Now showing items 1-20 of 15645

    • [1-(Ethoxycarbonyl)-1-cyclopentyl]triphenylphosphonium Bromide, [(C6H5)3PC(C4H8)(COOC2H5)]Br 

      Boys Mardones, Daphne; Araya Maturana, Ramiro; Gonzáles Campos, Oscar Cesar; Manríquez Castro, Víctor (1995)
      The crystal structure of the title phosphonium salt consists of a tetrahedral (C6Hs)P +C(C4HS)- (COOCH2CH3) cation and a Br- anion. The triphenylphosphonium group has P---C(phenyl) distances which are equal within ...
    • 1-ethyl-3-(4-hydroxy-3-methoxyphenyl)-6-methoxy-2-methylindan-5-ol 

      Alvarez Thon, Luis; Carrasco Altamirano, Héctor; Espinoza Catalán, Luis; Gallardo Araya, Claudio; Cardona, Wilson; Ibáñez, Andrés (BLACKWELL PUBLISHING, 2006-05)
      Molecules in the title crystal structure, C20H24O4, are linked into chains of R-4(4)(8) rings along [010] and these chains are linked into sheets via weak C-H center dot center dot center dot pi(arene) interactions. These ...
    • (100) oriented diamond film prepared on amorphous carbon buffer layer containing nano-crystalline diamond grains 

      Lu, Yunxiang; Man, Weidong; Wang, Bo; Rosenkranz, Andreas; Yang, Mingyang; Yang, Ke; Yi, Jian; Song, Hui; Li, He; Jiang, Nan (Elsevier, 2020)
      In this study, amorphous carbon buffer layer containing nano-crystalline diamond grains was pre-deposited on single crystal silicon (Si) wafers. (100) oriented diamond films were prepared on the buffer layer by increasing ...
    • The 1877–1878 El Niño episode: associated impacts in South America 

      Aceituno Gutiérrez, Patricio; Prieto, María del Rosario; Solari, María Eugenia; Martínez, Alejandra; Poveda, Germán; Falvey, Mark (Springer, 2009)
      At times when attention on climate issues is strongly focused on the assessment of potential impacts of future climate change due to the intensification of the planetary greenhouse effect, it is perhaps pertinent to look ...
    • THE 1990 CALAN TOLOLO SUPERNOVA SEARCH 

      Hamuy Wackenhut, Mario; Maza Sancho, José; Phillips, M. M.; Suntzeff, Nicholas B.; Wischnjewsky, M.; Smith, R. C.; Antezana, Roberto; Wells, L. A.; González, L. E.; Gigoux, P.; Navarrete, M.; Barrientos, F.; Lamontagne, R.; Della Valle, Massimo; Elias, J. E.; Phillips, A. C.; Odewahn, S. C.; Baldwin, J. A.; Walker, A. R.; Williams, T.; Sturch, C.; Baganoff, F. K.; Chaboyer, Brian; Schommer, R. A.; Tirado, H.; Hernández, M.; Ugarte, P.; Guhathakurta, P.; Howell, S. B.; Szkody, P.; Schmidtke, P. C.; Roth, J. (AMER INST PHYSICS, 1993-12)
      We have started a search for supernovae as a collaboration between the University of Chile and the Cerro Tololo Inter-American Observatory, with the aim of producing a moderately distant (0.01 < z < 0.10) sample of Type ...
    • 2-(2-pyridylamino)pyridinium tetrachloridozincate(II) 

      Venegas Yazigi, Diego; Castillo, Carolina; Paredes García, Verónica; Vega, Andrés; Spodine Spiridonova, Evgenia (BLACKWELL PUBLISHING, 2008-06)
      The structure of the title compound, (C10H10N3)(2)[ZnCl4], is composed of C10H9N3H+ ( DPAH(+)) cations and [ ZnCl4](2-) anions. The two pyridyl rings of DPAH+ are approximately coplanar, with a dihedral angle of 7.2 ( ...
    • The 2014 Alma Long Baseline Campaign: An Overview 

