Sökning: "ADS"

Visar resultat 1 - 5 av 78 avhandlingar innehållade ordet ADS.

  1. 1. On measurement and monitoring of reactivity in subcritical reactor systems

    Författare :Carl Berglöf; Janne Wallenius; Vasily Arzhanov; Massimo Salvatores; KTH; []
    Nyckelord :NATURAL SCIENCES; NATURVETENSKAP; NATURVETENSKAP; NATURAL SCIENCES; reactor; ADS; accelerator-driven systems; subcriticality determination; noise techniques; pulsed neutron source; reactivity monitoring; Nuclear physics; Kärnfysik;

    Sammanfattning : Accelerator-driven systems have been proposed for incineration of transuranic elements from spent nuclear fuel. For safe operation of such facilities, a robust method for reactivity monitoring is required. Experience has shown that the performance of reactivity measurement methods in terms of accuracy and applicability is highly system dependent. LÄS MER

  2. 2. Fragment Mass Distributions in Neutron-Induced Fission of 232Th and 238U from 10 to 60 MeV

    Författare :Vasily Simutkin; Stephan Pomp; Franz-Josef Hambsch; Uppsala universitet; []
    Nyckelord :NATURAL SCIENCES; NATURVETENSKAP; NATURVETENSKAP; NATURAL SCIENCES; ADS; neutron-induced fission; intermediate neutron energies; fragment mass yield; Nuclear physics; Kärnfysik; Fysik med inriktning mot tillämpad kärnfysik; Physics with specialization in Applied Nuclear Physics;

    Sammanfattning : Since its discovery, the phenomenon of nuclear fission is the object of extensive theoretical and experimental studies. However, we are still far from a complete understanding of the fission process. LÄS MER

  3. 3. Inherent Safety Features and Passive Prevention Approaches for Pb/Bi-cooled Accelerator-Driven Systems

    Författare :Johan Carlsson; KTH; []
    Nyckelord :Inherent Safety; Passive Safety; Accelerator-Driven Systems; ADS; nuclear waste; emergency decay heat removal; natural convection; thermal radiation;

    Sammanfattning : This thesis is devoted to the investigation of passivesafety and inherent features of subcritical nucleartransmutation systems - accelerator-driven systems. The generalobjective of this research has been to improve the safetyperformance and avoid elevated coolant temperatures inworst-case scenarios like unprotected loss-of-ow accidents,loss-of-heat-sink accidents, and a combination of both theseaccident initiators. LÄS MER

  4. 4. On string integrability : A journey through the two-dimensional hidden symmetries in the AdS/CFT dualities

    Författare :Valentina Giangreco Marotta Puletti; Konstantin Zarembo; Gleb Arutyunov; Uppsala universitet; []
    Nyckelord :NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; String Theory; AdS-CFT correspondence; Integrable Field theory; Sigma models; S-matrix; Factorized Scattering; Physics; Fysik; Mathematical physics; Matematisk fysik; Theoretical Physics; teoretisk fysik;

    Sammanfattning : One of the main topics in the modern String Theory are the conjectured string/gauge (AdS/CFT) dualities. Proving such conjectures is extremely difficult since the gauge and string theory perturbative regimes do not overlap. In this perspective, the discovery of infinitely many conserved charges, i.e. LÄS MER

  5. 5. L'immagine pubblicitaria dell'olio d'oliva, della pasta e del caffè : uno studio comparativo sulla ricezione

    Författare :Christine Wikman; Italienska; []
    Nyckelord :HUMANIORA; HUMANITIES; semiotik; semantik; Grammatik; semiotics; syntax; semantics; Grammar; print ads; Advertising; Swedish; Italian; olive oil; comparative study; pasta; coffee; values; culturally specific patterns interpretation; connotations; sender; receiver; socio-cultural context; shared knowledge; implications; inferences; implicit information; co-operation; sender?s intended meaning encyclopaedic and cultural background knowledge; reception; Humaniora; Humanities; Applied linguistics; foreign languages teaching; sociolinguistics; Tillämpad lingvistik; undervisning i främmande språk; sociolingvistik; Italian language and literature; Italienska språk och litteratur ;

    Sammanfattning : The aim of this study is to describe how Italian advertising for olive oil, pasta and coffee reflects traditions, customs and culturally specific patterns regarding the ways in which these products are used in Italy, and how these culturally specific patterns are interpreted by native readers and non-native readers (Swedish students). The study is based on 22 Italian and 22 Swedish interpretations of three Italian print ads for olive oil, pasta and coffee. LÄS MER