193 research outputs found

    Tejiendo sustentabilidad social por medio de arte público en el Centro Histórico de Uruapan, Michoacán

    Get PDF
    Existen herramientas inusuales para contribuir hacia la construcción de hábitats sustentables y el arte público es una de ellas, ya que enriquece los espacios públicos con propuestas estéticas atractivas para la ciudadanía. En este trabajo se analiza la relación de la sustentabilidad y el arte público del artista Javier Marín que fue situado en distintos sitios del centro histórico de Uruapan, Michoacán, con el fin de identificar elementos creativos que puedan aprovecharse en otras localidades. En el trabajo se caracteriza a detalle el caso de estudio, sus elementos estructurales, particularidades y lógicas funcionales, se asocian los referentes teórico-conceptuales más relevantes sobre arte público, espacio urbano y sustentabilidad social para exponer el importante papel del arte público como herramienta para transformar espacios y dinámicas sociales, modificar los valores simbólicos de un lugar y configurar nuevos escenarios perceptuales. Se plantea el potencial del arte público como herramienta hacia el desarrollo sustentable de generar apropiación y crear símbolos identitarios que benefician las condiciones sociales y la calidad de vida.Consejo Nacional de Ciencia y Tecnologí

    Increased collagen production in fibroblasts cultured from irradiated skin and effect of TGF β1– clinical study

    Get PDF
    Fibrosis in normal tissues is a common and dose-limiting late complication of radiotherapy at many cancer sites, but its pathogenesis is poorly understood. We undertook a controlled study of the effect of irradiation on the collagen production of fibroblasts cultured from skin biopsies taken from patients undergoing radiotherapy treatment. Eight weeks after a single 8 Gy fraction using 300 kV X-rays, five patients treated at the Royal Marsden Hospital underwent biopsy of the irradiated site and of the contralateral, unirradiated body site. Fibroblasts from irradiated and control, unirradiated sites were cultured in vitro, and collagen production rates were measured during a 48-hour incubation under standardized conditions and in the presence and absence of transforming growth factor β1(TGF β1), 1 ng/ml, using HPLC. Collagen production was elevated in cells cultured from irradiated skin; median collagen production rates 61.16 pmoles hydroxyproline/105cells/hour in irradiated cells, 39.78 pmoles hydroxyproline/105cells/hour in unirradiated cells, P = 0.016 (Mann–Whitney U-test). In fibroblasts from unirradiated sites, collagen production rates were increased by the addition of TGF β1; however, in three of the cell lines cultured from irradiated sites this effect of TGF β1 on collagen production was not observed. © 2000 Cancer Research Campaig

    IFPA meeting 2016 workshop report I: Genomic communication, bioinformatics, trophoblast biology and transport systems

    Get PDF
    Workshops are an important part of the IFPA annual meeting as they allow for discussion of specialized topics. At IFPA meeting 2016 there were twelve themed workshops, four of which are summarized in this report. These workshops covered innovative technologies applied to new and traditional areas of placental research: 1) genomic communication; 2) bioinformatics; 3) trophoblast biology and pathology; 4) placental transport systems

    Socio-Economic Status and Pregnancy Outcome: An Australian Study

    Get PDF
    A prospective cohort of 8556 pregnant women attending the Mater Misericordiae Mothers' Hospital in Brisbane was examined to consider the impact of socio-economic status on pregnancy outcome. The indicators of socio-economic status selected were family income, maternal education and paternal occupational status. Pregnancy outcomes considered were preterm delivery, low birthweight, low birthweight for gestational age, and perinatal death. Subsidiary analyses were also undertaken for Apgar scores, time to establish respiration, need for mechanical respiration and admission to intensive care. Before adjustment, the main consistent association was between the occupational status of the father and three measures of perinatal morbidity. Initial adjustment for the mother's socio-demographic background and weight/height ratio reduced the strength and statistical significance of the above associations, while further adjustment for lifestyle variations between the three status groups further reduced the above associations to marginal statistical significance. The findings suggest that observed class differences in pregnancy outcome are attributable to the mother's personal characteristics (height/weight, parity) and her lifestyle

    Multi-Mission Radioisotope Thermoelectric Generator Heat Exchangers for the Mars Science Laboratory Rover

