Search for dissertations about: "synergy"

Showing result 16 - 20 of 203 swedish dissertations containing the word synergy.

  2. 16. Oxidation, Creep and Fatigue Synergies in Cast Materials for Exhaust Manifolds

    Author : Shengmei Xiang; Joakim Odqvist; Baohua Zhu; Stefan Jonsson; Johan Ahlström; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Fatigue; low-cycle fatigue; fatigue in an inert atmosphere; fatigue in a synthetic diesel exhaust atmosphere; corrosion-fatigue; creep-fatigue; high-temperature corrosion; high-temperature fatigue; synergistic effect; corrosion-fatigue synergy; creep-fatigue synergy; high-temperature alloys; fatigue damage; creep-fatigue damage; corrosion-fatigue damage; ductile cast iron; high-alloyed austenitic cast steel; thermal cycling; precipitation; aging.; Teknisk materialvetenskap; Materials Science and Engineering;

    Abstract : The future development of engines of heavy-duty vehicles towards reduced CO2 emission will increase the exhaust gas temperature and render the exhaust atmosphere more corrosive. The current service material of exhaust gas components - a ferritic ductile cast iron called SiMo51 - will soon meet its upper-temperature limit. READ MORE

  4. 17. District heating in future Europe : Modelling expansion potentials and mapping heat synergy regions

    Author : Urban Persson; Sven Werner; Lars J. Nilsson; Sweden Gothenburg Chalmers University of Technology; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; district heating; energy efficiency; distribution capital cost; heat demand density; plot ratio; excess heat recovery; sequential energy supply; heat utilisation rate; effective width;

    Abstract : This thesis presents a set of methodologies and approaches to investigate and determine the extent by which district heating can contribute to improved energy system efficiency and reduced carbon dioxide emissions in future Europe. The main motivation for suggesting large-scale implementation of district heating as a structural energy efficiency measure to obtain these objectives originates essentially in the predicament that a majority of European buildings today remain highly dependent on fossil fuels to provide energy needed for space heating and hot water preparation. READ MORE

  5. 18. Multidisciplinary Design in Aeronautics, Enhanced by Simulation-Experiment Synergy

    Author : Tomas Melin; Arthur Rizzi; Jesper Oppelstrup; Ray Whitford; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Aeronautics; conceptual design; design; high lift systems; Vehicle engineering; Farkostteknik;

    Abstract : This thesis covers some aspects of current aircraft design, and presents how experiment and simulation are used as tools. Together they give enhanced effects over employing either one separately. The work presented has been produced using both simulations and experiments. READ MORE

  6. 19. Interactions between β-haemolytic streptococci and the human host. Heart, skin and beyond

    Author : Anna Bläckberg; Infektionsmedicin; []
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; β-haemolytic streptococci; Streptococcus dysgalactiae; Streptococcus pyogenes; Erysipelas; Infective endocarditis; Antibiotic synergy; Bacteraemia; Time to positivity;

    Abstract : Group C and G streptococci (GCS/GGS) and group A streptococci (GAS) belong to β-haemolytic streptococci (BHS). GCS/GGS can further be species determined to S. dysgalactiae, whereas S. pyogenes are GAS. READ MORE

  7. 20. Traceable Information Systems : Factors That Improve Traceability Between Information and Processes Over Time

    Author : Lena-Maria Öberg; Viveca Asproth; Per Flensburg; Mittuniversitetet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Traceability; Preservation of Information; Processes; Context; Synergy-4; Computer and systems science; Data- och systemvetenskap;

    Abstract : Preservation of information is not a new issue but preservation of digital information has a relatively short history. Since the 60’s when computers began to be used within administration, digital information that has had to be preserved over time.The problem addressed in this research is how to preserve understandable information over time. READ MORE