80 research outputs found

    Tracking Subtle Stereotypes of Children with Trisomy 21: From Facial-Feature-Based to Implicit Stereotyping

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    Background: Stigmatization is one of the greatest obstacles to the successful integration of people with Trisomy 21 (T21 or Down syndrome), the most frequent genetic disorder associated with intellectual disability. Research on attitudes and stereotypes toward these people still focuses on explicit measures subjected to social-desirability biases, and neglects how variability in facial stigmata influences attitudes and stereotyping. Methodology/Principal Findings: The participants were 165 adults including 55 young adult students, 55 non-student adults, and 55 professional caregivers working with intellectually disabled persons. They were faced with implicit association tests (IAT), a well-known technique whereby response latency is used to capture the relative strength with which some groups of people—here photographed faces of typically developing children and children with T21—are automatically (without conscious awareness) associated with positive versus negative attributes in memory. Each participant also rated the same photographed faces (consciously accessible evaluations). We provide the first evidence that the positive bias typically found in explicit judgments of children with T21 is smaller for those whose facial features are highly characteristic of this disorder, compared to their counterparts with less distinctive features and to typically developing children. We also show that this bias can coexist with negative evaluations at the implicit level (with large effect sizes), even among professional caregivers

    A Metabolomic Approach to the Study of Wine Micro-Oxygenation

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    Wine micro-oxygenation is a globally used treatment and its effects were studied here by analysing by untargeted LC-MS the wine metabolomic fingerprint. Eight different procedural variations, marked by the addition of oxygen (four levels) and iron (two levels) were applied to Sangiovese wine, before and after malolactic fermentation

    MICROSTRUCTURE AND MECHANICAL BEHAVIOUR OF Al2O3 - ZrO2 (Y2O3) ORIENTED EUTECTICS

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    Des eutectiques orientés Al2O3-ZrO2 (Y2O3) préparés par solidification unidirectionnelle ont été étudiés. Leur microstructure, les interfaces entre les dispersoïdes de zircone et la matrice d'alumine ainsi que les surfaces de fracture ont été observées en microscopie électronique en transmission et en balayage.Oriented Al2O3-ZrO2 (Y2O3) eutectics prepared by directional solidification were studied. Microstructure features, interfaces between zirconia dispersoïds and the alumina matrix as well as fracture surfaces were observed by transmission and scanning electron microscopy

    Potential of Directionally Solidified Eutectic Ceramics for High Temperature Applications

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    International audienceDirectionally solidified eutectic (DSE) ceramics add new potentialities to the advantages of sintered ceramics: a higher strength, almost constant, up to temperatures close to the melting point and a better creep resistance. The microstructure of melt-growth composites (MGC) of ceramic oxides consists in three-dimensional and continuous interconnected networks of single-crystal eutectic phases. After solidification of binary eutectics, the eutectic phases are alumina and either a perovskite or garnet phase. In ternary systems, cubic zirconia is added as a third phase. For very high temperature structural applications such as turbine blades in future aeronautical turbines or thermal power generation systems, the investigation is focused on both binary (Al2O3-Y3Al5O12 (YAG), Al2O3-Er3Al5O12 (EAG) and Al2O3-GdAlO3 (GAP)) and ternary (Al2O3-YAG-ZrO2, Al2O3-EAG-ZrO2 and Al2O3-GAP-ZrO2) eutectics. Improving the strength and toughness of DSE ceramics being essential for such practical applications, results concerning the mechanical behavior of these eutectics will be reported after a short presentation concerning microstructure and crystallography. This better knowledge of DSE ceramics has led to the development of a specific Bridgman furnace to produce large crystals and investigate possible applications of DSE ceramics to a new generation of very high temperature gas turbines, e.g. hollow non-cooled nozzles, turbine blades or combustor liner panels

    Homogeneity-Related Problems in Solution Derived Powders

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