67 research outputs found
Ségrégation intergranulaire des éléments de la famille du soufre dans le fer pur
Les mĂ©canismes de sĂ©grĂ©gation intergranulaire des Ă©lĂ©ments soufre, sĂ©lĂ©nium et tellure ont Ă©tĂ© Ă©tudiĂ©s en utilisant d'une part nos propres mesures de sĂ©grĂ©gation obtenues par rĂ©trodiffusion Ă©lastique d'ions accĂ©lĂ©rĂ©s dans le cas des Ă©lĂ©ments sĂ©lĂ©nium et tellure, d'autre part quelques rĂ©sultats de la littĂ©rature obtenus par spectroscopie Auger dans le cas des sĂ©grĂ©gations de soufre. L'ensemble des rĂ©sultats montre que la sĂ©grĂ©gation intergranulaire des trois mĂ©talloĂŻdes obĂ©it aux mĂȘmes lois. Il s'agit essentiellement d'une sĂ©grĂ©gation d'Ă©quilibre, rĂ©versible et activĂ©e thermiquement qui n'est pas modifiĂ©e par la prĂ©sence de carbone sĂ©grĂ©gĂ© aux joints de grains. Une Ă©quation gĂ©nĂ©rale est proposĂ©e. Elle permet de dĂ©crire nos rĂ©sultats ainsi que certains rĂ©sultats de la littĂ©rature
Phase transitions at surfaces, edges, and corners
Results of large-scale Monte Carlo simulations of three-dimensional Ising
models with edges and corners are reviewed. At the ordinary transition, angle
dependent critical exponents are observed, whereas at the surface transition
edge and corner critical exponents are non-universal and depend on the details
of the model. The results obtained at the surface transition are compared to
exact findings on critical two-dimensional Ising models with different types of
defect lines.Comment: 6 pages, 5 figure
âSuper disabilitiesâ vs âDisabilitiesâ?:Theorizing the role of ableism in (mis)representational mythology of disability in the marketplace
People with disabilities (PWD) constitute one of the largest minority groups with one in five people worldwide having a disability. While recognition and inclusion of this group in the marketplace has seen improvement, the effects of (mis)representation of PWD in shaping the discourse on fostering marketplace inclusion of socially marginalized consumers remain little understood. Although effects of misrepresentation (e.g., idealized, exoticized or selective representation) on inclusion/exclusion perceptions and cognitions has received attention in the context of ethnic/racial groups, the world of disability has been largely neglected. By extending the theory of ableism into the context of PWD representation and applying it to the analysis of the Weâre the Superhumans advertisement developed for the Rio 2016 Paralympic Games, this paper examines the relationship between the (mis)representation and the inclusion/exclusion discourse. By uncovering that PWD misrepresentations can partially mask and/or redress the root causes of exclusion experienced by PWD in their lived realities, it contributes to the research agenda on the transformative role of consumption cultures perpetuating harmful, exclusionary social perceptions of marginalized groups versus contributing to advancement of their inclusion
Evaluation of emergency department performance:A systematic review on recommended performance and quality-in-care measures
BACKGROUND: Evaluation of emergency department (ED) performance remains a difficult task due to the lack of consensus on performance measures that reflects high quality, efficiency, and sustainability. AIM: To describe, map, and critically evaluate which performance measures that the published literature regard as being most relevant in assessing overall ED performance. METHODS: Following the PRISMA guidelines, a systematic literature review of review articles reporting accentuated ED performance measures was conducted in the databases of PubMed, Cochrane Library, and Web of Science. Study eligibility criteria includes: 1) the main purpose was to discuss, analyse, or promote performance measures best reflecting ED performance, 2) the article was a review article, and 3) the article reported macro-level performance measures, thus reflecting an overall departmental performance level. RESULTS: A number of articles addresses this studyâs objective (nâ=â14 of 46 unique hits). Time intervals and patient-related measures were dominant in the identified performance measures in review articles from US, UK, Sweden and Canada. Length of stay (LOS), time between patient arrival to initial clinical assessment, and time between patient arrivals to admission were highlighted by the majority of articles. Concurrently, âpatients left without being seenâ (LWBS), unplanned re-attendance within a maximum of 72 hours, mortality/morbidity, and number of unintended incidents were the most highlighted performance measures that related directly to the patient. Performance measures related to employees were only stated in two of the 14 included articles. CONCLUSIONS: A total of 55 ED performance measures were identified. ED time intervals were the most recommended performance measures followed by patient centeredness and safety performance measures. ED employee related performance measures were rarely mentioned in the investigated literature. The studyâs results allow for advancement towards improved performance measurement and standardised assessment across EDs
Experimental access to Transition Distribution Amplitudes with the PÌANDA experiment at FAIR
Materials Modeling - a key for the Design of Advanced High Temperature Reactor Components
The safe and reliable performance of advanced fission plants is dependent on the choice of suitable materials and assessment of long-term materials degradation. These materials are degraded by their exposure to high temperatures, irradiation and a corrosive environment, therefore it is necessary to address the issue of long term damage evolution of materials under service exposure in advanced plants. A higher confidence in life-time assessments of these materials requires an understanding of the related physical phenomena on a range of scales from the microscopic level of single defect damage effects all the way up to macroscopic effects. To understand the many different phenomena present, such a study needs to encompass broad time and length scales starting from atomistic descriptions of primary damage formation and ending with a description of bulk property behaviour at the continuum limit. This paper discusses the multi-scale, multi-code simulations and multi-dimensional validation experiments undertaken to understand the mechanical properties of these materials. Such a multiscale modelling and experimental approach is envisaged and will probe beyond currently possible approaches to become a predictive tool in estimating lifetimes and mechanical properties of materials
Fragilité de revenu et ségrégations intergranulaires fragilisantes dans des aciers de type 20 CND 10-10; 2Úme partie : influence du molybdÚne.
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