      Fomalont, E. B.; Vlahakis, C.; Corder, S.; Remijan, Anthony; Barkats, Denis; Lucas, R.; Hunter, T. R.; Brogan, C. L.; Asaki, Y.; Matsushita, S.; Dent, William R. F.; Hills, R. E.; Phillips, N.; Richards, A. M. S.; Cox, P.; Amestica, R.; Broguiere, D.; Cotton, W.; Hales, Antonio; Hiriart, R.; Hirota, A.; Hodge, J. A.; Impellizzeri, C. M. V; Kern, J.; Kneissl, R.; Liuzzo, E.; Marcelino, N.; Marson, R.; Mignano, A.; Nakanishi, K.; Nikolic, B.; Perez, J. E.; Pérez, L. M.; Toledo, I.; Aladro, R.; Butler, B.; Cortes, J.; Cortes, P.; Dhawan, V.; Di Francesco, J.; Espada, D.; Galarza, F.; Garcia-Appadoo, D.; Guzman-Ramirez, L.; Humphreys, E.; Jung, T.; Kameno, S.; Laing, R. A.; Leon, S.; Mangum, J.; Marconi, G.; Nagai, H.; Nyman, L. A.; Radiszcz, M.; Rodón, J.; Sawada, T.; Takahashi, S.; Tilanus, R. P. J.; van Kempen, T.; Vila Vilaro, B.; Watson, L. C.; Wiklind, T.; Gueth, F.; Tatematsu, Ken’ichi; Wootten, A.; Castro-Carrizo, A.; Chapillon, E.; Dumas, G.; De Gregorio Monsalvo, Itziar; Francke, H.; Gallardo, J.; Garcia, J.; Gonzalez, S.; Hibbard, J.; Hill, T.; Kaminski, T.; Karim, A.; Krips, M.; Kurono, Y.; Lopez, C.; Martin, S.; Maud, L.; Morales, F.; Pietu, V.; Plarre, K.; Schieven, G.; Testi, L.; Videla, L.; Villard, Eric; Whyborn, N.; Zwaan, M. A.; Alves, F.; Andreani, P.; Avison, A.; Barta, M.; Bedosti, F.; Bendo, G.; Bertoldi, F.; Bethermin, M.; Biggs, A.; Boissier, J.; Brand, J.; Burkutean, S.; Casasola, V.; Conway, J.; Cortese, L.; Dabrowski, B.; Davis, T. A.; Diaz Trigo, M.; Fontani, F; Franco-Hernandez, R.; Fuller, G.; Galvan Madrid, R.; Giannetti, A.; Ginsburg, A.; Graves, S. F.; Hatziminaoglou, E.; Hogerheijde, M. R.; Jachym, P.; Jimenez Serra, I.; Karlicky, M.; Klaasen, P.; Kraus, M.; Kunneriath, D.; Lagos, C.; Longmore, S.; Leurini, S.; Maercker, M.; Magnelli, B.; Marti Vidal, I.; Massardi, M.; Maury, A.; Muehle, S.; Muller, S.; Muxlow, T.; O’Gorman, E.; Paladino, R.; Petry, D.; Pineda, J.; Randall, S.; Richer, J. S.; Rossetti, A.; Rushton, A.; Rygl, K. L.; Sanchez Monge, A.; Schaaf, R.; Schilke, P.; Stanke, T.; Schmalzl, M.; Stoehr, F.; Urban, S.; van Kampen, E.; Vlemmings, W.; Wang, K.; Wild, W.; Yang, Y.; Iguchi, S.; Hasegawa, T.; Saito, M.; Inatani, J.; Mizuno, N.; Asayama, S.; Kosugi, G.; Morita, K. -I.; Chiba, K.; Kawashima, S.; Okumura, S. K.; Ohashi, N.; Ogasawara, R.; Sakamoto, S.; Noguchi, T.; Huang, Y. D.; Liu, S.-Y.; Kemper, F.; Koch, P. M.; Chen, M. -T.; Chikada, Y.; Hiramatsu, M.; Iono, Daisuke; Komugi, S.; Kim, J.; Lyo, A.-R.; Muller, E.; Herrera, C.; Miura, R. E.; Ueda, J.; Chibueze, J.; Su, Yu-Nung; Trejo-Cruz, A.; Wang, K.-S.; Kiuchi, H.; Ukita, N.; Sugimoto, M.; Kawabe, Ryohei; Hayashi, M.; Miyama, S.; Ho, P. T. P.; Kaifu, N.; Ishiguro, M.; Beasley, A. J.; Bhatnagar, S.; Braatz III, J. A.; Brisbin, D. G.; Brunetti, N.; Carilli, C.; Crossley, J. H.; D’Addario, L.; Donovan Meyer, J. L.; Emerson, D. T.; Evans, A. S.; Fisher, P.; Golap, K.; Griffith, D. M.; Hale, A. E.; Halstead, D.; Hardy, E. J.; Hatz, M. C.; Holdaway, M.; Indebetouw, R.; Jewell, P. R.; Kepley, A. A.; Kim, D.-C.; Lacy, M. D.; Leroy, A. K.; Liszt, H. S.; Lonsdale, C. J.; Matthews, B.; McKinnon, M.; Mason, B. S.; Moellenbrock, G.; Moullet, A.; Myers, S. T.; Ott, J.; Peck, A. B.; Pisano, J.; Radford, S. J. E.; Randolph, W. T.; Rao Venkata, U.; Rawlings, M. G.; Rosen, R.; Schnee, S. L.; Scott, K. S.; Sharp, N. K; Sheth, K.; Simon, R. S.; Tsutsumi, T.; Wood, S. J. (IOP Publishing, 2015)
      A major goal of the Atacama Large Millimeter/submillimeter Array (ALMA) is to make accurate images with resolutions of tens of milliarcseconds, which at submillimeter (submm) wavelengths requires baselines up to similar ...
    • 2017 Valparaíso earthquake sequence and the megathrust patchwork of central Chile 

