Browsing Theses & Dissertations by Title
Now showing items 1469-1488 of 3514
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Expected flood damage to buildings in riverine and coastal zones
(2007)The methodologies used to estimate flood damage to buildings are typically based on aftermath surveys and statistical analyses of insurance claims data that do not consider the direct effects of floodwater hydrodynamics. ... -
Experiencia del profesorado en la transición de cursos presenciales a cursos a distancia (en línea)
(2020-05-05)Esta investigación cualitativa con enfoque fenomenológico pretendió auscultar la experiencia del profesorado de la UPR-RP en la transición de cursos presenciales a cursos a distancia. Este estudio recopiló las experiencias ... -
Experiencia subjetiva del uso de pornografía en hombres universitarios puertorriqueños
(2021-04-27)Desde la psicología el fenómeno del uso de pornografía se ha estudiado metodológicamente desde una óptica causalista y principalmente se ha enfocado en los efectos negativos que genera en las personas, ya sea conceptualizada ... -
Experiencias de desafiliación religiosa de jóvenes adultos puertorriqueños
(2021-05-19)Las investigaciones apuntan a que la desafiliación religiosa es una experiencia compleja con componentes psicológicos y sociales. Sin embargo, este es un tema que ha sido relegado en la psicología pues no se han realizado ... -
Experiencias de un grupo de jóvenes “millennials” con grado de bachillerato que se encuentran desempleados/as o subempleados/as: implicaciones para la consejería profesional
(2020-05-12)La investigación realizada, expone las experiencias de un grupo de jóvenes de la generación millennial, que había completado su grado de bachillerato y se encontraban desempleados/as o subempleados/as. El propósito de la ... -
Experiencias de vida: voces de las mujeres tras recibir un diagnóstico de VIH durante el embarazo
(2020-12-16)Cerca de la mitad de los diagnósticos de VIH en el mundo son mujeres, siendo el Caribe la segunda región donde más mujeres se diagnostican con esta condición. Las mujeres que han sido diagnosticadas con VIH durante el ... -
Experiencias y narrativas de personas con un diagnóstico de Alzheimer
(2020-09)El propósito de esta investigación fue explorar las narrativas de personas con un diagnóstico de Alzheimer leve en Puerto Rico sobre sus experiencias personales con la condición y las implicaciones que tiene en cómo se ... -
Experimental and Ab initio studies of intramolecular Ph/Cl exchange on Wilkinson’s catalyst and ligand-centered electrochemistry of ligand substituted metal carbonyls (M = Cr, Mo, W, Ir)
(2012)Cyclic voltammetry measurements on (η2 -C60)M(CO)5 complexes (M = Cr, Mo, W) and on (C5H10N)3(H)3C60 in dichloromethane showed three C60-centered and reversible reduction/oxidation waves. The E1/2 values of these waves are ... -
Experimental and Dft Studies of the mechanism of cetone-peroxide formation reaction using Raman and nuclear magnetic resonance spectroscopies
(2009)A mechanism for the reaction between acetone and hydrogen peroxide leading to the formation of the important homemade explosive Acetone Peroxide is postulated. The proposed mechanistic scheme is based on Raman and Nuclear ... -
Experimental and numerical evaluation of wavelet based damage detection methodologies for civil infraestructure
(2013)Reduced scale models of a single span bridge, a 12 bay truss bridge, and a numerical model of a multi-story shear building were used to evaluate the capability of Wavelet Transforms for damage detection and system ... -
Experimental and numerical model to determine the feasibility of using acoustic pulses to detect catheter occlusions
(2011)The purpose of this research is to determine the capability of detecting central venous catheters occlusions by using guided acoustic waves in a fluid filled tube. The pulse sent through the fluid will be reflected if the ... -
Experimental and numerical study of the continuous fluidized bed dryer
(2016)Nowadays, batch fluid-bed drying is one of the most efficient drying methods for particulate material; but at the same time, it is the most energy consuming operation in the manufacturing of solid dosage forms. To minimize ... -
Experimental and theoretical study of solubility of 1, 3, 5-trinitrohexahydro-S-triazine (Rdx) In alcohols
(2010)The solubility of 1,3,5-trinitrohexahydro-s-triazine (RDX) in different alcohols were measured by HPLC, DSC, GC/MS, and NMR. The conformation of RDX in acetone-D6 solution was verified by vibrational studies using Raman ... -
Experimental benchmarks for mechanical properties of highly-loaded carbon nanotube- reinforced polyether ether ketone
(2018)Composites of carbon nanotubes (CNTs) and polymers have been proposed for several engineering applications, this due to the elevated mechanical, thermal and electrical properties of the nanotubes. However, effective ... -
Experimental cyclic behavior of reinforced concrete wall houses loaded in their weak direction
(2007)This research presents a study of the lateral capacity of the reinforced concrete houses constructed in Puerto Rico. These houses are built with a reinforced concrete roof slab and three reinforced concrete walls oriented ... -
Experimental evaluation of direct and indirect effects of Diadema antillarum on benthic community assemblages and coral recruitment in La Parguera, Puerto Rico
(2020-05-27)Once described as a noxious species, the long-spined sea urchin Diadema antillarum is now considered an ecologically important species for coral reef health and many efforts have been focused towards their recovery after ... -
Experimental evaluation of the modulus of elasticity of self-consolidating concrete
(2008)Self-consolidating concrete represents one of the most important advances for the concrete industry. Due to the rapid growth of the use of this new concrete technology, it is evident that research focused on its mechanical ... -
Experimental hydration of amorphous silicate smokes: Simulating aqueous alteration of fine-grained materials in CM chondritic meteorites
(2017)Amorphous non-stoichiometric silicate materials (e.g. “smokes”) of different compositions (e.g. SiOx, Mg-SiOx, Fe-SiOx, and Mg-Fe-SiOx) synthesized at NASA’s Goddard Space Flight Center are used as analogs for the amorphous ... -
An experimental study of aluminum boride particles distribution in centrifugally cast AI/AIBx composites
(2009)In this research, centrifugal casting has been used to investigate the influence of casting parameters and chemical composition on the manufacturing of functionally graded Al-2 wt. %B-6 wt. %Mg and Al-2 wt. %B-6 wt. %Cu ... -
An experimental study of bubble parameters in subcooled flow boiling in vertical channel to validate different heat flux partitioning models
(2019-05-10)Pressurized water reactors (PWR) are safely operating below maximum heat flux conditions because actual heat flux partitioning models fail to predict it accurately. Improving the heat flux models will lead to more efficient ...