Listar Artículos de investigación por título
Mostrando ítems 47-66 de 248
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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, ...
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Comparative Study of the Reaction Kinetics of Three Residual Biomasses
(BarranquillaIngeniería AgroindustrialSede Norte, 2021-03-01)Kinetic analysis for the combustion of three agro-industrial biomass residues (coconut husk, corn husk, and rice husk) was carried out in order to provide information for the generation of energy from them. The analysis was ...
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Comparison between the dissolution profiles of prolonged-release ciprofloxacin tablets available in the Colombian market
(BarranquillaQuímicaSede Norte, 2022-03-05)Two 1,000 mg prolonged-release ciprofloxacin (CIP) tablets marketed in Colombia were compared for quality control tests and dissolution profile as established in the United States Pharmacopeia 42-NF 37 and the Food and ...
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Comparison of Two Bovine Commercial Xenografts in the Regeneration of Critical Cranial Defects
(BarranquillaIngeniería QuímicaSede Norte, 2022-09-06)Autologous bone is the gold standard in regeneration processes. However, there is an endless search for alternative materials in bone regeneration. Xenografts can act as bone substitutes given the difficulty of obtaining ...
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Computational Analysis of Different Turbulence Models in a Vane Pump Simulation
(BarranquillaIngeniería MecánicaSede Norte, 2021-02-04)The study presents a computational analysis of a vane pump using two different turbulence models namely κ-ε and κ-ω. The geometry characteristics of the vane pump were obtained by disassembly and further measurements. ...
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Computed torque control of a 2-RR planar parallel robot
(BarranquillaIngeniería MecánicaSede Norte, 2017-07-06)The design, construction and control of a two degree-of-freedom planar mechanism with five bar and five joints are presented. Computed control torque strategy in the joint space was implemented in order to fulfill a kinematic ...
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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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Connectivity of bacterial assemblages along the Loa River in the Atacama Desert, Chile
(BarranquillaSede Norte, 2020-10-01)The Loa River is the only perennial artery that crosses the Atacama Desert in northern Chile. It plays an important role in the ecological and economic development of the most water-stressed region, revealing the impact ...
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Conocimiento Especializado del Profesor de Matemáticas en la Enseñanza de la Modelación de la Elipse a Través de Recursos Tecnológicos
(BarranquillaSede Norte, 2022-06-17)Introducción: en la enseñanza de las matemáticas el uso de recursos tecnológicos ha tomado importancia en las prácticas docentes. No obstante, en algunas ocasiones la no profesionalización de profesores en las aulas les ...
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Construcc ión de una identidad relacional caribeña en Doce cuentos peregrinos de Gabriel García Márquez
(BarranquillaSede Norte, 2022-07-18)En este trabajo se estudia la construcción de una identidad relacional caribeña planteada en Doce cuentos peregrinos a partir del análisis de la relación, la errancia y el posoccidentalismo, y del estudio del paisaje como ...
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Contribuciones de la distribución de la tierra al desarrollo de los países. Una revisión de la literatura
(BarranquillaSede Norte, 2020-11-12)La redistribución de la tierra favoreció el crecimiento económico de China, Corea del Sur, Japón y Taiwán. En estos países, la distribución, aunada al apoyo estatal, contribuyó en buena medida a la subsecuente industrialización ...
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Cristalización de vidrios bioactivos del sistema 31SiO2-11P2O5-(58-X) CaO –X MgO: influencia del tratamiento térmico y de la composición química
(BarranquillaSede Norte, 2021-08-30)En este trabajo se estudió la influencia de la composición química y del tratamiento térmico en la cristalización de biovidrios del sistema 31SiO2-11P2O5-(58-X) CaO –X MgO (X = 0, 2, 7, 16 y 32). El tratamiento térmico ...