Facultad de Ciencias Físicas y Matemáticas: Recent submissions

Now showing items 7081-7100 of 21845

    • Evaluación de factibilidad técnica, estratégica y económica para la apertura de una filial de la Empresa ... 
      Ascencio Matamala, René Andrés Luis (Universidad de Chile, 2019)
      El objetivo de este estudio es evaluar la factibilidad técnica, estratégica y económica para la apertura de una filial de la empresa RAM Turismo en la Región Metropolitana, que permita alcanzar una utilidad acumulada de ...
    • Desempeño de marco arriostrado excéntricamente de varios niveles sin losa intermedia 
      Valenzuela Núñez, Rodrigo Andreas (Universidad de Chile, 2019)
      El sistema estructural de marcos arriostrados de varios niveles sin losa intermedia (MTBF) posee dos o más niveles arriostrados lateralmente en una estructura con altura única, las cuales están encargada de resistir la ...
    • Drenaje ácido natural: el caso de Campos de Ahumada, Chile Central 
      Treskow Guzmán, Vanessa Alejandra (Universidad de Chile, 2019)
      El drenaje ácido, sea natural o asociado a actividades mineras, se debe a la oxidación de sulfuros. Un proceso que genera pH ácidos y, elevadas concentraciones de metales en las aguas, creando un grave problema medioambiental. ...
    • Análisis y simulación de procesos de contaminación en acuíferos costeros mediante modelos de transporte reactivo 
      Palavecino Parada, Jasmín Natalia (Universidad de Chile, 2019)
      Chile es un país con una extensa área de costa la cual ha tenido un desarrollo urbanístico que no necesariamente considera la creciente demanda de recursos hídricos lo cual puede llevar a una sobrexplotación, induciendo ...
    • Snacking patterns among Chilean children and adolescents: Is there potential for improvement? 
      Jensen, Melissa L.; Corvalán Aguilar, Camila; Reyes, Marcela; Popkin, Barry M.; Taillie, Lindsey Smith (Cambridge University Press, 2019)
      Objective:To examine snacking patterns, food sources and nutrient profiles of snacks in low- and middle-income Chilean children and adolescents.Design:Cross-sectional. Dietary data were collected via 24 h food recalls. We ...
    • Association study among candidate genetic polymorphisms and chemotherapy-related severe toxicity in testicular ... 
      Lavanderos, María A.; Cayún, Juan P.; Roco, Ángela; Sandoval, Christopher; Cerpa, Leslie; Rubilar, Juan C.; Cerro, Roberto; Molina-Mellico, Sebastián; Celedón, Cesar; Cerda, Berta; García-Martín, Elena; Agúndez, José A.G.; Acevedo, Cristián; Peña, Karina; Cáceres, Dant (Frontiers Media S.A., 2019)
      Testicular cancer is one of the most commonly occurring malignant tumors in young men with fourfold higher rate of incidence and threefold higher mortality rates in Chile than the average global rates. Surgery is the initial ...
    • Support of the laboratory of microbiology and pathological anatomy in the diagnosis and management of ... 
      Ferrés Garrido, Marcela; Lafourcade, Mónica; Gambra, Pilar; Cerón, Inés; Payá, Ernesto; Oddó, David (Sociedad Chilena de Infectologia, 2019)
      The confrontation of the differential and etiological diagnosis of the infectious diseases of cancer patients, including hematopoietic stem cells transplant (HSCT) recipients, must correspond to an informed, timely decision ...
    • Duodenogastric biliary reflux assessed by scintigraphic scan in patients with reflux symptoms after sleeve ... 
      Braghetto Miranda, Italo; González, Patricio; Lovera, Cesar; Figueroa-Giralt, Manuel; Piñeres, Amy (Elsevier Inc., 2019)
      Background: Bile reflux is a factor in the appearance of severe esophagitis and Barrett's esophagus, which have been reported after sleeve gastrectomy (SG). Incompetent lower esophageal sphincter and increased gastroesophageal ...
    • Development and Characterization of Florfenicol-Loaded BSA Nanoparticles as Controlled Release Carrier 
      Arriagada, Francisco; Günther, Germán; Zabala, Irene; Rubio-Retama, Jorge; Morales, Javier O. (Springer New York LLC, 2019)
      Florfenicol (FLO) is a broad-spectrum fluorinated antibiotic used for the treatment of bacterial diseases such as bovine respiratory disease (BRD) in cattle. FLO is a poorly soluble drug in aqueous solution, and its ...
    • Sterol regulatory element-binding protein (Sre1) promotes the synthesis of carotenoids and sterols in ... 
      Gutiérrez, María Soledad; Campusano, Sebastián; González, Ana María; Gómez, Melissa; Barahona, Salvador; Sepúlveda, Dionisia; Espenshade, Peter J.; Fernández-Lobato, María; Baeza, Marcelo; Cifuentes, Víctor; Alcaíno Gorman, Jennifer (Frontiers Media S.A., 2019)
      Xanthophyllomyces dendrorhous is a basidiomycete yeast that synthesizes carotenoids, mainly astaxanthin, which are of great commercial interest. Currently, there are many unknown aspects related to regulatory mechanisms ...
    • Effects of aspirin on rat fetuses with reduction of uterine perfusion pressure Efectos de la aspirina en ... 
