Recent Submissions

  • Composition, Diversity, and Tree Structure of a Tropical Moist Forest in Gamboa, Colon, Panama 

    Jiménez, José; Fábrega Duque, José; Mora, Dafni; Tejedor, Nathalia; Sánchez, Marilyn (2016-03-22)
    This study focuses on the floristic diversity of the forest trees found at Cerro Pelado Tropical Hydrology Observatory in Gamboa, Colon, Panama. Field work for the quantitative inventory was carried out in November 2012. ...
  • Scintillometer networks for calibration and validation of energy balance and soil moisture remote sensing algorithms 

    Hendrickx, Jan; Kleissl, Jan; Gómez Vélez, Jesús; Hong, Sung-ho; Fábrega Duque, José; Vega, David; Moreno Ramírez, Hernán; Ogden, Fred (2007-05-07)
    Accurate estimation of sensible and latent heat fluxes as well as soil moisture from remotely sensed satellite images poses a great challenge. Yet, it is critical to face this challenge since the estimation of spatial and ...
  • Induced Desorption of DDT, DDD, and DDE from a Contaminated Sediment 

    Jafvert, Chad; Vogt, Beth; Fábrega Duque, 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 ...
  • Role of pH in partitioning and cation exchange of aromatic amines on water-saturated soils 

    Li, Hui; Lee, Linda; Fábrega Duque, José; Jafvert, Chad (2001-08-04)
    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 ...
  • Study of Seasonal Rainfall Infiltration Via Time-Lapse Surface Electrical Resistivity Tomography: Case Study of Gamboa Area, Panama Canal Watershed 

    Mojica, Alexis; Díaz, Irving; Ho, Carlos; Ogden, Fred; Pinzón, Reinhardt; Fábrega Duque, José; Vega, David; Hendrickx, Jan (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 ...
  • Estimates of Biomass and Fixed Carbon at a Rainforest in Panama 

    Pinzón, Reinhardt; Fábrega Duque, José; Vega, David; Vallester, Erick; Aizprúa, Rafael; López-Serrano, Francisco; Ogden, Fred; Espino, Kleveer (2012-10-03)
    This paper presents an estimation of the quantity of carbon fixed in trees in a one hectare (ha) plot at the Cerro Pelado-Gamboa Hydrology Tropical Observatory, which is located in the province of Colon, Panama. The ...
  • Increase In Simple Precipitation Intensity Index In Panama 

    NAKAYAMA, Keisuke; BEITIA, Carlos; VALLESTER, Erick; PINZON, Reinhardt; Fábrega Duque, Jose; 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 ...
  • Hydroclimate projections for Panama in the late 21st Century 

    Fábrega Duque, 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 ...
  • Modeling Abiotic Processes of Aniline in Water-Saturated Soils 

    Fábrega Duque, José; Jafvert, Chad; Li, Hui; Lee, Linda (2000-03-18)
    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 Duque, José; Jafvert, Chad; Li, Hui; Lee, Linda (2001-06-01)
    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 Duque, José; Li, Hui; Jafvert, Chad; Lee, Linda (1998-08-12)
    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 ...
  • Heterogeneous photochemical reactions of decabromodiphenyl ether 

    Fábrega Duque, José (2009-11-03)
    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 ...