Now showing items 810-829 of 6977

    • 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 ...
    • 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 ...
    • Di Pillo, Francisca; Anríquez, Gustavo; Alarcón, Pablo; Jiménez Bluhm, Pedro; Galdames, Pablo; Nieto, Vanesa; Schultz-Cherry, Stacey; Hamilton-West Miranda, Christopher (Elsevier B.V., 2019)
      Backyard production systems (BPS) that involve poultry are a good way to improve food security and poverty alleviation. Few studies have been carried out to quantify the contribution of poultry production to these households ...
    • Ramos, Gabriel; Cordero Garayar, María Luisa; Soto Bertrán, Rodrigo (Royal Society of Chemistry, 2020)
      We confine a dense suspension of motileEscherichia coliinside a spherical droplet in a water-in-oil emulsion, creating a "bacterially" propelled droplet. We show that droplets move in a persistent random walk, with a ...
    • Fernández Gómez, Beatriz; Maldonado, Jonathan; Mandakovic, Dinka; Gaete, Alexis; Gutiérrez, Rodrigo A.; Maass Sepúlveda, Alejandro; Cambiazo, Veronica; González, Mauricio (Nature Publishing Group, 2019)
      The rhizosphere is considered the primary place for soil microbiome differentiation and plays a key role in plant survival, especially for those subjected to environmental stress. Using high-throughput sequencing of the ...
    • Aguilar, Pablo; Dorador, Cristina; Vila Pinto, Irma; Sommaruga, Ruben (Frontiers Media S.A., 2019)
      Copyright © 2019 Aguilar, Dorador, Vila and Sommaruga.Species of the genus Nostoc (Cyanobacteria) can form large colonies of up to several centimeters in diameter that may represent a unique habitat for bacteria in ...
    • Fernández-Gómez, Beatriz; Díez, Beatriz; Polz, Martin F.; Arroyo, José Ignacio; Alfaro, Fernando D.; Marchandon, Germán; Sanhueza, Cynthia; Farías, Laura; Trefault, Nicole; Marquet, Pablo A.; Molina-Montenegro, Marco A.; Sylvander, Peter; Snoeijs-Leijonmalm, Pauline (Nature Publishing Group, 2019)
      © 2018, International Society for Microbial Ecology.Larger volumes of sea ice have been thawing in the Central Arctic Ocean (CAO) during the last decades than during the past 800,000 years. Brackish brine (fed by meltwater ...
    • Dorador, Cristina; Castillo, Gabriela; Witzel, Karl-Paul; Vila Pinto, 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 ...
    • Meruane, Gabriel; Vargas Valero, Tomás (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 ...
    • Hernandez, P.; Sager, B.; Fa, A.; Liang, T.; Lozano, C.; Khazzam, M. (British Editorial Society of Bone and Joint Surgery, 2019)
      The purpose of this study was to examine the bactericidal efficacy of hydrogen peroxide (H 2 o 2 ) on Cutibacterium acnes (C. acnes). We hypothesize that H 2 o 2 reduces the bacterial burden of C. acnes. Methods The effect ...
    • Artetxe, Arkaitz; Graña, Manuel; Beristain, Andoni; Ríos Pérez, Sebastián (Springer, 2020)
      Dealing with imbalanced datasets is a recurrent issue in health-care data processing. Most literature deals with small academic datasets, so that results often do not extrapolate to the large real-life datasets, or have ...
    • Contreras, Felipe; Hitschfeld Kahler, Nancy; Bastarrica Piñeyro, María Cecilia; Lillo, Carlos (ELSEVIER, 2010)
      It is generally thought within the meshing tool community that object-orientation and other decoupling techniques penalize performance when they are used for building concrete meshing tools. In this paper we show that ...
    • Morata Céspedes, Diego; Oliva, Claudia; Cruz, Rita de la; Suárez Dittus, Manuel (PERGAMON-ELSEVIER SCIENCE, 2005-01)
      The authors present petrological and geochemical data for the Late Oligocene (ca. 27 Ma) Bandurrias gabbro, a small (approximate to 4.5 x 3 km), isolated intrusion near Coyhaique (45degrees35' Lat. S), southern Chile, in ...
