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  • Miniatura
    Item type: Artículo ,
    A metapragmatic, stereotype-based account of reclamation
    (Wiley, 2024-06)
    Lo Guercio, Nicolás Francisco
    ;
    Carranza, Fernando Martín
    Group-based slurs are words that express derogatory attitudes towards some group demarcated by a property that has historically caused social antagonism, e.g. gender or ethnicity, among others. Reclamation, in turn, is the process whereby a slur starts being used non-derogatorily by members of the target group in order to express a positive attitude. Some content-based theories of slurs (which pin the derogatory force of such terms on their conventional meaning) account for reclamation by arguing that it involves a change in meaning, so that reclaimed slurs are ambiguous. But these theories face a challenge, namely to account for the difference between reclaimed slurs and run-of-the-mill ambiguous terms, whose felicitous uses do not seem to be restricted to in-group speakers. In this article, we argue that the Reclamation Worry is not a problem for content-based theories of slurs by advancing an account of reclamation that is compatible with such views. As we shall argue, such theory must rely on the sociolinguistic dimension of such terms.
  • Miniatura
    Item type: Artículo ,
    Corrugated intimal surface of normal thoracic aorta in sheep
    (Elsevier, 2024-06)
    Calvo Sánchez, Natalia
    ;
    Rodríguez Largo, Ana
    ;
    Puzol, Leonor
    ;
    de Miguel, Ricardo
    ;
    Pérez, Estela
    The aortic lumen in healthy animals is characterized by a smooth, whitish surface, but sheep show macroscopic corrugation of the intimal surface in the thoracic aorta (TA). Our aim was to determine if this finding was pathological or physiological. Thirteen sheep aortas were included in this work together with aortas from bovines (n=3), goats (n=1), horses (n=4), dogs (n=2), rabbits (n=2), and pigs (n=1). In all sheep, a corrugated intimal surface in the TA was observed. Similar findings were seen in the goat and were less evident in cattle. Histologically, in sheep, the TA intimal surface showed multifocal bulging areas that protruded into the lumen. The outer half of the tunica media showed numerous, randomly distributed muscle islands, that disrupted the arrangement of the elastic lamella, displacing these elements towards the lumen. The intimal corrugation of the TA in sheep is physiologic and must not be misinterpreted with pathology.
  • Miniatura
    Item type: Artículo ,
    Primer registro de tityus bahiensis perty 1834 (scorpiones: buthidae) en la provincia de Mendoza, Argentina
    (Sociedad Zoológica del Uruguay, 2024-01)
    Jannello, Juan Marcos
    ;
    López, Carlos Ariel
    Tityus bahiensis no presenta registros de escorpionismo graves en Argentina, si lo hace en Brasil. En Argentina T. bahiensis se conoce en las provincias de Corrientes, Misiones, Chaco, Entre Ríos, Buenos Aires y Santa Fe, con algunas recurrencias a lo largo de los ríos Paraná y Uruguay. En este caso reportamos un ejemplar vivo en la ciudad de San Rafael, Mendoza.
  • Miniatura
    Item type: Artículo ,
    The young open cluster NGc 1981
    (Sociedad Argentina de Biología, 2024-01)
    Braz, P. H. F. B.
    ;
    Corradi, W. J. B
    ;
    Katime Santrich, O. J.
    ;
    Ferreira, F. A
    ;
    Angelo, M. S.
    An stellar cluster is a gravitationally bound group of stars that present a common origin, so that its members have similar age, kinematics and chemical composition. The study of young clusters help to constrain the formation and evolution models as well as the Galatic disc properties. Open clusters in the embedded phase form at a rate that exceeds by more than an order of magnitude the forming rate of optically visible clusters, indicating that these young systems have a very low chance of survival. NGC 1981 is a young cluster, located 1◦ north of the Orion Nebula in the Galactic coordinates (l,b) = (208.9, -18.98). Although NGC 1981 is in a region of intense star formation, with several clouds of gas and dust, it presently inhabits a relatively dust-free field, perhaps as a consequence of its own evolution. Aiming to better understand the star formation in Orion, we have studied NGC 1981, which has been classified with two conflicting ages (30 and 5 Myrs). GAIA DR2 and EDR3 photometry and astrometry, medium resolution spectroscopy collected at CASLEO and OPD, have been analysed with our astrometric decontamination method and together with the radial velocity of the cluster members to dertermine, with better precision, the astrophysical parameters of NGC1981 and its neighbour cluster NGC 1977, which is contaminating spatially and astrometrically NGC 1981. Our analysis has revealed that NGC 1981 and NGC 1977 are indeed young, 8 Myrs and 4 Myrs old, respectively. These findings reinforce the scenario of sequential star formation in the Orion Nebula. The dispersion in the astrometric data of its members, suggest that NGC 1981 may be going through some disruptive processes and it is not expected to survive by more than a few million years.
  • Miniatura
    Item type: Artículo ,
    Bird species present in urban parks are more colorful than urban avoiders: a test in the Argentinian pampas
    (Elsevier, 2024-01)
    Leveau, Lucas Matias
    Bird plumage color has been assessed as a possible trait driving the presence of bird species in urban areas. Although some species can see the ultraviolet (UV) spectrum, the mentioned studies did not take into account UV reflectance when characterizing bird plumage. This study aimed to use a recent database of the colorfulness in passerines that incorporated the UV spectrum to compare bird colorfulness and other traits between urban parks and rural areas in central-east Argentina. Birds in urban parks were surveyed in 51 parks in six cities during breeding and non-breeding seasons. A list of Passeriformes species from parks was created, and a list of urban avoider species was created from the bibliography. Species traits were body mass, clutch size, migratory status, nesting site, diet and habitat breadth, and plumage colorfulness. A total of 85 species were detected in the regional pool, of which 30 species were detected in urban parks. Bird species present in urban parks were more colorful than bird species only present in rural areas. In addition, bird presence in urban parks was positively related to their regional frequency and diet breadth. Moreover, urban presence was related to nesting on trees and buildings, whereas species not present in urban parks nested on the ground. The results obtained showed that bird color is significantly associated with presence of bird species in urban parks.