Repositorio Académico de la Universidad de Chile: Recent submissions

Now showing items 25621-25640 of 101786

    • Learning analytics in higher education: a preponderance of analytics but very little learning? 
      Guzmán Valenzuela, Carolina; Gómez González, Carolina; Rojas-Murphy Tagle, Andrés; Lorca Vyhmeister, Alejandro (Springer, 2021)
      In a context where learning mediated by technology has gained prominence in higher education, learning analytics has become a powerful tool to collect and analyse data with the aim of improving students' learning. However, ...
    • Light beam induced finger instability in a photosensitive liquid crystal cell 
      Andrade Silva, Ignacio; Clerc Gavilán, Marcel Gabriel; González Cortés, Martín Gregorio; Odent, Vincent (Amer Physical Soc., 2021)
      Interfaces limiting two phases in driven systems may exhibit rich dynamical behaviors. Optically induced phase transitions are of particular interest for the study of interfacial phenomena. Dye-doped liquid crystals offer ...
    • Light-induced ring pattern in a dye-doped nematic liquid crystal 
      Clerc Gavilán, Marcel Gabriel; González Cortés, Gregorio Fernando; Hidalgo, Paulina I.; Letelier, Lucciano A.; Morel, Mauricio J.; Vergara, Jorge (MDPI, 2021)
      The use of dye-doped liquid crystals allows the amplification of the coupling of light and liquid crystals. Light can induce the self-organization of the molecular order. The appearance of ring patterns has been observed, ...
    • Long-term exposure to fine and coarse particulate matter and covid-19 incidence and mortality rate in chile ... 
      Valdés Salgado, Macarena; Smith Guerra, Pamela Elisa; Opazo, Mariel; Huneeus Lagos, Nicolás Jorge (MDPI, 2021)
      Background: Several countries have documented the relationship between long-term exposure to air pollutants and epidemiological indicators of the COVID-19 pandemic, such as incidence and mortality. This study aims to explore ...
    • Major Histocompatibility Complex Class I-Related Chain A (MICA) allelic variants associate with susceptibility ... 
      Toledo Stuardo, Karen; Ribeiro, Carolina H.; Canals Cifuentes, María Andrea; Morales, Marcela; Gárate, Valentina; Rodríguez Siza, José; Tello, Samantha; Bustamante, Marco; Armisen, Ricardo; Matthies Eyzaguirre, Douglas Johans; Zapata Torres, Gerald Amilcar; González Hormazábal, Patricio; Molina Sampayo, María Carmen (Frontiers Media, 2021)
      Gastric cancer (GC) is the fifth most prevalent type of cancer worldwide. Gastric tumor cells express MICA protein, a ligand to NKG2D receptor that triggers natural killer (NK) cells effector functions for early tumor ...
    • Matrix stiffness modulates metabolic interaction between human stromal and breast cancer cells to stimulate ... 
      Ponce Calderón, Iván Emilio; Garrido, Nelson; Tobar Bachler, Nicolás Andrés; Melo, Francisco; Smith, Patricio; Martínez, Jorge (MDPI, 2021)
      Breast tumors belong to the type of desmoplastic lesion in which a stiffer tissue structure is a determinant of breast cancer progression and constitutes a risk factor for breast cancer development. It has been proposed ...
    • Medición de la vulnerabilidad social: propuesta de un índice para el estudio de barrios vulnerables a la ... 
      Jiménez García, Williams Gilberto; Manzano Chávez, Liliana; Mohor Bellalta, Alejandra Margarita (Univ. Autónoma Barcelona, España, 2021)
      The aim of this paper is to propose the construction of a social vulnerability index of households and neighborhoods in the presence of urban violence. The index, called SOVI, was built from a conceptual and methodological ...
    • Mental well-being and the influence of place: conceptual approaches for the built environment for planning ... 
      Zumelzu, Antonio; Herrmann Lunecke, Marie Geraldine (MDPI, 2021)
      Promotion of healthy cities has prompted urban planners and designers to build new conceptual frameworks to improve the design of public spaces, in which mental well-being emerges as a fundamental concept. Mental well-being ...
    • Micro-tomographic characterization of the root and canal system morphology of mandibular first premolars ... 
      Sierra Cristancho, Alfredo José; González Osuna, Luis; Poblete, Daniela; Cafferata Chea, Emilio Alfredo; Carvajal Pavez, Paola Lorena; Lozano Moraga, Carla Paola; Vernal Astudillo, Rolando Marcelo (Nature, 2021)
      This study aimed to analyze the root anatomy and root canal system morphology of mandibular first premolars in a Chilean population. 186 teeth were scanned using micro-computed tomography and reconstructed three-dimensionally. ...
    • Immunosuppressive Mechanisms of Regulatory B Cells 
      Catalán Martina, Diego Francisco; Mansilla, Miguel Andrés; Ferrier Espósito, Ashley Andrés; Soto, Lilian; Oleinika, Kristine; Aguillón Gutiérrez, Juan Carlos; Aravena, Octavio (Frontiers Media, 2021)
      Regulatory B cells (Bregs) is a term that encompasses all B cells that act to suppress immune responses. Bregs contribute to the maintenance of tolerance, limiting ongoing immune responses and reestablishing immune ...
    • Impact of safety message generation rules on the awareness of vulnerable road users 
      Lara, Tomás; Yáñez, Alexis; Céspedes Umaña, Sandra Lorena; Hafid, Abdelhakim Senhaji (MDPI, 2021)
      In the face of cooperative intelligent transportation systems (C-ITS) advancements, the inclusion of vulnerable road users (VRU), i.e., pedestrians, cyclists, and motorcyclists, has just recently become a part of the ...
