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Mostrando ítems 21-40 de 44

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    • Nitrous Oxide Fluxes from a Commercial Beef Cattle Feedlot in Kansas 

      A. Aguilar, Orlando; Maghirang, Ronaldo; W. Rice, Charles (2014-03-10)
      Emission of greenhouse gases, including nitrous oxide (N2O), from open beef cattle feedlots is becoming an environmental concern; however, research measuring emission rates of N2O from open beef cattle feedlots has been ...
    • Experimental research on the effects of water application on greenhouse gas emissions from beef cattle feedlots 

      A. Aguilar, Orlando; Maghirang, Ronaldo; L. Trabue, Steven; E. Erickson, Larry (2014-04-30)
      The effect of water application (e.g., through rainfall or sprinkler system) on emissions of greenhouse gases (GHGs), such as nitrous oxide (N2O), methane (CH4), and carbon dioxide (CO2), from pen surfaces of open-lot beef ...
    • Project-based learning and use of the CDIO Syllabus for geology course assessment 

      Tejedor De León, Alexis (2014-07-06)
      This study provides an overview of the development of hard and soft skills from project-based curriculum planning, and suggests ways to evaluate them in the context of engineering education and their importance in the ...
    • Estilos digitales de estudiantes universitarios en C&T y aplicaciones didácticas de los SmartPhones en el salón de clases. 

      Tejedor De León, Alexis; Pinzón, Cristian; Peralta, José (2014-07-24)
      La actividad universitaria incluye la difusión y la adquisición de datos e informaciones, diseminada en múltiples bases de datos y en las más variadas posibilidades de acceso, gracias a la Internet. La inmersión de los ...
    • Behavioral and Physical Factors Influencing Energy Building Performances in Mediterranean Climate 

      Mora, Dafni; Carpino, Cristina; Simone, MarilenaDe (2015-11-01)
      The residential sector is used to test the relative roles of socioeconomic and behavioral variables of occupants as compared with the climate and physical building characteristics. The study is carried out considering a ...
    • Characterization of Biochar from Rice Hulls and Wood Chips Produced in a Top-Lit Updraft Biomass Gasifier 

      James Rivas, Arthur; Yuan, Wenqiao; Boyette, Michael D.; Wang, Donghai; Kumar, Ajay (2016-01-01)
      The objective of this study was to characterize biochar produced from rice hulls and wood chips in a top-lit updraft gasifier. Biochar from four airflows (8, 12, 16, or 20 L min-1) and two insulation conditions (not insulated ...
    • The Effect of Biomass Physical Properties on Top-Lit Updraft Gasification of Woodchips 

      James Rivas, Arthur; Yuan, Wenqiao; Boyette 2, Michael D. (2016-04-12)
      The performance of a top-lit updraft gasifier affected by biomass (pine wood) particle size, moisture content and compactness was studied in terms of the biochar yield, biomass burning rate, syngas composition and tar ...
    • Introduction to the Application of Phase Change Materials under Tropical Climate of Panama 

      Harris, Itamar; Ortega Del Rosario, Maria De Los Á.; James Rivas, Arthur; Bruneau, Denis (2019 7th International Engineering, Sciences and Technology Conference (IESTEC)2019 7th International Engineering, Sciences and Technology Conference (IESTEC), 2016-10-09)
      Phase change materials (PCM) are materials with the ability to store a large amount of energy (latent heat) during their change from solid to a liquid phase. This takes place at a certain melting temperature. Amid the ...
    • Airflow and insulation effects on simultaneous syngas and biochar production in a top-lit updraft biomass gasifier 

      James Rivas, Arthur; Yuan, Wenqiao; Wang, Donghai; Boyette, Michael D. (2017-10-11)
      The objective of this study was to understand the effect of airflow and insulation on syngas and biochar generations of rice hulls and woodchips in a top-lit updraft gasifier. Biochar yield decreased with increasing airflow. ...
    • Application of survey on energy consumption and occupancy in residential buildings. An experience in Southern Italy 

      Carpino, Cristina; Fajilla, Gianmarco; Gaudio, Angela; Mora, Dafni; DeSimone, Marilena (2018-08-01)
      The aim of the study was to create and administer a questionnaire to collect data and obtain typical occupancy profiles of residential buildings. The survey was developed by considering previous experiences conducted in ...
    • Computational Fluid Dynamics Simulation of Coal Gasification in a Circulating Fluidized Bed Reactor 

      Escala, Manuel; James Rivas, Arthur (2019-10-09)
      One of the applications of coal as a fuel is the production of gas through circulating fluidized bed technology. The modeling of these systems allows verifying and optimizing the design and operation parameters of gasifiers ...
    • Water Quality Evaluation of the Cabra River Using Biological Indicators 

