Browsing Revista EIA by Title
Now showing items 65-84 of 212
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La ecuación en diferencias finitas de Riccati en el cálculo de baterías de extractores
(Escuela de Ingeniería de Antioquia EIA, 2014-05-08)This document exposes: 1) A brief reminder of the process for the extraction of phosphoric acid from phosphoric rock by extraction with dilute sulfuric acid in a battery of Dorr thickeners in countercurrent; 2) a mass ... -
Efecto de la densidad de corriente sobre la morfología y las propiedades electroquímicas en películas anódicas porosas, crecidas sobre AA 2024-T3
(Fondo Editorial EIA, 2013-11-18)This paper reports the results of a study about the corrosion electrochemical properties of the porous anodic films grown on aluminium alloys 2024 T3, obtained by DC technique at current densities of 10, 15 and 20 mA/cm2 ... -
Efecto de la temperatura sobre la resistencia a la tracción de algunos refuerzos de fibras para matrices cerámicas o poliméricas
(Fondo Editorial EIA, 2013-11-27)This paper presents a study of the thermomechanical properties of low carbon steel, AISI-SAE 304 stainless steel, aramid and carbon fibers. Moreover, surface aspect of mineral rock wool of and aluminosilicate wool ... -
Efecto del contenido de carbono sobre la resistencia al desgaste abrasivo de recubrimientos de CrC depositados por pulverización catódica magnetrón
(Fondo Editorial EIA, 2013-11-05)Chromium carbide coatings on steel are a good candidate for applications on forming and molding dies. The high mechanical strength, chemical resistance and high temperature stability of Cr3C2 phase can be compatible with ... -
Efecto del incremento en la turbiedad del agua cruda sobre la eficiencia de procesos convencionales de potabilización
(Fondo Editorial EIA, 2013-11-15)Environmental phenomena cause a strong impact in the variation of the quality of sources for drinking water, demanding that potable water treatment processes respond to these changes and maintain quality standards in the ... -
Efecto del ozono en la remoción de materia orgánica disuelta de un efluente secundario
(Fondo Editorial EIA, 2013-11-07)This paper presents the results of treatment with ozone and subsequent fractionation of dissolved organic matter (DOM) from secondary effluent from Cerro de la Estrella wastewater treatment plant located in Mexico City. ... -
Efectos del mercurio sobre algunas plantas acuáticas tropicales
(Civil, Ambiental Geológica e IndustrialEscuela de Ingeniería de Antioquia EIA, 2014-05-08)This paper describes the effects of mercury on some aquatic plants of the tropics and their habitats. Additionally, a protocol for toxicity tests in duckweed (Lemna minor) is recommended, and the results of preliminary ... -
Electronic system for experimentation in AC electrogravimetry I: technique fundamentals
(Civil, Ambiental Geológica e IndustrialEscuela de Ingeniería de Antioquia EIA, 2014-05-07)Basic fundamentals of AC electrogravimetry are introduced. Their main requirements and characteristics are detailed to establish the design of an electronic system that allows the appropriate extraction of data needed ... -
Electronic system for experimentation in ac electrogravimetry II: implemented design
(Escuela de Ingeniería de Antioquia EIA, 2014-05-08)En este artículo se presenta una descripción detallada del sistema electrónico diseñado para mejorar las medidas en un sistema experimental de electrogravimetría AC. El sistema diseñado se encarga de adquirir los datos ... -
La empresa moderna en el marco de la corriente institucionalista.
(Administrativa, Financiera, Sistemas y ComputaciónEscuela de Ingeniería de Antioquia EIA, 2014-05-07)The inclusion by the current “New Institutional Economics” of the company privileges the economic analysis beginning with the man and the organization, instead of the market, therefore constructing an organizational theory ... -
Energía de enlace de excitones en pozos cuánticos de Gaas/Ga1-xa1xas
(Escuela de Ingeniería de Antioquia EIA, 2014-05-08)The use of low dimensional structures is a key technological element in the creation of new quantum functional devices in the development of the next generation of the electronic, photonic, and spintronic integrated ... -
Engineering materials surfaces by microfabrication techniques, to regulate in vitro cell functions: review
(Biomédica, Mecatrónica y MecánicaEscuela de Ingeniería de Antioquia EIA, 2014-05-07)Ha quedado claro que las propiedades superficiales de los materiales utilizados como sustratos para cultivo celular pueden influir en el comportamiento de las células afectando diferentes factores tales como la orientación ... -
Enseñanza de las ciencias desde una mirada de la didáctica de la Escuela Francesa
(Escuela de Ingeniería de Antioquia EIA, 2014-05-12)In science teaching variety of knowledge takes part: that of sciences, that of the scientist, the academic, that of the professor, the daily one, that of the student. In this paper a journey for some models of ... -
Estimación de las emisiones de contaminantes atmosféricos provenientes de fuentes móviles en el área urbana de Envigado, Colombia
(Fondo Editorial EIA, 2013-11-15)This research presents the results of estimates of air pollutants (CO, NOx, SO2, PM10 and VOC) from mobile sources in the urban area of the municipality of Envigado for 2010. We use information on vehicles registered in ... -
Estrategia de reducción para la aplicación generalizada de localizadores de fallas en sistemas de distribución de energía eléctrica
(Fondo Editorial EIA, 2013-11-08)This paper presents a generalized strategy applied to perform the reduction of power distribution systems composed by several tapped feeders into equivalent radial feeders, as basic procedure required to the generalized ... -
Estudio comparativo de dureza en dientes artificiales fabricados con diferentes tipos de resinas acrílicas
(Biomédica, Mecatrónica y MecánicaEscuela de Ingeniería de Antioquia EIA, 2014-05-08)There are available artificial teeth made of three types of acrylic resin: conventional, IPN (interpenetrating polymer network) and composite. When the properties of these acrylic teeth are compared with the natural ones, ... -
Estudio comparativo de la remoción de materia orgánica en humedales construidos de flujo horizontal subsuperficial usando tres especies de macrófitas
(Fondo Editorial EIA, 2013-11-21)Constructed wetlands appear at the present time like a promising technology in reducing the pollution by waste waters; this study investigated the organic matter removal with synthetic waste water, in terms of chemical ... -
Estudio de características cristalográficas, morfológicas, composicionales y eléctricas de varistores comerciales
(Biomédica, Mecatrónica y MecánicaEscuela de Ingeniería de Antioquia EIA, 2014-05-08)A comparative market existing products study is presented to define criteria with regard of which samples obtained by varistor research can be compared or to define quality control standards for consumers. Crystallographic ... -
Evaluación ambiental para procesos que usan residuos de la industria de los biocombustibles como materias primas
(Fondo Editorial EIA, 2013-10-24)The industry of biofuels generates a lot of amounts of residues, which could be used to produce added-value products. In this work, a Life Cycle Assessment (LCA) methodological approach was used in the cases of glycerol ... -
Evaluación de la resistencia de un aislado bacteriano nativo compatible con Pseudomona sp. al insecticida Lorsban 4 EC
(Biomédica, Mecatrónica y MecánicaEscuela de Ingeniería de Antioquia EIA, 2014-05-07)The resistance of an isolated bacterial culture compatible with Pseudomona sp. to the insecticide Lorsban 4 EC (active ingredient Chlorpyrifos) was evaluated at laboratory scale. The bacterial culture was isolated from ...