Reseña del libro: Filo (en) rompecabezas. Búsqueda colectiva de la memoria histórica institucional (1966-1983) de Graciela Daleo et al (comp.)

Fil: Abbattista, Lucía. Universidad Nacional de La Plata. Facultad de Humanidades y Ciencias de la Educación. Instituto de Investigaciones en Humanidades y Ciencias Sociales (UNLP-CONICET); Argentina.

Franco Cardini et al. L'Europa del pellegrinaggio, Rimini: II Cerchio, 1998, 123 páginas

Fil: Disalvo, Santiago Aníbal. Universidad Nacional de La Plata. Facultad de Humanidades y Ciencias de la Educación; Argentina.

La formación docente en Educación Física : Estudio sobre las elecciones de los docentes de escuelas secundarias de La Plata ante la oferta de capacitación, durante el 2007 al 2009

La pregunta que orienta la propuesta de investigación es ¿Qué lugar ocupa la participación de los docentes en el diseño las políticas de capacitación? ¿Cuáles son los aspectos que inciden en la elección de la oferta de capacitación? La intención es analizar los factores que inciden en la elección de la oferta de capacitación estatal y/o privada, que realizan los docentes del área Educación Física pertenecientes al sector estatal, que se desempeñan en escuelas medias del distrito de La Plata. Son considerados los aportes de los estudios sobre saber docente, el proceso de análisis de las políticas públicas, las regulaciones del trabajo docente y la institucionalización de ciertas modalidades de capacitación. Desde un enfoque cualitativo, la estrategia metodológica utilizará fuentes de datos orales y documentales, a través de entrevistas en profundidad y análisis de documentos que regulan la capacitación en la provincia

Reseña del libro: Filo (en) rompecabezas. Búsqueda colectiva de la memoria histórica institucional (1966-1983) de Graciela Daleo et al (comp.)

Fil: Alvarez, Victoria. Universidad Nacional de La Plata. Facultad de Humanidades y Ciencias de la Educación; Argentina.

Franco Cardini et al. L'Europa del pellegrinaggio, Rimini: II Cerchio, 1998, 123 páginas

Fil: Disalvo, Santiago Aníbal. Universidad Nacional de La Plata. Facultad de Humanidades y Ciencias de la Educación; Argentina.

Particle flux studies of sediment traps from the northern and equatorial Indian Ocean

The Asian monsoon system governs seasonality and fundamental environmental characteristics in the study area from which two distinct peculiarities are most notable: upwelling and convective mixing in the Arabian Sea and low surface salinity and stratification in the Bay of Bengal due to high riverine input and monsoonal precipitation. The respective oceanography sets the framework for nutrient availability and productivity. Upwelling ensures high nitrate concentration with temporal/spatial Si limitation; freshwater-induced stratification leads to reduced nitrogen input from the subsurface but Si enrichment in surface waters. Ultimately, both environments support high abundance of diatoms, which play a central role in the export of organic matter. It is speculated that, additional to eddy pumping, nitrogen fixation is a source of N in stratified waters and contributes to the low-d15N signal in sinking particles formed under riverine impact. Organic carbon fluxes are best correlated to opal but not to carbonate, which is explained by low foraminiferal carbonate fluxes within the river-impacted systems. This observation points to the necessity of differentiating between carbonate sources for carbon flux modeling. As evident from a compilation of previously published and new data on labile organic matter composition (amino acids and carbohydrates), organic matter fluxes are mainly driven by direct input from marine production, except the site off Pakistan where sedimentary input of (marine) organic matter is dominant during the NE monsoon. The explanation of apparently different organic carbon export efficiency calls for further investigations of, for example, food web structure and water column processes.

