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- Biocombustibles, aditivos y sistema de postratamiento de emisiones de escape. Parte II(Unidad de Fondo Editorial EDUNI, 2025-11) León Vargas, Frank Romel; García Pérez, Victor; Delgado Acevedo, Aldo Max; Ruiz Paredes, Roger; Bardales Grández, Kosseth Marianella; García Navarro, Matsen RolandoEl presente texto “Biocombustibles, Aditivos y Sistemas de Pos-Tratamiento de Emisiones de Escape” tiene como objetivo poner al alcance de los estudiantes de la elaboración, especificaciones, limitaciones técnicas, opinión de las compañías fabricantes de automóviles, tendencias de su uso en el mundo, cuidado en el transporte, biomasa. Asimismo, se incluye un capítulo referido a los aditivos utilizados para mejorar la performance de los motores a diesel y gasolineros. La literatura utilizada para la elaboración del presente texto, corresponde principalmente a la compilación de la información recibida por el suscrito durante la asistencia a los diferentes seminarios y cursos, asimismo involucra aspectos a su experiencia profesional en la industria del petróleo y como docente durante el dictado de cursos relacionados con los temas de combustibles. El texto es de fácil lectura para su entendimiento y en su primer capítulo ilustra generalidades sobre el calentamiento global, el efecto invernadero y el porqué de la necesidad del uso de los biocombustibles y en los demás capítulos se detalla lo que en si representan tanto el Gasohol y el Biodiesel.
- Biocombustibles, aditivos y sistema de postratamiento de emisiones de escape. Parte I.(Unidad de Fondo Editorial EDUNI, 2025-11) León Vargas, Frank Romel; García Pérez, Victor; Delgado Acevedo, Aldo Max; Ruiz Paredes, Roger; Bardales Grández, Kosseth Marianella; García Navarro, Matsen RolandoProvee a los estudiantes una guía accesible sobre los biocombustibles, abarcando su elaboración, especificaciones técnicas, limitaciones, perspectiva de los fabricantes automotrices, tendencias globales, logística de transporte y fuentes de biomasa. Incorpora un análisis detallado sobre los aditivos diseñados para optimizar el rendimiento de motores diésel y de encendido provocado (gasolineros).
- Tesis Título Profesional Open AccessRelación de la gestión logística y la eficiencia de la tesorería en la Municipalidad Distrital de San Juan Bautista, año 2025(Universidad Nacional de la Amazonía Peruana, 2026) Arce Fasabi, Roselyne Esther; Vasquez Amasifuen, Irina; Cordova Paima, Luis Carlos; Ramírez del Aguila, José ReguloThe objective of this research was to determine the relationship between logistics management and treasury efficiency at the San Juan Bautista District Municipality, identifying how planning, purchasing, inventory control, and interdepartmental coordination influence timely payments and cash flow management. A quantitative, correlational, and cross-sectional design was used, applying a structured questionnaire to 24 employees from the logistics and treasury departments. The data were processed using descriptive statistics and Spearman's rho coefficient after a normality test. The results showed a very high and significant positive correlation between logistics management and treasury efficiency (ρ=0.995; p<0.05), as well as equally strong relationships with logistics planning, purchasing management, warehouse control, and interdepartmental coordination. It was found that streamlined logistics processes, reliable records, and timely communication reduce administrative rework, improve payment scheduling, and strengthen institutional liquidity. As a novel contribution, the study empirically demonstrates that the operational integration of logistics and treasury is a critical factor for municipal financial efficiency. It concludes that the systemic strengthening of logistics management is a key strategy for optimizing treasury management and transparency in the use of public resources.
- Tesis Título Profesional Open AccessActividades género literario en el desarrollo de la expresión oral de los niños de cuatro y cinco años de La Institución Educativa Inicial UNAP – María Reiche, San Juan Bautista, Iquitos 2025(Universidad Nacional de la Amazonía Peruana, 2026) Rivera Guerrero, Katherine; Vásquez Pinedo, Gladys MarleneThe objective of the present research was to know the relationship of literary genre activities in the development of oral expression in children aged four and five at the Institution Educative Initial María Reiche, San Juan Bautista, Iquitos - 2025. For this purpose, a quantitative approach was applied, with a descriptive-correlational type and a non-experimental cross-sectional design. The sample consisted of 112 students aged four and five, selected through non-probabilistic convenience sampling. For data collection, the observation technique was used, and duly validated checklists were applied. Descriptive analysis results showed deficient levels in literary activities (82.1%) and oral expression (93.8%). The Rho de Spearman test determined a moderate positive correlation (ρ = 0.361; p = 0.000), confirming that a significant relationship exists between the study variables. It is concluded that, given the generalized low performance, it is urgent to systematically integrate stories and dramatizations, as well as to strengthen teacher training to improve verbal fluency and coherence in infants.
- Tesis Título Profesional Open AccessÍndice de vulnerabilidad y de Mesomorfía en dos especies forestales de diferentes densidades básicas en Puerto Almendra, Iquitos, 2023(Universidad Nacional de la Amazonía Peruana, 2025) Ramirez Zevallos, Any Alisson; Arellano Valderrama, JarlinThis study aimed to determine the Vulnerability Index (VI) and the Mesomorphy Index (MI) in two forest species with different basic densities: Guatteria excellens R.E. Fr. (“Carahuasca negra”) and Eschweilera rufifolia S.A. Morí (“Machimango colorado”), collected from the Arboretum “El Huayo” in Puerto Almendra, Iquitos. The recommendations of the IAWA (1989) were applied to evaluate the quantitative anatomical characteristics of the secondary tissue, based on histological sections and dissociated tissues. The research followed a descriptive and quantitative design, employing microscopic measurements of tangential pore diameter, vessel frequency per mm², and vessel element length. The results revealed significant differences in VI and MI values between the two species. Guatteria excellens recorded an average VI of 33.71 and an MI of 17,609.87, indicating high efficiency in water conduction but greater susceptibility to cavitation. In contrast, Eschweilera rufifolia obtained an average VI of 21.55 and an MI of 8,689.27, evidencing lower vulnerability and a higher capacity to adapt both to flooding conditions and to periods of water deficit. Both species exhibited mesomorphic characteristics oriented toward water transport efficiency, although with different levels of resistance to water stress. It is concluded that, despite sharing a mesomorphic tendency, Eschweilera rufifolia demonstrated greater ecological stability and adaptability to changes in water availability, unlike Guatteria excellens, which proved more prone to drought and interruptions in conduction.