Browsing Theses & Dissertations by Title
Now showing items 2788-2807 of 4100
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Novel assembly of homozygous genomes indicates ancient divergence times and suggests new conservation strategies for the critically endangered Solenodon paradoxus
(2017)Solenodons are ancient insectivores living on the Caribbean islands Hispaniola and Cuba, with no other surviving relatives found elsewhere. The genus is estimated to have diverged from the rest of the mammalian order circa ... -
Novel bio-inspired structures and sample translation approaches for the Raman detection of pharmaceutical agents in water
(2016-06)Over the years the widespread use of pharmaceuticals and personal care products (PPCPs) has become an emerging environmental problem affecting agriculture, ecological systems, and water quality as well. Surface Enhanced ... -
A novel fft pruning algorithm: improving efficiency for a nc-ofdm cognitive radio
(2012)Cognitive Radio (CR) is a promising candidate to deploy future wireless networks because CR can enable an efficient use of the resources involved in wireless communications networks, specifically the Electromagnetic (EM) ... -
A novel framework of structured measurement matrix for compressed sensing in wireless sensor networks
(2018-05)Wireless Sensor Network (WSN) is a wireless networking technology that can facilitate many important applications in our real life, from environmental monitoring to smart grid, and thus is a key component in the emerging ... -
Novel hydrazone compounds with broad-spectrum antiplasmodial activity and synergistic interactions with antimalarial drugs
(2023-12-12)Malaria is a devastating disease that kills millions of people each year, and the emergence of multidrug-resistant <em>Plasmodium</em> parasites poses a major challenge to global malaria control efforts. This dissertation ... -
Novel separation methods for removing nanoparticles and copper from chemical mechanical planarization wastes
(2007)Chemical mechanical planarization (CMP) wastewater emanating from semiconductor processing contains copper (II) ions and either alumina and/or silica nanoparticles. The efficiency of biotreatment schemes to remove copper ... -
Novel sulfonated ether based block copolymer ionomers as proton exchange membranes for fuel cells applications
(2017)This investigation studied the morphology, hydration, and transport properties of different membranes for direct methanol fuel cell (DMFC) applications. First, sulfonated poly(ether ether ketone) (SPEEK) membranes were ... -
Novel surface-enhanced Raman scattering probes for water safety applications
(2019-05-14)Fresh produce safety is of great concern in the food industry, since its raw consumption and minimal processing in comparison to other food commodities, exacerbates the risks to become one of the leading sources of foodborne ... -
Novel synthesis and characterization of metal nanometric wires and anodic alumina membrane-palladium wire ensembles using solid state reduction for hydrogen sensing applications
(2012)In the last decade nanowires (NWs) have become the focus of intensive research in the areas of catalysis, sensors, gas storage, among others. These ordered high surface area materials display high chemical reactivity because ... -
Novel synthesis and characterization of supported bimetallic films for hydrogen detection
(2014)Continuous increase in energy demand and high levels of pollution generated by the existing energy sources have led researchers to explore other clean and renewable alternatives. Hydrogen gas (H2) is an option that has ... -
Novel titanium silicate porous materials: Synthesis using large structure directing agents, functionalization and evaluation for carbon dioxide adsorption-based applications
(2015-12)UPRM-5 is a flexible titanium silicate and nano-porous adsorbent modified for the selective removal of CO2 from light gas mixtures. In this work, UPRM-5 was prepared using TPA and TBA cations as structure directing agents ... -
Nucleation and growth of silver sulfide nanoparticles
(2010)The synthesis of metal and semiconductor nanoparticles has received widespread attention by the scientific community due to the large number of technological applications they find in nanoscaled systems. The mechanism of ... -
Nuestras tías de Avallon.
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Nuevas estrategias para pronosticar la trayectoria e intensidad de los huracanes en el océano atlántico
(2007)Durante muchos años, los científicos, matemáticos e ingenieros han estudiado sobre la formación de los huracanes. Dos aspectos muy importantes que los investigadores han tomado en consideración dentro del área de huracanes ... -
Nuevos aportes de la bioarqueología en el contexto arqueológico precolombino del Caribe y Puerto Rico : traducción de dos artículos del Dr. Edwin F. Crespo Torres y otros autores
(2021-05-13)La historia es un tema muy desatendido, sin quitarle mérito a nuestros historiadores, en nuestro contexto cultural puertorriqueño, a tal punto que la mayoría desconoce quiénes eran nuestros ancestros. Debo de aclarar que ... -
Nuevos aspectos en el estudio de la partícula D en el experimento FOCUS de Fermilab
(2006)The purpose of this work is to improve the reconstruction techniques of the decays of the particles that contain charm in the quark composition using the information of the Target Silicon Detector of the experiment E831 ... -
Numerical analysis of Berdut linear electric motor for train propulsion
(2009)This thesis investigates the performance of the Berdut linear motor for use in the propulsion of trains. This motor is part of a novel technology that uses an array of permanent magnets and iron-based materials in the ... -
A numerical and experimental comparative study on the performance of organic and metallic phase change materials under high power millisecond pulses
(2017-05)Phase changes materials (PCMs) have been studied as passive cooling alternative for different conditions. Due to the US Army need for the development of a passive cooling system alternative for pulsed power applications, ... -
Numerical approach to cold gas spray on ceramic substrates for power electronics packaging
(2018-11-29)Power electronics packaging plays a key role in the translation from robust mechanical systems, to more efficient electronic systems. One of the current power modules chal- lenges is the direct bond copper process used to ...