La conceptualización del cuerpo humano en el arte contemporáneo mendocino (desde los años 90 a la actualidad)

Mendoza como zona de producción dentro de las artes visuales genera discursos propios en torno al tema cuerpo. La corporalidad y la construcción conceptual del cuerpo traducen estéticas que ponen de manifiesto una historia y un sujeto-cuerpo-obra propio y autóctono. Con la implementación de las políticas neoliberales en los años 90 el ámbito de las artes visuales genera una eclosión de propuestas que traslucen una cierta desconfianza a ese aire festivo y relajado de la era menemista, el cuerpo se vuelve territorio para decir lo que muchos aprovechando el clima “liberal" no ven o miran sesgadamente. El cuerpo no sólo es un elemento de coacción, también es el espejo de una época signada por la fiesta y el despilfarro. En referencia al proceso de crisis que eclosiona en diciembre del 2001 surgirán nuevas formas de expresión y representación junto con ese sujeto político: las marchas con inclusión de performances, teatro-abierto, arte público, cacerolazos, pintadas, siluetas y el cuerpo como modo de significar e inscribirse en una lectura político-social. Mendoza no queda fuera de este marco, la intención es explicitar y ahondar sobre dicha problemática desde los distintos matices y diferencias exponiendo una realidad de la imagen-cuerpo en la Argentina. Logrando así el mayor entramado y conexiones posibles, tendientes a trazar una historia sobre el tema cuerpo dentro de las producciones artísticas locales en relación con las nacionales y Latinoamérica. Replanteando cómo y desde dónde se producen hechos artísticos que directa o indirectamente propician la intervención del cuerpo como expresión y concepto.

La crisis de los '90 y su impacto en la familia

El presente trabajo aborda la problemática acerca de la transformación de la estructura familiar durante la década de los ´90. Se propone desarrollar dicha problemática desde una perspectiva histórica, buscando dilucidar distintos aspectos mediante un análisis de información proveniente de diversas fuentes para poder lograr una profunda descripción del tema, tratándolo en toda su complejidad. Se analizan los diferentes tipos de familias y las distintas concepciones respecto al modo de ser familia, que varían en el tiempo debido a que suelen estar relacionadas a los modelos de acumulación. Es decir, se pretende analizar su relación con la estructura económica argentina, país dependiente dentro del sistema económico capitalista mundial. Así mismo, se analizará la incidencia sobre la estructura y dinámica familiar de diversos factores sociales, jurídicos e ideológicos.

Fernando Martin De Blassi, Consideraciones sobre la justicia en Tomás de Aquino, CEFIM – SS&CC Ediciones, Mendoza 2013 (Cuadernos Medievales de Cuyo 7), 166 pp., ISBN 978-950-9064-90-4

Fil: Peretó Rivas, Rubén.

Physics, geochemistry and bulk sedimentology on cores from the Peru Basin

Empirical relationships between physical properties determined non-destructively by core logging devices and calibrated by carbonate and opal measurements determined on discrete samples allow extraction of carbonate and opal records from the non-destructive measurements in biogenic settings. Contents of detrital material can be calculated as a residual. For carbonate and opal the correlation coefficients (r) are 0.954 and ?0.916 for sediment density, ?0.816 and 0.845 for compressional-wave velocity, 0.908 and ?0.942 for acoustic impedance, and 0.886 and ?0.865 for sediment color (lightness). Carbonate contents increase in concert with increasing density and acoustic impedance, decreasing velocity and lighter sediment color. The opposite is true for opal. The advantages of deriving the sediment composition quantitatively from core logging are: (i) sampling resolution is increased significantly, (ii) non-destructive data can be gathered rapidly, and (iii) laboratory work on discrete samples can be reduced. Applied to paleoceanographic problems, this method offers the opportunity of precise stratigraphic correlations and of studying processes related to biogenic sedimentation in more detail. Density is most promising because it is most strongly affected by changes in composition.

Geochemistry of Late Paleocene thermal maximum sediments

The late Paleocene thermal maximum (LPTM) was a dramatic, short-term global warming event that occurred ~55 Ma. Warming of high-latitude surface waters and global deep waters during the LPTM has been well documented; however, current data suggest that subtropical and tropical sea surface temperatures (SSTs) did not change during the event. Conventional paradigms of global climate change, such as CO2-induced greenhouse warming, predict greater warming in the high latitudes than in the tropics or subtropics but, nonetheless, cannot account for the stable tropical/subtropical SSTs. We measured the stable isotope values of well-preserved late Paleocene to early Eocene planktonic foraminifera from South Atlantic Deep Sea Drilling Project (DSDP) Site 527 to evaluate the subtropical response to the climatic and environmental changes of the LPTM. Planktonic foraminiferal d18O values at Site 527 decrease by ~0.94 per mil from pre-LPTM to excursion values, providing the first evidence for subtropical warming during the LPTM. We estimate that subtropical South Atlantic SSTs warmed by at least ~1°-4°C, on the basis of possible changes in evaporation and precipitation. The new evidence for subtropical SST warming supports a greenhouse mechanism for global warming involving elevated atmospheric CO2 levels.

