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Effect of pyrolysis, impregnation, and calcination conditions on the physicochemical properties of TiO2/Biochar composites intended for photocatalytic applications
(Cartagena de IndiasCampus TecnológicoIngeniería Ambiental, 2023-06-02)Biochars are outstanding materials obtained from the pyrolysis of biomass, possessing unique physicochemical properties that are attractive for many environmental applications, including photocatalysis. In this work, we ... -
EFFECT of the ENVIRONMENTAL CONDITIONS of TROPICAL CLIMATES on the PERFORMANCE PARAMETERS of A GAS TURBINE POWER GENERATION PLANT Fajardo J. ; Barreto D. ; Castro T. ;
(Cartagena de Indias, 2020)It is known that high temperatures adversely affect the performance of gas turbines, but the effect of the combination of atmospheric conditions (temperature and relative humidity -RH- ) on the operation of this type of ... -
Effect of the financial structure on the liquidity risk of SMEs in Cartagena as a base of project formulation
(Cartagena de IndiasContaduría Pública, 2023-06-09)The Liquidity Risk in Small and Medium Enterprises - SMEs in the City of Cartagena-Colombia is analyzed, based on the determination of their Capital Structure. The variables, liquidity risk (dependent) and capital structure ... -
Effect of the non-stationarity of rainfall events on the design of hydraulic structures for runoff management and its applications to a case study at Gordo Creek watershed in Cartagena de Indias, Colombia
(MDPI AG, 2018)The 24-h maximum rainfall (P 24h-max ) observations recorded at the synoptic weather station of Rafael Núñez airport (Cartagena de Indias, Colombia) were analyzed, and a linear increasing trend over time was identified. ... -
Effect of Speckle Filtering in the Performance of Segmentation of Ultrasound Images Using CNNs
(Cartagena de Indias, 2022)The convolutional neural networks (CNNs) as tools for ultrasound image segmentation often have their performance affected by the low signal-to-noise ratio of the images. This prevents a correct classification and extraction ... -
Effective Perihelion Advance and Potentials in a Conformastatic Background with Magnetic Field
(Hindawi Limited, 2016)Exact solutions of the Einstein-Maxwell field equations for a conformastatic metric with magnetized sources are investigated. In this context, effective potentials are studied in order to understand the dynamics of the ... -
Effectiveness of a visual noise warning system on noise levels in a surgical ICU: A quality improvement programme
(Lippincott Williams and Wilkins, 2019)BACKGROUNDThe effects of noise are harmful to patients in the ICU environment, and the latter are particularly noisy places. High noise levels seem to be a factor in sleep disturbance, which can, in turn, result in increased ... -
Effects of Different Concentrations of Arsine on the Synthesis and Final Properties of Polypropylene
(Cartagena de Indias, 2022-07-31)This article studies the effects of arsine on the synthesis and thermal degradation of 4 sam ples of virgin polypropylene (PP-virgin) and proposes reaction mechanisms that allow understanding of its behaviour. Different ... -
Effects of orifice sizes for uncontrolled filling processes in water pipelines
(Cartagena de Indias, 2022-03-12)The sizing of air valves during the air expulsion phase in rapid filling processes is crucial for design purposes. Mathematical models have been developed to simulate the behaviour of air valves during filling processes ... -
Efficiency analysis trees as a tool to analyze the quality of university education
(Cartagena de Indias, 2023)This research aims to design a quality management tool in education. The methodology comprises two stages: first, the construction of the decision tree model, and second, the efficiency evaluation. For the validation and ... -
Efficiency Centered Maintenance of Preheat Train of a Crude Oil Distillation Unit
(Cartagena de Indias, 2020)Nowadays, maintenance is based on the synergistic integration of operational reliability and timely maintenance, which guarantees the required availability and optimal cost. Operational reliability implies producing more, ... -
EFFICIENCY OF ACADEMIC ENGINEERING PROGRAMS IN COLOMBIA: AN APPROACH THROUGH DATA ENVELOPMENT ANALYSIS
(Cartagena de Indias, 2022)The purpose of this research is to assess the educational quality based on academic efficiency using three distinct data development analysis models, with the Engineering programs in Colombia serving as decision-making ... -
Efficient Day-Ahead Dispatch of Photovoltaic Sources in Monopolar DC Networks via an Iterative Convex Approximation
(Cartagena de Indias, 2023)The objective of this research is to propose an efficient energy management system for photovoltaic (PV) generation units connected to monopolar DC distribution networks via convex optimization while considering a day-ahead ... -
Efficient Integration of PV Sources in Distribution Networks to Reduce Annual Investment and Operating Costs Using the Modified Arithmetic Optimization Algorithm
(Cartagena de Indias, 2022)The optimal integration of photovoltaic generation systems is a challenge for distribution utilities since these devices have a direct impact on company finances due to the large amount of investment required at the beginning ... -
Efficient operative cost reduction in distribution grids considering the optimal placement and sizing of d-statcoms using a discrete-continuous vsa
(Cartagena de IndiasCampus TecnológicoIngeniería Eléctrica, 2021-03-02)The problem of reactive power compensation in electric distribution networks is addressed in this research paper from the point of view of the combinatorial optimization using a new discrete-continuous version of the vortex ... -
Efficient PID Control Design for Frequency Regulation in an Independent Microgrid Based on the Hybrid PSO-GSA Algorithm
(Cartagena de Indias, 2022)Microgrids are a part of the power system that consists of one or more units of distributed generation and are expected to remain in operation after being disconnected from the system. Since they rely on overlying networks, ... -
Efficient reduction in the annual investment costs in ac distribution networks via optimal integration of solar pv sources using the newton metaheuristic algorithm
(Cartagena de Indias, 2021-12-05)This research addresses the problem of the optimal placement and sizing of (PV) sources in medium voltage distribution grids through the application of the recently developed Newtonmetaheuristic optimization algorithm ... -
El Covid-19 y los efectos económicos generados a la ciudad de Cartagena /
(2020)Este documento explora la elaboración de un artículo publicable; con la finalidad de analizar el grado de afectación económica presentada en la ciudad de Cartagena a causa de la llegada de la pandemia COVID – 19. Se ... -
El Distrito de Riego de La Doctrina (Lorica-Córdoba) : ¿palma vs arroz? análisis de los conflictos ambientales y sociales en el territorio. /
(2020)El presente trabajo es un análisis de estudio de caso que analiza la problemática del distrito de riego de La Doctrina el cual involucra conflictos ambientales y sociales por la implementación de cultivo de palma y el ... -
El endomarketing como estrategia para la fidelización del cliente interno /
(2020)Las organizaciones han comprendido que las personas representan, el recurso más valioso para el cumplimiento de los objetivos y metas. En la búsqueda por lograr incrementar y mantener la motivación y compromiso laboral, ...
Universidad Tecnológica de Bolívar - 2017 Institución de Educación Superior sujeta a inspección y vigilancia por el Ministerio de Educación Nacional. Resolución No 961 del 26 de octubre de 1970 a través de la cual la Gobernación de Bolívar otorga la Personería Jurídica a la Universidad Tecnológica de Bolívar.