Browsing Theses & Dissertations by Title
Now showing items 502-521 of 4072
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Characterization of protein expression profile during development of the Puerto Rican monarch butterfly Danaus plexippus megalippe f. portoricensis A. Clark, 1941 (Lepidoptera: Danainae)
(2015)Danaus plexippus megalippe, a non-migratory sub-species of the monarch butterfly, is a resident species in Puerto Rico. Molecular studies in monarch butterflies are fairly scarce and a protein profile has never been ... -
Characterization of proton exchange membrane fuel cell and PEM electrolyzer using non-steady electrochemical techniques.
(2004)Proton Exchange Membrane Fuel Cells (PEMFCs) and PEM Electrolyzer were characterized using Electrochemical Impedance Spectroscopy (EIS). Faradaic resistance (RΩ), kinetic and mass transfer parameters such as charge ... -
Characterization of sensors for CMS Phase II forward pixel detector
(2018)The HL-LHC conditions of instantaneous peak luminosities up to 7.5*10^34 cm ^-2 s^-1 and an integrated luminosity of the order of 300fb^-1 would result in 1 MeV neutron equivalent fluence of 2.3 * 10^16 neq/cm^2and a total ... -
Characterization of solid dispersions of hydroxypropyl cellulose films with griseofulvin via hot-melt extrusion
(2012)Hot-melt extrusion has gained significance in the pharmaceutical industry to formulate solid dispersions. In a solid dispersion, poorly-water soluble drugs can be dispersed in an inert hydrophilic polymer matrix, improving ... -
Characterization of squeeze-cast AIB12/AI and AIB2/AI composites
(2009)Aluminum alloys containing 2 and 4 wt.% copper reinforced with aluminum borides were successfully fabricated by squeeze casting employing squeezing pressures up to 62 MPa. The distribution of reinforcements in the composites ... -
Characterization of the dynamic onset of fibric damage in type I collagen fascicles
(2009)The mechanical properties of collagen in the form of Type I fascicles obtained from rat tail tendons were determined under dynamic loading conditions. Experimental procedures and apparatus were developed to establish a ... -
Characterization of the seismic response of RC frames at different performance levels established in the ASCE 41-06 seismic rehabilitation code
(2013)Performance-based earthquake engineering is focused in the definition of limits states to represent different levels of damage, which can be described by material strains, drifts, displacements or even changes in dissipating ... -
Characterization of the texture, composition and porosity of the Aymamón Limestone formation and laboratory derivation of elastic properties and seismic wave velocities
(2008)The study area of this project lies in the central portion of northern coastal plain of Puerto Rico, which is characterized by mogote karst terrains that form on the Tertiary Aymamón Limestone Formation. Lowlands between ... -
The characterization of the TLT-1 soluble fragment and the evaluation of TLT-1 as a biomarker for cardiovascular diseases and acute respiratory distress syndrome
(2022-08-23)Platelets are anucleate cells produced in the bone marrow that are responsible for coagulation. Various platelets agonists activate platelets including thrombin generated from the clotting cascade, collagen from the ... -
Characterizing the effects of estrogen and G15 on triple-negative Inflammatory Breast Cancer
(2023-05-15)Inflammatory breast cancer (IBC) remains the most aggressive and lethal form of breast cancer—reporting rapid progression, poor prognosis, and a unique clinical diagnosis. IBC is frequently classified as a hormone ... -
Characterizing the temporal and spatial distribution of earthquake swarms in the Puerto Rico - Virgin Island block
(2018-05)The presence of earthquake swarms and clusters in the north and northeast of the island of Puerto Rico in the northeastern Caribbean have been recorded by the Puerto Rico Seismic Network (PRSN) since it started operations ... -
Characterizing zooplankton and micronekton diel vertical migration at the western Puerto Rican shelf/slope break
(2006)Discrete zooplankton/micronekton samples from three plankton cruises were collected over a moored Bluewater Broadband ADCP in Mona Passage, west of Puerto Rico to: describe the taxonomic composition, vertical distribution, ... -
Characterzation of a Puerto Rican cohort of Essential Thrombocytemia patients and the use of this disease as the theoretical context of high school students' short scientific investigation
(2019-12-02)Essential Thrombocytemia (ET) is part of the spectrum of myeloproliferative disorders that affect the myeloid progenitor cells. This neoplasm is characterized by a cytokine overproduction, persistent thrombocytosis, ... -
Charting the route: From gothic to magic realism
(2003)Gothic fiction is one of the most interesting and influential forms of literature. Its scope has reached many genres, periods and epochs, and it has engendered numerous offspring since its origin. One of its most famous ... -
ChatGPT: desafío latente para el diseñador gráfico
(2023-12-13)Esta investigación consiste en el desarrollo de un proyecto audiovisual desde el género documental sobre las implicaciones en la mediación y el contenido gráfico-visual frente al lanzamiento de ChatGPT, en noviembre de ... -
Chemically modified polymeric substrates for aqueous molecular separations: applications to water treatment
(2020-05-05)Even though we live in a planet which has a surface composition of 70% water, less than 1% is in the form of freshwater. Changes in society, population growth, and industrialization have significantly increased the water ... -
China’s Evolving Role in Asian Trade: A Network Approach
(2020-12-04)En este trabajo, el análisis de redes se utiliza para examinar el papel cambiante que ha desempeñado China en la Red de Comercio Mundial en los años 1995, 2005 y 2014. Se construye una red a partir de una Matriz de ... -
Chisme y sujetos queers en la narrativa puertorriqueña de los siglos XX y XXI.
(2020-05)In Gossip and Queer bodies in Puerto Rican XX and XXI Narratives I explore how gossip impacts queer representations in literatures. I evaluate canonical and non-canonical authors that represent subjects with gender identities ... -
Chitosan-based nanoparticles for controlled release of Bromacil
(2018-12)Herbicides are the most widely used method for weed control. However, the agricultural industry worldwide is facing several challenges including the environmental pollution problems (soils and water) caused by the unsuitable ... -
Christopher Marlowe’s Faustian codes in Eighteenth-century Gothic literature
(2019-05-14)This thesis explores Renaissance Faustian codes seen in the eighteenth-century Gothic novel using selected works of three writers of the Gothic Revival. I argue that by looking at William Beckford’s Vathek, Matthew G. ...