      Ortega Baso, Nimia I; Cedeño, Eliezer; Espino, Kleveer; James Rivas, Arthur; Ulises Jiménez, José (2019 7th International Engineering, Sciences and Technology Conference (IESTEC)2019 7th International Engineering, Sciences and Technology Conference (IESTEC), 2019-10-09)
      The objective of this study was to evaluate the water quality of the Cabra River through the use of aquatic macroinvertebrates implementing the EPT and BMWP/Pan indexes. The diversity of orders and families of macroinvertebrates ...
    • Development of a Prototype for Solar Radiation Exploitation on Galvanized Metal Roofs in Panama 

      Labastid C., Dayberto; Bolobosky, Marco; James Rivas, Arthur; Mogollón, Luis (2019 7th International Engineering, Sciences and Technology Conference (IESTEC)2019 7th International Engineering, Sciences and Technology Conference (IESTEC), 2019-10-09)
      The solar energy is an inexhaustible resource available in many areas of our planet. The objective of this investigation is to develop a prototype that takes advantage of the incident solar energy on metal roofs of the ...
    • Biomass carbonization - Production and characterization of biochar from rice husks 

      Bethancourt, Geomara; James Rivas, Arthur; Villarreal, José E.; Marín-Calvo, Nacarí (2019 7th International Engineering, Sciences and Technology Conference (IESTEC)2019 7th International Engineering, Sciences and Technology Conference (IESTEC), 2019-12-30)
      El presente trabajo consistió en producir y caracterizar carbón vegetal a partir de la cascarilla de arroz. La cascarilla de arroz fue generada en un reactor de flujo ascendente tipo Top-lit. Este proceso fue favorable ...
    • OTEC Alternative for the Electric Power Generation in Panama 

      López Tenorio, Guillermo; James Rivas, Arthur; De Los Angeles Ortega, Maria; Jurado, Francisco (2019 7th International Engineering, Sciences and Technology Conference (IESTEC)2019 7th International Engineering, Sciences and Technology Conference (IESTEC), 2019-12-30)
      This document presents a qualitative analysis of surface temperatures of the oceanic territory of Panama. These temperatures represent an indication of the potential of the thermal resource in the oceanic territory of ...
    • The Effect of Gasification Conditions on the Surface Properties of Biochar Produced in a Top-Lit Updraft Gasifier 

      James Rivas, Arthur; Yuan, Wenqiao; Wang, Duo; Wang, Donghai; Kumar, Ajay (2020-01-19)
      The effect of airflow rate, biomass moisture content, particle size, and compactness on the surface properties of biochar produced in a top-lit updraft gasifier was investigated. Pine woodchips were studied as the feedstock. ...
    • Inspection of Biomimicry Approaches as an Alternative to Address Climate-Related Energy Building Challenges: A Framework for Application in Panama 

      Chen Austin, Miguel; Garzola, Dagmar; Delgado, Nicole; Jiménez, José Ulises; Mora, Dafni (2020-06-01)
      In the Panama context, energy consumption in the building sector is mostly related to the conditioning of indoor spaces for cooling and lighting. Different nature strategies can be mimic to strongly impact these two aspects ...
    • nventario del consumo de energía para evaluar alternativas de ahorro energético en el edificio 2 del Campus Víctor Levi Sasso de la Universidad Tecnológica de Panamá 

      Henríquez, Felix; Carrizo, Keivan; Mogollón, Luis; Berbey-Alvarez, Aranzazu (Universidad de Valladolid, 2021)
      El Edificio 2 se encuentra ubicado en el Campus Víctor Levi Sasso de la Universidad Tecnológica de Panamá y tiene una superficie construida de 2,361 m2aproximadamente. A partir del inventario realizado, se estima ...
    • Impacto economico de la crisis COVID-19 sobre la MIPYME en Panamá 

      Quintero de Sanfilippo, Edilsa; Martez, Nuvia; González, Enith; Bernal, Bolívar; Vergara, Gabriel; Piper, Rosemary; Tam, Ninotshka; Durán, Roger (2021-01-01)
      La Pandemia provocada por el Covid-19 ha impactado a la economía de nuestro país de una manera muy contundente. Las cifras revelan un impacto negativo de 17.9% en el PIB 2020 de forma general y en particular para las Micro, ...
    • A Critical Review onMathematical Descriptions to Study Flux Processes and Environmental-Related Interactions ofMangroves 

      Brooks, Jefferson; Chen Austin, Miguel; Mora, Dafni; Tejedor-Flores, Nathalia (MDPI, 2021-06-21)
      Trees are resources that provide multiple benefits, such as the conservation of fauna, both terrestrial and marine, a source of food and raw material, and offering protection in storms, which makes it practical to understand ...

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      • facebook.com/UTPrepositorio
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