      Conei, Daniel; Gutiérrez, Ditsa Cáceres; Haverbeck, Michael; Fierro, Roberto; Veuthey, Carlos; Del Sol, Mariano; Rauco, Mariana Rojas (Universidad de la Frontera, 2019)
      Preeclampsia (PE) is a hypertensive disorder induced by pregnancy where there is a reduction in the uterine perfusion pressure. Research supports the use of low dose aspirin (LDAAS) and its usefulness in the prevention of ...
    • Magnetic Otto engine for an electron in a quantum dot: Classical and quantum approach 
      Peña, Francisco J.; Negrete, Oscar; Barrios, Gabriel Alvarado; Zambrano, David; González, Alejandro; Nunez, Alvaro S.; Orellana, Pedro A.; Vargas, Patricio (MDPI AG, 2019)
      We studied the performance of classical and quantum magnetic Otto cycle with a working substance composed of a single quantum dot using the Fock-Darwin model with the inclusion of the Zeeman interaction. Modulating an ...
    • The combined effect of cold and copper stresses on the proliferation and transcriptional response of listeria ... 
      Quesille-Villalobos, Ana María; Parra, Angel; Maza, Felipe; Navarrete, Paola; González, Mauricio; Latorre, Mauricio; Toro, Magaly; Reyes-Jara, Angélica (Frontiers Media S.A., 2019)
      Listeria monocytogenes is a foodborne pathogen that can cause severe disease in susceptible humans. This microorganism has the ability to adapt to hostile environmental conditions such as the low temperatures used by the ...
    • WebCEMiTool: Co-expression modular analysis made easy 
      Cardozo, Lucas E.; Russo, Pedro S.T.; Gomes-Correia, Bruno; Araujo-Pereira, Mariana; Sepúlveda-Hermosilla, Gonzalo; Maracaja-Coutinho, Vinicius; Nakaya, Helder I. (Frontiers Media S.A., 2019)
      Co-expression analysis has been widely used to elucidate the functional architecture of genes under different biological processes. Such analysis, however, requires substantial knowledge about programming languages and/or ...
    • Chronic Inflammation as a Link between Periodontitis and Carcinogenesis 
      Hoare, Anilei; Soto, Cristopher; Rojas-Celis, Victoria; Bravo, Denisse (NLM (Medline), 2019)
      Periodontitis is characterized by a chronic inflammation produced in response to a disease-associated multispecies bacterial community in the subgingival region. Although the inflammatory processes occur locally in the ...
    • Dopamine receptor D3 expression is altered in CD4+ T-cells from Parkinson's disease patients and its ... 
      Elgueta, Daniela; Contreras, Francisco; Prado, Carolina; Montoya, Andro; Ugalde, Valentina; Chovar, Ornella; Villagra, Roque; Henríquez, Claudio; Abellanas, Miguel A.; Aymerich, María S.; Franco, Rarael; Pacheco, Rodrigo (Frontiers Media S.A., 2019)
      Copyright © 2019 Elgueta, Contreras, Prado, Montoya, Ugalde, Chovar, Villagra, Henríquez, Abellanas, Aymerich, Franco and Pacheco. This is an open-access article distributed under the terms of the Creative Commons Attribution ...
    • Elemental and Mineralogical Composition of the Western Andean Snow (18°S–41°S) 
      Alfonso, Juan A.; Cordero, Raul R.; Rowe, Penny M.; Neshyba, Steven; Casassa, Gino; Carrasco, Jorge; MacDonell, Shelley; Lambert, Fabrice; Pizarro, Jaime; Fernandoy, Francisco; Feron, Sarah; Damiani, Alessandro; Llanillo, Pedro; Sepulveda, Edgardo; Jorquera, Jose; Garci (Nature Publishing Group, 2019)
      The snowpack is an important source of water for many Andean communities. Because of its importance, elemental and mineralogical composition analysis of the Andean snow is a worthwhile effort. In this study, we conducted ...
    • δ-Generalized Labeled Multi-Bernoulli Simultaneous Localization and Mapping with an Optimal Kernel-Based ... 
      Moratuwage, Diluka; Adams, Martin; Inostroza, Felipe (NLM (Medline), 2019)
      Under realistic environmental conditions, heuristic-based data association and map management routines often result in divergent map and trajectory estimates in robotic Simultaneous Localization And Mapping (SLAM). To ...
    • Parameter estimation and mathematical modeling for the quantitative description of therapy failure due to ... 
      Cumsille, Patricio; Godoy, Matías; Gerdtzen, Ziomara P.; Conca, Carlos (Public Library of Science, 2019)
      In this work we develop a general mathematical model and devise a practical identifiability approach for gastrointestinal stromal tumor (GIST) metastasis to the liver, with the aim of quantitatively describing therapy ...
    • Spatial rogue waves in photorefractive SBN crystals 
      Hermann Avigliano, C.; Salinas, I. A.; Rivas, D. A.; Real, B.; Mančić, A.; Mejía-Cortés, C.; Maluckov, A.; Vicencio, R. A. (OSA - The Optical Society, 2019)
      We report on the excitation of large-amplitude waves, with a probability of around 1% of total peaks, on a photorefractive SBN crystal by using a simple experimental setup at room temperature. We excite the system using a ...