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PRESSURE DROP OF AN XADS-DF FUEL ELEMENT: COMPARISON BETWEEN ADVANCED FLUID-DYNAMIC NUMERICAL ANALYSES AND EXPERIMENTAL RESULTS
No full textA pilot application of Relap code to the steady state and transient analysis of a test section inside the BR2 reactor
No full textA type b(u) package to store and transport medical sources
No full textIn Italy for many years ENEA, asked by the Ministry of Health, in collaboration with NUCLECO S.p.a., has collected many sources of different radionuclides no more used in hospitals around the country, and many transport have been performed under special arrangement conditions. To improve the storage of those sources, from the safety and security point of view, and to easy the transport
it has been planned to design a Type B(U) package on the
base of the experience got in the past with the other Type B(U) models CF6 e CF66.
Since the package is intended to be used for a rather large number of content types we started with the easiest as well as the most urgent one: 440 brass capsules containing needles, plaques and tubes of Ra 226 with a total activity of 1,6 TBq. The dimensions on the package are based on the contents, storing constraints and a scale-up of the previous smaller packages which underwent to many drop and thermal tests in the past at the Scalbatraio laboratory in Pisa. Although we believe that a design based on scale-up criteria could be sufficient to comply with the IAEA transport regulation, we foresee a limited series of drop
tests to get details on the containment system behaviour to facilitate the design of the new structure needed to cope with its possible content alternative. In fact, while we are working to extract all the sources from several irradiators, with the collaboration of IAEA, it is likely that some irradiator must be transported as a
whole using the same packaging type.
The paper shows the storage requirements and all the steps carried out to prepare a safety report to get the package approval from the competent authority with the scale-up criteria and calculation
codes used for thermal, mechanical and shielding analyses
and the experimental planning for the drop test
Analisi acustiche nel poligono di tiro a segno nazionale di Pisa
No full textI poligoni di tiro a segno sono aree attrezzate utilizzate per svolgere esercitazioni di tiro con armi da fuoco. Il Poligono di Tiro a Segno Nazionale di Pisa confina a nordovest con il parco di Migliarino-San Rossore-Massaciuccoli, a nord-est con campi e ville private e a sud con varie scuderie; data la vicinanza dell’impianto con l’ippodromo di San Rossore e con le scuderie, tutta la zona è di rispetto ippico. Il Poligono fu costruito intorno al 1860 come struttura collegata alla Tenuta Reale, per l’esercitazione al tiro dei corpi militari e degli ospiti della Tenuta. Nel presente lavoro è riportata l’analisi acustica del nuovo impianto di tiro in galleria a 150 m. Il nuovo impianto sarà in grado di assicurare il rispetto delle norme tecniche di settore e un buon comfort acustico per gli spettatori e per il personale del Poligono
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
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