Browsing by Author "González, Bernardo"

Now showing 1 - 7 of 7
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    Biochemical and Genetic Bases of Indole-3-Acetic Acid (Auxin Phytohormone) Degradation by the Plant-Growth-Promoting Rhizobacterium Paraburkholderia phytofirmans PsJN
    (2017) Donoso, Raúl; Leiva Novoa, Pablo; Zúñiga, Ana; Timmermann, Tania; Recabarren Gajardo, Gonzalo; González, Bernardo
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    Covid-19 and city: Towards an integrated model of housing, microbiology, environment and urbanism
    (2021) Encinas Pino, Felipe; Soto Liebe, Katia; Aguirre Nuñez, Carlos;; González, Bernardo; Bustamante Gómez, Waldo; Schueftan, Alejandra; Ugalde, Juan; Blondel, Carlos; Truffello Robledo, Ricardo; Araya, Paz; Freed Huici, Carmen Marcela; CEDEUS (Chile)
    As of May 2020, the global health crisis caused by the SARS-CoV-2 virus moves its epicentre to Latin America, with cities showing high rates of poverty, segregation, and overcrowding. Current advances in microbiology make it possible to understand in depth the relationships between cities, COVID-19, and other microorganisms, but a conceptual framework to articulate them is lacking, especially in contexts where social determinants are so relevant. This article proposes an integrated approach to microbiology, housing, environment, and urbanism, based on a model of interactions and an empirical analysis applied to Santiago de Chile. It was possible to analyse how the propagation of COVID-19 in the city is enhanced by vulnerabilities of socio-spatial, residential and urban health, including an approach from the concept of energy poverty. At the same time, it was possible to verify how the variables associated with these vulnerabilities allowed to explain the incidence rate per 100 000 inhabitants through the different communes of Santiago de Chile. Among these, the level of housing overcrowding, the number of households with heads of household in precarious employment, and travel to the central business district stand out. Finally, the need for microbiological sampling to improve housing conditions, neighbourhoods, and cities propose a new research agenda for this Urban Microbiome" multidisciplinary team, contributing to overcoming the vulnerabilities identified in this research.
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    COVID-19 y ciudad: hacia un modelo integrado de vivienda, microbiología, ambiente y urbanismo
    (Universitat Politecnica de Catalunya, 2021) Encinas Pino, Felipe; Soto-Liebe, Katia; Aguirre Núñez, Carlos Andrés; González, Bernardo; Bustamante, Waldo; Schueftan, Alejandra; Ugalde, Juan; Blondel, Carlos; Truffello, Ricardo; Araya, Paz; Freed, Carmen; CEDEUS (Chile)
    © 2021, Universitat Politecnica de Catalunya. All rights reserved.As of May 2020, the global health crisis caused by the SARS-CoV-2 virus moves its epicentre to Latin America, with cities showing high rates of poverty, segregation, and overcrowding. Current advances in microbiology make it possible to understand in depth the relationships between cities, COVID-19, and other microorganisms, but a conceptual framework to articulate them is lacking, especially in contexts where social determinants are so relevant. This article proposes an integrated approach to microbiology, housing, environment, and urbanism, based on a model of interactions and an empirical analysis applied to Santiago de Chile. It was possible to analyse how the propagation of COVID-19 in the city is enhanced by vulnerabilities of socio-spatial, residential and urban health, including an approach from the concept of energy poverty. At the same time, it was possible to verify how the variables associated with these vulnerabilities allowed to explain the incidence rate per 100 000 inhabitants through the different communes of Santiago de Chile. Among these, the level of housing overcrowding, the number of households with heads of household in precarious employment, and travel to the central business district stand out. Finally, the need for microbiological sampling to improve housing conditions, neighbourhoods, and cities propose a new research agenda for this Urban Microbiome" multidisciplinary team, contributing to overcoming the vulnerabilities identified in this research.
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    Effects of the Plant Growth-Promoting Bacterium Burkholderia phytofirmans PsJN throughout the Life Cycle of Arabidopsis thaliana
    (2013) Poupin Swinburn, María Josefina; Timmermann, Tania; Vega C., Andrea; Zuñiga, Ana; González, Bernardo
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    Hierarchy of Carbon Source Utilization in Soil Bacteria: Hegemonic Preference for Benzoate in Complex Aromatic Compound Mixtures Degraded by Cupriavidus pinatubonensis Strain JMP134
    (2015) Pérez-Pantoja, Danilo; Leiva-Novoa, Pablo; Donoso, Raúl A.; Little Orellana, Cedric; Godoy, Margarita; Pieper, Dietmar H.; González, Bernardo
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    Nitrate increases the capacity of an aerobic moving-bed biofilm reactor (MBBR) for winery wastewater treatment
    (2024) Walker Huyghe, Patricio Alejandro; Nerenberg, Robert ; Pizarro Puccio, Gonzalo Ernesto; Aybar, Marcelo ; Pavissich, Juan Pablo ; González, Bernardo ; Pasten González, Pablo Arturo; CEDEUS (Chile)
    We used bench-scale tests and mathematical modeling to explore chemical oxygen demand (COD) removal rates in a moving-bed biofilm reactor (MBBR) for winery wastewater treatment, using either urea or nitrate as a nitrogen source. With urea addition, the COD removal f luxes ranged from 34 to 45 gCOD/m2-d. However, when nitratewas added, fluxes increased up to 65 gCOD/m2-d, twice the amount reported for aerobic biofilms for winery wastewater treatment. A one-dimensional biofilm model, calibrated with data from respirometric tests, accurately captured the experimental results. Both experimental and modelling results suggest that nitrate significantly increased MBBR capacity by stimulating COD oxidation in the deeper, oxygen-limited regions of the biofilm. Our research suggests that the addition of nitrate, or other energetic and broadly used electron acceptors, may provide a cost-effective means of covering peak COD loads in biofilm processes for winery or another industrial wastewater treatment.