Browsing Ingeniería Civil by Title

Now showing items 16-35 of 45

    • Floor Response of SDOF Systems with Metallic Structural Fuses 

      Vargas, Ramiro (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 ...

    • Genetic diversity and connectivity remain high in Holothuria polii (Delle Chiaje 1823) across a coastal lagoon-open sea environmental gradient 

      Vergara-Chen, Carlos; González-Wangüemert, Mercedes; Marcos, Concepción; Pérez-Ruzafa, Ángel (2010-07-11)
      Coastal lagoons represent habitats with widely heterogeneous environmental conditions, particularly as regards salinity and temperature, which fluctuate in both space and time. These characteristics suggest that physical ...

    • Geophysical Investigations in the Old Panama Archaeological Site 

      Mojica, Alexis; Acosta, Leomar; Acosta, Leomar; Guérin, Roger; Ho, Carlos A.; Caballero, Orlando (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 ...

    • Heterogeneous photochemical reactions of decabromodiphenyl ether 

      Fábrega, José (11/03/2009)
      Brominated diphenyl ethers area major class of brominated flame retardants, with production of decabromodiphenyl ether (DBDPE) contributing significantly to this total. Although little is known about the mechanisms and ...

    • Household stored water quality in an intermittent water supply network in Panama 

      Gonzalez, Carlos I.; Erickson, John; Chavarría, Karina A.; Nelson, Kara L.; Goodridge, Amador (Journal of Water, Sanitation and Hygiene for Development washdev2020156Journal of Water, Sanitation and Hygiene for Development washdev2020156, 2020-04-08)
      Safe water storage is critical to preserve water quality, especially when intermittent piped drinking water supply creates a need for household storage. This study characterized household storage practices and stored water ...

    • Hydroclimate projections for Panama in the late 21st Century 

      Fábrega, José; Nakaegawa, Tosiyuki; Pinzón, Reinhardt; Nakayama, Keisuke; Arakawa, Osamu (2013-03-31)
      This work analyzes hydroclimate projections in Panama toward the end of the 21st century by employing the MRIAGCM3.1 model. Understanding the impact of climate change on water resources is fundamental for a number of economic ...

    • Increase In Simple Precipitation Intensity Index In Panama 

      NAKAYAMA, Keisuke; BEITIA, Carlos; VALLESTER, Erick; PINZON, Reinhardt; Fábrega, José; NAKAEGAWA, Toshiyuki; MARUYA, Yasuyuki; ESPINOSA, Jorge; OLMEDO, Berta; KATO, Junko; KOMAI, Katsuaki (2011-09-30)
      The paper describes trends in climate change indices in the Republic of Panama by using long-term meteorological data sets from the Panama Canal and MRI-AGCM. Simple precipitation intensity index from eleven climate change ...

    • Induced Desorption of DDT, DDD, and DDE from a Contaminated Sediment 

      Jafvert, Chad; Vogt, Beth; Fábrega, José (1997-03-01)
      Release profiles of p,p′-DDT, p,p′-DDD, and p,p′-DDE from sediment collected from Indian Creek, Alabama, were measured with a gas purge-induced desorption technique and compared to a model developed in this work. DDT entered ...

    • Influencia de la presión en roturas de tubería de redes de distribución 

      Saavedra, Casilda; Martínez Codina, Ángela; Cueto Felgueroso, Luis (2016-09-01)
      Uno de los síntomas del deterioro de las redes de distribución de agua son las frecuentes roturas de tubería. Las gestoras del agua tratan de evitarlas en la medida de lo posible debido a los elevados costos económicos, ...

    • Instrumentación sísmica en Panamá y proyecciones futuras 

      Méndez, Rosalín; Vargas, Ramiro (2017-11-17)
      Los orígenes de la instrumentación sísmica en Panamá se remontan a la época de la construcción del Canal de Panamá, siendo este país el primero del Hemisferio Occidental que contó con un sismógrafo, el cual fue instalado ...

    • Investigation of the Structural Fuse Concept 

      Vargas, Ramiro; Bruneau, Michel (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 ...

    • Microstructural And Mechanical Study of The Al-20Sn (MASS%) Alloy Processed By Equal-Channel Angular Pressing By Route C 

      Hernández, Cecilio; Figueroa, I. A.; Braham, C.; Novelo-Peralta, O.; Lara-Rodríguez, G. A.; González, G. (2013-05-25)
      In this work, the feasibility of an Al–20Sn (mass%) alloy to improve its mechanical properties through the Equal Channel Angular Pressing (ECAP) process is presented and discussed. Al–20Sn (mass%) alloy samples with a ...

    • Modeling Abiotic Processes of Aniline in Water-Saturated Soils 

      Fábrega, José; Jafvert, Chad; Li, Hui; Lee, Linda (03/18/2000)
      The long-term interactions of aromatic amines with soils are important in defining the fate and transport of these compounds in the environment. Abiotic loss of aniline from the aqueous phase to the soil phase occurs with ...

    • Modeling Competitive Cation Exchange of Aromatic Amines in Water-Saturated Soils 

      Fábrega, José; Jafvert, Chad; Li, Hui; Lee, Linda (06/01/2001)
      Competitive association to several components of soil through ion exchange processes influences the fate of organic cations in the environment. To examine these processes, the distributions of aniline and 1-aminonaphthalene ...

    • Modeling Short-Term Soil−Water Distribution of Aromatic Amines 

      Fábrega, José; Li, Hui; Jafvert, Chad; Lee, Linda (1998-12-08)
      The applicability of a distributed parameter model for describing the distribution of aniline and α-naphthylamine between soil and aqueous phases at short contact times was assessed. Mass action equations considered in the ...

    • Monitoring of Levels Moisture Soil Based on Electroresistive Methods: Case of the Gamboa Area, Panama Canal 

      Díaz, Irving; Mojica, Alexis; Ho, Carlos A. (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: ...

    • Prospección Geofísica Aplicada a la Arqueología – Importancia de los Procesos de Modelización y Simulación Numérica 

      Mojica, Alexis; Acosta, Leomar (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 ...

    • Recruiting a PRA Team That Works 

      Kohl, Jon; Candanedo, Indra (1997-01)
      In 1949 the world bank sent 14 international advisers to Colombia. These expert in foreign exchange, transportation, industry, agriculture, and others represented the first mission of its kind to attack "underdevelopment" ...

    • Restricción del Río Caimito para Uso Recreativo según el Índice de calidad de Agua 2004 

      Barranco Pilides, Nelson (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, ...

    • Role of pH in partitioning and cation exchange of aromatic amines on water-saturated soils 

      Li, Hui; Lee, Linda; Fábrega, José; Jafvert, Chad (08/04/2001)
      Predicting the reversible interactions between aromatic amines and soil is essential for assessing the mobility, bioavailability and exposure from contaminated sites. Reversible sorption mechanisms of aniline and α-naphthylamine ...