• Evaluación de cadmio, cromo y plomo en suelos de potencial agrícola en la isla de Vieques 

  Sáez Rivera, Joel (2020-05-27)

  Los metales pesados y elementos traza son de importancia en el medio ambiente por su trascendencia en la contaminación de suelos, éstos se encuentran en el suelo de manera natural o por acciones antropogénicas. Los problemas ...

• Effect of initial formulation conditions, process parameters and equipment design on wet granulation 

  Candelaria-Custodio, Madeline (2020-07-24)

  Ease of administration and handling are some of the reasons to keep solid oral dosage forms as the presentation of predilection for today’s medicines. Today, pharmaceutical companies are looking for more efficient processes ...

• El efecto de las perturbaciones energéticas y climáticas en el empleo agrícola en Puerto Rico 

  López Méndez, Christopher (2020-05-29)

  This thesis evaluates the effect of extreme weather conditions and the input costs on agricultural employment in Puerto Rico. In the period from 2014 to 2016, Puerto Rico had the most severe drought in the last 100 years, ...

• Evaluación de bioestimulantes, fertilizantes y fungicidas en granada (Punica granatum) en Puerto Rico 

  González-Martínez, Sofía Cristina (2020-05-29)

  Pomegranate (Punica granatum L.) presents an opportunity of economic growth (fresh fruit, ornamental, medicinal and industrial sector) in Puerto Rico due to its superfruit status and global interest, however, information ...

• Exploring Influencing Factors in English Language Acquisition in Puerto Rican English Majors 

  Hernández-Giovannetti, Itza (2020-05-16)

  Este proyecto de investigación utilizó historias de vida para explorar cómo estudiantes del departamento de inglés de la Universidad de Puerto Rico en Mayagüez (UPRM) aprendieron inglés. El objetivo original era investigar ...

• Percepción de estudiantes universitarios sobre el ambiente de clase luego del Huracán María 

  Peña-Rivera, Sofia M. (2020-05-26)

  The purpose of this study is to observe and document the perception and experiences of undergraduate students in the Department of Kinesiology of the University of Puerto Rico, Mayagüez Campus, about teacher-student ...

• Grafos de divisores irreducibles 

  López-Mercado, Christian José (2020-04-21)

  La teor\'ia de grafos de $\tn$-divisores $\tn$-irreducibles, conocidos tambi\'en como $\tn$-grafos, surge como una posible aplicaci\'on a la teor\'ia de $\tn$-factorizaciones. La teor\'ia de $\tn$-grafos se desarroll\'o ...

• Mejoramiento de las propiedades físicoquimicas del tembleque puertorriqueño 

  Torres-Lozada, Fabiola Alexandra (2020-05-19)

  El "tembleque" es un tipo de natilla de coco típica de Puerto Rico. Este plato es bastante tradicional en otros países latinoamericanos y en Italia. El coco es una fruta rica en hierro, potasio, calcio, fósforo y magnesio; ...

• Development of Blend Uniformity Determination Methodologies in Continuous Pharmaceutical Manufacturing Processes using Near- Infrared Spectroscopy 

  Alvarado-Hernández, Bárbara B. (2020-04-17)

  Pharmaceutical companies are responsible for the development of their own blend uniformity specifications and guidelines to assure uniformity and homogeneity. Blend uniformity is a critical in the manufacturing of solid ...

• Adsorption of pollutants by spent-coffee-grounds composite beads 

  Torres-Cabán, Roberto José (2020-05-19)

  The use of heavy metals in technological applications has led to detrimental effects on the environment. Activated carbon is commonly used to remove pollutants but it is expensive. Therefore, the research of low-cost ...

• Percepción de la satisfacción de los caficultores de los pueblos de Adjuntas, Lares y Maricao respecto al uso de los métodos de enseñanza utilizados por el Servicio de Extensión Agrícola para aumentar la producción de quintales de café por cuerda 

  Lugo-Ramírez, Victor L. (2020-05-26)

  This quantitative, correlational descriptive study sought to determine the perception of coffee growers who receive technical advice from the Agricultural Extension Service (SEA) in coffee production. The research used ...

• Porous coordination pillared layer networks: Hysteretic gas adsorption and functionalization for superior CO2 uptake 

  Riascos-Rodríguez, Karina (2020-02-03)

  Porous coordination polymers (PCPs) are crystals holding pore sizes and shapes with tremendous capabilities for carbon capture based on adsorption. Coordination pillared layer networks, with copper as central node, Cu2+-CPL-n, ...

• Efectos de un protocolo de alimentación intensiva sobre el crecimiento y salud de becerras y becerros Holstein y Jersey en el trópico 

  Navedo Guzmán, Ninochka (2020-05-26)

  The objective of this research was to assess the growth and health of Holstein and Jersey calves under an intensive feeding protocol (INT) and a traditional feeding protocol (TRA) under tropical conditions. Calves were ...

• Efecto de L-carnitina dietética sobre algunos parámetros repodcutivos en semen de gallos Brown Leghorn 

  Banuchi Valentín, Kiara M. (2020-05-26)

  One hundred thirty-day-old male breeders of the Brown Leghorn breed were randomized to diets with 0, 250 and 500 mg/kg of L-carnitine. All birds were fed equal amounts of their respective diet from the first week until the ...

• Evaluación de tratamientos post-cosecha para reducir lesiones de antracnosis (Colletotrichum gloeosporoides) en frutos de papaya (Carica papaya L.) 

  Cabrera Bartolomei, Yoriann (2020-05-29)

  Papaya (Carica papaya L.) is a fruit, native from Central America. In Puerto Rico, papaya is one of the tropical fruits in greatest demand; given its medicinal benefits and high nutritional value. However, its harvest has ...

• Calidad microbiológica de la leche pasteurizada entera (3.25%) y parcialmente descremada (1%) en Puerto Rico y su efecto en el largo de vida útil 

  Otero Franqui, Angel (2020-05-29)

  Se analizaron 20 muestras de leche pasteurizada (10 enteras, 10 parcialmente descremadas) durante un transcurso de 10 semanas, comenzando en noviembre 2018 y terminando en marzo 2019, para determinar el efecto que tiene ...

• The rise of messaging Apps and their influence on language learning 

  Ríos Hernández, José (2020-05-27)

  Mobile text messaging and its effect on language use has been a well-studied field in past years. However, not until recently have mobile messaging apps and their influence on language learning been researched. Nowadays, ...

• Effects of Mg and Si additions to novel Al-Ce based alloys for aerospace applications 

  de Jesús López, Manny Xavier (2020-07-24)

  The experimental work in this thesis is focused on the alloying effects of Mg and Si in Al-Ce base alloys. The alloys were gravity cast over a 20-point (or target chemical compositions) test matrix. X-ray diffraction, ...

• Alternate texts, alternate pedagogies: Autoethnographic research with graduate teaching assistants in an ESL environment 

  García de la Noceda Vázquez, Laura (2020-07-23)

  The purpose of this thesis is to study the graduate teaching assistants (GTAs) who are instructors of record in undergraduate-level general education courses in the Department of English at the University of Puerto Rico ...

• TNT and MO photodegradation in deionized and salt waters with visible light assisted by photoactivation of modified TiO2 

  Padilla Rivera, Gabriela I. (2020-05-22)

  The release of munitions during military combat events or training exercises represents an alarming situation to the marine environment. Since nitroaromatic compounds (NACs) that are released from these weapons remain in ...

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