Artículos de investigación: Envíos recientes
Mostrando ítems 81-100 de 248
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Aplicación de la técnica LIBS en estudio del agua en el sendero “El Limón” del municipio de Palmar de Varela -Atlántico
(BarranquillaFísicaSede Norte, 2022-06-10)In this work, the application of Laser Induced Plasma Spectroscopy (LIBS) is presented as a complementary method for the study and characterization of an underground water sample from the “El Limón” trail in the municipality ...
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Factores asociados al desempleo de los migrantes venezolanos en la ciudad de Barranquilla, Colombia
(BarranquillaSede Norte, 2022-03-30)La migración es considerada un fenómeno social total; puesto que es un proceso que envuelve una gran cantidad de consecuencias, tanto positivas como negativas. El presente artículo se desarrolla con el objeto de determinar ...
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Factores atribuibles a la cancelación de cirugías programadas
(BarranquillaQuímicaSede Norte, 2020-03-30)Objetivo: Analizar los factores atribuibles a la cancelación de cirugías de una institución de salud de tercer nivel en la ciudad de Valledupar, Cesar, Colombia (2017-2018). Material y métodos: Estudio descriptivo, ...
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Economic and Exergo-Advance Analysis of aWaste Heat Recovery System Based on Regenerative Organic Rankine Cycle under Organic Fluids with Low GlobalWarming Potential
(BarranquillaIngeniería MecánicaSede Norte, 2020-03-12)The waste heat recovery system (WHRS) is a good alternative to provide a solution to the waste energy emanated in the exhaust gases of the internal combustion engine (ICE). Therefore, it is useful to carry out research ...
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Registrar la fiesta: cultura audiovisual LGBTI en Barranquilla
(BarranquillaSede Norte, 2022-01-17)En este artículo se analiza, a partir de un corpus audiovisual seleccionado por el autor, la realidad de las prácticas travestis, transformistas y drag queens en el Carnaval de Barranquilla, que ahora parecen gozar de ...
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Unveiling the age and origin of biogenic aggregates produced by earthworm species with their NIRS fingerprint in a subalpine meadow of Central Pyrenees
(BarranquillaSede Norte, 2020-08-12)In this study the near-infrared reflectance (NIR) spectra signals (750–2,500 nm) of soil samples was compared with the NIR signals of the biogenic aggregates produced in the lab by three earthworm species, i.e., Aporrectodea ...
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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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Optimization and Preliminary Physicochemical Characterization of Pectin Extraction from Watermelon Rind ( Citrullus lanatus) with Citric Acid
(BarranquillaIngeniería MecánicaSede Norte, 2022-01-06)Watermelon rind was used for the pectin extraction with citric acid as the extractant solvent. The effects of pH (2.0-3.0), extraction time (45-75 min), and liquid-solid ratio (10 : 1 to 40 : 1 mL/g) on the pectin yield, ...
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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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Measurement of neutrino-induced neutral-current coherent π0 production in the NOvA near detector
(BarranquillaSede Norte, 2020-07-09)The cross section of neutrino-induced neutral-current coherent π0 production on a carbon-dominated target is measured in the NOvA near detector. This measurement uses a narrow-band neutrino beam with an average neutrino ...
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Acrylic Bone Cement Incorporated with Low Chitosan Loadings
(BarranquillaSede Norte, 2020-07-21)Despite the potential of acrylic bone cement (ABC) loaded with chitosan (CS) for orthopedic applications, there are only a few in vitro studies of this composite with CS loading ≤ 15 wt.% evaluated in bioactivity tests ...
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ADHD Endophenotypes in Caribbean Families
(BarranquillaSede Norte, 2018-03-28)Objective: The aim of this study is to contrast the genetics of neuropsychological tasks in individuals from nuclear families clustering ADHD in a Caribbean community. Method: We recruited and clinically characterized 408 ...
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Análisis del éxito en las secuencias de finalización de los playoffs del fútbol profesional colombiano
(BarranquillaSede Norte, 2022-06-21)El objetivo del presente estudio fue examinar la influencia de las variables categóricas y el componente de éxito en las secuencias de finalización durante los playoffs del fútbol profesional colombiano (FPC) clausura 2017. ...
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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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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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