    • Increased dietary availability of selenium in rainbow trout (Oncorhynchus mykiss) improves its plasma ... 
      Pérez Valenzuela, Javiera; Mejías, Madelaine; Ortiz, Daniela; Salgado, Pablo; Montt, Liliana; Chávez Báez, Ignacio; Vera Tamargo, Francisca Valeria; Mandakovic Seyler, Dinka Slavje; Wacyk González, Jurij; Pulgar Tejo, Rodrigo Enrique (BMC, 2021)
      Salmonid Rickettsial Septicaemia (SRS), caused by Piscirickettsia salmonis, is the most important infectious disease in the Chilean salmon farming industry. An opportunity to control this disease is to use functional ...
    • Influence of ACE gene i/d polymorphism on cardiometabolic risk, maximal fat oxidation, cardiorespiratory ... 
      Montes de Oca García, Adrián; Pérez Bey, Alejandro; Velázquez Díaz, Daniel; Corral Pérez, Juan; Opazo Díaz, Edgardo; Rebollo Ramos, María; Gómez Gallego, Félix; Cuenca García, Magdalena; Casals, Cristina; Ponce González, Jesús (MDPI, 2021)
      There is controversy about the relationship between ACE I/D polymorphism and health. Seventy-four healthy adults (n = 28 women; 22.5 +/- 4.2 years) participated in this cross-sectional study aimed at determining the influence ...
    • Intestinal helminths in wild rodents from native forest and exotic pine plantations (pinus radiata) in ... 
      Riquelme, Maira; Salgado, Rodrigo; Simonetti Zambelli, Javier Andrés; Landaeta Aqueveque, Carlos; Fredes Martínez, Fernando; Rubio, André V. (MDPI, 2021)
      Land-use changes are one of the most important drivers of zoonotic disease risk in humans, including helminths of wildlife origin. In this paper, we investigated the presence and prevalence of intestinal helminths in wild ...
    • Intravenous tranexamic acid is associated with safe reduced blood loss and transfusion rate in one-stage ... 
      Abdelaziz, Hussein; Chaabene, Ahmed; Schulmeyer Acuña, Juan Ignacio; Gehrke, Thorsten; Haasper, Carl; Hawi, Nael; Citak, Mustafa (Turkish Joint Diseases Foundation, 2021)
      Objectives: This study aims to investigate if the use of intravenous (IV) tranexamic acid (TXA) during one-stage exchange for periprosthetic joint infection (PJI) of the hip that necessitates an extensive debridement is ...
    • Computer-assisted planning with 3D printing for mandibular reconstruction caused by a mandibular fracture ... 
      Barreda Hale, Mauricio Alejandro; Romero Araya, Pablo; Cea Herrera, Macarena; Espinoza, Daniela; Castro, Nicolás; Castro, Joaquín; Serandour, Guillaume (Wiley, 2021)
      Mandibular reconstructions are complex clinical pictures that require careful planning for functional and aesthetic outcomes. Virtual surgical planning and 3D printing are ideal to achieve a predictable result. Through ...
    • Ecto-5′-nucleotidase (CD73) regulates the survival of CD8+ T cells 
      Rosemblatt Bono, Mariana Violeta; Parra Tello, Brian Josué; Briceño Catalán, Pedro Felipe; Rivas Yáñez, Elizabeth Camila; Tucer, Suat; Saavedra Almarza, Juan Pablo; Hormann Cornejo, Pilar Leonor; Martínez, Brandon A.; Lladser, Álvaro; Rosemblatt Silber, Mario César; Cekic, Caglar; Bono Merino, María Rosa; Sauma Mahaluf, Daniela Macarena (Frontiers Media, 2021)
      Ecto-5 '-nucleotidase (CD73) is an enzyme present on the surface of tumor cells whose primary described function is the production of extracellular adenosine. Due to the immunosuppressive properties of adenosine, CD73 is ...
    • Climate change and environmental health in undergraduate health degrees in Latin America 
      Palmeiro SilvaI, Yasna K.; Ferrada, María Teresa; Ramírez Flores, Jorge Andrés; Silva Santa Cruz, Ignacio (Faculdade de Saúde Pública da Universidade de São Paulo, Brasil, 2021)
      OBJECTIVE: Analyze the incorporation of climate change and environmental health courses in the curriculum grids of Medicine, Nursing, Nutrition and Clinical Psychology undergraduate courses in Latin American universities ...
    • Community mental health care in Mexico: a regional perspective from a mid‑income country 
      Carmona Huerta, Jaime; Durand Arias, Sol; Rodríguez, Allen; Guarner Catalá, Carmen; Cardona Muller, David; Madrigal de León, Eduardo; Alvarado Muñoz, Rubén Vladimir (BMC, 2021)
      Background: Access to mental health care is a worldwide public health challenge. In Mexico, an unacceptably high percentage of the population with mental disorders does not receive the necessary treatment, which is mainly ...
    • The demethylase inhibitor GSK‑J4 limits infammatory colitis by promoting de novo synthesis of retinoic acid ... 
      Doñas, Cristian; Neira, Jocelyn; Osorio Barrios, Francisco; Carrasco, Macarena; Fernández, Dominique; Prado, Carolina; Loyola, Alejandra; Pacheco, Rodrigo; Rosemblatt Silber, Mario César (Nature, 2021)
      Dendritic cells (DCs) promote T-cell mediated tolerance to self-antigens and induce inflammation to innocuous-antigens. This dual potential makes DCs fundamental players in inflammatory disorders. Evidence from inflammatory ...