Artículos de revistas

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https://repositorio.uc.cl/handle/11534/1156
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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    Territorial inequalities in oral health among children and adolescents: the cases of Biobío and Ñuble as risk factors in Chile
    (2025) Flores Cartes, Raúl Ignacio; Departamento de Prevención y Salud Pública. Facultad de Odontología Universidad de Concepción; Programa de Doctorado en Epidemiología, Escuela de Salud Pública. Pontificia Universidad Católica de Chile
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    Personalized Hemodynamic Resuscitation Targeting Capillary Refill Time in Early Septic Shock
    (2025) Hernández Poblete, Glenn Wilson; Ospina-Tascón, Gustavo A.; Kattan Tala, Eduardo José; Ibarra-Estrada, Miguel; Ramasco, Fernando; Orozco, Nicolás; Ramos, Karla; Luis Aldana, José; Ferri, Giorgio; Hamzaoui, Olfa; De Backer, Daniel; Teboul, Jean-Louis; Vieillard-Baron, Antoine; Petri Damiani, Lucas; García-Gallardo, Gustavo A.; Morales Zapata, Sebastián Andrés; Carmona García, Paula; Amthauer Rojas, Macarena Paz; Alegria Vargas, Leyla; Bakker, Jan
    Importance: The optimal strategy for hemodynamic resuscitation in early septic shock remains uncertain.Objective: To determine the effect of a personalized hemodynamic resuscitation protocol targeting capillary refill time (CRT-PHR) on a hierarchical composite outcome of mortality, duration of vital support, and length of hospital stay.Design, setting, and participants: This randomized clinical trial was conducted in 86 centers in 19 countries. Patients within the first 4 hours of septic shock were included between March 2022 and April 2025, with last follow-up in July 2025.Interventions: Patients were randomized to undergo CRT-PHR (n = 720), including assessment of pulse pressure, diastolic arterial pressure, fluid responsiveness, and bedside echocardiography, to tailor fluids, vasopressors, and inotropes, vs usual care (n = 747).Main outcomes and measures: The primary outcome was a hierarchical composite of mortality, duration of vital support (vasoactives, mechanical ventilation, and kidney replacement therapy), and length of hospital stay assessed at 28 days. A win ratio was calculated for the primary outcome by comparing all possible patient pairs, starting with the first event in the hierarchy and stratified by median APACHE (Acute Physiology and Chronic Health Evaluation) II score at admission. Secondary outcomes were mortality, vital support-free days, and length of hospital stay at 28 days.Results: From 1501 randomized patients, 1467 were included in the primary analysis (mean age, 66 [17] years; 43.3% female). There were 131 131 wins (48.9%) in the CRT-PHR group vs 112 787 (42.1%) in the usual care group for the hierarchical composite primary outcome, with a win ratio of 1.16 (95% CI, 1.02-1.33; P = .04). Individual wins for death were 19.1% vs 17.8%; duration of vital support, 26.4% vs 21.1%; and length of hospital stay, 3.4% vs 3.2% in the intervention vs usual care groups, respectively.Conclusions and relevance: Among patients with early septic shock, a personalized hemodynamic resuscitation protocol targeting capillary refill time was superior to usual care for the primary composite outcome, primarily due to a lower duration of vital support.
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    Two-dimensional layered materials for triboelectric nanogenerators
    (2026) Natarajan, Gnanaseelan; Pabba, Durga Prasad; Acuña Ureta, David Esteban; Fischerauer Gerhard; Tremmel, Stephan; Marian, Max
    Triboelectric nanogenerators (TENGs) have emerged as promising technology for harvesting mechanical energy from diverse sources, including human motion, vibrations, and environmental forces. Layered or two-dimensional materials, such as MXenes, graphene, carbon nanotubes, transition metal dichalcogenides (TMDs), metal–organic frameworks (MOFs), and covalent organic frameworks (COFs), have gained significant attention for their ability to enhance TENG performance through tailored electronic properties, surface functionalization, and structural modifications. This review provides a comprehensive overview of the latest advancements in TENGs utilizing layered materials, discussing their material design, triboelectric behavior, and integration strategies. Theoretical models explaining charge transfer mechanisms, charge trapping effects, and energy conversion efficiency are critically analyzed. Additionally, challenges related to material degradation, wear, environmental stability, and scalability are addressed, along with potential solutions, such as self-healing tribolayers and advanced energy management circuits. By bridging material science and triboelectric nanogenerator technology, this review highlights future directions for the development of high-performance, durable, and sustainable energy harvesting systems.
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    Go East… La construcción del vínculo comercial con Japón desde Argentina, 1934-1940
    (2025) Rayes, Agustina; Iacobelli, Pedro; Díaz Bahamonde, José Gregorio
    El comercio transpacífico entre América Latina y Asia Oriental durante el período previo a la Segunda Guerra Mundial ha sido escasamente estudiado. En este artículo, analizamos la construcción desde Argentina del vínculo mercantil con Japón entre 1934 y 1940. Al hacerlo, ponderamos las oportunidades y las limitaciones que surgieron en un contexto de des-globalización económica, y arrojamos luz sobre las posibilidades de diversificación geográfica del comercio exterior argentino. Abordando diversas fuentes de los sectores público y privado, el estudio revela que las iniciativas gubernamentales por profundizar los lazos con el socio oriental, apoyadas por los agroexportadores, enfrentó críticas de los empresarios textiles, quienes acusaron a Japón de ejercer dumping financiero y social.