Aerosols over the Arabian Sea

This paper provides an overview of dust transport pathways and concentrations over the Arabian Sea during 1995. Results indicate that the transport and input of dust to the region is complex, being affected by both temporally and spatially important processes. Highest values of dust were found off the Omani coast and in the entrance to the Gulf of Oman. Dust levels were generally lower in summer than the other seasons, although still relatively high compared to other oceanic regions. The Findlater jet, rather than acting as a source of dust from Africa, appears to block the direct transport of dust to the open Arabian Sea from desert dust source regions in the Middle East and Iran/Pakistan. Dust transport aloft, above the jet, rather than at the surface, may be more important during summer. In an opposite pattern to dust, sea salt levels were exceedingly high during the summer monsoon, presumably due to the sustained strong surface winds. The high sea salt aerosols during the summer months may be impacting on the strong aerosol reflectance and absorbance signals over the Arabian Sea that are detected by satellite each year.

Paleomagnetic of DSDP Leg 90

Sediments recovered during Leg 90 (Sites 587-594, plus Site 586 cored during Leg 89) are, in general, extremely weakly magnetized carbonate oozes and chalks with NRM intensities seldom greater than 0.05 µG. The quality of the paleomagnetic records deteriorates with increasing depth caused by the combined effects of removal of primary magnetic oxides by sulfate reduction processes and the dispersal of magnetic grains during compaction. Magnetic reversal sequences are generally recognizable back to the Gilbert, 3.4 to 5.35 m.y., except at equatorial Site 586 where only the Brunhes/Matuyama boundary could be identified. Longer reversal records were obtained at Site 588 (to Chron 13, about 13 m.y.) and Site 594 (base of Chron 5, about 5.9 m.y.). Sediments are characterized by extremely high calcium carbonate contents (90-100%) with almost no biosiliceous components. Blebs and streaks of pyrite are common, and the presence of iron sulfides with poor magnetic stabilities is suspected, although not yet positively identified. Viscous components of magnetization are common, sometimes to the extent of dominating the primary remanence, and there is evidence to suggest that a magnetic remanence is imparted during core recovery. Siliceous carbonate oozes provide better paleomagnetic records than pure carbonate oozes.

Composition of minerals and rocks from the Markov Deep, Central Atlantic

The paper presents materials on composition and texture of weakly serpentinized ultrabasic rocks from the western and eastern walls of the Markov Deep (5°30.6'-5°32.4'N) in the rift valley of the Mid-Atlantic Ridge. Predominant harzburgites with protogranular and porphyroclastic textures contain two major generations of minerals: the first generation composes the bulk of rocks and consists of Ol_89.8-90.4 + En_90.2-90.8 + Di_91.8 + Chr (Cr#32.3-36.6, Mg#67.2-70.0), while the second generation composes very thin branching veinlets and consists of PlAn_32-47 + Ol_74.3-77.1 + Opx_55.7-71.9 + Cpx_67.5 + Amph_53.7-74.2 + Ilm. Syndeformational olivine neoblasts in recrystallization zones are highly magnesian. Concentrations and covariations of major elements in harzburgites indicate that these rocks are depleted in mantle residues (high Mg# of minerals and whole-rock samples and low in CaO, Al2O3, and TiO2) that are significantly enriched in trace HFSE and REE (Zr, Hf, Y, LREE, and all REE). Mineralogy and geochemistry of harzburgites were formed by interaction of mantle residues with hydrous, strongly fractionated melts that impregnated them. Mineral composition of veinlets in harzburgites and mineralogical-geochemical characteristics of related plagiogranites and gabbronorites suggest that these plagiogranites were produced by melt residuals after crystallization of gabbronorites. Modern characteristics of harzburgites were shaped by the following processes: (i) partial melting of mantle material simultaneously with its subsolidus deformations, (ii) brittle-plastic deformations associated with cataclastic flow and recrystallization, and (iii) melt percolation along zones of maximal stress relief and interaction of this melt with magnesian mantle residue.