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Visar resultat 21 - 25 av 946 avhandlingar som matchar ovanstående sökkriterier.

1. 21. Phase-field modeling of stress-induced precipitation and kinetics in engineering metals

   Författare :Claudio F. Nigro; Christina Bjerkén; Ylva Mellbin; Pär A T Olsson; Reinhart Pippan; Malmö universitet; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; phase-field theory; finite element method; corrosion; finite volume method; phase transformation; hydride; hydrogen embrittlement; linear elastic fracture mechanics;

   Sammanfattning : The formation of brittle compounds in metals operating in corrosive environments can be a tremendous source of embrittlement for industrial structures and such phenomenon is commonly enhanced in presence of stresses. To study this type of microstructural change modeling is preferred to experiment to reduce costs and prevent undesirable environmental impacts. LÄS MER

3. 22. Phase Change Phenomena During Fluid Flow in Microchannels

   Författare :Rashid Ali; Björn E Palm; Gian Piero Celata; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Microchannels; Boiling; Heat Transfer; Thermal energy engineering; Termisk energiteknik; SRA - Energy; SRA - Energi;

   Sammanfattning : Phase change phenomena of a fluid flowing in a micro channel may be exploited to make the heat exchangers more compact and energy efficient. Compact heat exchangers offer several advantages such as light weight, low cost, energy efficiency, capability of removing high heat fluxes and charge reduction are a few to mention. LÄS MER

4. 23. On the mechanism of heat transfer with phase change during impulse pressing of paper

   Författare :Marco F. C. Lucisano; KTH; []
   Nyckelord :Paper; High-intensity; Presses; Impulse drying; Heat transfer; Phase transitions; Heat-pipe effect; Steam; Delamination; Flashing; Permeability; Z direction;

   Sammanfattning : .... LÄS MER

5. 24. Phase change, surface tension and turbulence in real fluids

   Författare :Daniel Albernaz; Gustav Amberg; Minh Do-Quang; Shu Takagi; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Engineering Mechanics; Teknisk mekanik;

   Sammanfattning : Sprays are extensively used in industry, especially for fuels in internal combustion and gas turbine engines. An optimal fuel/air mixture prior to combustion is desired for these applications, leading to greater efficiency and minimal levels of emissions. LÄS MER

7. 25. Forskarstött förändringsarbete i själva verket : Att förbättra arbetssituationen för 15 000 brevbärare

   Författare :Anette Karltun Erlandsson; Jörgen Eklund; Gunnela Westlander; Kristina Håkansson; Linköpings universitet; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Interactive research; action research; work for change; participation; learning; intervention; ergonomics; man-technology-organization; interdisciplinary research; sociotechnical systems; human factors; systems perspective; Interaktiv forskning; aktionsforskning; socioteknik; human factors; systemperspektiv; förändringsarbete; participation; delaktighet; lärande; intervention; ergonomi; människa-teknik-organisation; tvärvetenskaplig forskning; Work sciences and ergonomics; Arbetsvetenskap och ergonomi;

   Sammanfattning : Denna avhandling belyser forskarstött förändringsarbete, inom ”Servicenätet Posten”, den division inom Posten Sverige AB som ansvarar för postdistribution till kunderna. Förändringsarbetet har handlat om att förbättra arbetssituationen för 15 000 brevbärare. LÄS MER