Sökning: "Expansion"

Visar resultat 1 - 5 av 1641 avhandlingar innehållade ordet Expansion.

  1. 1. Methods and techniques for precise and accurate in-duct aero-acoustic measurements : Application to the area expansion

    Författare :Luck Peerlings; Susann Boij; Hans Bodén; Yves Aurégan; KTH; []
    Nyckelord :ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Area-expansion; Scattering matrix; Multi-microphone method; Engineering Mechanics; Teknisk mekanik;

    Sammanfattning : During the design and commissioning of combustion equipment, combustion associated instabilities are commonly encountered. These thermo-acoustic instabilities can cause undesirable noise, vibrations, local thermal and mechanical stresses in the combustor and are prominent in lean combustion. LÄS MER

  2. 2. Metal Expansion Penetration During Solidification of Grey Cast Iron

    Författare :Izudin Dugic; Linköpings universitet; []
    Nyckelord :ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Grey cast iron; solidification; solidification modelling; graphite expansion; molar volume; casting simulation; thennal analysis; thermoanalysis cup; casting temperature; inoculation; inoculant; meta! expansion penetration; eutectic cell size.; TECHNOLOGY; TEKNIKVETENSKAP;

    Sammanfattning : The meta! expansion penetration has been examined experimentally. The whole casting process was simulated using a commercial software, in order to investigate the solidification characteristics and the pore formation in the casting studied. LÄS MER

  3. 3. The Role of Chlamydophila Pneumoniae in the Inflammatory Response and Expansion of Abdominal Aortic Aneurysms

    Författare :Lars Karlsson; Håkan Pärsson; David Bergqvist; Janet Powell; Uppsala universitet; []
    Nyckelord :MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Abdominal aortic aneurysm; Chlamydophila pneumoniae; inflammation; aspirin; statin; expansion; randomised clinical trial; Vascular surgery; Kärlkirurgi; Surgery; kirurgi;

    Sammanfattning : Abdominal aortic aneurysm (AAA) is a common disease that develops gradually over several years and is characterised by weakening and dilatation of the aortic wall. AAAs also demonstrates a marked inflammatory infiltrate throughout the aortic wall. Chlamydophila pneumoniae (C. pneumoniae), is a common bacterium. LÄS MER

  4. 4. Higher education and family formation : A story of Swedish educational expansion

    Författare :Margarita Chudnovskaya; Juho Härkönen; Gunnar Andersson; Jan Van Bavel; Stockholms universitet; []
    Nyckelord :SOCIAL SCIENCES; SAMHÄLLSVETENSKAP; SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; education; educational expansion; childbearing; union formation; educational homogamy; Sociology; sociologi;

    Sammanfattning : The subject of this dissertation is trends in family formation among highly educated men and women in Sweden. The highly educated have typically differed from other educational groups in their patterns of childbearing. LÄS MER

  5. 5. The mechanisms of metal expansion penetration during solidification of grey cast iron

    Författare :Izudin Dugic; Preben Norgaard Hansén; Linköpings universitet; []
    Nyckelord :ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Grey cast iron; solidification; solidification modelling; graphite expansion; molar volume; casting simulation; thermal analysis; thermoanalysis cup; casting temperature; inoculation; inoculant; metal expansion penetration; eutectic cell size; primary austenite; austenite grain; TECHNOLOGY; TEKNIKVETENSKAP;

    Sammanfattning : The production of high quality castings requires the casting surface to be clean and free from defects. One type of defect often found is caused by metal penetration into the sand mould. LÄS MER