Browsing by Title Artículos de revistas

Now showing items 4275-4294 of 7543

    • [NaCu(2,4-HPdc)(2,4-Pdc)] Mixed Metal-Organic Framework as a Heterogeneous Catalyst 
      Larrea, Edurne S.; Fernández de Luis, Roberto; Orive, Joseba; Iglesias, Marta; Arriortua, María I. (Wiley, 2015)
      The synthesis of a new mixed metal-organic framework ( M ' MOF) has been accomplished by the metalloligand approach. [ NaCu( 2,4- HPdc)( 2,4- Pdc)] ( 2,4- H2Pdc = pyridine2,4- dicarboxylic acid) has been obtained from the ...
    • Nanocomposites of ferroelectric liquid crystals and FeCo nanoparticles: towards a magnetic response via the ... 
      Romero-Hasler, Patricio N.; Kurihara, Lynn K.; Mair, Lamar O.; Weinberg, Irving N.; Soto-Bustamante, E. A.; Martínez-Miranda, L. J. (Taylor and Francis Ltd., 2020)
      We study a nanocomposite consisting of a ferroelectric liquid crystal and a magnetic nanoparticle in order to explore the possibility of using it as a magnetic resonant imaging contrast agent which will measure a field of ...
    • Nanocrystalline carbon flakes deposited by RF magnetron sputtering 
      Guzmán Olivos, Fernando; Espinoza González, Rodrigo; Fuenzalida Escobar, Víctor (Elsevier, 2016)
      Carbon nanostructures were prepared by RF magnetron sputtering at deposition times from 30 to 120 min and temperatures on silicon substrates from 390 degrees C to 510 degrees C. Scanning and transmission electron microscopy ...
    • Nanogeochemistry of hydrothermal magnetite 
      Deditius, Artur P.; Reich Morales, Martín; Simon, Adam C.; Suvorova, Alexandra; Knipping, Jaayke; Roberts, Malcolm P.; Rubanov, Sergey; Dodd, Aaron; Saunders, Martin (Springer, 2018-06)
      Magnetite from hydrothermal ore deposits can contain up to tens of thousands of parts per million (ppm) of elements such as Ti, Si, V, Al, Ca, Mg, Na, which tend to either structurally incorporate into growth and sector ...
    • Nanogrids: Good practices and challenges in the projects in Colombia 
      Vives M.V., Chamorro H.R., Ortiz-Villalba D., Jiménez F., Gonzalez-Longatt F.M., Jimenez-Estevez G., Guerrero J., Cadena A., Sood V.K. (Institution of Engineering and Technology, 2020)
    • Nanoinformatics: an emerging area of information technology at the intersection of bioinformatics, computational ... 
      González Nilo, Fernando; Pérez Acle, Tomás; Guínez Molinos, Sergio; Geraldo, Daniela A.; Sandoval, Claudia; Yévenes, Alejandro; Santos, Leonardo S.; Laurie, V. Felipe; Mendoza, Hegaly; Cachau, Raúl E. (SOC BIOLGIA CHILE, 2011)
      After the progress made during the genomics era, bioinformatics was tasked with supporting the fl ow of information generated by nanobiotechnology efforts. This challenge requires adapting classical bioinformatic and ...
    • Nanoparticle reinforcement in elastomeric polyethylene composites under tensile tests 
      Palza Cordero, Humberto; Rojas, Mauricio; Cortez, Elizabeth; Palma Hillerns, Rodrigo; Zapata, Paula (Elsevier, 2016)
      Two ethylene-1-butene thermoplastic elastomer copolymers were melt mixed with different nanometric fillers such as: multi-walled carbon nanotubes (CNT), thermally reduced graphite oxide (TrGO), and spherical metal ...
    • Nanoscale partitioning of Ru, Ir, and Pt in base-metal sulfides from the Caridad chromite deposit, Cuba 
      González Jiménez, José; Deditius, Artur; Gervilla, Fernando; Reich Morales, Martín; Suvorova, Alexandra; Roberts, Malcolm; Roqué, Josep; Proenza, Joaquín A. (Walter de Gruyter GmbH, 2018)
      We report new results of a combined focused ion beam and high-resolution transmission electron microscopy (FIB/HRTEM) investigation of platinum-group elements (PGE)-rich base-metal sulfides. The Ni-Fe-Cu base-metal ...
    • Nanosecond Pulsed Laser Ablation on Stainless Steel − Combining Finite Element Modeling and Experimental Work 
      Zhang, Jun Jie; Zhao, Liang; Rosenkranz, Andreas; Song, Cheng Wei; Yan, Yong Da; Sun, Tao (Wiley-VCH Verlag, 2019)
      In the present work, finite element simulations to investigate nanosecond pulsed laser ablation of stainless steel under low laser fluence conditions is performed. The laser has a wavelength of 1064 nm as well as a Gaussian ...
    • Nanosensors for a Monitoring System in Intelligent and Active Packaging 
      Fuertes, Guillermo; Soto, Ismael; Vargas, Manuel; Valencia Musalem, Álvaro; Sabattin, Jorge; Carrasco, Raul (HINDAWI PUBLISHING CORP, 2016)
      A theoretical wireless nanosensor network (WNSN) system that gives information about the food packaging condition is proposed. The protection effectiveness is estimated by measuring many factors, such as the existence of ...
