Mostrando registros 4942-4961 de 50709

    • B modes and the sound speed of primordial fluctuations 

      Palma Quilodrán, Gonzalo; Soto, Alex (Amer Physical Soc, 2015)
      It was recently shown that a large value of the tensor to scalar ratio r implies a constraint on the minimum value of the sound speed c(s) of primordial curvature perturbations during inflation that is stronger than current ...
    • b-Coloring is NP-hard on Co-bipartite Graphs and Polytime Solvable on Tree-Cographs 

      Bonomo, Flavia; Schaudt, Oliver; Stein, Maya; Valencia Pabón, Mario (Springer, 2015)
      A b-coloring of a graph is a proper coloring such that every color class contains a vertex that is adjacent to all other color classes. The b-chromatic number of a graph , denoted by , is the maximum number such that admits ...
    • B-learning como Solución al Problema de Recursos Académicos Escasos en Educación Superior 

      Garrido Orrego, Ruth María Beatriz (Universidad de ChilePrograma Cybertesis, 2009)
    • B-TRIALS 

      Cuevas Arriagada, Ricardo Enrique; Páez Bustos, Neil William (Universidad de Chile, 2017-05)
      El presente trabajo desarrolla una idea de negocio llamada B-Trials, cuyo origen surge a partir de una necesidad específica en la ejecución de Estudios Clínicos de la Industria Farmacéutica local, que corresponde al ...
    • BABY HOME CARE 

      Bacovic Fanola, Milenka; Errázuriz Mackenna, María Isabel (Universidad de Chile, 2014-07)
      Una de las principales tareas como padres es el cuidado de los hijos. La llegada de un recién nacido al hogar es un momento muy importante, ya que requieren cuidados especiales y suelen ser muy demandantes en sus primeros ...
    • Bacilos Gram Negativos No Fastidiosos en la Microbiota Subgingival y Lingual en un Grupo de Pacientes Chilenos con Periodontitis 

      Gajardo, M.; Quintero, A.; Silva Steffens, Nora (Sociedad de Periodoncia de Chile, Sociedad de Implantología Oral de Chile y Sociedad, 2008)
      Antecedentes y objetivos: Las periodontitis son un grupo de patologías que afectan los tejidos de soporte del diente. Diferentes especies de la microbiota subgingival se han asociado con los tipos de periodontitis. El ...
    • Backyard farms represent a source of wide host range salmonella phages that lysed the most common salmonella serovars 

      Rivera, Dacil; Toledo, Viviana; Di Pillo, Francisca; Dueñas, Fernando; Tardone, Rodolfo; Hamilton-West Miranda, Christopher; Vongkamjan, Kitiya; Wiedmann, Martin; Moreno Switt, Andrea I. (International Association Food Protection, 2018)
      The genus Salmonella has more than 2,600 serovars, and this trait is important when considering interventions for Salmonella control. Bacteriophages that are used for biocontrol must have an exclusively lytic cycle and the ...
    • Bacon y Descartes: las bases filosóficas de la ciencia moderna 

      Palma Lohse, Emilio Eugenio (Universidad de Chile, 2010)
    • Bacterial cell division proteins as antibiotic targets 

      Monasterio Opazo, Octavio; Den Blaauwen, Tanneke; Andreu, José M. (Elsevier, 2014)
      Proteins involved in bacterial cell division often do not have a counterpart in eukaryotic cells and they are essential for the survival of the bacteria. The genetic accessibility of many bacterial species in combination with ...
    • Bacterial diversity and occurrence of ammonia-oxidizing bacteria in the Atacama Desert soil during a "desert bloom" event 

      Carú Marambio, Margarita; Alfaro, Marco; Bravo, Lorena; Guevara, Rafael; Orlando, Julieta Laura (PERGAMON-ELSEVIER SCIENCE LTD, 2010-04-08)
      The Atacama Desert, located in northern Chile, is one of the driest deserts on the Earth. However, in some years, short and sporadic rainfall in the southern end of this desert has increased the soil moisture that produces ...
    • Bacterial diversity in the sediments of a temperate artificial lake, Rapel reservoir 

      Dorador, Cristina; Castillo, Gabriela; Witzel, Karl-Paul; Vila, Irma (2007)
      Rape] reservoir is an eutrophic system in Chile that has undergone a series of anthropogenic impacts in recent decades. To provide a better understanding of the processes occurring in the reservoir, we examined bacterial ...
    • Bacterial diversity in the sediments of a temperate artificial lake, Rapel reservoir 

