Repositorio Académico de la Universidad de Chile: Recent submissions

Now showing items 29741-29760 of 101786

    • Partial-AZFc deletions in Chilean men with primary spermatogenic impairment: gene dosage and Y-chromosome ... 
      Lardone, María Cecilia; Ortega, Victoria; Ortiz, Eliana; Flórez, M.; Piottante, Antonio; Ebensperger, Mauricio; Flores, Sandra; Pezo, Patricio; Orellana, Michael; Moraga, Mauricio; Castro, Andrea (Springer, 2020)
      Purpose To investigate the association of partial-AZFc deletions in Chilean men with primary spermatogenic failure and their testicular histopathological phenotypes, analyzing the contribution ofDAZdosage,CDY1copies, and ...
    • Mid-term follow-up of balloon pulmonary angioplasty for inoperable chronic thromboembolic pulmonary ... 
      Sepúlveda, Pablo; Hameau, René; Backhouse, Christian; Charme, Gustavo; Pacheco, Francisco; Ramírez, Pablo A.; Fuensalida, Alberto J.; Quitral, Jorge; Martínez, Gonzalo; Martínez, José A. (Wiley, 2020)
      Objectives To describe the characteristics of patients who undergo balloon pulmonary angioplasty (BPA) for inoperable chronic thromboembolic pulmonary hypertension (CTEPH) and report the mid-term outcomes. Background BPA ...
    • A new decision making method using interval-valued intuitionistic fuzzy cosine similarity measure based on ... 
      Verma, Rajkumar; Merigó Lindahl, José (Institute of Mathematics and Informatics of Vilnius University, 2020)
      In this paper, we develop a new flexible method for interval-valued intuitionistic fuzzy decision-making problems with cosine similarity measure. We first introduce the interval-valued intuitionistic fuzzy cosine similarity ...
    • A model for germanium-silicon equilibrium fractionation in kaolinite 
      Pérez Fodich, Alida; Derry, Louis A. (Elsevier, 2020)
      Germanium is a useful tracer of silicate weathering and secondary mineral formation in the Critical Zone because Ge/Si ratios are fractionated during incongruent weathering of silicates. We develop an estimate of the ...
    • A Continuum from Iron Oxide Copper-Gold to Iron Oxide-Apatite Deposits: Evidence from Fe and O Stable ... 
      Rodríguez Mustafa, María A.; Simon, Adam C.; Real Contreras, Irene del; Thompson, John F.H.; Bilenker, Laura D.; Barra Pantoja, Fernando; Bindeman, Ilya (Society of Economic Geologists (SEG), 2020)
      Iron oxide copper-gold (IOCG) and iron oxide-apatite (IOA) deposits are major sources of Fe, Cu, and Au. Magnetite is the modally dominant and commodity mineral in IOA deposits, whereas magnetite and hematite are predominant ...
    • A country's response to tackling plastic pollution in aquatic ecosystems: The Chilean way 
      Urbina, M. A.; Luna Jorquera, G.; Thiel, M.; Acuña Ruz, T.; Amenábar Cristi, María; Andrade, C.; Ahrendt, C.; Castillo, C.; Chevallier, A.; Cornejo D'Ottone, M.; Correa Araneda, F.; Duarte, C.; Fernández, C.; Galbán Malagón, C.; Godoy, C.; González Aravena, M.; Hinojosa, I. A.; Jorquera, A.; Kiessling, T.; Lardies, M. A.; Lenzi, J.; Mattar, C.; Munizaga, M.; Olguín Campillay, N.; Pérez Venegas, D. J.; Portflitt Toro, M.; Pozo, K.; Pulgar, J.; Vargas, E. (Wiley, 2020)
      Marine plastic pollution is worse than expected, and we are starting to realize its full extent and severity. Solving the plastic pollution problem is not easy, as it requires the action and commitment of all sectors of ...
    • Nanomineral imogolita como fase ecosorbente para la extracción de 7β-Estradiol en agua 
      Orellana Garay, Catalina (Universidad de Chile, 2020)
      El creciente interés por el uso de materiales que generen el menor impacto al medio ambiente y que permitan versatilidad en su uso, han hecho que las nanoarcillas sean una opción altamente viable, gracias a sus propiedades ...
    • Zinc Supplementation and Strength Exercise in Rats with Type 2 Diabetes: Akt and PTP1B Phosphorylation in ... 
      Vivero, Ariel; Ruz Ortiz, Manuel; Rivera, Matías; Miranda, Karen; Sacristán, Camila; Espinosa, Alejandra; Codoceo, Juana; Inostroza Escobar, Jorge; Vásquez, Karla; Pérez Bazán, Álvaro; García Díaz, Diego; Arredondo Olguín, Miguel (Springer, 2020)
      Type 2 diabetes mellitus (T2D) is a metabolic disorder caused by chronic hyperglycemia due to a deficiency in the secretion and/or action of insulin. Zinc (Zn) supplementation and strength exercise increases insulin ...
    • Free radicals derived from γ-radiolysis of water and AAPH thermolysis mediate oxidative crosslinking of ... 
      Zamora, Ricardo A.; Fuentes Lemus, Eduardo; Barrias, Pablo; Herrera Morandé, Alejandra; Mura, Francisco; Guixé, Victoria; Castro Fernández, Víctor; Rojas, Tomás; López Alarcón, Camilo; Aguirre, Paulina; Rivas Aravena, Andrea; Aspée, Alexis (Elsevier, 2020)
      The enhanced green fluorescent protein (eGFP) is one of the most employed variants of fluorescent proteins. Nonetheless little is known about the oxidative modifications that this protein can undergo in the cellular ...