    • Constant, Benjamin; Garzon, Cristhian; Nisar, Muhammad; Bohrz Nachtigall, Sônia Marlí; Quijada Abarca, Juan; Méndez, Rodrigo (Elsevier, 2017)
      In this study, polycaprolactam (PA6) nanocomposites with thermally reduced graphene oxide (TrGO) and carbon nanotubes (CNTs) were prepared by melt blending with the aim of obtaining films with improvements in permeability ...
    • Méndez, Rodrigo; Constant, Benjamín; Garzón, Cristhian; Nisar, Muhammad; Nachtigall, Sônia Marlí Bohrz; Quijada Abarca, Juan (Elsevier, 2017)
      In this study, polycaprolactam (PA6) nanocomposites with thermally reduced graphene oxide (TrGO) and carbon nanotubes (CNTs) were prepared by melt blending with the aim of obtaining films with improvements in permeability ...
    • Busca, N. G.; Delubac, T.; Rich, J.; Bailey, S.; Font Ribera, A.; Kirkby, D.; Le Goff, J. M.; Pieri, M. M.; Slosar, A.; Aubourg, É.; Bautista, J. E.; Bizyaev, D.; Blomqvist, M.; Bolton, A. S.; Bovy, J.; Brewington, H.; Borde, A.; Brinkmann, J.; Carithers, B.; Croft, R. A. C.; Dawson, K. S.; Ebelke, G.; Eisenstein, D. J.; Hamilton, J. C.; Ho, S.; Hogg, D. W.; Honscheid, K.; Lee, K. G.; Lundgren, B.; Malanushenko, E.; Malanushenko, V.; Margala, D.; Maraston, C.; Mehta, K.; Miralda Escudé, J.; Myers, A. D.; Nichol, R. C.; Noterdaeme, P.; Olmstead, M. D.; Oravetz, D.; Palanque-Delabrouille, Nathalie; Pan, K.; Pâris, I.; Percival, W. J.; Petitjean, P.; Roe, N. A.; Rollinde, E.; Ross, N. P.; Rossi, G.; Schlegel, D. J.; Schneider, D. P.; Shelden, A.; Sheldon, E. S.; Simmons, A.; Snedden, S.; Tinker, J. L.; Viel, M.; Weaver, B. A.; Weinberg, D. H.; White, M.; Yèche, C.; York, D. G. (EDP Sciences, 2013)
      We report a detection of the baryon acoustic oscillation (BAO) feature in the three-dimensional correlation function of the transmitted flux fraction in the Lyα forest of high-redshift quasars. The study uses 48 640 quasars ...
    • Bangs, Nathan L.; Morgan, J. K.; Trehu, A. M.; Contreras Reyes, E.; Arnulf, A.F.; Han, S.; Olsen, K. M.; Zhang, E. (American Geophysical Union, 2020)
      The south central Chilean margin regularly produces many of the world's largest earthquakes and tsunami, including the 2010 Mw 8.8 Maule and 1960 Mw 9.5 Valdivia events. In 2017, we acquired seismic reflection data along ...
    • Hickey Vargas, Rosemary; Holbik, Sven; Tormey, Daniel; Frey, Frederick; Moreno Roa, Hugo (Elsevier, 2016)
      The origin of spatial variations in the geochemical characteristics of volcanic rocks erupted in the Andean Southern Volcanic Zone (SVZ) has been studied by numerous researchers over the past 40 years. Diverse interpretations ...
    • Baume, Gustavo; Noel, Noelia E. D.; Costa Hechenleitner, Edgardo; Carraro, Giovanni; Méndez Bussard, René Alejandro; Pedreros, M. H. (BLACKWELL, 2008-11-11)
      We present observations for three star clusters, Kron 11, Kron 63 and NGC 121, in the Small Magellanic Cloud. We have studied their structure and derived their fundamental parameters by means of their luminosity functions, ...
    • Engel Goetz, Eduardo; Fischer Barkan, Ronald; Galetovic Potsch, Alexander (European Economic Association, 2013-02)
      Publicprivate partnerships (PPPs) have been justified because they release public funds or save on distortionary taxes. However, the resources saved by a government that does not finance the upfront investment are offset ...