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Found 5 essays matching the above criteria.

  1. 1. Aluminium Nitride-containing Steels for High-Temperature Low-Pressure Carburizing Processes

    University essay from KTH/Materialvetenskap

    Author : Elias Nybacka Reiland; [2022]
    Keywords : ;

    Abstract : By increasing the temperature at which low-pressure carburizing is performed, the process time for production of case-hardened steels decrease but run a risk of abnormal grain growth occurring during carburizing. Particles present in the steel pin the grain boundaries and can prevent this growth depending on their size and volume fraction. READ MORE

  3. 2. Erosion Behaviour of Thermal Barrier Coatings

    University essay from Linköpings universitet/Konstruktionsmaterial

    Author : Caroline Wännman; [2021]
    Keywords : erosion; TBC; APS; EB-PVD; PS-PVD; failure mechanisms;

    Abstract : Thermal barrier coatings (TBCs) are advanced material systems used in the hot sections of gas turbines. The TBCs are designed to provide insulation against hot gases by a ceramic top coat and to provide oxidation and corrosion resistance by a metallic bond coat. READ MORE

  4. 3. A study on Extraction of Natural Cities from the Nightlight Imagery Using Head/tail breaks method

    University essay from Avdelningen för Industriell utveckling, IT och Samhällsbyggnad

    Author : Sirui Wu; [2013]
    Keywords : nightlight imagery; extraction of natural cities; head tail break; threshold; power law;

    Abstract : With the high development of economic and demand for city research, an issue of detecting city boundaries plays an extremely important role in urbanization that promotes the progress of human civilization. Some critical applications such as land use, urban planning and city sprawl have been constantly discussed, which rely on the acquisition of city areas. READ MORE

  5. 4. Mud volcanoes : a review

    University essay from Lunds universitet/Geologiska institutionen

    Author : Maria Åkesson; [2008]
    Keywords : mud volcanism; mud volcanoes; methane; climate dynamics; LUSI; Earth and Environmental Sciences;

    Abstract : Mud volcanoes are pathways through and within which buried argillaceous loose sediments and lithified rocks are altered and transported back to the Earth’s surface. The types of mechanisms of formation, maintenance and triggering of this natural, sedimentary recycling-process vary largely whereby external as well as internal properties of mud volcanoes differ greatly. READ MORE

  6. 5. Variations in the energy budget above growing wheat and barley, Ilstorp 1998 : a gradient-profile approach

    University essay from Lunds universitet/Institutionen för naturgeografi och ekosystemvetenskap

    Author : Carin Kjellander; [1999]
    Keywords : geomorphology; physical geography; logarithmic wind profile; atmospheric boundaries; heat flow; climatological processes; pedology; cartography; climatology; naturgeografi; geomorfologi; marklära; kartografi; klimatologi; Earth and Environmental Sciences;

    Abstract : Fluxes of sensible heat and latent heat were calculated above fields of barley and wheat in Ilstorp, using a gradient profile approach. Gradient Richardson’s number was used as the stability parameter, and it was shown that atmospheric stability varies both with time of the day and wind speed. READ MORE