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Now showing items 21-30 of 157
Disinfection by-products occurrence and Escherichia Coliform removal in a point-of-entry cistern purification unit
(2012)
This research aims to develop and test a Point-of-Entry Cistern Purification Unit (POE-CPU) to guarantee water quality for household purposes, with an emphasis on turbidity, E. coli removal and minimal occurrence of ...
Análisis estratégico de la Ley de Incentivos Industriales para el desarrollo económico de Puerto Rico
(2012)
This investigation evaluates the changes between Act No. 73 of May 28, 2008, known as, "Economic Incentives for the Development of Puerto Rico and to amend Sections 1022 and 1023 of the Internal Revenue Code of 1994" and ...
Restoration practices for subtropical dry forest in Puerto Rico: ecological and economic aspects for native trees species
(2012)
Subtropical dry forests that are degraded by human activities may take centuries to recover. Reforestation projects can be an important instrument for the regeneration of dry forests. However, the costs and labor requirements ...
Template assisted manufacturing of low-temperature copper-based nano solder
(2012)
As a response to new legislation and calls to lead-free technologies, a method is proposed to manufacture nano-copper by means of electroless copper plating on nanofibers templates. Polyacrylonitrile (PAN) nanofibers were ...
Evaluación de vermicomposta de café como medio alterno en la producción de pimiento tipo Cubanelle (Capsicum annuum L.)
(2012)
A chemical and physical characterization of vermicompost from coffee pulp was conducted to determine nutriments content and its potential use as a substrate for germination when mixed with Pro-Mix ® and as growth substrate ...
Effects of food concentration in the competition between larvae of the introduced cane toad (Rhinella marina) and the native white-lipped frog (Leptodactylus albilabris)
(2012)
Invasive species are a major focus within conservation biology. The widely introduced cane toad, Rhinella marina, has gained particular interest in studies of effects of invasive species on native communities. In this study ...
Immigration and language threat in a local newspaper: A case study of Hazleton, Pennsylvania
(2012)
This research is a case study of immigration issues in Hazleton, Pennsylvania from 2005 – 2006 in the lead-up to the passage of the Illegal Immigration Relief Act by the city. Using reporting data from the local newspaper, ...
Regionalized flood frequency analysis for basins in Puerto Rico
(2012)
The main goal of this research is to provide a flood regionalization study for Puerto Rico based on recent advances in watershed classification and parameter estimation techniques. The regional flood frequency was achieved ...
Detección y caracterización de bacterias endofíticas en árboles de cafeto (Coffea arabica L.) y de sombra en Puerto Rico
(2012)
Among bacterial diseases affecting coffee (Coffea arabica L.), coffee leaf scorch (CLS) caused by the bacterium Xylella fastidiosa (Xf) Wells et al., limits production in many countries. The importance of endophytic bacteria ...
Productivity analysis of foreign direct investment and capital formation on developed and developing countries
(2012)
Este estudio examina el efecto de la inversión extranjera directa y la formación de capital en la productividad total de los factores del país utilizando el modelo de regresión de mínimos cuadrados ordinarios y análisis ...