Now showing items 141-160 of 4968

    • Rojas, Pablo; Castro, Sergio A.; Vila Pinto, Irma del Carmen; Jaksic Andrade, Fabian Miguel (Elsevier, 2021)
      In the freshwater basins of central Chile, 28 exotic species have been introduced, which have contributed to increase taxonomic diversity. Nevertheless, how these species have modified the components of functional ...
    • Martínez Bellange, Patricio; Von Bernath, Diego; Navarro, Claudio A.; Jerez Guevara, Carlos Antonio (Wiley, 2022)
    • Zenteno Quinteros, Beatriz Antonia; Viñas, Adolfo; Moya Fuentes, Pablo Sebastián (IOP Publishing, 2021)
      Electron velocity distributions in the solar wind are known to have field-aligned skewness, which has been characterized by the presence of secondary populations such as the halo and strahl. Skewness may provide energy for ...
    • Soto Acuña, Sergio Gonzalo; Vargas Milne, Alexander Omar; Kaluza, Jonatan; Leppe, Marcelo A.; Botelho, Joao Francisco; Palma Liberona, José Antonio; Gutstein, Carolina; Fernández, Roy; Ortiz, Héctor; Milla, Verónica; Aravena, Bárbara; Manríquez, Leslie; Alarcón Muñoz, Jhonatan; Pino, Juan Pablo; Trevisan, Cristine; Mansilla, Héctor; Hinojosa Opazo, Luis Felipe Camilo; Muñoz Walther, Vicente; Rubilar Rogers, David Eliseo (Nature Research, 2021)
      Armoured dinosaurs are well known for their evolution of specialized tail weapons-paired tail spikes in stegosaurs and heavy tail clubs in advanced ankylosaurs(1). Armoured dinosaurs from southern Gondwana are rare and ...
    • Figuerola, Blanca; Valiente, Nicolás; Barbosa, Andrés; Brasier, Madeleine J.; Colominas Ciuro, Roger; Convey, Peter; Liggett, Daniela; Fernández Martínez, Miguel Ángel; González, Sergi; Griffiths, Huw J.; Jawak, Shridhar D.; Merican, Faradina; Noll, Daly; Prudencio, Janire; Quaglio, Fernanda; Pertierra, Luis R. (Frontiers Media, 2021)
      The polar regions provide valuable insights into the functioning of the Earth's regulating systems. Conducting field research in such harsh and remote environments requires strong international cooperation, extended planning ...
    • Horta Tricallotis, Helena; Echeverria Morgado, Javier; Peña Villalobos, Isaac Jonathan; Quirgas Barrera, Alethia Gabriela; Vidal, Alejandra; Faundes, Wilfredo; Pacheco, Aryel (Universidad Católica del Norte, Chile, 2021)
      This work presents the results of a multidisciplinary research focused on the contextual study of the grave goods of six pre-Hispanic cemeteries of the San Pedro de Atacama oasis, Antofagasta Region, Chile. The main objective ...
    • Izquierdo, Diego; Lucchini Arteche, Giancarlo Antonio (Walter de Gruyter GMBH, 2021)
      In this article, we study the obstructions to the local-global principle for homogeneous spaces with connected or abelian stabilizers over finite extensions of the field C ((x; y)) of Laurent series in two variables over ...
    • Robles Navarro, Andrés; Cárdenas Castro, Carlos Patricio; Fuentealba Rosas, Patricio Armando (MDPI, 2021)
      The electronegativity concept was first formulated by Pauling in the first half of the 20th century to explain quantitatively the properties of chemical bonds between different types of atoms. Today, it is widely known ...
    • Navarrete, Lucas; Bozinovic Kuscevic, Francisco Esteban; Peña Villalobos, Isaac Jonathan; Contreras Ramos, Carolina Isabel; Sánchez Hernández, Juan C.; Newsome, Seth D.; Nespolo, Roberto F.; Sabat Kirkwood, Alejandro Pablo (Frontiers Media SA, 2021)
      Predictions indicate that birds worldwide will be affected by global warming and extreme climatic events which is especially relevant for passerines because the diurnal habits, small body size, and high mass-adjusted ...
    • Asenjo, Felipe A.; Hojman Guinerman, Sergio Andrés (Springer, 2021)
      It is showed that complex scalar fields with a self-interaction potential may propagate along null geodesics on isotropic flat Friedmann-Lemaitre-Robertson-Walker universes with different time-dependent scale factors. This ...
    • Peña Villalobos, Isaac Jonathan; Otárola, Fabiola A.; Casas, Bárbara S.; Sabat Opazo, Pablo Enrique; Palma Alvarado, Verónica Alejandra (Frontiers Media, 2021)
      Variations in the availability of nutritional resources in animals can trigger reversible adjustments, which in the short term are manifested as behavioral and physiological changes. Several of these responses are mediated ...
    • Miranda, Rodrigo A.; Valdivia Hepp, Juan Alejandro; Chian, Abraham; Muñoz, Pablo R. (IOP, 2021)
      Magnetic reconnection is a complex mechanism that converts magnetic energy into particle kinetic energy and plasma thermal energy in space and astrophysical plasmas. In addition, magnetic reconnection and turbulence appear ...
