• Fabricación y caracterización de películas delgadas de V3O5 

  Ramos Aponte, Leonardo (2022-12-14)

  V3O5 thin films were deposited on SiO2 substrates with similar deposition conditions by dc magnetron sputtering. Electrical properties of the thin films show differences in the resistivity values as a function of temperature ...

• Assessment of the impact of agricultural extension training on COVID-19 in the meat supply chain in Puerto Rico 

  Rodriguez Bordoy, Gabriel (2022-12-08)

  The COVID 19 pandemic has caused many effects in different sectors around the world. Supply chains is one of the areas that is facing many difficulties due to confinement, deaths from COVID-19 and lack of raw materials. ...

• Deep multisource fusion for satellite imagery 

  Theran-Suarez, Carlos (2022-12-13)

  Data fusion techniques are still gaining relevant interest in the remote sensing field, opening the opportunity to explore a new alternative to fuse imagery data (Multispectral, Hyperspectral, and LIDAR), enhancing their ...

• Transient stability analysis of power systems with high penetration of renewable energy 

  Osorio-García, David (2022-11-07)

  The fight against climate change and the supply of growing energy demands have lead to the evolution of electrical systems, including more renewable energy generation. Consequently, conventional energy is gradually ...

• Termografía infrarroja y termómetro timpánico como métodos no invasivos para determinar la temperatura corporal en ovinos criados bajo condiciones de estrés por calor 

  Veloudis Padilla, Lauren N. (2022-12-16)

  Heat stress (HS) limits productivity in geographic areas with a humidity-temperature index (HTI) greater than 72. This effect of HS in sheep is commonly determined by an increase in body temperature (BT). Currently, rectal ...

• Classification of coastal lowland acid sulfate soils using digital soil mapping techniques for Puerto Rico and U.S. Virgin Islands 

  Cabezudo Vázquez, Onix H. (2022-12-13)

  Oxidation of soil pyrite due to hydrologic disturbances is responsible for severe soil acidification and the production of noxious greenhouse gases. Coastal lowland acid sulfate soils (CLASS) are an environmental hazard ...

• Impacts of floating Sargassum accumulation on the fringing mangrove Rhizophora mangle in southwestern Puerto Rico: A case study 

  Perez-Perez, Jenniffer (2022-12-13)

  Satellite images have shown massive amounts of drifting pelagic Sargassum spp. affecting the Caribbean islands since 2011. High-resolution satellite images have been used from January 2015 to 2021 to identify influxes and ...

• Effects of aggregation on three-phase photovoltaic inverters with Sandia frequency shift islanding detection 

  Saavedra Peña, Nelson Emil (2022-11-08)

  This thesis focuses on the development of an aggregated model of a three-phase photovoltaic (PV) inverter equipped with the Sandia frequency shift (SFS) islanding detection method. This SFS aggregated PV inverter model was ...

• Development of handheld induction heaters for magnetic fluid hyperthermia applications and in-vitro evaluation on ovarian and prostate cancer cell lines 

  Castro Torres, Jorge Luis (2022-12-13)

  Magnetic fluid hyperthermia (MFH) is a still experimental technique that has been found to have a potential application in the treatment of cancer. The goal of this method is to reach around 41-47°C in the tumor by exciting ...

• Desarrollo de alternativas de huertos bajo la modalidad de paredes verticales naturadas y sustentables en áreas urbanas 

  Loperena, Damayanti (2022-12-07)

  Un huerto vertical representa una alternativa de producción de alimentos en espacios reducidos de áreas urbanas. Los objetivos del estudio fueron diseñar y construir dos sistemas verticales para producción de plantas (Beta ...

• Sources and patterns of sedimentation at reefs adjacent to a coastal Caribbean watershed, southwest Puerto Rico 

  Ramírez Irizarry, Natalia I. (2022-12-08)

  Terrestrial runoff and land-based sources of pollution are considered one of the most direct threats to the health of coral reefs worldwide. In this study, we use geochemical and mineralogical analysis on sediments to ...

• Increasing hosting capacity of distribution feeders through energy storage and smart inverter functions 

  Huaman-Rivera, Anny (2022-12-06)

  Los sistemas de energía eléctrica han estado en constante transformación, específicamente los sistemas de distribución, ya que la penetración de los recursos energéticos distribuidos (DER) fotovoltaicos (FV) ha aumentado ...

• Soil and sedimentation dynamics of a widespread shallow landsliding event in a tropical montane setting 

  Irizarry Brugman, Edwin (2022-12-13)

  Rainfall-induced landslides occur predominantly because of intense tropical cyclones in Puerto Rico. The purpose of this study was to explore the role of specific soil attributes in mass wasting, the negative feedback ...

• Effect of physical cues in the expansion and secretory functions of cells 

  Rosado-Galindo, Heizel (2022-11-28)

  It is well established that cells have the ability to perceive different biochemical and physical cues of their microenvironment such as soluble factors, nutrients and matrix-mediated signals, including surface chemistry, ...

• Extreme environments promote cancerous behavior in healthy cells 

  Maldonado-Ortiz, Yolanda Ivette (2022-12-13)

  Cancerous cells are well adapted to acidic environments, promoting cancer cell survival and spreading into other organs. These cells can adapt and overcome existing extracellular obstacles that prevent cancer progression. ...

• Análisis de la distribución de PGA de sismos de magnitud moderada y escenario de la respuesta del terreno ante un sismo de M7.4 para Puerto Rico usando funciones empíricas de Green 

  Torres Ortiz, Denny Mariana (2022-12-14)

  Peak Ground Acceleration (PGA) and Pseudo Spectral Accelerations (PSA) distribution of two moderate magnitude earthquakes (M5.8, and M6.4) occurred in mainland and off-shore of Puerto Rico Island (PRI), recorded by the ...

• Insights into Fe-Skarn mineralization processes through garnet geochemistry and geochronology in Tibes, Puerto Rico 

  Giovannetti-Nazario, David A. (2022-12-12)

  The Tibes Skarn is a calcic-iron skarn in southern Puerto Rico containing abundant magnetite and garnet mineralization, the latter of which are significant geochemical tracers of magmatic-hydrothermal activity. These garnets ...

• Estimación de las pérdidas después del paso del Huracán María en empresas agrícolas de plátano y café en Puerto Rico 

  Lucarne, Joe Kirk R. (2022-12-13)

  El efecto más inmediato y visible de los huracanes sobre la agricultura es el daño a los cultivos, al ganado, a la propiedad del hogar, a los bienes de producción y a la infraestructura física. Estos daños pueden provocar ...

• Possible radius-to-intensity mapping in pulsar magnetospheres from observations with the Arecibo radio telescope 

  Zapata Vélez, Alnaldo J. (2022-12-13)

  We used the Arecibo Observatory and the Mock spectrometers to conduct pulsar radio observations at frequencies of 433, 1169 and 1620 MHz for two targets: PSR B0525+21 and PSR B0611+22. Radius-to-Frequency Mapping (RFM) ...

• The influence of thermic stress on the marine yeast Debaryomyces hansenii 

  Amaro Berrocal, Camille (2022-12-19)

  Often organisms must acclimate and adjust their metabolism to better adapt to an ever-changing environment. Some environments can be considered to have normalized parameters, while others truly challenge the homeostatic ...

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