La formación docente en Educación Física : Estudio sobre las elecciones de los docentes de escuelas secundarias de La Plata ante la oferta de capacitación, durante el 2007 al 2009

La pregunta que orienta la propuesta de investigación es ¿Qué lugar ocupa la participación de los docentes en el diseño las políticas de capacitación? ¿Cuáles son los aspectos que inciden en la elección de la oferta de capacitación? La intención es analizar los factores que inciden en la elección de la oferta de capacitación estatal y/o privada, que realizan los docentes del área Educación Física pertenecientes al sector estatal, que se desempeñan en escuelas medias del distrito de La Plata. Son considerados los aportes de los estudios sobre saber docente, el proceso de análisis de las políticas públicas, las regulaciones del trabajo docente y la institucionalización de ciertas modalidades de capacitación. Desde un enfoque cualitativo, la estrategia metodológica utilizará fuentes de datos orales y documentales, a través de entrevistas en profundidad y análisis de documentos que regulan la capacitación en la provincia

Geochemical provenance analysis of fine-grained sediment of sediment core AND1-1

Bulk chemical fine-grained sediment compositions from southern Victoria Land glacimarine sediments provide significant constraints on the reconstruction of sediment provenance models in the McMurdo Sound during Late Cenozoic time. High-resolution (~ 1 ka) geochemical data were obtained with a non-destructive AVAATECH XRF Core Scanner (XRF-CS) on the 1285 m long ANDRILL McMurdo Ice Shelf Project (MIS) sediment core AND-1B. This data set is complemented by high-precision chemical analyses (XRF and ICP-OES) on discrete samples. Statistical analyses reveal three geochemical facies which are interpreted to represent the following sources for the sediments recovered in the AND-1B core: 1) local McMurdo Volcanic Group (MVG) rocks, 2) Transantarctic Mountain rocks west of Ross Island (W TAM), and 3) Transantarctic Mountain rocks from more southerly areas (S TAM). Data indicate in combination with other sediment facies analyses (McKay et al., 2009, doi:10.1130/B26540.1) and provenance scenarios (Talarico and Sandroni, 2009, doi:10.1016/j.gloplacha.2009.04.007) that diamictites at the drill site are largely dominated by local sources (MVG) and are interpreted to indicate cold polar conditions with dry-based ice. MVG is interpreted to indicate cold polar condition with dry-based ice. A mixture of MVG and W TAM is interpreted to represent polar conditions and the S TAM facies is interpreted to represent open-marine conditions. Down-core variations in geochemical facies in the AND-1B core are interpreted to represent five major paleoclimate phases over the past 14 Ma. Cold polar conditions with major MVG influence occur below 1045 mbsf and above 120 mbsf. A section of warmer climate conditions with extensive peaks of S TAM influence characterizes the rest of the core, which is interrupted by a section from 525 to 855 mbsf of alternating influences of MVG and W TAM.

Radiocarbon ages and clay minerals in sediment cores obtained during a 2009 Jan Mayen cruise to the Norwegian Sea

The origin of two acoustic sediment units has been studied based on lithological facies, chronology and benthic stable isotope values as well as on foraminifera and clay mineral assemblages in six marine sediment cores from Kveithola, a small trough west of Spitsbergenbanken on the western Barents Sea margin. We have identified four time slices with characteristic sedimentary environments. Before c. 14.2 cal. ka, rhythmically laminated muds indicate extensive sea ice cover in the area. From c. 13.9 to 14.2 cal. ka, muds rich in ice-rafted debris were deposited during the disintegration of grounded ice on Spitsbergenbanken. From c. 10.3 to 13.1 cal. ka, sediments with heterogeneous lithologies suggest a shifting influence of suspension settling and iceberg rafting, probably derived from a decaying Barents Sea Ice Sheet in the inner-fjord and land areas to the north of Kveithola. Holocene deposition was episodic and characterized by the deposition of calcareous sands and shell debris, indicative of strong bottom currents. We speculate that a marked erosional boundary at c. 8.2 cal. ka may have been caused by the Storegga tsunami. Whilst deposition was sparse during the Holocene, Kveithola acted as a sediment trap during the preceding deglaciation. Investigation of the deglacial sediments provides unprecedented details on the dynamics and timing of glacial retreat from Spitsbergenbanken.