Browsing by Title Facultad de Ciencias Físicas y Matemáticas

Now showing items 21-40 of 20250

    • 3D kinematics of white dwarfs from the SPY project. II. 
      Pauli, E.-M.; Napiwotzki, R.; Heber, U.; Altmann, Martin; Odenkirchen, M. (EDP SCIENCES S A, 2006-02)
      We present the kinematics of a sample of 398 DA white dwarfs from the SPY project (ESO SN Ia Progenitor surveY) and discuss kinematic criteria for distinguishing of thin-disk, thick-disk, and halo populations. This is the ...
    • 3D multiple sound source localization by proposed cuboids nested microphone array in combination with ... 
      Dehghan Firoozabadi, Ali; Irarrázaval, Pablo; Adasme, Pablo; Zabala Blanco, David; Palacios Játiva, Pablo Geovanny; Azurdia Meza, César (MDPI, 2020)
      Sound source localization is one of the applicable areas in speech signal processing. The main challenge appears when the aim is a simultaneous multiple sound source localization from overlapped speech signals with an ...
    • 3D numerical modeling to support the design of contractions in supercritical flow channels 
      Martínez M., Niño Y. (University of Queenslandajc@maths.uq.edu.au, 2020)
    • 3D radiative transfer of intrinsically polarized dust emission based on aligned aspherical grains 
      Bertrang, Gesa H.-M.; Wolf, S. (Oxford University Pres, 2017)
      (Sub-)millimetre observations of the polarized emission of aligned aspherical dust grains enable us to study the magnetic fields within protoplanetary disc. However, the interpretation of these observations is complex. One ...
    • 3D sound interactive environments for blind children problem solving skills 
      Sánchez Ilabaca, Jaime; Sáenz, Mauricio (TAYLOR & FRANCIS LTD, 2006-08)
      Audio-based virtual environments have been increasingly used to foster cognitive and learning skills. A number of studies have also highlighted that the use of technology can help learners to develop effective skills such ...
    • 3D Spatial exploration by E. Coli echoes motor temporal variability 
      Figueroa Morales, Nuris; Soto, Rodrigo; Junot, Gaspard; Darnige, Thierry; Douarche, Carine; Martínez, Vincent A.; Lindner, Anke; Clément, Éric (American Physical Society, 2020)
      Unraveling bacterial strategies for spatial exploration is crucial for understanding the complexity in the organization of life. Bacterial motility determines the spatiotemporal structure of microbial and controls infection ...
    • 3He/4He Signature of Magmatic Fluids from Telica (Nicaragua) and Baru (Panama) Volcanoes, Central American ... 
      Rizzo, Andrea L.; Robidoux, Philippe; Aiuppa, Alessandro; Di Piazza, Andrea (MDPI, 2022)
      Featured Application The use of noble gas isotopic signature of fluid inclusions is increasingly being applied as a complement to traditional volcanic gas sampling and monitoring techniques. The chemical signature of fluid ...
    • 4-Allyl-2-methoxy-5-nitrophenyl acetate 
      Carrasco Altamirano, Héctor; Espinoza Catalán, Luis; Gallardo Araya, Claudio; Cardona, Wilson; Ibáñez, Andrés; Alvarez Thon, Luis (BLACKWELL, 2006-05)
      Molecules of the title compound, C12H13NO5, are linked into chains via weak C-H (...)pi( allyl) interactions and these chains are linked into sheets via C-H (...) O contacts; the sheets, in turn, are interconnected via ...
    • 4-{3,5-Dimethyl-4-[(E)-(4-methylphenyl)diazenyl]-1H-pyrazol-1-yl}benzonitrile 
      Bustos, Carlos; Schott, Eduardo; Mac-Leod-Carey, Desmond A.; Ibáñez, Andrés; Alvarez Thon, Luis (BLACKWELL, 2006-06)
      Mol-ecules in the title compound, C19H17N5, are linked into chains via weak C-H-...pi(cyano) inter-actions, and these chains are linked via C-H-...pi(arene) interactions to form a three-dimensional structure of parallel sheets.
    • 5-HT 2 receptor binding, functional activity and selectivity in N-benzyltryptamines 
      Toro-Sazo, Miguel; Brea, José; Loza, María I.; Cimadevila, Marta; Cassels Niven, Bruce (Public Library of Science, 2019)
      © 2019 Toro-Sazo et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the ...
    • 60 GHz Millimeter-wave Bottom-Layer Solutions: Multiplexing Access, Energy Awareness, and Peak-to-Average-Power ... 
      Estévez Montero, Claudio; Azurdia Meza, César (IEEE, 2015)
      A clear trend shows that cells are smaller, more homogeneously distributed, higher frequency oriented, and more energy conscious. This points toward wireless systems that implement millimeter-wave modulation; therefore, ...
