Browsing Theses & Dissertations by Title
Now showing items 2456-2475 of 3469
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Paecilomyces lilacinus (Thom) Samson y Trichoderma harzianum (Rifai) antagonistas del nematodo de quiste de la soya Heterodera glycines (Ichinohe) presentes en suelos de Puerto Rico
(2014)Soil samples were collected in four areas of Puerto Rico; three forest areas and one agricultural area cultivated with soybeans in order to isolate and identify antagonistic fungi to the soybean cyst nematode, Heterodera ... -
Paralelización de la operación correlación cruzada aplicado a marcas de agua en imágenes digitales
(2019-12-09)El uso de marcas de agua permite proteger elementos multimedia frente a manipulaciones ilegales que infrinjan derechos de autor. Marcas de agua construidas a partir de matrices con buenos valores de correlación y autocorrelación ... -
Parallel implementation of nonlinear dimensionality reduction methods using cuda in gpu
(2011)Manifold learning, is one of the methods for nonlinear dimensionality reduction, which affords a way to understand and visualize the structure of nonlinear hyperspectral datasets. These methods use graphs to represent the ... -
Parallelization of hyperspectral imaging classification and dimensionality reduction algorithms
(2004)Hyperspectral imaging provides the capability to identify and classify materials remotely. The applications of such technology is applied everywhere from medical devices and military targets to environmental sciences. With ... -
Parasitic eggs in ancient coprolites from archeological sites in Puerto Rico
(2012)Parasites have accompanied the human species since its origin and through their migrations around the world. Evidence of ancient parasitic diseases has been recovered from ancient human remains since 1910. The present work ... -
Parasitism in Pterois volitans (scorpaenidae) from coastal waters of Puerto Rico, Cayman Islands and Bahamas
(2013)Recently, Pterois volitans, one of the species known as lionfish, invaded the Atlantic Ocean. Individuals of P. volitans from Puerto Rico (N=188), Cayman Islands (N=91) and Bahamas (N=47) were examined for parasites. A ... -
Parámetros de fertilidad, calidad y potencial agrícola de los suelos de Vieques.
(2020-05-29)Soil fertility is the capacity of the soil to provide the necessary nutrients for plant growth. Soil quality is the ability of a specific soil to function within the limits of a natural ecosystem or treated to sustain the ... -
Parámetros del sueño en atletas universitarios
(2018)El sueño es un comportamiento básico y necesario pero diferente entre los seres humanos. Todavía no se ha esclarecido totalmente que lo guía y para que específicamente sirve en nuestro cuerpo. Afirmativamente organizaciones ... -
Parámetros sísmicos de registros de temblores medidos en Puerto Rico y su distribución geográfica
(2016)In the present study the geographical distribution of several seismic parameters calculated for three earthquakes recorded by the Puerto Rico Strong Motion Program (PRSMP) were analyzed. These seismic parameters have ... -
Partial purification of agarases from halophilic microorganisms isolated from marine and hypersaline environments in Puerto Rico
(2017)Las agarasas son enzimas que son capaces de catalizar la hidrólisis de agar. Se clasifican en dos grupos, que son α-agarasa y β-agarasa, de acuerdo con el patrón de escisión. Varias agarasas se han aislado de diferentes ... -
La participación estudiantil en la educación superior y sus aportaciones a la gobernanza universitaria: implicaciones para el liderazgo educativo
(2020-05-12)Esta investigación tuvo como propósito explorar y describir los procesos de participación estudiantil en la gobernanza universitaria de los miembros de las organizaciones estudiantiles, en una institución de educación ... -
Particle flow promoted by external forces in a confined space – feed frame case
(2014)Pharmaceutical tablets are the most sold and preferred drug solid dosage form due to its many advantages. The feed frame was designed to transfer the powder from the hopper to the tablet press dies as the die disk rotates. ... -
Particle swarm optimization applications in power system engineering
(2004)This thesis presents the application of the Particle Swarm Optimization technique to several power systems engineering problems. In particular, the Unit Commitment, Reactive Power Dispatch, State Estimation, and Power ... -
Passive acoustics as an indicator of red hind, Epinephelus guttatus, density at a spawning aggregation
(2012)Annual spawning aggregations of red hind, Epinephelus guttatus, form at predictable times and locations, and have historically succumbed to overfishing. Monitoring the status and restoration of aggregations is essential ... -
A passive wireless temperature sensor for harsh environment applications
(2007)High temperature sensors suitable for operating in harsh environments are needed in order to prevent disasters caused by structure or system functional failures due to elevated temperatures, for example, temperature ... -
Pathogenic bacteria detection by coupled water-soluble Cd- and Zn-based fluorescent nanocrystals
(2019-05-15)Semiconductors quantum dots are considered very promising candidates for bio-imaging, microorganism detection and diagnosis applications, among others, because of their tunable optical properties and good optical stability ... -
Pathogenic threats of ten endangered plant species of the karst region of Puerto Rico
(2015)Puerto Rico’s karst region has an important role in air, soil, and water quality, and is considered one of the most biologically diverse ecosystems of the island. Northern and Southern karst’s regions nurture unique plants ... -
Pathogenic, phenotypic and genetic characterization of Fusarium oxysporum f. sp. cubense isolates afeccting banana (Musa spp.) cultivars in Puerto Rico
(2016)Panama disease, or Fusarium wilt as it is also know, caused by Fusarium oxysporum f. sp. cubense (FOC) is one of the most destructive and widely disseminated diseases of banana (Musa spp.). The objectives of this study ...