Browsing by Author "Retamal, J."
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- ItemAtenolol versus propranolol for the treatment of infantile hemangiomas : a randomized controlled study(2014) Abarzúa, Alvaro; Navarrete Dechent, Cristián Patricio; Heusser Risopatron, Felipe; Retamal, J.; Zegpi Trueba, María Soledad
- ItemEvaluation of ZAR1 and SFRP4 methylation status as potentials biomarkers for diagnosis in cervical cancer : exploratory study phase I(2014) Brebi, P.; Hoffstetter, R.; Andana, A.; Ili, C.G.; Saavedra, K.; Viscarra, T.; Retamal, J.; Sanchez, R.; Roa Strauch, Juan Carlos Enrique
- ItemFrecuencia de Virus Papiloma Humano en Tumores no Ginecológicos de la Región de la Araucanía, Chile(2014) Hoffstetter, R.; Andana, A.; Guzman, P.; Ili, C.; Retamal, J.; Mora, B.; Roa Strauch, Juan Carlos Enrique; Sanchez, R.
- ItemInfection in Health Personnel with High and Low Levels of Exposure in a Hospital Setting during the H1N1 2009 Influenza A Pandemic(2016) Sandoval, C.; Barrera Vásquez, Aldo Vincent; Ferrés Garrido, Marcela Viviana; Retamal, J.; García-Sastre A.; Medina, Rafael; Hirsch Birn, Tamara
- ItemNatamycin versus voriconazole for fungal keratitis(2018) Retamal, J.; Ordenes-Cavieres, G.; Grau Diez, Arturo Eduardo
- ItemPositive end-expiratory pressure increases strain in patients with ALI/ARDS(2011) Bugedo Tarraza, Guillermo; Bruhn, Alejandro; Regueira Heskia, Tomás; Romero, C.; Retamal, J.; Hernández P., GlennThe study aimed to evaluate a methodology to quantify the porosity of the soil using computed tomography in areas under no-tillage, conventional tillage and native forest. Three soil management systems were selected for the study: forest, conventional tillage and no-tillage. In each soil management system, undisturbed soil samples were collected in the surface layer (0.0 to 0.10 m). The tomographic images were obtained using a X-ray microtomography. After obtaining the images, they were processed, and a methodology was evaluated for image conversion into numerical values. The statistical method which provided the greatest accuracy was the percentile method. The methodology used to analyze the tomographic image allowed quantifying the porosity of the soil under different soil management. The method enabled the characterization of soil porosity in a non-evasive and non-destructive way.