Investigaciones: Envíos recientes
Mostrando ítems 181-200 de 390
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In ation in a scalar-vector-tensor theory
(BarranquillaFísicaSede Norte, 2022-01-17)In this work, we study in ation in a particular scalar-vector-tensor theory of gravitation without the U(1) gauge symmetry. The model is constructed from the more general action introduced in Heisenberg et al. (Phys Rev D ...
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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 ...
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Do-it-yourself methodology for calorimeter construction based in Arduino data acquisition device for introductory chemical laboratories
(BarranquillaSede Norte, 2020-03-10)Many experimental thermochemical laboratories require monitoring temperatures during a reaction or physical procedure. Nowadays, there are many alternatives to fulfill this requirement; however, they are expensive for basic ...
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Gait Analysis Using the Physics Toolbox App
(BarranquillaFísicaSede Norte, 2022-03-10)Sensors in new smartphones can be an excellent tool to measure different physical quantities and these can be useful to develop real experiments with application in human health. Therefore, in this research work, the design ...
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Assessment of Chitosan-Rue (Ruta graveolens L.) Essential Oil-Based Coatings on Refrigerated Cape Gooseberry (Physalis peruviana L.) Quality
(BarranquillaIngeniería MecánicaSede Norte, 2020-04-13)Cape gooseberry (Physalis peruviana L.) is one of the main exotic fruits in demand throughout the world market. However, this fruit has problems with physical and microbial decay causing losses up to thirty percent during ...
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Kineticcharacterizationandmodelingofamicroalgaeconsortium isolatedfromlandfillleachateunderahighCO2 concentrationinabubble columnphotobioreactor
(BarranquillaQuímicaSede Norte, 2020-01-28)Background: Thedeterminationofkineticparametersandthedevelopmentofmathematicalmodelsareofgreat interesttopredictthegrowthofmicroalgae,theconsumptionofsubstrateandthedesignofphotobioreactors focusedonCO2 capture.However ...
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In vitro anti-leishmanial effect of metallic meso-substituted porphyrin derivatives against Leishmania braziliensis and Leishmania panamensis promastigotes properties
(BarranquillaSede Norte, 2020-04-19)In this study, a family of porphyrins based on 5,10,15,20-Tetrakis(4-ethylphenyl)porphyrin (1, Ph) and six metallo-derivatives (Zn2+(2, Ph-Zn), Sn4+(3, Ph-Sn), Mn2+ (4, Ph-Mn), Ni2+ (5, Ph-Ni), Al3+ (6, Ph-Al), and V3+ ...
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Elaphidiini (Coleoptera, Cerambycidae) from the Caribbean region of Colombia: New species, taxonomic notes and new geographical records
(BarranquillaBiologíaSede Norte, 2020-03-04)Two new species of Elaphidiini from Colombia are described: Sphaerion costae sp. nov., and Mephritus costae sp. nov. The keys to species of Sphaerion Audinet-Serville, 1834 and Mephritus Pascoe, 1866 are translated and ...
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Neutrino interaction classification with a convolutional neural network in the DUNE far detector
(BarranquillaSede Norte, 2020-11-10)The Deep Underground Neutrino Experiment is a next-generation neutrino oscillation experiment that aims to measure CP-violation in the neutrino sector as part of a wider physics program. A deep learning approach based ...
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Design, construction and operation of the ProtoDUNE-SP Liquid Argon TPC
(BarranquillaSede Norte, 2022-01-04)The ProtoDUNE-SP detector is a single-phase liquid argon time projection chamber (LArTPC) that was constructed and operated in the CERN North Area at the end of the H4 beamline. This detector is a prototype for the first ...
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Nanocomposite Films of Chitosan-Grafted Carbon Nano-Onions for Biomedical Applications
(BarranquillaSede Norte, 2020-03-07)The design of sca olding from biocompatible and resistant materials such as carbon nanomaterials and biopolymers has become very important, given the high rate of injured patients. Graphene and carbon nanotubes, for ...
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Effects of agitation rate and dissolved oxygen on xylose reductase activity during xylitol production at bioreactor scale
(BarranquillaLicenciatura en Ciencias NaturalesSede Norte, 2022-01-05)The study of xylose reductase (XR) - one of the key enzymes in the production of xylitol - is important in the fermentation process to have maximum efficiency in the bioconversion of xylose to xylitol in lignocellulosic ...
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Long-baseline neutrino oscillation physics potential of the DUNE experiment
(BarranquillaSede Norte, 2020-10-22)The sensitivity of the Deep Underground Neutrino Experiment (DUNE) to neutrino oscillation is determined, based on a full simulation, reconstruction, and event selection of the far detector and a full simulation and ...
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Influence of Atmospheric Cold Plasma Exposure on Naturally Present Fungal Spores and Physicochemical Characteristics of Sundried Tomatoes (Solanum lycopersicum L.)
(BarranquillaIngeniería AgroindustrialSede Norte, 2022-01-13)This research aimed to evaluate the impact of atmospheric cold plasma (ACP) treatment on the fungal spores naturally present in sundried tomatoes, as well as their influence on the physicochemical properties and antioxidant ...
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Pronombres en wayuunaiki y español: una mirada contrastiva
(BarranquillaMaestría en LingüísticaSede Norte, 2022-02-11)La literatura relacionada con estudios contrastivos entre lenguas nativas de Colombia y el español es muy escasa. En aras de contribuir al cambio de esta realidad, este estudio ofrece un análisis contrastivo de los ...
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A GENERALIZATION OF THE STRONGLY CESARO ´ IDEAL CONVERGENCE THROUGH DOUBLE SEQUENCE SPACES
(BarranquillaSede Norte, 2020-12-02)In this paper, some algebraic properties of Ces´aro double ideal convergent sequence spaces are defined and proved. Those spaces are defined as C I nm and C I 0nm. Furthermore, this paper shows some inclusion relations ...
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Cátedra Universitaria: –Breve aproximación histórico-filosófica al ser de la Universidad en general y un acercamiento al Alma Mater del Atlántico en particular–
(BarranquillaSede Norte, 2022-05-08)Este es un libro producto de una compilación bibliográfica y documental que busca el rescate de la memoria histórica sobre los orígenes y esencia de la Universidad como una Institución de la humanidad, su traslado a América ...
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Imaginarios sociales sobre las lesbianas en Barranquilla
(BarranquillaSede Norte, 2020-06-01)El discurso de los derechos humanos y ciudadanía se ha constituido en un componente importante en las democracias en vía de desarrollo, pues legitima los derechos sociales, económicos y políticos a partir de reformas ...
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Effects of Environmental Conditions on Photovoltaic Generation System Performance with Polycrystalline Panels
(BarranquillaSede Norte, 2021-10-31)Photovoltaic solar energy is the third most widely used renewable source worldwide, after hydroelectric and wind energy, and this energy source requires experimental and theoretical development in specific topics such as ...
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Supernova neutrino detection in NOvA
(BarranquillaSede Norte, 2020-10-05)The NOvA long-baseline neutrino experiment uses a pair of large, segmented, liquid-scintillator calorimeters to study neutrino oscillations, using GeV-scale neutrinos from the Fermilab NuMI beam. These detectors are also ...
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