Investigaciones: Envíos recientes
Mostrando ítems 221-240 de 390
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Globalización y migraciones internacionales. Claves analíticas de los emigrantes colombianos retornados a la región Caribe
(BarranquillaLicenciatura en Ciencias SocialesSede Norte, 2021-11-22)Esta obra es el resultado de un proyecto de investigación titulado: “Globalización y migraciones internacionales: claves analíticas de los emigrantes colombianos retornados a la región Caribe”. Proyecto CH41-CEI-2019, ...
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Los acuerdos y la idealización del palenque en la provincia de Cartagena: el caso del Totumo (1714-1767)
(BarranquillaSede Norte, 2019-03-07)Si bien la vía militar ha sido el mecanismo más publicitado con el cual se intentó resolver los conflictos que se presentaron entre los cimarrones y las autoridades coloniales, no fue el único. Prueba de esto, el presente ...
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Estudio cualitativo y algebraico de sistemas diferenciales multiparamétricos
(BarranquillaSede Norte, 2020-12-30)En la actualidad, la ciencia y la tecnología se han convertido en herramientas fundamentales para explicar los diferentes hechos que ocurren en la naturaleza y sus posibles causas. Hoy en día el hombre las utiliza con el ...
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An update on the spider genus Caponina Simon (Araneae: Caponiidae) with descriptions of three new six-eyed species from Colombia
(BarranquillaBiologíaSede Norte, 2022-04-14)Three new six-eyed species of the spider genus Caponina Simon, 1891 are described, photographed, diagnosed and illustrated: C. alejandroi sp. nov. (male and female) from the Boyacá Department, C. bochalema sp. nov. (male) ...
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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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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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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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Design, characterization and quantum chemical computations of a novel series of pyrazoles derivatives with potential anti-proinflammatory response
(BarranquillaQuímicaSede Norte, 2020-06-24)The synthesis and characterization of the full family of 11 pyrazoles were performed by means of UV–Vis, FTIR, 1 H NMR, 13C NMR, two-dimensional NMR experiments and DFT simulations. As pyrazoles are known for showing ...
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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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Factors Shaping efl Preservice Teachers’ Identity Configuration
(BarranquillaSede Norte, 2020-09-17)Preservice efl teachers face many challenges when developing their practicum. Such an experience shapes their identity and influences the teaching and learning processes. This descriptive case study is about preservice ...
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Estudio cinético de la reactividad del oxígeno singulete con flavonoides y derivados de chalconas
(BarranquillaSede Norte, 2020-09-26)La actividad antioxidante es la propiedad de una sustancia para inhibir la degradación oxidativa y actúa principalmente a través de su capacidad para reaccionar con los radicales libres y oxígeno singulete. El desequilibrio ...
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Osseointegration of Antimicrobial Acrylic Bone Cements Modified with Graphene Oxide and Chitosan
(BarranquillaSede Norte, 2020-09-18)Acrylic bone cement (ABC) is one of the most used materials in orthopedic surgery, mainly for the fixation of orthopedic implants to the bone. However, ABCs usually present lack of biological activity and osseointegration ...
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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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Prevalence of dengue antibodies in healthy children and adults in different Colombian endemic areas
(BarranquillaSede Norte, 2019-05-23)Objectives: Colombia is a dengue hyperendemic country; however, the prevalence of antibodies against dengue in the general population including the inhabitants of rural areas is unknown. This study aimed to determine the ...
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Artificial Intelligence Assisted Mid-Infrared Laser Spectroscopy In Situ Detection of Petroleum in Soils
(BarranquillaQuímicaSede Norte, 2020-02-15)A simple, remote-sensed method of detection of traces of petroleum in soil combining artificial intelligence (AI) with mid-infrared (MIR) laser spectroscopy is presented. A portable MIR quantum cascade laser (QCL) was ...
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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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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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Sergio Guerra Vilaboy, Alejo Maldonado Gallardo y Roberto González Arana, Tres Revoluciones que estremecieron el continente en el siglo xx. México, Cuba y Nicaragua. Santa Marta: Editorial Unimagdalena, Ediciones Uninorte, 2020
(BarranquillaHistoriaSede Norte, 2022-01-01)Sin duda el trabajo investigativo de los profesores Sergio Guerra Vilaboy, Alejo Maldonado y Roberto Gonzalez Arana, constituye un destacado aporte para una mejor comprensión sobre tres revoluciones en la historia ...
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Medidas de Capacidad en una Práctica Artesanal de Pinar del Río, Barranquilla, Atlántico
(BarranquillaLicenciatura en MatemáticasSede Norte, 2022-06-23)Introducción: El problema de investigación consistió en la identificación de medidas de capacidad, involucradas en los procesos de la práctica artesanal de la elaboración del bollo de mazorca en el barrio Pinar del Río en ...
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Uncoupled Majorana fermions in open quantum systems: On the efficient simulation of non-equilibrium stationary states of quadratic Fermi models
(BarranquillaFísicaSede Norte, 2021-01-14)A decomposition of the non-equilibrium stationary state of a quadratic Fermi system influenced by linear baths is obtained and used to establish a simulation protocol in terms of tensor states. The scheme is then applied ...
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