62 research outputs found

    ASSESSMENT OF BURNABLE ABSORBER FUEL DESIGN BY UWB1 DEPLETION CODE

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    UWB1 depletion code is being developed as a fast computational tool for the study of burnable absorbers in University of West Bohemia in Pilsen, Czech Republic. Research of fuel depletion aims at development and introduction of advanced types of burnable absorbers in nuclear fuel. Burnable absorbers compensate for the initial excess reactivity and consequently allow for lower power peaking factors and longer fuel cycles with higher fuel enrichments. The paper describes the depletion calculations of CANDU, PWR and SFR nuclear fuel doped with rare earth oxides as burnable absorber. Uniform distribution of burnable absorber in the fuel is assumed. Based on performed depletion calculations, rare earth oxides are divided into two groups, suitable burnable absorbers and poisoning absorbers. Moreover, basic economic comparison is performed based on actual stock prices

    CALCULATION UNCERTAINTIES IN SPENT FUEL INVENTORY DETERMINATION

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    In the depletion calculation of the nuclear fuel, the uncertainty is of utmost importance, as it affects the uncertainty of the subsequent calculation, when the calculated composition is used. The calculations are even more important when they are safety related, e. g., when determining the reactivity or emissions of radioactivity to the environment. This work covers the depletion model of Gd-2M+ fuel which was developed in ORIGEN-ARP/TRITON calculation sequences, both being parts of a SCALE 6.2.1 package. The uncertainties of the respective calculation model were determined by comparison with experimental data for both calculation sequences. The effects of operational and manufacturing uncertainties on concentration of the most important nuclides using TRITON depletion model of Gd-2M+ fuel were determined. The effect of respective uncertainties manifested in changes of composition on the multiplication factor using Monte-Carlo sequence KENO-VI were also specified

    Neferhotep’s tomb (TT49) funerary chapel: advances in the documentation process

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    En el marco de la Misión Argentina en Luxor, se llevó a cabo una nueva documentación fotográfica y digitalización de la iconografía de la tumba tebana TT49 perteneciente a Neferhotep, quien fuera funcionario bajo el reinado de Ay. En la campaña de 2018 la documentación de epigrafía se focalizó en los cuatro pilares de la capilla funeraria del monumento y se tomaron nuevas fotografías para actualizar el material disponible y proceder a su dibujo digital. Se considera que el análisis de los dibujos digitales y observaciones realizadas durante el proceso de copiado contribuyen al estudio de las especificidades de la tumba. El objetivo del presente trabajo es presentar el proceso de digitalización y las estrategias adoptadas para mejorar los dibujos a fin de contribuir al corpus documental y estilístico post-amarniano.As part of the tasks of the of the Argentine Mission in Luxor, new photographic documentation and digitalization of the iconography of the Theban tomb TT49, belonging to Neferhotep, was carried out. He was an officer under Ay’s reign. During the 2018 fieldwork, the epigraphic documentation focused on the four pillars of the funerary chapel. The team took new pictures to update the available photographic material and to work on their digital drawings. The analysis of digital drawings and observations made during the copy process contributes to the study of the tomb´s specificities. The aim of this paper is to present the digitalization process and the strategies used to improve the drawings in order to contribute to the post-amarnian documentary and stylistic corpus