      Dorador, Cristina; Castillo, Gabriela; Witzel, Karl-Paul; Vila, Irma (2007)
      Rape] reservoir is an eutrophic system in Chile that has undergone a series of anthropogenic impacts in recent decades. To provide a better understanding of the processes occurring in the reservoir, we examined bacterial ...
    • Bacterial oxidation of ferrous iron by Acidithiobacillus ferrooxidans in the pH range 2.5-7.0 

      Meruane, Gabriel; Vargas Valero, José (ELSEVIER, 2003-10)
      The oxidation of ferrous iron by Acidithiobacillus ferrooxidans in the pH range 2.5-7.0 was characterized. In order to measure the rate of bacterial oxidation of ferrous iron with A. ferrooxidans in this high pH range, a ...
    • Bacterial tubulins A and B exhibit polarized growth, mixed-polarity bundling, and destabilization by GTP hydrolysis 

      Díaz Celis, Cesar; Risca, Viviana I.; González Hurtado, Felipe Adolfo; Polka, Jessica K.; Hansen, Scott D; Maturana, Daniel; Lagos Monaco, Rosalba; Mullins, R. Dyche; Monasterio Opazo, Octavio (American Society for Microbiology, 2017)
      Bacteria of the genus Prosthecobacter express homologs of eukaryotic alpha- and beta-tubulin, called BtubA and BtubB (BtubA/B), that have been observed to assemble into filaments in the presence of GTP. BtubA/B polymers ...
    • Bacteriemia por Neisseria subflava en un recién nacido 

      Rivacoba Rojas, María Carolina; Izquierdo Copiz, Giannina; Zenteno, Natalia; Porte, Lorena (Sociedad Chilena de Infectología, 2017)
      Neisseria subflava belongs to Neisseriaceae family, is considered a comensal specie, however in certain host, mainly inmunosuppresed patientes and children, the literature has documented invasive infections. We present ...
    • Bacteriemia primaria por Listeria monocytogenes en paciente con cirrosis hepática. Caso clínico 

      Chanqueo C., Leonardo; Gutiérrez R., Catalina; Armas M., Rodolfo; Urriola Jofré, Gabriela; Bustos M., Marisol; Tapia Paredes, Cecilia; Vásquez T., Patricia (SOC MEDICA SANTIAGO, 2008-02)
      L.monocytogenes infections are infrequent. Sepsis in pregnant women and newborns and central nervous system infections in the elderly are the most common clinical manifestations. We report a 61 years old woman with diabetes ...
    • Bacteriophage Treatment Reduces Salmonella Colonization of Infected Chickens 

      Borie Polanco, Consuelo; Albala, Isabel; Sánchez, Pilar; Retamales Aranda, Julio; Sánchez, María Luisa; Ramírez, S.; Morales, María Angélica; Navarro Venegas, Carlos; Robeson, James (AMER ASSOC AVIAN PATHOLOGISTS, 2008-03)
      Three different lytic bacteriophages (BPs) were isolated from the sewage system of commercial chicken flocks and used to reduce Salmonella Enteritidis (SE) colonization from experimental chickens. Ten-day-old chickens ...
    • Bacteriophages in the control of pathogenic vibrios 

      Plaza, Nicolás; Castillo, Daniel; Pérez Reytor, Diliana; Higuera Guajardo, Gastón; García, Katherine; Bastias, Roberto (Universidad Católica de Valparaíso, 2018)
      Vibrios are common inhabitants of marine and estuarine environments. Some of them can be pathogenic to humans and/or marine animals using a broad repertory of virulence factors. Lately, several reports have indicated that ...
    • Bacterioplankton composition in tropical high elevation lakes of the Andean plateau 

      Aguilar, Pablo; Dorador, Cristina; Vila Pinto, Irma; Sommaruga, Ruben (Oxford University Press, 2018)
      High-elevation lakes in the tropics are subject to extreme environmental fluctuations and microbes may harbor a unique genomic repertoire, but their composition and diversity are largely unknown. Here, we compared the ...
    • Bacteriófagos líticos como agentes biológicos que reducen la carga de Salmonella enterica Serotipo Enteritidis en carne fresca de pollo experimentalmente contaminada 

      Cruz Castillo, Fabiola Alejandra (Universidad de Chile, 2013)
      Las enfermedades transmitidas por alimentos, provocadas por el género Salmonella spp, son un importante problema de salud pública a nivel mundial, siendo el serotipo Salmonella Enteritidis (SE) uno de los principales ...