones de calidad de un centro de atención del servicio en una institución de educación superior
(BarranquillaIngeniería IndustrialSede Norte, 2020-06-01)En esta investigación se diseñó un método de control para el rendimiento de las dimensiones de calidad de un centro de atención del servicio en una institución de educación superior. Se apoyó en los planteamientos teóricos ...
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Analysis of Energy Consumption in Colombia Using the Holt Method
(BarranquillaSede Norte, 2020-06-08)Energy production is constantly facing major challenges today, because despite initiatives to promote the insertion of renewable energy, electricity consumption has shown considerable growth in recent years. In order to ...
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Wind Speed Prediction Based on Univariate ARIMA and OLS on the Colombian Caribbean Coast
(BarranquillaIngeniería IndustrialSede Norte, 2020-06-10)techniques for wind speed forecasting. However, although there are multiple studies, none are set up for the Colombia Caribbean coast. This is a disadvantage because the potential of wind resources in this region is greater ...
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Non-Automatic Weighing Instruments Calibration: Parametric Methods for Outliers Assessments
(BarranquillaIngeniería MecánicaSede Norte, 2020-06-10)In the experimental calibration processes, several error of measure can be obtained. Usually, these values are called as outliers. The outliers impact in the instruments’ metrological reliability and, consequently, in the ...
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On Soft b-w-Open Sets
(BarranquillaMatemáticasSede Norte, 2020-06-13)In this paper, it used the notions of soft ω-open sets to introduce and study the concepts of soft b-ω-open sets. Moreover, some of their properties are shown. Furthermore, the concepts of soft b-T1 and soft b-T2 spaces ...
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Virtual Education for All: Systematic Review
(BarranquillaSede Norte, 2020-06-15)This article deals with the systematic review of the literature on virtual education for all. Accurately, this work responds to questions such as: What are the technological and pedagogical considerations to implement ...
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Dengue and COVID‐19, overlapping epidemics? An analysis from Colombia
(BarranquillaDoctorado en Medicina TropicalSede Norte, 2020-06-16)Coronavirus disease 2019 (COVID‐19), caused by severe acute respiratory syndrome coronavirus 2 (SARS‐CoV‐2), has rapidly spread throughout Latin America, a region swept by multiple previous and ongoing epidemics. There ...