Investigación: Recent submissions
Now showing items 381-400 of 499
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Measuring contribution of infoplazas to internet penetration and use in Panama
(2004-12)infoplazas arose in Panama as means to combat the digital gap by providing Internet connectivity to the economically disadvantaged and geographically remote. Yet there is a dearth of information regarding their actual ... -
Effectiveness of natural antioxidants in sunflower oil
(2005-06-27)The antioxidant activity of ∝- and δ-tocopherol, citric acid, ascorbic acid and ascorbyl palmitate was investigated in sunflower oil containing naturally occurring tocopherol. The effectiveness of natural antioxidants in ... -
Preparación de Películas de Óxidos de Estaño Como Sensores de Gases
(2009-06)Se obtuvieron películas delgadas de Óxido de Estaño (SnO2) por el método de química líquida a partir de una solución precursora de Cloruro de Estaño IV (SnCl4). Las muestras fueron depositadas sobre sustrato de vidrio ... -
Roughness measurement of paper using speckle
(2011-09-02)We present a method of measure of the roughness of the paper based on the analysis of a speckle pattern on the surface. Images of speckle over the surface of paper are captured by means of a simple configuration using a ... -
Seismic Response of Single-Degree-of-Freedom (SDOF) Structural Fuse Systems
(2004-06-26)Passive energy dissipation (PED) devices have been implemented to enhance structural performance by reducing seismically induced structural damage. In this paper metallic dampers are defined to be structural fuses (SF) ... -
Investigation of the Structural Fuse Concept
(2005-06-26)Passive energy dissipation (PED devices have been implemented to enhance structural performance by reducing seismically induced structural damage. In this paper metallic dampers are defined to be structural fuses (SF) when ... -
Seismic Design of Multi-story Buildings with Metallic Structural Fuses
(2006-06-28)Seismic design relies on inelastic deformations through hysteretic behavior. However, this translates into damage on structural elements, permanent system deformations following an earthquake, and possibly high cost for ... -
Monitoring of Levels Moisture Soil Based on Electroresistive Methods: Case of the Gamboa Area, Panama Canal
(2010-07-02)El objetivo principal de esta primera etapa de investigación se centra en obtener información referente a las características de los niveles freáticos en dos importantes zonas del sitio de Gamboa – área del Canal de Panamá: ... -
Study of The Corrosion Products Formed on Carbon Steels in The Tropical Atmosphere of Panama
(2003-06-25)Mössbauer spectroscopy and X-ray powder diffraction (in selected samples) have been used to characterize corrosion products on carbon steels after atmospheric exposure to the tropical Panamanian locations of Panama and ... -
Prospección Geofísica Aplicada a la Arqueología – Importancia de los Procesos de Modelización y Simulación Numérica
(2008-06-30)Los últimos años del siglo veinte se caracterizaron por el desarrollo de grandes proyectos científicos de los cuales conviene mencionar la aparición de medios de cálculo computacionales; estas herramientas permiten ... -
Seismic Response of Single-Degree-of-Freedom Systems with Structural Fuses
(2004-06-25)Passive energy dissipation (PED) devices have been implemented to enhance structural performance by reducing seismically induced structural damage. In this article, metallic dampers are defined to be structural fuses (SF) ... -
Floor Response of SDOF Systems with Metallic Structural Fuses
(2004-06-26)The floor demands of Single-Degree-of-Freedom (SDOF) systems designed or retrofitted with metallic structural fuses are studied in this article. Floor velocity and acceleration are obtained and comparisons are made between ... -
Seismic Response of Hybrid Systems with Metallic and Viscous Dampers
(2016-06-27)Metallic dampers can enhance structural performance by reducing seismically induced lateral displacements, and by reducing inelastic behavior of beams and columns. Limiting story drift also indirectly allows for mitigation ... -
Experimental Validation of the Structural Fuse Concept
(2008-06-30)Seismic design relies on inelastic deformations through hysteretic behavior. However, this translates into damage on structural elements, permanent system deformations following an earthquake, and possibly high cost for ... -
Geophysical Investigations in the Old Panama Archaeological Site
(2006-06-28)The results of geophysical prospections in an archaeological site of hispanic type in Panama (Central America) are presented in this article. The archaeological site of Old Panama has been intensively investigated with the ... -
Analytical Investigation of the Structural Fuse Concept
(2006-06-28)Passive energy devices (PED) are useful to enhance structural performance by reducing seismically induced structural damage. Metallic dampers are one such PED. When they are designed such that all damage is concentrated ... -
Using the Micro – Resistivity Method to Detect Hispanic Ancient Floors at Nombre de Dios, Panama
(2010-07-02)This article describes the application of the method of electric prospection to the detection of floors of hispanic type associated with the site of Nombre de Dios. This site represents an important and ancient Spanish ... -
Analysis of Short-term Steel Corrosion Products Formed in Tropical Marine Environments of Panama
(2012-07-05)The phases and compositions of the corrosion products of a mild steel (A-36) and two weathering steels (A-588 and COR 420) formed after 3 months exposure to the tropical marine atmosphere of Panama were examined using FTIR ... -
Study of Seasonal Rainfall Infiltration Via Time-Lapse Surface Electrical Resistivity Tomography: Case Study of Gamboa Area, Panama Canal Watershed
(2013-12-18)The present investigation was focused on the variations in rainwater infiltration experienced by soils of Gamboa zone (Panama Canal Watershed) during various seasons of the year, employing a time-lapse analysis of electrical ... -
Restricción del Río Caimito para Uso Recreativo según el Índice de calidad de Agua 2004
(2013-07-05)Debido al crecimiento vertiginoso de las áreas suburbanas por falta de planificación y desconocimiento de la población y su interrelación con el medio ambiente, se contaminan nuestras fuentes de agua potable. El Río Caimito, ...