Listar Artículos de investigación por título
Mostrando ítems 36-55 de 248
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Barrow holographic dark energy with Granda–Oliveros cutoff
(BarranquillaFísicaSede Norte, 2022-07-07)A study on the effects of implementing the Granda-Oliveros infrared cutoff in the recently introduced Barrow Holographic Dark Energy model is presented, and its cosmological evolution is investigated. We find how the ...
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Biocompatibility Assessment of Polylactic Acid (PLA) and Nanobioglass (n-BG) Nanocomposites for Biomedical Applications
(BarranquillaQuímicaSede Norte, 2022-06-06)Scaffolds based on biopolymers and nanomaterials with appropriate mechanical properties and high biocompatibility are desirable in tissue engineering. Therefore, polylactic acid (PLA) nanocomposites were prepared with ...
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Biocompatibility Assessment of Two Commercial Bone Xenografts by In Vitro and In Vivo Methods
(BarranquillaSede Norte, 2022-06-30)Bone substitutes based on xenografts have been used for a long time in bone regeneration thanks to their inductive capacity for bone tissue regeneration. Some bone-based scaffolds have been modified by adding collagen and ...
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Bright neodymium complexes for efficient near infra-red organic light emitting diodes
(BarranquillaFísicaSede Norte, 2020-07-22)This paper reports the synthesis, structures, photophysics and optoelectronics of three NIR-emitting ternary neodymium tris b-diketonate complexes, [Nd(hfpd)3(L)n=1–2(H2O)x=0–2](H2O)y=0–1 (hfpd = anionic form of ...
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Cacao pod husk flour as an ingredient for reformulating frankfurters: Effects on quality properties
(BarranquillaEspecialización Tecnológica en Calidad de la Producción de AlimentosSede Norte, 2021-05-30)The cocoa pod husk is considered a source of dietary fiber with a high content of watersoluble pectins, bioactive compounds which should be viewed as a by-product with the potential to be incorporated into food. This study ...
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Calidad de servicio como elemento clave de la responsabilidad social en pequeñas y medianas empresas
(BarranquillaAdministración de EmpresasSede Norte, 2020-08-01)El presente estudio analizó la calidad de servicio como elemento clave para cumplir con la responsabilidad social en pequeñas y medianas empresas (pymes). La metodología fue descriptiva, no experimental y de campo. La ...
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CALIDAD DE VIDA LABORAL EN CARTAGENA, BARRANQUILLA Y SANTA MARTA
(BarranquillaSede Norte, 2020-01-10)Recientemente, las principales ciudades del Caribe colombiano han alcanzado las menores cifras de desempleo en el país. Sin embargo, presentan altas tasas de informalidad. Así, este artículo tiene como objetivo analizar ...
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Caracterización del emprendimiento desde un enfoque universitario
(BarranquillaAdministración de EmpresasSede Norte, 2022-02-05)Esta investigación buscó analizar las acepciones vinculadas al emprendimiento, articulando esta indagación con las necesidades y expectativas que actualmente se vienen exponiendo al respecto. La metodología fue de corte ...
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Catalytic effect of zinc sulfate and ferric sulfate on lignin pyrolysis
(BarranquillaLicenciatura en Ciencias NaturalesSede Norte, 2017-12-12)Recurriendo al uso de la técnica análisis termogravimétrico, se estudió el efecto del sulfato de zinc y del sulfato férrico en el proceso de pirólisis de la lignina a tres velocidades de calentamiento. Se encontró que la ...
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CFD characterization and optimization of the cavitation phenomenon in dredging centrifugal pumps
(BarranquillaIngeniería MecánicaSede Norte, 2019-12-25)A model has been developed to characterize the cavitation phenomenon in dredging centrifugal pumps. The operating parameters of a cutter type dredger: swing speed, dredging depth, and inclination, impeller rpm, as well ...
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Characterization of chlorogenic acids (CGA) and nine isomers in an F2 population derived from Coffea arabica L.
(BarranquillaSede Norte, 2020-04-13)ABSTRACT Chlorogenic acids (CGA) and their isomers have been associated with sensory attributes of the coffee beverage such as acidity, astringency, and bitterness. They have been linked to coffee rust resistance and ...
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Chromatographic analysis of phytochemicals in the peel of Musa paradisiaca to synthesize silver nanoparticles
(BarranquillaSede Norte, 2021-05-21)This research work usedMusa paradisiaca(banana) peels as a natural solvent,assorted with the precursorAgNO3(10 mM) to perform the green synthesis of silvernanoparticles. The phytochemical components present in theMusa ...
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CLASSES OF ALGEBRAS AND CLOSURE OPERATIONS
(BarranquillaSede Norte, 2021-02-17)The calculus of classes and closure operations has proved to be a useful tool in group theory and has led to a deep theory in the study of finite soluble groups. More recently, parallel theories have started to be ...
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Clientelismo personalizado en Colombia: una aproximación histórico-institucional a un estudio de caso
(BarranquillaLicenciatura en Ciencias SocialesSede Norte, 2021-05-17)Gran parte de la literatura politológica considera que el clientelismo es dañino para las democracias. En menor medida, otras aproximaciones estiman que el clientelismo es un mecanismo de atención de demandas para poblaciones ...
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Colombian Essential Oil of Ruta graveolens against Nosocomial Antifungal Resistant Candida Strains
(BarranquillaIngeniería AgroindustrialSede Norte, 2021-05-14)Drug resistance in antifungal therapy, a problem unknown until a few years ago, is increasingly assuming importance especially in immunosuppressed patients and patients receiving chemotherapy and radiotherapy. In the ...
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Combining Energy Management Indicators and Life Cycle Assessment Indicators to Promote Sustainability in a Paper Production Plant
(BarranquillaIngeniería MecánicaSede Norte, 2020-06-21)This paper presents the application of an energy characterization method based on the ISO 50001 standard in a dry paper production plant. This plant operates using electricity, gas, and coal as energy sources. The last ...
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Combustion and Performance Evaluation of a Spark Ignition Engine Operating with Acetone–Butanol–Ethanol and Hydroxy
(BarranquillaFísicaSede Norte, 2021-06-07)Alternative fuels for internal combustion engines (ICE) emerge as a promising solution for a more sustainable operation. This work assesses combustion and performance of the dual-fuel operation in the spark ignition (SI) ...
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Combustion and Performance Study of Low-Displacement Compression Ignition Engines Operating with Diesel–Biodiesel Blends
(BarranquillaIngeniería MecánicaSede Norte, 2020-01-30)This study investigated the influence of di erent biodiesel blends produced from residual sunflower oil and palm oil from agroindustry liquid waste on the characteristics of the combustion process, performance, and ...
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Comercio electrónico y las tendencias tributarias del sector gastronómico en Colombia durante la COVID-19
(BarranquillaSede Norte, 2022-03-30)El artículo, se orientó a caracterizar el Comercio electrónico y las tendencias tributarias del sector gastronómico en Colombia durante la Covid-19. La metodología fue descriptiva, no experimental de campo, la población ...
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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, ...