    • Espinoza Vergara, Javier; Molina, Paulo; Walter, Mariana; Gulppi, Miguel; Vejar, Nelson; Melo, Francisco; Urzúa Acevedo, Marcela del Pilar; Muñoz, Hugo; Zagal, José H.; Zhou, Xiaorong; Azocar, Manuel I.; Páez, Maritza A. (Frontiers Media, 2021)
      The influence of pH on the electrochemical behavior of hydrogen peroxide in the presence of Pseudomonas aeruginosa was investigated using electrochemical techniques. Cyclic and square wave voltammetry were used to monitor ...
    • Soto Eguibar, Francisco; Asenjo, Felipe A.; Hojman Guiñerman, Sergio; Moya Cessa, Héctor (Amer Inst Physics, 2021)
      In the Madelung-Bohm approach to quantum mechanics, we consider a time dependent phase that depends quadratically on position, and we show that it leads to a Bohm potential that corresponds to a time dependent harmonic ...
    • Moreno, Mabel; Arredondo, Miryam; Ramasse, Quentin M.; McLaren, Matthew; Stötzner, Philine; Förster, Stefan; Benavente, Eglantina; Salgado, Caterina; Devis, Sindy; Solar, Paula; Velásquez, Luis; González Moraga, Guillermo Antonio (Nature, 2021)
      In this contribution, we explore the potential of atomic layer deposition (ALD) techniques for developing new semiconductor metal oxide composites. Specifically, we investigate the functionalization of multi-wall trititanate ...
    • Carver, Steve; Convery, Ian; Hawkins, Sally; Beyers, Rene; Eagle, Adam; Kun, Zoltan; Van Maanen, Erwin; Cao, Yue; Fisher, Mark; Edwards, Stephen R.; Nelson, Cara; Gann, George D.; Shurter, Steve; Aguilar, Karina; Andrade, Angela; Ripple, William J.; Davis, John; Sinclair, Anthony; Bekoff, Marc; Noss, Reed; Foreman, Dave; Pettersson, Hanna; Root-Bernstein, Meredith; Svenning, Jens Christian; Taylor, Peter; Wynne Jones, Sophie; Featherstone, Alan Watson; Fløjgaard, Camilla; Stanley Price, Mark; Navarro, Laetitia M.; Aykroyd, Toby; Parfitt, Alison; Soulé, Michael (Wiley, 2021)
      There has been much recent interest in the concept of rewilding as a tool for nature conservation, but also confusion over the idea, which has limited its utility.We developed a unifying definition and 10 guiding principles ...
    • Kraft Gutiérrez, Sebastián Martín; Pérez Álvarez, María José; Olavarría, Carlos; Moraga, Rodrigo; Baker, C. Scott; Steel, Debbie; Tixier, Paul; Guinet, Christophe; Viricel, Amelia; Brickle, Paul; Costa, Marina; Crespo, Enrique; Durante, Cristian; Loizaga, Rocío; Poulin, Elie Albert (Frontiers Media, 2021)
      Commerson's dolphins (Cephalorhynchus commersonii) are separated into the subspecies C. c. commersonii, found along southern South America (SA) and the Falkland Islands/Islas Malvinas (FI/IM), and C. c. kerguelenensis, ...
    • Martínez González, María Alejandrina; Peña Rodríguez, Luis Manuel; Uc-Cachón, Andrés Humberto; Bórquez, Jorge; Simirgiotis, Mario J.; Barrios García, Hugo Brígido; Hernández Pando, Rogelio; Loyola, Luis Alberto; Areche Medina, Carlos Alberto; Dzul-Beh, Ángel de Jesús; Barrios Payan, Jorge Alberto; Mata Espinosa, Dulce; Escalante Erosa, Fabiola; García Sosa, Karlina; Molina Salinas, Gloria María (MDPI, 2021)
      Tuberculosis causes more than 1.2 million deaths each year. Worldwide, it is the first cause of death by a single infectious agent. The emergence of drug-resistant strains has limited pharmacological treatment of the ...
    • Rojas, Bárbara; Suárez Vega, Felipe; Sáez Aguayo, Susana; Olmedo, Patricio; Zepeda, Baltasar; Delgado Rioseco, Joaquín; Defilippi, Bruno G.; Pedreschi, Romina; Meneses, Claudio; Pérez Donoso, Alonso; Campos Vargas, Reinaldo Ismael (MDPI, 2021)
      The use of plant growth regulators (PGRs) is widespread in commercial table grape vineyards. The synthetic cytokinin CPPU is a PGR that is extensively used to obtain higher quality grapes. However, the effect of CPPU on ...
    • Gudenschwager Ruiz, Camila Andrea; Chávez, Isadora; Cárdenas, César; González Billault, Christian Enrique (Hindawi, 2021)
      Brain aging is characterized by several molecular and cellular changes grouped as the hallmarks or pillars of aging, including organelle dysfunction, metabolic and nutrition-sensor changes, stem cell attrition, and ...