Investigaciones: Envíos recientes
Mostrando ítems 301-320 de 390
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FT-NIR spectroscopy and RP-HPLC combined with multivariate analysis reveals differences in plant cell suspension cultures of Thevetia peruviana treated with salicylic acid and methyl jasmonate
(BarranquillaSede Norte, 2020-08-10)Plant cell suspension culture of T. peruviana is a feasible biotechnological platform for the production of secondary metabolites with anti-proliferative/cytotoxic activity, as phenolic compounds (PC); however, different ...
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Effect of the Gallium and Vanadium on the Dibenzothiophene Hydrodesulfurization and Naphthalene Hydrogenation Activities Using Sulfided NiMo-V2O5/Al2O3-Ga2O3
(BarranquillaQuímicaSede Norte, 2020-08-07)The effect of Ga and V as support-modifier and promoter of NiMoV/Al2O3-Ga2O3 catalyst on hydrogenation (HYD) and hydrodesulfurization (HDS) activities was studied. The catalysts were characterized by elemental analysis, ...
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Acrylic Bone Cements Modified with Graphene Oxide: Mechanical, Physical, and Antibacterial Properties
(BarranquillaSede Norte, 2020-08-07)Bacterial infections are a common complication after total joint replacements (TJRs), the treatment of which is usually based on the application of antibiotic-loaded cements; however, owing to the increase in ...
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Reduction of Postharvest Quality Loss and Microbiological Decay of Tomato “Chonto” (Solanum lycopersicum L.) Using Chitosan-E Essential Oil-Based Edible Coatings under Low-Temperature Storage
(BarranquillaIngeniería AgroindustrialSede Norte, 2020-08-13)The tomato (Solanum lycopersicum L.) is one of the many essential vegetables around the world due to its nutritive content and attractive flavor. However, its short shelf-life and postharvest losses affect its marketing. ...
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Removal of the direct navy-blue dye on modified coffee bean
(BarranquillaSede Norte, 2019-10-19)The presence of dyes in water bodies inhibits the penetration of light, affecting the flora and fauna of these ecosystems, which is why, greater efforts are made to eliminate them before being poured. This study allowed ...
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Exergetic analysis of a dual-fuel engine, PEM electrolyzer and thermoelectric generator integrated system
(BarranquillaIngeniería MecánicaSede Norte, 2020-08-12)In this research, the implementation of an integrated system composed of a dual-fuel engine (Diesel-Hydrogen), a PEM electrolyzer and a thermoelectric generator is envisioned. In order to know the optimal operating ...
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Desarrollo integral de procesos de adaptación al cambio en pequeñas y medianas empresas
(BarranquillaAdministración de EmpresasSede Norte, 2020-10-01)El presente estudio estuvo orientado al análisis del desarrollo integral de procesos de adaptación al cambio en pequeñas y medianas empresas (pymes) de servicios tecnológico. Esta es una investigación descriptiva no ...
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Método de control estadístico multivariante para valorar las dimensiones de calidad en una empresa de lavado de tanques industriales
(BarranquillaIngeniería IndustrialSede Norte, 2020-10-01)Esta investigación propone un método para valorar las dimensiones de calidad del servicio en una empresa de lavado de tanques industriales, articulando una carta de control y un nuevo indicador de calidad multivariante. ...
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Synthesis of 3-Aroyl-4-heteroarylpyrrole Derivatives by the Van Leusen Method
(BarranquillaSede Norte, 2022-02-15)The synthesis and structural diversification of N-heterocycles systems have attracted much attention because of their potential applications. Three 6-aryl-3-methyl-1-phenyl-1H-pyrazolo[3,4- b]pyridine-5-carbaldehyde 4 ...
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Resolución de problemas en química: descifrando métodos, errores, obstáculos, temáticas y aplicabilidad usando N-Vivo
(BarranquillaIngeniería IndustrialSede Norte, 2022-02-15)El alcance de esta investigación fue identificar los métodos, los errores y los obstáculos reconocidos por los estudiantes, y las temáticas y la aplicabilidad que los profesores le otorgan a la resolución de problemas en ...
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Demanda de servicios y posgrados de salud en la Región Caribe de Colombia y en Bogotá D.C.
(BarranquillaSede Norte, 2022-02-06)El objetivo de este estudio es analizar la importancia que tienen los programas formativos de posgrado en el área de la salud para la satisfacción de la demanda de servicios de salud en Colombia. Se comparan la oferta de ...
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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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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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Legitimación de la violencia en parejas heterosexuales desde el género como una de las estructuras de práctica social
(BarranquillaSede Norte, 2020-08-25)Este artículo tuvo como objetivo develar las representaciones sociales de mujeres víctimas, agresores y prestatarios/as de servicios legitimadoras de violencia de pareja desde la estructura de género y práctica social ...
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Experimental assessment of performance and emissions for hydrogen-diesel dual fuel operation in a low displacement compression ignition engine
(BarranquillaIngeniería QuímicaSede Norte, 2022-04-01)The combustion of pure H2 in engines is still troublesome, needing further research and development. Using H2 and diesel in a dual-fuel compression ignition engine appears as a more feasible approach. Here we report an ...
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Innovación en las micro, pequeñas y medianas empresas familiares del sector manufacturero del Atlántico-Colombia*
(BarranquillaSede Norte, 2020-09-01)Las micro, pequeñas y medianas empresas manufactureras se enfrentan cada día a un panorama altamente competitivo en el cual la innovación constituye un factor esencial hacia la consolidación de sus planes en el mercado, ...
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Resistencia antibiótica: el papel del hombre, los animales y el medio ambiente
(BarranquillaSede Norte, 2019-05-30)Los microorganismos, especialmente las bacterias, están distribuidos por todo el mundo, desde el suelo, los mares y los ríos hasta el sistema digestivo de los animales y los seres humanos; por lo tanto, las bacterias ...
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Condensation driven by a quantum phase transition
(BarranquillaFísicaSede Norte, 2022-03-22)The grand canonical thermodynamics of a bosonic system is studied in order to identify the footprint of its own high-density quantum phase transition. The phases displayed by the system at zero temperature establish ...
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Time-reversal symmetry breaking in a square lattice
(BarranquillaSede Norte, 2021-04-06)The bulk conductivity of a two-dimensional system is studied assuming that time-reversal symmetry is broken by internal mechanisms. The study is carried out by direct diagonalization in order to explore the nonlinear-response ...
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Time-reversal symmetry breaking in a square lattice
(BarranquillaFísicaSede Norte, 2021-04-06)The bulk conductivity of a two-dimensional system is studied assuming that time-reversal symmetry is broken by internal mechanisms. The study is carried out by direct diagonalization in order to explore the nonlinear-response ...
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