Communities in PRCR
Select a community to browse its collections.
- Colecciones de la Albizu University
- Colecciones digitales de Atenas College
- Colecciones de los Centros Sor Isolina Ferré
- Materiales utilizados para la certificación.
Recent Submissions
DPC RAM Report for PR Metropolitan Archives and Libraries
(2025) COBIMET, Inc.
Digital preservation represents a strategic challenge for libraries and archives in the face of the accelerated growth of physical and electronic information resources. This article consolidates the findings of a study conducted in seventeen institutions located in the metropolitan area of Puerto Rico, applying the Digital Preservation Coalition's Rapid Assessment Model (DPC RAM) as an analytical tool. Using capability maturity models (CMMs) and their respective assessment criteria, organizations can now objectively assess their existing strategic capabilities, identify gaps, and promote development to foster innovation in digital archival preservation. The findings help diagnose the level of digital preservation maturity and provide guidance for policies, capacity development strategies, and sustainable solutions that will enable long-term documentary preservation.
Analysis of Physical and Mental Performance of an Equine Rider Before and After of Equine Activities
(Polytechnic University of Puerto Rico, 2025-09-11) Valladares Méndez, Alejandra I.; Avilés Paizy, Valentina A.; Bravo Pérez, Ricardo J.; Rondón Contreras, Jairo J.
Physical and psychological effects of equitation, particularly across different equine gaits, remain underexplored. This study investigates how lateral and diagonal gaits at varying speeds (walk, trot, gallop) influence a rider’s physical and mental performance, focusing on cardio-respiratory coherence and cardiovascular response. Using a VO2 Master Analyzer and Polar H10 heart rate sensor, six trials were conducted with an off-track thoroughbred (diagonal gait) and a criollo pony (lateral gait). Each trial involved monitored rest, followed by gaitspecific riding durations. Through a case study approach, the methodology was established for future research, revealing that increased velocity correlates with higher energy demand (VO2) and reduced heart rate variability (HRV), indicating
diminished stress control.
AI in Healthcare Documentation: A Tool for Validating Specificity and Accuracy in Medical Notes
(Polytechnic University of Puerto Rico, 2025-09-11) Fontánez Ortiz, Valeria Nicole; Brenes Catinchi, Joanne
Accurate clinical documentation is essential for effective care and
diagnosis, as vague or incomplete notes can contribute to serious
medical errors.This research proposes an AI-powered validation tool
that uses ChatGPT and Google Gemini AI to evaluate the accuracy and
specificity of SOAP-formatted clinical notes. The tool integrates a
Forest-Based Validation Algorithm to classify each section as Valid,
Vague, Not Defined, or Missing. Built using Agile methodology, the tool
was tested through both quantitative metrics (accuracy, precision, error
rate) and human review. Results show the tool enhances documentation
quality while supporting clinician workflows and ethical AI use in
healthcare.
Extraction and Characterization of Pectin from Citrus Sinensis for its Application in Biodegradable Materials
(Polytechnic University of Puerto Rico, 2025-09-11) Algarín Montañez, Sophia J.; Kery García, Naomi; Sánchez Guzmán, Geliz M.; Florián Algarín, Miguel A.
Considering the escalating environmental concern over plastic, which accounts for 73% of global waste, and the increasing contamination from food biomass, there is an urgent need for sustainable solutions. A clear example of this problem can be seen in Puerto Rico, where organic waste represents more than 35% of municipal solid waste. Therefore, the development of sustainable alternatives and an effective food waste management strategy is necessary. This study researches the use of orange peels, an organic solid waste, as a potential source for the extraction of pectin, a biopolymer known for its gel-forming capabilities and biodegradability. The objective was to extract and characterize citric pectin to determine its potential development of sustainable materials to reduce environmental impact. Pectin was extracted using two hydrolysis methods: acid hydrolysis with acetic acid (CH COOH) and basic hydrolysis with sodium hydroxide (NaOH), and compared with commercial pectin through FTIR and characterization tests. Thus, the basic extraction produced the highest methoxylated pectin (% DE: 99.09 % , % DM: 27.04 %), while the acid extraction provided a pectin with a gelling capacity of 67.14%, implicating further assessment of gelation potential under specific conditions and its corresponding properties. However, the commercial pectin sample was superior in purity and quality, due to it having a humidity of 0.77% and ash content of 1.40% Therefore, this research aimed to demonstrate the viability of transforming food waste into biomaterials that could ultimately replace non-renewable sources and reduce plastic production.
Natural Polymers for Conductive Hydrogel in Electrocardiogram Applications
(Polytechnic University of Puerto Rico, 2025-09-11) Colón Robles, Paola A.; Stibie-Cook, Grace P.; Rondón Contreras, Jairo J.; Bravo Pérez, Ricardo J.
This study investigates the development of conductive hydrogels from natural polymers, chitosan and sodium alginate, as sustainable alternatives to commercial ECG electrode gels. Designed to improve biocompatibility, adhesion, conductivity, and moisture retention, the hydrogels were characterized through pH measurement, conductivity testing, impedance analysis, and viscosity evaluation. Comparative results show that sodium alginate formulations, particularly SA Form 6, achieved pH levels close to commercial gels, exhibited high permittivity, and demonstrated stable capacitive behavior, while chitosan-based gels had lower pH and conductivity outside the optimal ECG range. Several formulations approached commercial standards in viscosity and dielectric properties, though conductivity requires further optimization for accurate signal transmission. These findings highlight sodium alginate as a promising, eco-friendly candidate for biomedical and wearable applications, with targeted improvements needed to maximize performance.