Artículos de revistas
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Esta colección incluye artículos de revistas de profesores de la Pontificia Universidad Católica de Chile, publicados en revistas nacionales y extranjeras.
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- ItemThe Addition of Extra-Virgin Olive Oil Enhances the Antioxidant Capacity, Nutritional Quality, and Sensory Attributes of Vegetable Patties Prepared Using Different Cooking Methods(2026) Bustamante, Andrés; Valle, Consuelo; Echeverria Gonzalez Francisca Cecilia; Gonzales, Elva; Cabrales, Mónica; Farias, Camila; Muñoz, Yasna; Reyes, Beatriz; Mercado-López, Lorena; Valenzuela, RodrigoThe growing demand for healthier and more sustainable foods has driven interest in plant-based formulations with improved nutritional and sensory quality. In this context, this study evaluated the effect of extra-virgin olive oil (EVOO) addition and different cooking methods (baking, air-frying, and deep-frying) on the nutritional composition, fatty acid profile, total polyphenol content (TPC), antioxidant capacity (ORAC, FRAP, and DPPH), and sensory acceptability of vegetable patties. Patties were prepared with or without EVOO and cooked using the three methods. Deep-frying markedly increased fat content (45–75%), whereas baking and air-frying effectively limited oil absorption (0–10%). EVOO addition increased monounsaturated fatty acids, particularly oleic acid (37.2 g/100 g DW), and enhanced the transfer of phenolic compounds to the patties. Deep-fried, EVOO-enriched samples showed the highest TPC (3.93–5.22 mg GAE/100 g DW), while raw patties exhibited the highest ORAC values (5.17–6.02 µmol TE/100 g DW). Sensory evaluation indicated that EVOO-enriched patties achieved the highest overall preference when air-fried or baked (77–89%). Overall, enriching EVOO with less oil-intensive cooking methods improved the lipid profile, antioxidant capacity, and sensory quality of vegetable patties. These findings should be interpreted within the context of a single frying cycle representative of domestic cooking practices and a sensory evaluation conducted with an untrained panel mainly composed of young adults.
- ItemUna aproximación sociológica del cuerpo en la religión. Las representaciones sociales del cuerpo en el pentecostalismo chileno (1920 a 1940)(Facultad de Ciencias Sociales, Universidad Alberto Hurtado, 2011) Mansilla, Miguel Ángel; Sossa Rojas, AlexisEl presente artículo trata sobre la construcción del cuerpo en el pentecostalismo chileno, a partir de las representaciones sociales y culturales que el pentecostalismo elabora sobre el cuerpo. Frente a esto, exponemos que el cuerpo ha sido contemplado como residencia en una doble imagen, como templo y como tugurio. Luego analizamos cómo la corporalidad se simboliza. Por último, presentamos las representaciones de la corporalidad como santuario en las imágenes de los cuerpos jóvenes y femeninos como espacios en constante sospecha y profundo control.
- ItemRelaciones Limítrofes: el cuerpo en la Colonia Chilena a través de las crónicas de la época(2023) Sossa Rojas, Alexis Patricio; Brange Flores, Andres GuillermoEn este artículo proponemos investigar cómo era comprendido el cuerpo en la época colonial chilena a través de los relatos de Cautiverio Feliz (1673) como fuente principal, y de Historia General del Reino de Chile, Flandes Indiano (1674) y Histórica relación del Reyno de Chile (1646) como fuentes secundarias. Mediante un análisis del discurso de estas crónicas fundamentales de la época, interpelamos el cuerpo desde una perspectiva sociohistórica como un factor relevante para comprender, más allá del relato histórico, el papel que el cuerpo desempeñó en las relaciones sociales de un Chile que recién comenzaba a configurarse. Esto se corresponde con la relevancia simbólica del cuerpo como una realidad límite, situada entre lo micro y lo macro, lo cultural y lo natural, el sujeto y el objeto, la razón y la emoción, lo humano y lo animal, el “nosotros” y el “ellos”. Sostenemos que en estas crónicas es posible distinguir seis tipos de cuerpo que aparecen con marcada frecuencia o con una especial importancia simbólica.
- ItemOn planning cost-efficient and flexible aircraft maintenance operations: Technician shift scheduling and task assignment over multiple bases(2026) Sanhueza, José Ignacio; Delgado Aguilera, Felipe Andres; Klapp Belmar, Mathias AlbertoAirlines often outsource aircraft maintenance to third-party providers. As maintenance demand fluctuates, providers must dynamically plan in-house technician schedules, assign tasks to individual technicians, and determine when to rely on external resources, such as on-call shifts or outsourced work. We study how a maintenance provider should decide where (i.e., at which base), when (i.e., within each aircraft’s ground-time window), and by whom (i.e., which in-house technician) to perform each job to make an efficient use of resources and minimize external costs. We model this problem as an integer program and solve it via a Price-and-Branch heuristic with customized pricing models that identify profitable technician work patterns. We present several pricing model variants to explore different forms of technician labor flexibility, including multi-skilling, temporal flexibility (i.e., assigning different shift start times to technicians across workdays), and spatial flexibility (i.e., relocating technicians among maintenance bases). Using data from a maintenance provider, we quantify the potential cost savings associated with each source of labor flexibility. Compared to a base case, multi-skilled technicians offer the most significant cost reductions (48.5%), while the independent use of spatial and temporal flexibilities yields average reductions of 13% and 15%, respectively. Moreover, we observe that most benefits can be achieved with only a fraction of multi-skilled technicians. Overall, our approach obtains a potential cost reduction between 78% and 93%, when compared to a heuristic method that emulates a common practice of maintenance planners.
- ItemEstimation of Industrial Heat Balance Based on Actual Plant Data: A Case Study for Cement Plant(2026) Wolde Ponce Ian; Starke, Allan; da Silva, Alexandre K.; Cardemil Iglesias Jose MiguelThe industrial sector plays a significant role in anthropogenic effect on the environment due to greenhouse gases emissions associated with energy-intensive processes. To advance in the sustainability goals, it is essential to propose new modeling methodologies to assess the yield performance of clean technologies on industrial processes. However, due to the complexity and variety of such processes it is particularly challenging to assess the non-linear performance of industrial process in terms of heat loads, temperature, and others. The present study introduces a novel methodology to configure an estimation model of the heat released by the clinkering process in the cement industry, based only on operational data. Furthermore, a methodology is proposed to evaluate the correlation between the heat of the process and the operational parameters. The result of this methodology provides a function for the heat consumed or released by the chemical reactions of the process, based on the relevant operational parameters. The approach proposes a global specific enthalpy, parameter that represents the response of the process, only through the heat consumed or released by the chemical reactions. A methodology is proposed for evaluating the correlation of operational parameters with the proposed specific enthalpy. The methodology is validated by assessing the pyro-processes in the cement industry, renowned for its high energy intensity and pollution emissions. The proposed methodology could facilitate the evaluation of clean technologies into different industrial processes. This approach can guide industries in identifying opportunities for reducing pollution emissions while optimizing energy efficiency.