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Estudio de las órdenes de cambio en proyectos de diseño-construcción en las escuelas del siglo XXI
(2015)
Change orders have a strong potential to become difficult, because of its significant increase in cost and contract duration extension. This research identifies and evaluates the causes of change orders in design build ...
Industrial ecology approach to management of fly ash from fluidized bed combustion: production of slow-release fertilizer and soil conditioner
(2006)
Coal has been a major energy source since the Industrial Revolution. Despite its environmental problems, coal consumption is still growing because of the lack of alternatives such as natural gas and petroleum resources. ...
Modeling the land-use legacy effect of agricultural practices on the water quality of streams from forest watersheds of Puerto Rico
(2018-05)
In order to aid in the establishment of “reference” criteria the nutrient status and dynamics of
soils, water and stream sediments of a secondary forested watershed is being compared with the dynamics
of an “historically” ...
Water quality assessment with aquatic non-structural blocks made of coal ash aggregates mortars
(2012)
A handful of biochemical processes occur in aquatic environments. One of the problems that are mostly encountered in such environments is caused by excess nutrient input and subsequent algal bloom. A series of studies were ...
Instrumentación de la represa Guajataca para el monitoreo sísmico y de deslizamientos
(2013-12)
This report presents the seismic and landslide monitoring system installation process used in the Guajataca earth dam which is located at the boundary of the municipalities of San Sebastian, Quebradillas and Camuy, Puerto ...
Bus stop consolidation analysis for Puerto Rico's Metropolitan Bus Authority
(2015)
The transit planning in the Metropolitan Area of San Juan in Puerto Rico has a challenging problem because of its low sponsorship. Several reasons for the lack of sponsorship discussed among the community are urban sprawl, ...
Clasificación de suelos según el NEHRP para el municipio de Arecibo
(2009-05)
Este proyecto es parte de un proyecto de investigación realizada para la oficina del Comisionado de Seguros de Puerto Rico. El proyecto consiste en la generación de mapas de tipos de suelo para el municipio de Arecibo. Las ...
Tomografía preliminar de Puerto Rico
(2013)
Seismic Tomography has been used by researchers to obtain information about the internal structure of the Earth at different depths. This method is applied to identify and visualize the seismic wave velocity propagation ...
Water hammer analysis of Villalba-Coamo potable water transmission line
(2009)
The hydraulic behavior of a new potable water transmission line that flows from Villalba to Coamo was analyzed using computer modeling. The modeling considered steady-state and transient simulations. All the input data in ...
Determinación de períodos fundamentales del suelo mediante vibración ambiental en las comunidades de Jardines del Caribe y La Playa, Puerto Rico
(2020-05-28)
Due to the seismic risk of Puerto Rico, this project was conducted to estimate the fundamental periods of vibration of the soil deposits in the areas of Jardines del Caribe and La Playa, respectively communities of Mayagüez ...