    Creación y recreación de imágenes en la capilla de Neferhotep

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    La tumba de Neferhotep (TT49) se encuentra ubicada en la necrópolis tebana de los nobles en el-Khokha Su datación corresponde al reinado de Ay (fines de la dinastía XVIII) y su propietario fue un funcionario de Amón en el templo de Karnak. El monumento es un exponente de las tumbas de época post-Amarna, y su estructura, iconografía e inscripciones jeroglíficas aportan elementos para reconstruir los cambios operados en el marco de la restauración que puso fin a la reforma política y religiosa de Amarna. En este trabajo se presentan interpretaciones a partir de la reciente limpieza de las pinturas murales que permite una mejor visibilidad de las escenas que decoran los cuatro pilares ubicados en la capilla funeraria del monumento. En el análisis se consideran distintos niveles de relaciones topográficas, como disposición y orientación de las caras de los pilares que dan soporte a las escenas y de sus componentes, temática iconográfica de cada pilar y diálogo entre los registros que los componen. Para ello se tendrán en cuenta: prácticas rituales funerarias y de presentación de ofrendas divinas por parte del propietario de la tumba en relación a la celebración de la Bella Fiesta del Valle, considerando que estas actividades se realizaban dentro del microespacio que representaba la tumba y que formaron parte de su programa decorativo con el fin de proporcionar al difunto los elementos requeridos para su eterna renovación.La tumba de Neferhotep (TT49) se encuentra ubicada en la necrópolis tebana de los nobles en el-Khokha Su datación corresponde al reinado de Ay (fines de la dinastía XVIII) y su propietario fue un funcionario de Amón en el templo de Karnak. El monumento es un exponente de las tumbas de época post-Amarna, y su estructura, iconografía e inscripciones jeroglíficas aportan elementos para reconstruir los cambios operados en el marco de la restauración que puso fin a la reforma política y religiosa de Amarna. En este trabajo se presentan interpretaciones a partir de la reciente limpieza de las pinturas murales que permite una mejor visibilidad de las escenas que decoran los cuatro pilares ubicados en la capilla funeraria del monumento. En el análisis se consideran distintos niveles de relaciones topográficas, como disposición y orientación de las caras de los pilares que dan soporte a las escenas y de sus componentes, temática iconográfica de cada pilar y diálogo entre los registros que los componen. Para ello se tendrán en cuenta: prácticas rituales funerarias y de presentación de ofrendas divinas por parte del propietario de la tumba en relación a la celebración de la Bella Fiesta del Valle, considerando que estas actividades se realizaban dentro del microespacio que representaba la tumba y que formaron parte de su programa decorativo con el fin de proporcionar al difunto los elementos requeridos para su eterna renovación.Located in the Theban necropolis of the nobles at el-Khokha, the tomb of Neferhotep (TT49) dates from Ay’s reign, one of the last kings of the XVIIIth dynasty. Its owner was a functionary of the Temple of Amon at Karnak. The monument is an exponent of post-Amarna tombs and its decoration, structure, iconography, and hieroglyphic inscriptions contribute to understanding the changes undergone during restoration after Amarna’s political and religious reform. This paper discusses interpretations based on updated digital drawings of the four pillars located in the monument’s funerary chapel, following its recent cleaning. For this analysis, different levels of topographical relation, the arrangement and orientation of the pillars, the iconographic themes of each pillar, and the dialogue between their inscriptions were considered. The study also observed the funerary ritual practices and the delivery of divine offerings by the tomb owner during the Beautiful Feastival of the Valley, as these activities were carried out inside the micro-space represented by the tomb and were part of the decorative program aimed at giving offerings to the dead for their eternal renewal.La tumba de Neferhotep (TT49) se encuentra ubicada en la necrópolis tebana de los nobles en el-Khokha Su datación corresponde al reinado de Ay (fines de la dinastía XVIII) y su propietario fue un funcionario de Amón en el templo de Karnak. El monumento es un exponente de las tumbas de época post-Amarna, y su estructura, iconografía e inscripciones jeroglíficas aportan elementos para reconstruir los cambios operados en el marco de la restauración que puso fin a la reforma política y religiosa de Amarna. En este trabajo se presentan interpretaciones a partir de la reciente limpieza de las pinturas murales que permite una mejor visibilidad de las escenas que decoran los cuatro pilares ubicados en la capilla funeraria del monumento. En el análisis se consideran distintos niveles de relaciones topográficas, como disposición y orientación de las caras de los pilares que dan soporte a las escenas y de sus componentes, temática iconográfica de cada pilar y diálogo entre los registros que los componen. Para ello se tendrán en cuenta: prácticas rituales funerarias y de presentación de ofrendas divinas por parte del propietario de la tumba en relación a la celebración de la Bella Fiesta del Valle, considerando que estas actividades se realizaban dentro del microespacio que representaba la tumba y que formaron parte de su programa decorativo con el fin de proporcionar al difunto los elementos requeridos para su eterna renovación

    Mathematically Gifted Adolescents Have Deficiencies in Social Valuation and Mentalization

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    Many mathematically gifted adolescents are characterized as being indolent, underachieving and unsuccessful despite their high cognitive ability. This is often due to difficulties with social and emotional development. However, research on social and emotional interactions in gifted adolescents has been limited. The purpose of this study was to observe differences in complex social strategic behaviors between gifted and average adolescents of the same age using the repeated Ultimatum Game. Twenty-two gifted adolescents and 24 average adolescents participated in the Ultimatum Game. Two adolescents participate in the game, one as a proposer and the other as a responder. Because of its simplicity, the Ultimatum Game is an apt tool for investigating complex human emotional and cognitive decision-making in an empirical setting. We observed strategic but socially impaired offers from gifted proposers and lower acceptance rates from gifted responders, resulting in lower total earnings in the Ultimatum Game. Thus, our results indicate that mathematically gifted adolescents have deficiencies in social valuation and mentalization

    Different Gain/Loss Sensitivity and Social Adaptation Ability in Gifted Adolescents during a Public Goods Game

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    Gifted adolescents are considered to have high IQs with advanced mathematical and logical performances, but are often thought to suffer from social isolation or emotional mal-adaptation to the social group. The underlying mechanisms that cause stereotypic portrayals of gifted adolescents are not well known. We aimed to investigate behavioral performance of gifted adolescents during social decision-making tasks to assess their affective and social/non-social cognitive abilities. We examined cooperation behaviors of 22 gifted and 26 average adolescents during an iterative binary public goods (PG) game, a multi-player social interaction game, and analyzed strategic decision processes that include cooperation and free-riding. We found that the gifted adolescents were more cooperative than average adolescents. Particularly, comparing the strategies for the PG game between the two groups, gifted adolescents were less sensitive to loss, yet were more sensitive to gain. Additionally, the behavioral characteristics of average adolescents, such as low trust of the group and herding behavior, were not found in gifted adolescents. These results imply that gifted adolescents have a high cognitive ability but a low ability to process affective information or to adapt in social groups compared with average adolescents. We conclude that gain/loss sensitivity and the ability to adapt in social groups develop to different degrees in average and gifted adolescents

    Data for: Increasing the efficiency of nuclear fuel using burnable absorbers

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    Burbable absober material optimization study results

    Data for: Increasing the efficiency of nuclear fuel using burnable absorbers

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    Burbable absober material optimization study results.THIS DATASET IS ARCHIVED AT DANS/EASY, BUT NOT ACCESSIBLE HERE. TO VIEW A LIST OF FILES AND ACCESS THE FILES IN THIS DATASET CLICK ON THE DOI-LINK ABOV

    Data for: Performance of ENDF/B-VIII.0 library for VVER reactors criticality safety, fuel depletion and reactor dosimetry applications

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    Results of the safety validation for VVER reactor applications.THIS DATASET IS ARCHIVED AT DANS/EASY, BUT NOT ACCESSIBLE HERE. TO VIEW A LIST OF FILES AND ACCESS THE FILES IN THIS DATASET CLICK ON THE DOI-LINK ABOV
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