Sökning: "Per Petersson"

Visar resultat 11 - 15 av 38 avhandlingar innehållade orden Per Petersson.

1. 11. Impact of erosion and deposition processes on wall materials in tokamaks

   Författare :Sunwoo Moon; Marek Rubel; Per Petersson; Wolff Max; KTH; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Electrical Engineering; Elektro- och systemteknik;

   Sammanfattning : Understanding of material migration and control of fuel retention are essential for the safe operation of a reactor-class fusion machine. Work presented in the thesis focuses on erosion-deposition processes which are decisive for the formation and properties of co-deposited fuel-containing layers on plasma-facing and diagnostic components, and for the dust formation. LÄS MER

3. 12. Steel-to-timber dowel joints : Influence of moisture induced stresses

   Författare :Johan Sjödin; Hans Petersson; Carl-Johan Johansson; Per-Johan Gustavsson; Växjö universitet; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; constraint stresses; contact-free measurement; dowel-type joints; humidity variations; moisture-induced deformations; timber structures; Building engineering; Byggnadsteknik; Byggteknik; Civil engineering;

   Sammanfattning : Joints are critical parts of timber structures, transmitting static and dynamic forces between structural members. The ultimate behavior of a loaded building depends strongly on the structural configuration and the capacity of the joints. LÄS MER

4. 13. Material characterization for magnetically confined fusion : Surface analysis and method development

   Författare :Petter Ström; Marek Rubel; Per Petersson; Thierry Loarer; KTH; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Electrical Engineering; Elektro- och systemteknik;

   Sammanfattning : The dream of abundant clean energy has brought scientists and laypeople alike to ponder the possibilities of nuclear fusion since it was established as the energy source of the stars in 1939. Starting from the mid-twentieth century, significant effort has been put into overcoming the technological challenges related to the construction of a power plant, but initial optimism has faded somewhat due to a notable absence of practical outcomes. LÄS MER

5. 14. Material migration in tokamaks: Studies of deposition processes and characterisation of dust particles

   Författare :Armin Weckmann; Marek Rubel; Per Petersson; Daniel Primetzhofer; KTH; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; tokamak; fusion; plasma; material migration; particle transport; TEXTOR; PWI; plasma-wall interaction; plasma facing components; PFC; PFM; plasma facing materials; ALT limiter; MoF6; tracer experiment; molybdenum hexafluoride; future energy source; fuel retention; deuterium retention;

   Sammanfattning : Thermonuclear fusion may become an attractive future power source. The most promising of all fusion machine concepts is the tokamak. Despite decades of active research, still huge tasks remain before a fusion power plant can go online. One of these important tasks deals with the interaction between the fusion plasma and the reactor wall. LÄS MER

7. 15. Kommer du att döma mig om jag berättar? : ... om ungdomars sexuella beteende och utsatthet för våld

   Författare :Carina Petersson; Marie Oscarsson; Katarina Swahnberg; Ulla Peterson; Monica Christianson; Linnéuniversitetet; []
   Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Exchange students; health promotion; prevention; sexual behaviour; self-rated health; sexual and reproductive health and rights; young people; youth clinic; violence; Health and Caring Sciences; Hälsovetenskap;

   Sammanfattning : Background: In Sweden, youth sexual health is worse than that of other residents. Youth also report exposure to violence to a greater extent, threatening their health. LÄS MER