    • Análisis exploratorio de modelos de aprendizaje de máquinas para la estimación del tiempo de vida remanente ... 
      Beltrán Carvajal, Agustín Eliseo (Universidad de Chile, 2020)
      En el campo de la industria y el mantenimiento, nos podemos encontrar con fallas cuyo origen o desarrollo es desconocido, o bien de las que no se cuenta con la información suficiente para diagnosticar o tratar dicha falla. ...
    • Neotectonics and seismic source characterization in the Central High Andes, near Chile's capital Santiago 
      Araya Zuleta, José Antonio (Universidad de Chile, 2020)
      La región metropolitana de Santiago contiene una población de más de 7 millones de habitantes, siendo el área más poblada de Chile. En este segmento del orógeno Andino, importante sismicidad cortical y evidencias de ...
    • Análisis técnico económico de la industria del salitre y yodo en Chile 
      Hildebrandt Banse, Jorge Carlos Roberto (Universidad de Chile, 2020)
      El presente trabajo de título trata de la industria chilena del Yodo y colateralmente del Nitrato, área en la que el autor participó desde mediados del año 2010 hasta mediados del 2011 como encargado de todas las obras de ...
    • Plataforma de monitoreo y pronóstico de impacto de enfermedades infecciosas en la sociedad 
      Rojas Salinas, Pablo Andrés (Universidad de Chile, 2020-10)
      Las enfermedades infecciosas (E.I.) suponen un riesgo sanitario latente y creciente para los pr oximos a~nos, debido a los factores socioambientales actuales. Sin embargo, ante la emergencia de un nuevo agente infeccioso ...
    • Spectral theory of the thermal Hamiltonian 
      Lenz Burnier, Vicente (Universidad de Chile, 2020-07)
      Se estudiar´a el operador HT , llamado el Hamiltoniano Termal, originalmente propuesto por Luttinger para estudiar el efecto de un gradiente t´ermico en la materia. Primero le daremos definiciones rigurosas al inicialmente ...
    • Caracterización de la traducción IRES-dependiente del mRNA de Denguevirus; rol de la proteína PTB como ITAF 
      Fernández García, Leandro (Universidad de Chile, 2020)
      Denguevirus (DENV) es un virus envuelto, con genoma de RNA, simple hebra y polaridad positiva, que pertenece a la familia Flaviviridae. El mRNA viral tiene una estructura 5’ m7GpppN (cap), un sitio interno de reclutamiento ...
    • Eliciting Process Knowledge Through Process Stories 
      Antunes, Pedro; Pino Urtubia, José; Tate, Mary; Barros, Alistair (Springer, 2020)
      There are often gaps between the lived experiences of end users and the official version of processes as espoused by the organization. To understand and address these gaps, we propose and evaluate process stories, a method ...
    • Methodologically grounded semantic analysis of large volume of chilean medical literature data applied to ... 
      Wolff Rojas, Patricio; Ríos Pérez, Sebastián; Clavijo, David; Grana, Manuel; Carrasco, Miguel (BMC, 2020)
      Background Medical knowledge is accumulated in scientific research papers along time. In order to exploit this knowledge by automated systems, there is a growing interest in developing text mining methodologies to extract, ...
    • Electronic and optical properties of [Au(CH3CSS)](4)cluster. A quantum chemistry study 
      Mendizábal Emaldia, Fernando; Miranda Rojas, Sebastián (Royal Society of Chemistry, 2020)
      The uses of the sulfur-gold bond in the design of new molecular clusters have gained increasing attention in recent years. Their size and shape are diverse providing a wide variety of optical and electronic properties. ...
    • Ejaculation‑sparing thulium laser enucleation of the prostate (ES‑ThuLEP): outcomes on a large cohort 
      Bozzini, Giorgio; Berti, Lorenzo; Maltagliati, Matteo; Besana, Umberto; Calori, Alberto; Müller, Alexander; Sighinolfi, Maria Chiara; Micali, Salvatore; Pastore, Antonio Luigi; Ledezma Rojas, Rodrigo; Broggini, Paolo; Rocco, Bernardo; Buizza, Carlo (Springer, 2020)
      Purpose To assess the effects of a new ejaculation-sparing thulium laser enucleation of the prostate (ES-ThuLEP) technique on sexual functions and micturition, in patients with lower urinary tract symptoms secondary to ...
    • Effect of a Homemade Salivary Substitute Prepared Using Chamomile (Matricaria chamomilla L.) Flower and ... 
      Aitken Saavedra, Juan; Chaves Tarquinio, Sandra; De Oliveira da Rosa, Wellington Lui; Fernandes da Silva, Adriana; Almeida Machado, Bruna Macedo; Santos Castro, Ingrid; Oliveira Wennesheimer, Andressa; Morales Bozo, Irene; Uchoa Vasconcelos, Ana Carolina; Neutzling Gomes, Ana Paula (Mary Ann Liebert, 2020)
      Objectives:To evaluate (1) the effect of a salivary substitute prepared using chamomile (Matricaria chamomilla L.) flower and flax (Linum usitatissimum L.) seed to relieve Primary burning mouth syndrome (BMS) symptoms, (2) ...