Mostrando ítems 3621-3640 de 7967

    • Tuning the structure and magnetic behavior of Ni-Ir-based nanoparticles in ionic liquids 

      Abarca, Gabriel [Univ Mayor, Fac Ciencias, Ctr Nanotecnol Aplicada]; da Silva, Kacris I. M.; Bernardi, Fabiano; Baptista, Daniel L.; Leite Santos, Marcos José; Fernández Barquin, Luis; Dupont, Jairton; de Pedro, Imanol (ROYAL SOC CHEMISTRY, 2018)
      We report on a simple preparation of extremely small diameter (ca. 2 nm) Ni-Ir-based NPs using Ni(COD)(2) and [Ir(COD)OCH3](2) in 1-butyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide (BMImNTf(2)). The prepared NPs ...
    • Toward Controlled Morphology of FeCu Nanoparticles: Cu Concentration and Size Effects 

      González, Rafael I. [Univ Mayor, Fac Ciencias, Ctr Nanotecnol Aplicada, Santiago, Chile]; Rojas-Nuñez, Javier; Bringa, Eduardo M.; Allende, Sebastián; Sepulveda, Pamela; Arancibia-Miranda, Nicolás; Baltazar, Samuel E. (AMER CHEMICAL SOC, 2018)
      Bimetallic nanoparticles (NPs) can be tailored by varying the concentration of their constituent elements, resulting in novel structures and/or configurations, leading to interesting electronic, mechanical, and chemical ...
    • Simple voltammetric analyses of ochratoxin A in food samples using highly-stable and anti-fouling black phosphorene nanosensor 

      Camarada, María Belén [Univ Mayor, Fac Ciencias, Ctr Nanotecnol Aplicada]; Xiang, Yuan; Wen, Yangping; Wu, Hao; Chen, Jinyin; Li, Mingfang; Liao, Xiaoning (PERGAMON-ELSEVIER SCIENCE LTD, 2018)
      There are few reports on the electrochemical detection of ochratoxin A (OTA) using chemically modified electrode owing to the OTA poor electrochemical activity and strong fouling effect towards electrode surface. In this ...
    • Growth of Ni nanoclusters on irradiated graphene: a molecular dynamics study 

      González, Rafael I. [Univ Mayor, Fac Ciencias, Ctr Nanotecnol Aplicada, Santiago, Chile]; Valencia, Felipe J. [Univ Mayor, Fac Ciencias, Nucl Matemat Fis & Estadit]; Hernández-Vázquez, E. E.; Bringa, E. M.; Moran-López, J. L.; Rogan, J.; Muñoz, F. (ROYAL SOC CHEMISTRY, 2018)
      We studied the soft landing of Ni atoms on a previously damaged graphene sheet by means of molecular dynamics simulations. We found a monotonic decrease of the cluster frequency as a function of its size, but few big ...
    • Bending energy of 2D materials: graphene, MoS2 and imogolite 

      González, Rafael I. [Univ Mayor, Fac Ciencias, Ctr Nanotecnol Aplicada, Santiago, Chile]; Valencia, Felipe J. [Univ Mayor, Fac Ciencias, Nucl Matemat Fis & Estadit]; Rogan, Joséé; Valdivia, Juan Alejandro; Sofo, Jorge; Kiwi, Miguel; Muñoz, Francisco (ROYAL SOC CHEMISTRY, 2018)
      The bending process of 2D materials, subject to an external force, is investigated, and applied to graphene, molybdenum disulphide (MoS2), and imogolite. For graphene we obtained 3.43 eV angstrom(2) per atom for the bending ...
    • Small eukaryotic phytoplankton communities in tropical waters off Brazil are dominated by symbioses between Haptophyta and nitrogen-fixing cyanobacteria 

      Lopes dos Santos, Adriana [Univ Mayor, GEMA Ctr Genom Ecol & Environm, Camino La Piramide 5750, Santiago, Chile]; Ribeiro, Catherine Gerikas; Marie, Dominique; Brandini, Frederico Pereira; Vaulot, Daniel (NATURE PUBLISHING GROUP, 2018)
      Symbioses between eukaryotic algae and nitrogen-fixing cyanobacteria have been recognized in recent years as a key source of new nitrogen in the oceans. We investigated the composition of the small photosynthetic eukaryote ...
    • Metabolic potential and in situ transcriptomic profiles of previously uncharacterized key microbial groups involved in coupled carbon, nitrogen and sulfur cycling in anoxic marine zones 

