Reflexiones en torno a la atención de la salud reproductiva de mujeres jóvenes en un hospital público de La Plata

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

Antecedents and outcomes of union loyalty:a constructive replication and an extension

Primary data obtained from unionized employees in Singapore were used to examine P. A. Bamberger, A. N. Kluger, and R. Suchard's (1999) integrative model of the antecedents and outcomes of union commitment. Structural equation modeling results revealed support for their integrative model. Specifically, the results revealed the influence of job satisfaction on union loyalty to be indirect through organizational commitment. However, the union-related antecedents (union socialization and union instrumentality) were both directly and indirectly related to union loyalty through pro-union attitudes. In addition, union loyalty was related to the individually and organizationally directed union citizenship behavior dimensions. Limitations of the study and implications of the findings are discussed.

Dapsone induces oxidative stress and impairs antioxidant defenses in rat liver

Dapsone (DDS) is currently used in the treatment of leprosy, malaria and in infections with Pneumocystis jirovecii and Toxoplasma gondii in AIDS patients. Adverse effects of DDS involve methemoglobinemia and hemolysis and, to a lower extent, liver damage, though the mechanism is poorly characterized. We evaluated the effect of DDS administration to male and female rats (30 mg/kg body wt, twice a day, for 4 days) on liver oxidative stress through assessment of biliary output and liver content of reduced (GSH) and oxidized (GSSG) glutathione, lipid peroxidation, and expression/activities of the main antioxidant enzymes glutathione peroxidase, superoxide dismutase, catalase and glutathione S-transferase. The influence of DDS treatment on express ion/activity of the main DDS phase-II- metabolizing system, UDP-glucuronosyltransferase (UGT), was additionally evaluated. The involvement of dapsone hydroxylamine (DDS-NHOH) generation in these processes was estimated by comparing the data in male and female rats since N-hydroxylation of DDS mainly occurs in males. Our studies revealed an increase in the GSSG/GSH biliary output ratio, a sensitive indicator of oxidative stress, and in lipid peroxiclation, in male but not in female rats treated with DDS. The activity of all antioxidant enzymes was significantly impaired by DDS treatment also in male rats, whereas UGT activity was not affected in any sex. Taken together, the evidence indicates that DDS induces oxidative stress in rat liver and that N-hydroxylation of DDS was the likely mediator. Impairment in the activity of enzymatic antioxidant systems, also associated with DDS-NHOH formation, constituted a key aggravating factor.

Earnings and hindsight bias:an experimental study

We conduct prediction experiments where subjects estimate, and later reconstruct probabilities of up-coming events. Subjects also value state-contingent claims on these events. We find that hindsight bias is greater for events where subjects earned more money

Spatio-temporal patterns and nutrient status of macroalgae in a heavily managed region of Biscayne Bay, Florida, USA

The coastal bays of South Florida are located downstream of the Florida Everglades, where a comprehensive restoration plan will strongly impact the hydrology of the region. Submerged aquatic vegetation communities are common components of benthic habitats of Biscayne Bay, and will be directly affected by changes in water quality. This study explores community structure, spatio-temporal dynamics, and tissue nutrient content of macroalgae to detect and describe relationships with water quality. The macroalgal community responded to strong variability in salinity; three distinctive macroalgal assemblages were correlated with salinity as follows: (1) low-salinity, dominated by Chara hornemannii and a mix of filamentous algae; (2) brackish, dominated by Penicillus capitatus, Batophora oerstedii, and Acetabularia schenckii; and (3) marine, dominated by Halimeda incrassata and Anadyomene stellata. Tissue-nutrient content was variable in space and time but tissues at all sites had high nitrogen and N:P values, demonstrating high nitrogen availability and phosphorus limitation in this region. This study clearly shows that distinct macroalgal assemblages are related to specific water quality conditions, and that macroalgal assemblages can be used as community-level indicators within an adaptive management framework to evaluate performance and restoration impacts in Biscayne Bay and other regions where both freshwater and nutrient inputs are modified by water management decisions.

Gamma-ray and neutrino fluxes from Heavy Dark Matter in the Galactic Center

We present a study of the Galactic Center region as a possible source of both secondary gamma-ray and neutrino fluxes from annihilating dark matter. We have studied the gamma-ray flux observed by the High Energy Stereoscopic System (HESS) from the J1745-290 Galactic Center source. The data are well fitted as annihilating dark matter in combination with an astrophysical background. The analysis was performed by means of simulated gamma spectra produced by Monte Carlo event generators packages. We analyze the differences in the spectra obtained by the various Monte Carlo codes developed so far in particle physics. We show that, within some uncertainty, the HESS data can be fitted as a signal from a heavy dark matter density distribution peaked at the Galactic Center, with a power-law for the background with a spectral index which is compatible with the Fermi-Large Area Telescope (LAT) data from the same region. If this kind of dark matter distribution generates the gamma-ray flux observed by HESS, we also expect to observe a neutrino flux. We show prospective results for the observation of secondary neutrinos with the Astronomy with a Neutrino Telescope and Abyss environmental RESearch project (ANTARES), Ice Cube Neutrino Observatory (Ice Cube) and the Cubic Kilometer Neutrino Telescope (KM3NeT). Prospects solely depend on the device resolution angle when its effective area and the minimum energy threshold are fixed.

Juegos Deportivos y Praxiología Motriz

Los juegos deportivos en el profesional de Educación Física, cuyas prácticas son cotidianas y múltiples en distintos ámbitos laborales, a pesar de su gran difusión social; aún no se lo reconoce como tal. Este espacio académico brinda la posibilidad de resignificarlos juegos deportivos, analizando hacia el interior de los mismos, las interacciones de las acciones motrices que se apropia ese jugador con el compañero y el adversario, enriqueciendo aspectos que atienden a los aprendizajes y competencias del sujeto social. El campo de conocimiento, Praxiología Motriz del autor Pierre Parlebas, permite a la Educación Física, analizar y estudiar situaciones de acuerdo a la saberes que se adquieren de las prácticas motrices, programando la puesta en escena de los intereses pedagógicos y estratégicos, para aplicarlo de manera practica en la cotidianeidad de nuestras clases. Las prácticas de los juegos deportivos, no debe ser un término excluyente en el profesional de Educación Física, son prácticas cotidianas en los distintos ámbitos laborales de nuestros profesionales, que presentan diversidad de aprendizajes en construcción, con significados culturales en todos los órdenes de la vida, transmisión de conocimientos que interactúan como el juego, el deporte y alfabetiza al actor social en la cultura deportiva

Diagnóstico integral de las condiciones de vida de un barrio de Villa Garibaldi (ciudad de La Plata)

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

Enseñanza de los deportes y gestión para poblaciones minoritarias

Desde el año 2012 se viene implementando el proyecto de fomento a la investigación Formación docente y ejercicio profesional del docente de educación física. Con un diseño cualitativo, interpretativo, esta investigación tiene el objetivo de conocer la relación entre las actuales demandas laborales del ejercicio profesional del docente de educación física y su formación de grado. Hoy nuestro equipo se encuentra trabajando en la producción de un escrito sobre temas que se desprenden del trabajo realizado durante la implementación del proyecto. En esta comunicación se presentan dos de esos temas: la enseñanza de los deportes de conjunto y la gestión en la educación física teniendo como destinatarios personas con necesidades especiales

Consideraciones metodológicas sobre la investigación socio educativa : Entrevistas y encuestas en una indagación sobre la escolarización de las elites

Fil: Martínez, María Elena. Universidad Nacional de La Plata. Facultad de Humanidades y Ciencias de la Educación; Argentina.