      Nealy, Jennifer L.; Herman, Matthew W.; Moore, Ginevra L.; Hayes, Gavin P.; Benz, Harley M.; Bergman, Eric A.; Barrientos, Sergio (American Geophysical Union, 2017)
      In April 2017, a sequence of earthquakes offshore Valparaiso, Chile, raised concerns of a potential megathrust earthquake in the near future. The largest event in the 2017 sequence was a M6.9 on 24 April, seemingly colocated ...
    • 20th Conference of the Collaboration Researchers International Working Group - CRIWG 2014 

      Baloian Tataryan, Nelson; Zurita Alarcón, Gustavo (IEEE, 2015)
      This special number of the IEEE Latin America Transactions includes a selection of the best papers presented at the 20th Conference of the Collaboration Researchers International Working Group, which took place in Santiago ...
    • 250 years of sardine and anchovy scale deposition record in Mejillones Bay, northern Chile 

      Valdés, Jorge; Ortlieb, Luc; Gutiérrez, Dimitri; Marinovic, Luis; Vargas Easton, Víctor; Sifeddine, Abdel (PERGAMON-ELSEVIER SCIENCE LTD, 2008-10)
      Marine oxygen-deficient environments with high sedimentation rates and high primary productivity can provide relevant information regarding variations of ocean–climatic conditions in the past. In the Humboldt current ...
    • 2MASS J035523. 37+ 113343.7: A Young, Dusty, Nearby, Isolated Brown Dwarf Resembling a Giant Exoplanet 

      Faherty, Jacqueline K.; Rice, Emily L.; Cruz, Kelle L.; Mamajek, Eric E.; Núñez, Alejandro (The American Astronomical Society, 2013-01)
      We present parallax and proper motion measurements, near-infrared spectra, and Wide-field Infrared Survey Explorer photometry for the low surface gravity L5γ dwarf 2MASS J035523.37+113343.7 (2M0355). We use these data ...
    • 3-coloreo en grafos con caminos y ciclos prohibidos 

      Rojas Anríquez, Alberto Benjamín (Universidad de Chile, 2019)
      El k-coloreo de vértices de un grafo es un ya conocido problema NP-completo, debido a esto, los esfuerzos se han concentrado en estudiar el problema restringido a ciertas clases de grafos, para intentar resolverlo en ...
    • 3-Hydroxykynurenine bound to eye lens proteins induces oxidative modifications in crystalline proteins through a type I photosensitizing mechanism 

      Ávila, Felipe; Ravello, Natalia; Zanocco, Antonio L.; Gamon, Luke F.; Davies, Michael J.; Silva, Eduardo (Elsevier Inc., 2019)
      Photosensitized reactions mediated by endogenous chromophores have been associated with the etiology of age-related cataract disease. Endogenous chromophores such as 3-hydroxykynurenine (3OHKN) can be found in both free ...
    • The 31 deg2 release of the stripe 82 x-ray survey: the point source catalog 

      La Massa, Stephanie M.; Urry, C. Megan; Cappelluti, Nico; Böhringer, Hans; Comastri, Andrea; Glikman, Eilat; Richards, Gordon; Ananna, Tonima; Brusa, Marcella; Cardamone, Carie; Chon, Gayoung; Civano, Francesca; Farrah, Duncan; Gilfanov, Marat; Green, Paul; Komossa, S.; Lira Teillery, Paulina; Makler, Martin; Marchesi, Stefano; Pecoraro, Robert; Ranalli, Piero; Salvato, Mara; Schawinski, Kevin; Stern, Daniel; Treister, Ezequiel; Viero, Marco (Cornell University, 2015)
      We release the next installment of the Stripe 82 X-ray survey point-source catalog, which currently covers 31.3 deg2 of the Sloan Digital Sky Survey (SDSS) Stripe 82 Legacy field. In total, 6181 unique X-ray sources are ...
    • 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 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 ...
    • 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.