      Trefault, Nicole [Univ Mayor, GEMA Ctr Genom Ecol & Environm, Santiago, Chile]; Plominsky, Alvaro M.; Podell, Sheila; Blanton, Jessica M.; De la Iglesia, Rodrigo; Allen, Eric E.; von Dassow, Peter; Ulloa, Osvaldo (WILEY, 2018)
      Anoxic marine zones (AMZs) impact biogeochemical cycles at the global scale, particularly the nitrogen cycle. Key microbial players from AMZs have been identified, but the majority remains unrecognized or uncharacterized. ...
    • Ostreococcus tauri Luminescent Reporter Lines as Biosensors for Detecting Pollution From Copper-Mine Tailing Effluents in Coastal Environments 

      Andrade, Santiago [Univ Mayor, Fac Ciencias, Ctr GEMA Genom Ecol & Media Ambiente, Santiago, Chile]; Trefault, Nicole [Univ Mayor, Fac Ciencias, Ctr GEMA Genom Ecol & Media Ambiente, Santiago, Chile]; Henriquez-Castillo, Carlos; Botebol, Hugo; Mouton, Adelaide; Ramírez-Flandes, Salvador; Lozano, Jean-Claude; Lelandais, Gaelle; De la Iglesia, Rodrigo; Bouget, Francois-Yves (FRONTIERS MEDIA SA, 2018)
      Phytoplankton cells are excellent biosensors for environmental monitoring and toxicity assessments in different natural systems. Green algae, in particular, appear to be more responsive to copper (Cu) disturbances. This ...
    • Temperature modulates Fischerella thermalis ecotypes in Porcelana Hot Spring 

      Trefault, Nicole [Univ Mayor, GEMA Ctr Genom Ecol & Environm, Santiago, Chile]; Alcorta, Jaime; Espinoza, Sebastián; Viver, Tomeu; Alcaman-Arias, María E.; Rossello-Mora, Ramón; Diez, Beatriz (ELSEVIER GMBH, URBAN & FISCHER VERLAG, 2018)
      In the Porcelana Hot Spring (Northern Patagonia), true-branching cyanobacteria are the dominant primary producers in microbial mats, and they are mainly responsible for carbon and nitrogen fixation. However, little is known ...
    • Understanding time use via data mining: A clustering-based framework 

      Rosales-Salas, Jorge [Univ Mayor, Fac Humanidades, Ctr Invest Sociedad Tecnol & Futuro Humano, Av Portugal 351, Santiago, Chile]; Maldonado, Sebastián; Seret, Alex (IOS PRESS, 2018)
      In this work, a data mining framework is proposed to improve the understanding of how people allocate their time. Using a multivariate approach, we performed a clustering procedure, and subsequently a regression analysis ...
    • Varieties of Capitalism and its Contributions to the Study of Development in Latin America 

      Madariaga, Aldo [Univ Mayor, Ctr Econ & Polit Sociales, Santiago, Chile] (CENTRO DE INVESTIGACION Y DOCENCIA ECONOMICAS, 2018)
      The literature on varieties of capitalism has significantly advanced the research on comparative political economy globally. In Latin America, this has been cited increasingly as a way to understand the development problems ...
    • Development and inequality in Chile (1850-2009): history of its political economy 

      Sanhueza, Claudia [Univ Mayor, Santiago, Chile] (WILEY, 2018)
    • Distinctive Archaeal Composition of an Artisanal Crystallizer Pond and Functional Insights Into Salt-Saturated Hypersaline Environment Adaptation 

      Trefault, Nicole [Univ Mayor, GEMA Ctr Genom Ecol & Environm, Santiago, Chile]; Plominsky, Alvaro M.; Henriquez-Castillo, Carlos; Delherbe, Nathalie; Podell, Sheila; Ramírez-Flandes, Salvador; Ugalde, Juan A.; Santibañez, Juan F.; van den Engh, Ger; Hanselmann, Kurt; Ulloa, Osvaldo; De la Iglesia, Rodrigo; Allen, Eric E. (FRONTIERS MEDIA SA, 2018)
      Hypersaline environments represent some of the most challenging settings for life on Earth. Extremely halophilic microorganisms have been selected to colonize and thrive in these extreme environments by virtue of a broad ...
    • High similarity in the microbiota of cold-water sponges of the Genus Mycale from two different geographical areas 

      Trefault, Nicole [Univ Mayor, GEMA Ctr Genom Ecol & Environm, Santiago, Chile]; Cárdenas, César A.; González-Aravena, Marcelo; Font, Alejandro; Hestetun, Jon T.; Hajdu, Eduardo; Malmbergg, Maja; Bongcarn-Rudloff, Erik (PEERJ INC, 2018)
      Sponges belonging to genus Mycale are common and widely distributed across the oceans and represent a significant component of benthic communities in term of their biomass, which in many species is largely composed by ...
    • Species traits and network structure predict the success and impacts of pollinator invasions 