    Get PDF
    The addition of the Multi-Mission Radioisotope Thermoelectric Generator (MMRTG) to the Mars Science Laboratory (MSL) Rover requires an advanced thermal control system that is able to both recover and reject the waste heat from the MMRTG as needed in order to maintain the onboard electronics at benign temperatures despite the extreme and widely varying environmental conditions experienced both on the way to Mars and on the Martian surface. Based on the previously successful Mars landed mission thermal control schemes, a mechanically pumped fluid loop (MPFL) architecture was selected as the most robust and efficient means for meeting the MSL thermal requirements. The MSL heat recovery and rejection system (HRS) is comprised of two Freon (CFC-11) MPFLs that interact closely with one another to provide comprehensive thermal management throughout all mission phases. The first loop, called the Rover HRS (RHRS), consists of a set of pumps, thermal control valves, and heat exchangers (HXs) that enables the transport of heat from the MMRTG to the rover electronics during cold conditions or from the electronics straight to the environment for immediate heat rejection during warm conditions. The second loop, called the Cruise HRS (CHRS), is thermally coupled to the RHRS during the cruise to Mars, and provides a means for dissipating the waste heat more directly from the MMRTG as well as from both the cruise stage and rover avionics by promoting circulation to the cruise stage radiators. A multifunctional structure was developed that is capable of both collecting waste heat from the MMRTG and rejecting the waste heat to the surrounding environment. It consists of a pair of honeycomb core sandwich panels with HRS tubes bonded to both sides. Two similar HX assemblies were designed to surround the MMRTG on the aft end of the rover. Heat acquisition is accomplished on the interior (MMRTG facing) surface of each HX while heat rejection is accomplished on the exterior surface of each HX. Since these two surfaces need to be at very different temperatures in order for the fluid loops to perform efficiently, they need to be thermally isolated from one another. The HXs were therefore designed for high in-plane thermal conductivity and extremely low through-thickness thermal conductivity by using aluminum facesheets and aerogel as insulation inside a composite honeycomb core. Complex assemblies of hand-welded and uniquely bent aluminum tubes are bonded onto each side of the HX panels, and are specifically designed to be easily mated and demated to the rest of the RHRS in order to ease the integration effort

    What lies beneath? Reconstructing the primitive magmas fueling voluminous silicic volcanism using olivine-hosted melt inclusions

    Get PDF
    Understanding the origins of the mantle melts that drive voluminous silicic volcanism is challenging because primitive magmas are generally trapped at depth. The central Taupō Volcanic Zone (TVZ; New Zealand) hosts an extraordinarily productive region of rhyolitic caldera volcanism. Accompanying and interspersed with the rhyolitic products, there are traces of basalt to andesite preserved as enclaves or pyroclasts in caldera eruption products and occurring as small monogenetic eruptive centers between calderas. These mafic materials contain MgO-rich olivines (Fo79–86) that host melt inclusions capturing the most primitive basaltic melts fueling the central TVZ. Olivine-hosted melt inclusion compositions associated with the caldera volcanoes (intracaldera samples) contrast with those from the nearby, mafic intercaldera monogenetic centers. Intracaldera melt inclusions from the modern caldera volcanoes of Taupō and Okataina have lower abundances of incompatible elements, reflecting distinct mantle melts. There is a direct link showing that caldera-related silicic volcanism is fueled by basaltic magmas that have resulted from higher degrees of partial melting of a more depleted mantle source, along with distinct subduction signatures. The locations and vigor of Taupō and Okataina are fundamentally related to the degree of melting and flux of basalt from the mantle, and intercaldera mafic eruptive products are thus not representative of the feeder magmas for the caldera volcanoes. Inherited olivines and their melt inclusions provide a unique “window” into the mantle dynamics that drive the active TVZ silicic magmatic systems and may present a useful approach at other volcanoes that show evidence for mafic recharge

    “Further education, future prosperity? The Implications of Marketisation on Further Education Working Practices”

    Get PDF
    © 2017 Association for Research in Post-Compulsory Education (ARPCE). This paper examines how the marketised funding system of vocational further education is affecting lecturers’ working practices and professional integrity. Semi-structured interviews were conducted with a number of lecturing staff and managers within two vocational areas at an English FE college to examine the implications of working under the current funding regime. The conclusions drawn reflect the complexity of working within FE showing how lecturers are frequently placed in a professional dilemma between securing future funding (by ensuring high levels of retention and achievement) and compromising their professional integrity and working practices in order to do so. A key finding here was the inherent tension between professional integrity and funding requirements apparently directly opposing ‘good’ practice. This means FE professionals experience what Whitehead called ‘a living contradiction’ in their working lives, increasing stress levels and diminishing their sense of professionalism
    corecore