    • 76 T dwarfs from the UKIDSS LAS: benchmarks, kinematics and an updated space density 
      Burningham, Ben; Cardoso, C. V.; Smith, L.; Leggett, S. K.; Smart, R. L.; Mann, A. W.; Dhital, S.; Lucas, P. W.; Tinney, C. G.; Pinfield, D. J.; Zhang, Z.; Morley, C.; Saumon, D.; Aller, K.; Littlefair, S. P.; Homeier, D.; Lodieu, N.; Deacon, N.; Marley, M. S.; Spaandonk, L. van; Baker, D.; Allard, F.; Andrei, A. H.; Canty, J.; Clarke, J.; Day-Jones, A. C.; Dupuy, T.; Fortney, J. J.; Gomes, J.; Ishii, M.; Jones, H. R. A.; Liu, M.; Magazzú, A.; Marocco, F.; Murray, D. N.; Rojas-Ayala, B.; Tamura, M. (Oxford University Press on behalf of the Royal Astronomical Society, 2013-07)
      We report the discovery of 76 new T dwarfs from the UKIRT Infrared Deep Sky Survey (UKIDSS) Large Area Survey (LAS). Near-infrared broad- and narrow-band photometry and spectroscopy are presented for the new objects, along ...
    • 7D-folding integral in a density-dependent microscopic optical model potential for nucleon-nucleus scattering 
      Arellano Sepúlveda, Hugo; Bauge, E. (AMER PHYSICAL SOC, 2011-09-14)
      Microscopic optical model potentials, based on density-dependent effective interactions, involve multidimensional integrals to account for the full Fermi motion of the target struck nucleon throughout the nucleus. If a ...
    • 8-13 mu m dust emission features in Galactic bulge planetary nebulae 
      Casassus Montero, Simón; Roche, P. F.; Aitken, D. K.; Smith, C. H. (BLACKWELL SCIENCE LTD, 2001-11-01)
      A sample of 25 infrared-bright planetary nebulae (PNe) towards the Galactic bulge is analysed through 8-13 mum spectroscopy. The classification of the warm dust emission features provides a measure of the C/O chemical ...
    • 870 mu m continuum observations of the bubble-shaped nebula Gum 31 
      Duronea, N.; Vásquez, J.; Gómez, L.; Cappa, C.; Firpo, V.; López Caraballo, C.; Rubio López, Mónica (EDP Sciences, 2015)
      Aims. We present here a study of the cold dust in the close environs of the ring nebula Gum 31. We aim at deriving the physical properties of the molecular gas and dust associated with the nebula, and investigating its ...
    • A (5/3 +)-Approximation for unsplittable flow on a path: Placing small tasks into boxes 
      Grandoni, Fabrizio; Wiese, Andreas; Mömke, Tobias; Zhou, Hang (Association for Computing Machinery, 2018)
      In the unsplittable flow on a path problem (UFP) we are given a path with edge capacities and a collection of tasks. Each task is characterized by a subpath, a profit, and a demand. Our goal is to compute a maximum ...
    • A 3-D perspective to the internal properties of low and high-redshift galaxies 
      Molina Tobar, Juan Andrés (Universidad de Chile, 2019)
      En el presente trabajo estudio la morfología y cinemática de dos muestras de galaxias a bajo y alto corrimiento al rojo (redshift). Analizo la cinemática interna de estas galaxias con objetivo de encontrar posibles ...
    • A 30 kpc spatially extended clumpy and asymmetric galactic outflow at z similar to 1.7 
      Shaban, Ahmed; Bordoloi, Rongmon; Chisholm, John; Sharma, Soniya; Sharon, Keren; Rigby, Jane R.; Gladders, Michael G.; Bayliss, Matthew B.; Barrientos, L. Felipe; López Morales, Sebastián Víctor Claudio; Tejos, Nicolas; Ledoux, Cédric; Florian, Michael K. (IOP, 2022)
      We image the spatial extent of a cool galactic outflow with fine-structure Fe ii* emission and resonant Mg ii emission in a gravitationally lensed star-forming galaxy at z = 1.70347. The Fe ii* and Mg ii (continuum-subtracted) ...
    • A 3D Iris Scanner from a Single Image Using Convolutional Neural Networks 
      Benalcazar, DP; Zambrano, JE; Bastias, D; Perez, CA; Bowyer, KW (Institute of Electrical and Electronics Engineers Inc., 2020)
    • A 3D Voronoi+Gapper Galaxy Cluster Finder in Redshift Space to z ∼ 0.2. II. An Abundant Cluster Population ... 
      Campusano Brown, Luis; Marinello, Gabriel; Clowes, Roger G.; Haines, Christopher P.; Pereira, Sebastián; Pizarro, Daniel; Hitschfeld Kahler, Nancy; Söchting, Ilona K. (IOP, 2020)
      We identify 1901 galaxy clusters (N-g >= 2) with the VoML+G algorithm (Paper I) on the Two-Degree Field Galaxy Redshift Survey. We present the 341 clusters with at least 10 galaxies that are within 0.009 < z < 0.14 (the ...