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- Tesis Título Profesional Open AccessFactores asociados al dengue grave en pacientes hospitalizados: estudio de casos y controles en Iquitos, Perú, 2018-2025(Universidad Nacional de la Amazonía Peruana, 2026) Zevallos Tarazona, Carlos Teobaldo; Casapía Morales, Wilfredo MartínObjective: To determine the sociodemographic, clinical, and laboratory factors associated with severe dengue, as well as to identify the factors independently associated through logistic regression, in patients with laboratory-confirmed dengue hospitalized in the main healthcare facilities of Iquitos, Peru, during the 2018–2025 period. Methods: An observational, analytical, unmatched 1:2 case-control study with retrospective data collection was conducted. The sample consisted of 315 patients with laboratory-confirmed dengue, including 105 cases with severe dengue and 210 controls with dengue with warning signs, hospitalized at Hospital Regional de Loreto, Hospital de Apoyo Iquitos, and Hospital III Iquitos–EsSalud between 2018 and 2025. Descriptive analysis, bivariate analysis using crude Odds Ratios (cOR) with 95% confidence intervals (95% CI), and multivariable binary logistic regression using the Backward Stepwise method were performed. Results: The median age was 17 years (IQR: 10–29), and 53.0% of the patients were female. Multivariable analysis identified hyperbilirubinemia (total bilirubin ≥1.2 mg/dL) (aOR=10.000; 95% CI: 3.185–31.250; p<0.001), elevated ALT (aOR=9.709; 95% CI: 3.846–24.390; p<0.001), hepatomegaly (aOR=5.914; 95% CI: 2.044–17.112; p=0.001), leukocyte count <4,000/mm³ (aOR=3.535; 95% CI: 1.148–10.885; p=0.028), decreased platelet count (aOR=2.448; 95% CI: 1.100–5.448; p=0.028), increased hematocrit (aOR=1.132; 95% CI: 1.066–1.203; p<0.001), and older age (aOR=1.040; 95% CI: 1.003–1.079; p=0.036) as factors independently associated with severe dengue. The model showed adequate goodness of fit according to the Hosmer-Lemeshow test (χ²=15.086; p=0.057) and excellent discriminatory ability (AUC=0.972). Conclusions: Hyperbilirubinemia, elevated ALT, hepatomegaly, leukocyte count <4,000/mm³, decreased platelet count, increased hematocrit, and older age were independently associated with severe dengue. These findings highlight the importance of early clinical and laboratory assessment to identify patients at higher risk of developing severe dengue and to optimize hospital management strategies. Keywords: Severe dengue, associated factors, logistic regression, hepatomegaly, bilirubin, hematocrit.
- Tesis Título Profesional Open AccessEvaluación del servicio ambiental de captura y almacenamiento de carbono en el bosque de colina baja de los fundos San Antonio y Bella Flor, distrito de Contamana, Loreto. 2023(Universidad Nacional de la Amazonía Peruana, 2026) Rojas Chujandama, Bryan D'nilson; Burga Alvarado, RonaldThe ecosystem service of carbon capture and storage was evaluated in a low hill tropical forest using data obtained from the forest census conducted in the privately owned San Antonio and Bella Flor forest properties, located in the district of Contamana, Loreto Region, Peru. A total of 245 trees, representing 21 commercially important forest species distributed across 12 botanical families, were recorded. The forest exhibited a carbon storage capacity of 12.50 tC/ha, with Brosimum lactescens (1.39 tC/ha) and Hura crepitans (1.36 tC/ha) contributing the largest carbon stocks. The carbon dioxide (CO₂) sequestration capacity reached 45.89 tCO₂/ha, with Brosimum lactescens (5.12 tCO₂/ha) and Hura crepitans (4.99 tCO₂/ha) showing the highest sequestration potential. The nonparametric Kruskal–Wallis test revealed statistically significant differences (p < 0.001) in carbon storage and CO₂ sequestration among the forest species evaluated. These findings demonstrate that species with greater biomass make the greatest contribution to these ecosystem services and confirm that the studied low hill forest functions as an important carbon sink, thereby contributing to climate change mitigation.