      Ramos-Jiliberto, Rodrigo [Univ Mayor, Ctr Genom Ecol & Environm GEMA]; Valdovinos, Fernanda S.; Berlow, Eric L.; Moisset de Espanes, Pablo; Vázquez, Diego P.; Martínez, Neo D. (NATURE PUBLISHING GROUP, 2018)
      Species invasions constitute a major and poorly understood threat to plant-pollinator systems. General theory predicting which factors drive species invasion success and subsequent effects on native ecosystems is particularly ...
    • The process of connectivity loss during habitat fragmentation and their consequences on population dynamics 

      Ramos-Jiliberto, Rodrigo [Univ Mayor, Ctr Genom Ecol & Environm GEMA]; Cordova-Lepe, Fernando; Del Valle, Rodrigo (ELSEVIER SCIENCE BV, 2018)
      Understanding the processes and consequences of habitat fragmentation is highly relevant since it represents a serious threat to biodiversity. However, fragmentation includes several facets that are difficult to dissect, ...
    • Next Generation Sequencing and mass spectrometry reveal high taxonomic diversity and complex phytoplankton-phycotoxins patterns in Southeastern Pacific fjords 

      Moreno-Pino, Mario [Univ Mayor, GEMA Ctr Genom Ecol & Environm, Camino Piramide 5750, Santiago, Chile]; Krock, Bernd; De la Iglesia, Rodrigo; Pizarro, Gemita; Vásquez, Mónica (PERGAMON-ELSEVIER SCIENCE LTD, 2018)
      In fjord systems, Harmful Algal Blooms (HABs) not only constitute a serious problem when affecting the wildlife and ecosystems, but also human health and economic activities related to the marine environment. This is mostly ...
    • Highly masculinized and younger males attain higher reproductive success in a social rodent 

      Correa, Loreto A. [Univ Mayor, Fac Ciencias, Escuela Med Vet, Nucleo Interdisciplinario, Camino Piramide 5750, Santiago, Chile]; Leon, Cecilia; Ramírez-Estrada, Juan; Ly-Prieto, Alvaro; Abades, Sebastián; Hayes, Loren D.; Soto-Gamboa, Mauricio; Ebensperger, Luis A. (OXFORD UNIV PRESS INC, 2018)
      Alternative morphotypes have been reported in males of different taxa. In some mammals, highly masculinized and slightly masculinized males represent 2 opposite ends along a gradient of phenotypic variation in males. This ...
    • Layer-by-Layer-Assembled AuNPs-Decorated First-Generation Poly(amidoamine) Dendrimer with Reduced Graphene Oxide Core as Highly Sensitive Biosensing Platform with Controllable 3D Nanoarchitecture for Rapid Voltammetric Analysis of Ultratrace DNA Hybridization 

      Camarada, María Belén [Univ Mayor, Fac Ciencias, Ctr Nanotecnol Aplicada]; Jayakumar, Kumarasamy; Dharuman, Venkataraman; Rajesh, Rajendiran; Venkatesan, Rengarajan; Ju, Huangxian; Maniraj, Mahalingam; Rai, Abhishek; Barman, Sudipta Roy; Wen, Yangping (AMER CHEMICAL SOC, 2018)
      The structure and electrochemical properties of layer-by-layer-assembled gold nanoparticles (AuNPs)-decorated first-generation (G1) poly(amidoamine) dendrimer (PD) with reduced graphene oxide (rGO) core as a highly sensitive ...
    • Ion implantation in nanodiamonds: size effect and energy dependence 

      Valencia, Felipe J. [Univ Mayor, Fac Ciencias, Nucleo Matemat Fis & Estadist, Santiago, Chile]; González, Rafael I. [Univ Mayor, Fac Ciencias, Ctr Nanotecnol Aplicada]; Shiryaev, Andrey A.; Hinks, Jonathan A.; Marks, Nigel A.; Greaves, Graeme; Donnelly, Stephen E.; Kiwi, Miguel; Trigub, Alexander L.; Bringa, Eduardo M.; Fogg, Jason L.; Vlasov, Igor I. (NATURE PUBLISHING GROUP, 2018)
      Nanoparticles are ubiquitous in nature and are increasingly important for technology. They are subject to bombardment by ionizing radiation in a diverse range of environments. In particular, nanodiamonds represent a variety ...


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