    • Nanosized Fe3O4 incorporated on a TiO2 surface for the enhanced photocatalytic degradation of organic pollutants 
      Gnanasekaran, Lalitha; Hemamalini, R.; Rajendran, Saravanan; Qin, Jiaqian; Yola, Mehmet Lütfi; Atar, Necip; Gracia, F. (Elsevier B.V., 2019)
      In this work, precipitation and sol-gel mixed procedures were used to prepare a TiO2@Fe3O4 nanocomposite. The X-ray diffraction (XRD)and selected area electron diffraction (SAED)results unmistakably elucidated the tetragonal ...
    • Nanosized Titania-Nickel mixed oxide for visible light photocatalytic activity 
      Rajendran, Saravanan; Manoj, Devaraj; Jebaranjitham, J. Nimita; Kumar, Baskaran Ganesh; Bharath, G.; Banat, Fawzi; Qin, Jiaqian; Vadivel, S.; Gracia Caroca, Francisco (Elsevier, 2020)
      Colourful dyes are primarily used in the textiles, toys, food, inks, paper and plastics. These dyes are water soluble and contaminate the water. The dyes are not bio-degradable and sustain in the water for long time create ...
    • Nanostructuring of anodic copper oxides in fluoride-containing ethylene glycol media 
      Oyarzún Jerez, Diego; López Teijelo, Manuel; Ramos Cervantes, Wilkendry; Linarez Pérez, Omar; Sánchez, Julio; Pizarro, Guadalupe del C.; Acosta, Gabriela; Flores Carrasco, Marcos; Arratia Pérez, Ramiro (Elsevier, 2017)
      We demonstrate that the anodization of copper in alkaline water/ethylene glycol media containing fluoride ions generates nanostructured copper oxide films. By modifying the anodization conditions (fluoride and OH– ...
    • Narrow belt of debris around the Sco-Cen star HD 141011 
      Bonnefoy, M.; Milli, J.; Menard, F.; Delorme, P.; Chomez, A.; Bonavita, M.; Lagrange, A-M; Vigan, A.; Augereau, J. C.; Beuzit, J. L.; Biller, B.; Boccaletti, A.; Chauvin, G.; Desidera, S.; Faramaz, V.; Galicher, R.; Gratton, R.; Hinkley, S.; Lazzoni, C.; Matthews, E.; Mesa, D.; Mordasini, C.; Mouillet, D.; Olofsson, J.; Pinte, C. (EDP Sciences, 2021)
      Context. We initiated a deep-imaging survey of Scorpius-Centaurus A-F stars in 2015. These stars are predicted to host warm inner and cold outer belts of debris reminiscent of the architecture of emblematic systems such ...
    • Natural attributes of Chilean honeys modified by the presence of neonicotinoids residues 
      Mejias, Enrique; Gómez, Carlos; Garrido, Tatiana; Godoy, Paulina; Gómez, Miguel; Montenegro, Gloria (Springer Netherlands, 2019)
      © 2019, Springer Nature B.V. Honeys in Chile are produced from native and endemic plant species that, due to phenolic compounds, present beneficial biological attributes. However, certain undesirable pollutants can exist ...
    • Natural convection in thermal plumes emerging from a single heat source 
      Hernández Pellicer, Rodrigo (Elsevier, 2015)
      We report numerical simulations of confined natural convection from a single heat source, leading to the evolution of thermal plumes in two and three dimensions. Thermal plumes are driven through a single heat source mounted ...
    • Natural forests loss and tree plantations: large-scale tree cover loss differentiation in a threatened ... 
      Altamirano, Adison; Miranda, Alejandro; Aplin, Paul; Carrasco Toledo, Jaime; Catalán, Germán; Cayuela, Luis; Fuentes Castillo, Taryn; Hernández, Angela; Martínez Harms, Maria J.; Peluso, Franco; Prado, Marco; Reyes Riveros, Rosa; Van Holt, Tracy; Vergara, Cristian; Zamorano Elgueta, Carlos; Di Bella, Carlos (IOP Publishing, 2020)
      Distinguishing between natural forests from exotic tree plantations is essential to get an accurate picture of the world's state of forests. Most exotic tree plantations support lower levels of biodiversity and have less ...
    • Natural Inflation on the brane with a TeV-scale gravity: parameter constraints after Planck 2015 
      Videla Menares, Nelson; Panotopoulos, Grigorios (World Scientific, 2017-06)
      In the present work, we have studied Natural Inflation (NI) in the framework of the Randall-Sundrum II (RS-II) brane model in the light of the latest Planck results. Adopting the Randall-Sundrum fine-tuning, the model is ...
    • Natural isoforms of the Photosystem II D1 subunit differ in photoassembly efficiency of the water-oxidizing complex 
      Vinyard, David J.; Sun, Jennifer S.; Gimpel, Javier; Ananyev, Gennady M.; Mayfield, Stephen P.; Dismukes, G. Charles (Springer, 2016)
      Oxygenic photosynthesis efficiency at increasing solar flux is limited by light-induced damage (photoinhibition) of Photosystem II (PSII), primarily targeting the D1 reaction center subunit. Some cyanobacteria contain two ...
    • Nature and P-T-t constraints of very low-grade metamorphism in the Triassic-Jurassic basins, Coastal Range, ... 
      Belmar Urbina, Mauricio; Morata Céspedes, Diego (SERVICIO NACIONAL GEOLOGIA MINERVA, 2005-07)
      Triassic-Jurassic volcano-sedimentary sequences in the Coastal Range of central Chile (34 degrees 45/35 degrees 20'S) from the Vichuquen-Tilicura and Hualane-Gualleco basins display metamorphic assemblages indicative of ...