Listar Artículos de investigación por título
Mostrando ítems 102-121 de 248
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Evaluation of the Corrosion Resistance of AISI 316l Steel Subjected to Severe Deformation Using the Groove Pressing Technique
(BarranquillaSede Norte, 2019-11-25)In this investigation, samples of AISI 316L steel were subjected to severe plastic deformation by the groove pressing (GP) technique using 2 dies A2 type tool steel dies with dimensions of 96 mm X 96 mm, a corrugated die ...
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Evaluation of the energy recovery potential of thermoelectric generators in diesel engines
(BarranquillaIngeniería MecánicaSede Norte, 2019-09-12)Thermoelectric generation is an alternative to recover some of the wasted energy trough an exhaust of the internal combustion engines. This paper assesses the performance of a thermoelectric generator with 20 modules by ...
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Evaluation of the Zinc Sulfate Catalytic Effect in Empty Fruit Bunches Pyrolysis
(BarranquillaIngeniería MecánicaSede Norte, 2022-09-02)The effect of zinc sulfate as a catalyst on the pyrolysis of empty fruit bunches (EFB) from oil palm was assessed. Thus, a thermo-gravimetric analyzer coupled with a Fourier transform infrared spectroscopy (TG-FTIR) was ...
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Exergetic analysis of a dual-fuel engine, PEM electrolyzer and thermoelectric generator integrated system
(BarranquillaIngeniería MecánicaSede Norte, 2020-08-12)In this research, the implementation of an integrated system composed of a dual-fuel engine (Diesel-Hydrogen), a PEM electrolyzer and a thermoelectric generator is envisioned. In order to know the optimal operating ...
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Exergy, Economic, and Life-Cycle Assessment of ORC System for Waste Heat Recovery in a Natural Gas Internal Combustion Engine
(BarranquillaIngeniería MecánicaSede Norte, 2020-01-01)In this article, an organicRankine cycle (ORC)was integrated into a 2-MWnatural gas engine to evaluate the possibility of generating electricity by recovering the engine’s exhaust heat. The operational anddesignvariableswiththe ...
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Experimental assessment of emissions maps of a single-cylinder compression ignition engine powered by diesel and palm oil biodiesel-diesel fuel blends
(BarranquillaIngeniería MecánicaSede Norte, 2020-02-26)Diesel engines applications cover a broad spectrum, ranging from vehicles that transport passengers and move goods to specialized vehicles and equipment used in the construction and agriculture industries. However, diesel ...
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Experimental assessment of performance and emissions for hydrogen-diesel dual fuel operation in a low displacement compression ignition engine
(BarranquillaIngeniería QuímicaSede Norte, 2022-04-01)The combustion of pure H2 in engines is still troublesome, needing further research and development. Using H2 and diesel in a dual-fuel compression ignition engine appears as a more feasible approach. Here we report an ...
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La ética como etología. Naturalización de un problema filosófico
(BarranquillaFilosofíaSede Norte, 2022-03-07)Naturalizar ciertos problemas filosóficos no es tan problemático hoy como lo fue hace décadas. La excesiva especulación a la hora de reflexionar sobre ciertos temas, ha dado paso, paulatinamente, a una filosofía informada ...
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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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Factores contextuales que influyen en la intención emprendedora de estudiantes universitarios venezolanos y colombianos
(BarranquillaSede Norte, 2021-09-04)El emprendimiento se considera un área de investigación novedosa, recientemente ha tomado un gran auge, sobre todo como instrumento de políticas gubernamentales destinadas a fomentar el crecimiento de la actividad económica. ...
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Factores de gestión del conocimiento en entidad pública del sector de tránsito y transporte
(BarranquillaSede Norte, 2020-08-23)Desde una visión sistémica, la gestión del conocimiento afecta al proceso de toma de decisiones en las organizaciones que, en un entorno globalizado, deben plantear estrategias que posibiliten el incremento de la ...
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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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Financial Evaluation of Photovoltaic Energy Projects in Colombia
(BarranquillaSede Norte, 2020-09-01)The use of renewable sources, especially photovoltaics, has become a viable alternative as a supply of this vital element without destroying the environmental environment. In this sense, the main objective of the study ...
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First results on ProtoDUNE-SP liquid argon time projection chamber performance from a beam test at the CERN Neutrino Platform
(BarranquillaSede Norte, 2020-12-03)The ProtoDUNE-SP detector is a single-phase liquid argon time projection chamber with an active volume of 7.2 × 6.1 × 7.0 m3 . It is installed at the CERN Neutrino Platform in a specially-constructed beam that delivers ...
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FLEBOTOMINOFAUNA Y PRIMER REGISTRO DE Lutzomyia aclydifera (DIPTERA: PSYCHODIDAE) EN EL CARIBE COLOMBIANO
(BarranquillaLicenciatura en Ciencias NaturalesSede Norte, 2021-12-15)Uno de los focos de leishmaniasis más importante de Colombia está en Los Montes de María, Departamento de Bolívar, específicamente en El Carmen de Bolívar. A la fecha están registradas 19 especies del género Lutzomyia, en ...
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Formulation and existence of weak solutions for a problem of adhesive contact with elastoplasticity and hardening
(BarranquillaMatemáticasSede Norte, 2021-07-16)This paper presents the weak formulation of a quasi-static evolution model for two deformable bodies with unidirectional adhesive unilateral contact on which external loads act. Small deformations and linearized elastoplasticity ...
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Fourier expansion and integral representation generalized Apostol-type Frobenius–Euler polynomials
(BarranquillaMatemáticasSede Norte, 2020-09-29)The main purpose of this paper is to investigate the Fourier series representation of the generalized Apostol-type Frobenius–Euler polynomials, and using the above-mentioned series we find its integral representation. ...
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Fractional discrete vortex solitons
(BarranquillaFísicaSede Norte, 2021-02-09)We examine the existence and stability of nonlinear discrete vortex solitons in a square lattice when the standard discrete Laplacian is replaced by a fractional version. This creates a new, effective site-energy term, and ...
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FT-NIR spectroscopy and RP-HPLC combined with multivariate analysis reveals differences in plant cell suspension cultures of Thevetia peruviana treated with salicylic acid and methyl jasmonate
(BarranquillaSede Norte, 2020-08-10)Plant cell suspension culture of T. peruviana is a feasible biotechnological platform for the production of secondary metabolites with anti-proliferative/cytotoxic activity, as phenolic compounds (PC); however, different ...