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Mostrando ítems 101-120 de 390
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CALIDAD DE VIDA LABORAL EN CARTAGENA, BARRANQUILLA Y SANTA MARTA
(BarranquillaSede Norte, 2020-01-10)Recientemente, las principales ciudades del Caribe colombiano han alcanzado las menores cifras de desempleo en el país. Sin embargo, presentan altas tasas de informalidad. Así, este artículo tiene como objetivo analizar ...
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Use of sludge ash from drinking water treatment plant in hydraulic mortars
(BarranquillaIngeniería QuímicaSede Norte, 2020-01-13)The present study investigated the use of sludge ash from water treatment plants as supplementary cementing material, elaborating hydraulic mortars with different levels of cement replacement by sludge ash (10 wt% and 30 ...
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Parametric Analysis CFD of the Hydraulic Performance of a Centrifugal Pump with Applications to the Dredging Industry
(BarranquillaIngeniería MecánicaSede Norte, 2020-01-20)The present study aims to use the analysis of CFD in a centrifugal dredge pump, to predict by mathematical correlations the effect that changes in the main variables of the dredging process would have on the behavior and ...
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Neutrino Oscillation Analysis of 217 Live Days of Daya Bay and 500 Live Days of RENO
(BarranquillaSede Norte, 2020-01-22)We present a neutrino oscillation analysis of two particular data sets from the Daya Bay and RENO reactor neutrino experiments aiming to study the increase in precision in the oscillation parameters sin22θ13 and the effective ...
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Kineticcharacterizationandmodelingofamicroalgaeconsortium isolatedfromlandfillleachateunderahighCO2 concentrationinabubble columnphotobioreactor
(BarranquillaQuímicaSede Norte, 2020-01-28)Background: Thedeterminationofkineticparametersandthedevelopmentofmathematicalmodelsareofgreat interesttopredictthegrowthofmicroalgae,theconsumptionofsubstrateandthedesignofphotobioreactors focusedonCO2 capture.However ...
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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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A COMPREHENSIVE STUDY OF BIOFILMS GROWING ON THE BUILT HERITAGE OF A CARIBBEAN INDUSTRIAL CITY IN CORRELATION WITH CONSTRUCTION MATERIALS
(BarranquillaSede Norte, 2020-02-01)Biodeteriogens growing on constructions belonging to the built heritage is one of the leading natural pathologies that cause aesthetical and in some cases, physical-geochemical problems in the materials. In this study, for ...
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El Tiempo, uso y abuso
(BarranquillaArquitecturaSede Norte, 2020-02-01)Este artículo analiza y discute acerca de la razón fundamental por la que los estudiantes universitarios de la facultad de arquitectura de una universidad privada de Colombia, no utilizan bien el tiempo, en todas sus ...
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Matrix effects of the hydroethanolic extract and the butanol fraction of calyces from Physalis peruviana L. on the biopharmaceutics classification of rutin
(BarranquillaFarmaciaSede Norte, 2020-02-09)Objectives The Biopharmaceutics Classification System (BCS) categorizes active pharmaceutical ingredients according to their solubility and permeability properties, which are susceptible to matrix or formulation effects. ...
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Phytochemical Screening of Callus and Cell Suspensions Cultures of Thevetia peruviana
(BarranquillaQuímicaSede Norte, 2020-02-13)Thevetia peruviana is an ornamental shrub grown-up in many tropical region of the world. This plant produces secondary metabolites with biological properties of interest for the pharmaceutical industry. The objective was ...
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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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Obtención y caracterización de harinas compuestas de Cucurbita moschata D. y Cajanus cajan L. como fuentes alternativas de proteína y vitamina A
(BarranquillaSede Norte, 2020-02-17)Se estudió la utilización de guandul (Cajanus cajan L.) y ahuyama (Cucurbita moschata D.) como alternativas nutricionales y tecnológicamente viables para la elaboración de harinas compuestas con destino a la preparación ...
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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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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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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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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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TiO2 thin films sensitization with natural dyes extracted from Bactris guineensis for photocatalytic applications: Experimental and DFT study
(BarranquillaQuímicaSede Norte, 2020-03-11)TiO2 thin films, sensitized by an anthocyanins-rich extract of a common species found in the Colombian Caribbean region (Bactris guineensis fruits), were used for the photocatalytic degradation of methylene blue. The ...
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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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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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Energy, Economic, and Environmental Evaluation of a Proposed Solar-Wind Power On-grid System Using HOMER Pro®: A Case Study in Colombia
(BarranquillaSede Norte, 2020-04-02)The electrical sector in the Caribbean region of Colombia is currently facing problems that a ect its reliability. Many thermo-electric plants are required to fill the gap and ensure energy supply. This paper thus proposes ...