- Tesis Grado de Maestro Open AccessPromoción del turismo interno y su relación con las actitudes hacia el consumo de servicios turísticos en jóvenes universitarios año 2025(Universidad Nacional de la Amazonía Peruana, 2026) Ahuanari Guerra, Sinthia Cleisy Valeria; Balbuena Hernández, José RicardoInadequate promotion of domestic tourism by the State, coupled with economic, cultural, and structural factors, limits the consumption of tourism services among university students. This reduces the sector's sustainable development, weakens cultural identity, and fails to capitalize on the economic and social potential of tourism in Peru. This study aims to identify the relationship between domestic tourism promotion and attitudes toward tourism service consumption among university students in 2025. The study population consisted of university students, employing a quantitative, observational approach. The sample comprised 106 students, and the results revealed a significant and positive relationship between domestic tourism promotion and attitudes toward tourism service consumption among university students. Specifically, dissemination strategies showed a high correlation with consumption attitudes, followed by tourism promotion and information accessibility. This confirms that these dimensions directly influence young people's tourism consumption intentions. The descriptive analysis showed that, although there is a perception of state campaigns, these still lack clarity. and frequency to be effective; likewise, it was evident that attitudes toward tourism are mostly positive, although conditioned by factors such as budget and perceived quality.
- Tesis Título Profesional Open AccessIdentificación y selección de árboles semilleros en dos tipos de bosque del Centro de Investigación Allpahuayo, Loreto, Perú. 2024(Universidad Nacional de la Amazonía Peruana, 2026) Pasmiño Torres, José Fernando; Pacheco Gómez, Tedi; Hidalgo Pizango, Carlos GabrielThis research was conducted at the Allpahuayo Research Center, Maynas Province, Loreto Region, Peru. Its objective was to identify and select seed trees in Varillal and Low Hill forests to contribute to the sustainable management of forest species by selecting individuals with desirable characteristics. The individual assessment method and selection criteria were used, evaluating each individual based on its phenotypic and health characteristics. Eight species were identified, resulting in the selection of 309 seed trees: 209 individuals of Caraipa utilis, 35 of Micrandra elata, 18 of Dimorphandra macrostachya, 14 of Tachigali loretensis, 10 of Virola pavonis, 7 of Macrolobium microcalyx, and 6 of Caraipa tereticaulis. The project concludes with 309 trees in category A (seedbed), 174 trees in category B and 9 in category C, guaranteeing a seed source for the conservation and restoration of Amazonian forests.
- Tesis Título Profesional Open AccessPredicción de la relación diámetro – altura comercial en las plantas de Brosimum utile (Kunth) Pittier en bosque natural, Puerto Almendra, Loreto, Perú – 2023(Universidad Nacional de la Amazonía Peruana, 2025) Vela Marquez, Jorge Germano; Alván Ruíz, Jorge ElíasThe objective of this study was to establish the relationship between diameter and commercial height of Brosimum utile (Kunth) Pittier individuals occurring in different sampling schemes within the natural forest of Puerto Almendra, Loreto, Peru, during 2023. The study variables were diameter at breast height (DBH ≥ 10 cm) and the commercial height of trees belonging to this species. The research included four sampling approaches. Sample 1 consisted of trees grouped into diameter classes with a 5-cm class interval. Sample 2 comprised individuals distributed into diameter classes with a 2-cm class interval. Sample 3 consisted of a random selection of 30 trees, whereas Sample 4, considered the representative sample, included 20 randomly selected individuals without stratification into diameter classes. The findings demonstrated that, for modeling the diameter–commercial height relationship of Brosimum utile (Kunth) Pittier in the natural forest, the cubic allometric model provided the best statistical fit across all four sampling approaches. Furthermore, the model exhibited an excellent correlation, with coefficients of determination (R²) ranging from 77% to 99%, indicating a high explanatory and predictive capacity. Consequently, the selected predictive equation for estimating commercial height as a function of diameter was: Y = −1.489 + (0.676 × t) + (−0.005 × t²) + (0.000 × t³).