Río Gallegos, Provincia de Santa Cruz, Argentina

Recent Publications View all

  • Source
    [Show abstract] [Hide abstract]
    ABSTRACT: Resumen. Con estos aportes pretendemos dar a conocer los recursos virtuales más conocidos para poder iniciar una investigación de orden cualitativo usando como materia prima la narrativa de/sobre los videojuegos.
  • Source
    [Show abstract] [Hide abstract]
    ABSTRACT: Hibernation and daily torpor are two distinct forms of torpor, and although they are related, it is not known how and in which sequence they evolved. As the pattern of torpor expressed by the oldest marsupial order the opossums (Didelphimorphia) may provide insights into the evolution of torpor, we aimed to provide the first quantitative data on the thermal biology and torpor expression of the rare Patagonian opossum (Lestodelphys halli). It is the opossum with the southernmost distribution, has a propensity of autumnal fattening, and therefore, is likely to hibernate. We captured two male Lestodelphys, which while in captivity displayed strong daily fluctuations of body temperatures (Tb) measured with implanted miniature data loggers even when they remained normothermic. In autumn and early winter, torpor was expressed occasionally when food was available, but cold exposure and food withdrawal increased torpor use. The mean Tb throughout the study was 32.2 ± 1.4 °C, the minimum Tb measured in torpid Lestodelphys was 7.7 °C, average torpor bout duration was 10.3 h, and the maximum torpor bout duration was 42.5 h. Thus, the pattern of torpor expressed by Lestodelphys was intermediate between that of daily heterotherms and hibernators suggesting that it may represent an ancestral opportunistic torpor pattern from which the derived patterns of daily torpor and seasonal hibernation diverged.
    The Science of Nature 09/2013; 100(10). DOI:10.1007/s00114-013-1098-2
  • Source
    [Show abstract] [Hide abstract]
    ABSTRACT: The isomorphous title compounds, [Tr(S4O6)(C12H12N2)2]·2C3H7NO (Tr = Cd(II) and Zn(II)), consist of metal centres to which one tetrathionate and two 4,4'-dimethyl-2,2'-bipyridine chelating ligands bind. The structures are completed by two symmetry-related dimethylformamide solvent molecules. Each metal-centred complex is bisected by a twofold axis running through the metal centre and halving the chelating tetrathionate dianion through the central S-S bond. The ancillary symmetry-related 4,4'-dimethyl-2,2'-bipyridine ligands act as chelates. This results in a distorted six-coordinate geometry, with similar Tr-O/N distances but central angles differing substantially from 90 and 180°. Both ligands are basically featureless from a geometric point of view, with torsion angles in both coordinated tetrathionate groups suggesting a trend linking metal size (covalent radius) and ligand `openness'. Packing is directed by (C-H)aromatic...O bridges and π-π offset stacked interactions defining chains along [001], further linked by weaker (C-H)methyl...O bridges, some of them mediated by the dimethylformamide solvent molecules.
    Acta Crystallographica Section C Crystal Structure Communications 07/2013; 69(Pt 7):745-9. DOI:10.1107/S0108270113016521


  • Address
    Lisandro de la Torre 960, 9400, Río Gallegos, Provincia de Santa Cruz, Argentina
  • Website
  • Phone
    (02966) 442370 /76 /77
Information provided on this web page is aggregated encyclopedic and bibliographical information relating to the named institution. Information provided is not approved by the institution itself. The institution’s logo (and/or other graphical identification, such as a coat of arms) is used only to identify the institution in a nominal way. Under certain jurisdictions it may be property of the institution.

75 Members View all

View all

Top publications last week by reads

Developments in Quaternary Science 01/2008; 11:13-55. DOI:10.1016/S1571-0866(07)10003-8
13 Reads
WBPM 2012: Workshop Chileno de Business Process Management (BPM); 11/2012
11 Reads

Top Collaborating Institutions


This map visualizes which other institutions researchers from Universidad Nacional de la Patagonia Austral have collaborated with.

Rg score distribution

See how the RG Scores of researchers from Universidad Nacional de la Patagonia Austral are distributed.