Sökning: "Critical Current"

Visar resultat 11 - 15 av 799 avhandlingar innehållade orden Critical Current.

  1. 11. Bi-based high Tc superconductors and enhancement of critical current density

    Författare :Shi-ju Guo; Luleå tekniska universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Material Mechanics; Materialmekanik;

    Sammanfattning : Basic bulk high temperature superconductors in the Bi-Sr-Ca-Cu-O system and the BiPb-Sr-Ca-Cu-O system were prepared through the solid state reaction route and the coprecipitation method. The formation of 110 K phase promoted by partial Pb substitution for Bi was studied. Effects of heat treatment on 110K phase formation were studied. LÄS MER

  3. 12. Durability of Reinforced Concrete under Impressed Current Cathodic Protection

    Författare :Emma Zhang; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; durability; cathodic protection and prevention; anode system; service life; critical chloride content; Chloride initiated corrosion;

    Sammanfattning : Impressed current cathodic protection (ICCP) and prevention (ICCPre) are reliable and efficient techniques to stop, control and postpone corrosion in reinforced concrete structures. However, the wide application of this technique has been limited by the high cost of the anode system. LÄS MER

  4. 13. Critical potential and oxygen evolution of the chlorate anode

    Författare :Linda Nylén; Göran Lindbergh; Yohannes Kiros; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; chlorate; chloride oxidation; oxygen evolution; critical anode potential; chromate; DSA; mass transport; RDE; Chemical engineering; Kemiteknik;

    Sammanfattning : In the chlorate process, natural convection arises thanks to the hydrogen evolving cathode. This increases the mass transport of the different species in the chlorate electrolyte. There is a strong connection between mass transport and the kinetics of the electrode reactions. LÄS MER

  5. 14. Recontextualising ageing as a choice : A critical approach to representations of successful ageing

    Författare :Lame Maatla Kenalemang-Palm; Göran Eriksson; Sofia Strid; Maria Edström; Örebro universitet; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Cosmetic advertising; grey market; intersectionality; Multimodal Critical Discourse Analysis; neoliberalism; older women; postfeminism; successful ageing;

    Sammanfattning : This thesis examines the intersection between representations of ageing femininities, empowerment, and oppression in marketing and advertising practices, within the context of successful ageing. In the current era of population ageing, debates on gender and ageing are becoming more pronounced. LÄS MER

  7. 15. Finite Element Modelling of Eddy Current Non-Destructive Evaluation in Probability of Detection Studies

    Författare :Anders Rosell; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Eddy Current; Model Based Probability of Detection; Probability of Detection; Non-destructive Evaluation; Finite Element Modelling;

    Sammanfattning : The goal of this work has been to evaluate the possibility to use mathematical modelling to characterize the capability and reliability of automated eddy current inspections. The safety in aerospace propulsion is critical. Components that are critical for the operation are therefore designed to withstand material degradation. LÄS MER