Search for dissertations about: "elements"

Showing result 1 - 5 of 2697 swedish dissertations containing the word elements.

  1. 1. Effect of water contamination on the diffused content of hydrogen under stress in AISI-52100 bearing steel

    University dissertation from Lund University (Media-Tryck)

    Author : Tajammal Imran; Lunds universitet.; Lund University.; [2005]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; vacuum technology; hydraulics; Mechanical engineering; materialteknik; Materiallära; Material technology; Hydrogen Diffusion; Rolling Element; Machine Elements; Tribology; Hydrogen Embrittlement; vibration and acoustic engineering; Maskinteknik; hydraulik; vakuumteknik; vibrationer; akustik;

    Abstract : Popular Abstract in Swedish Abstract Hydrogen embrittlement is a degradation process of mechanical/tribological properties (toughness, wear etc.) of mating steel surfaces. This is caused by the presence and interaction of hydrogen with applied stresses. READ MORE

  2. 2. Cognitive Radio Networks Elements and Architectures

    University dissertation from Karlskrona : Blekinge Institute of Technology

    Author : Alexandru Popescu; Blekinge Tekniska Högskola.; [2014]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; Cognitive radio network management; spectrum access; multiconstrained routing optimization; multi-dimensional adaptation; middleware;

    Abstract : As mobility and computing becomes ever more pervasive in society and business, the non-optimal use of radio resources has created many new challenges for telecommunication operators. Usage patterns of modern wireless handheld devices, such as smartphones and surfboards, have indicated that the signaling traffic generated is many times larger than at a traditional laptop. READ MORE

  3. 3. Periodic structures and lumped elements in microwave passives

    University dissertation from Karlskrona : Blekinge Institute of Technology

    Author : Dan Kuylenstierna; [2004]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Passive elements; Lumped elements; Photonic bandgap; Metamaterial; MMIC; Electromagnetic bandgap; Ferroelectric; Quadrature hybrid; Quadrature power splitter; Balun; Periodic structures;

    Abstract : The ambition of this work is the incorporation of ferroelectric varactors as tuneable elements in Si integrated circuits (ICs). This thesis presents partialfulfillments of the work. READ MORE

  4. 4. Transposable Elements in Neural Progenitor Cells

    University dissertation from Molecular Neurogenetics, Faculty of Medicine, Lund University

    Author : Liana Fasching; Lunds universitet.; Lund University.; Lunds universitet.; Lund University.; [2015]
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Transposable Elements; TRIM28; Epigenetic Regulation; Gene Expression; Neural Progenitor Cells;

    Abstract : Popular Abstract in English In an organism the DNA contains the entire biological information that is needed to be able to exist and function. Those segments, also known as DNA sequences are a genetic code, which is further packaged into units called genes. The entity of all genes is called genome. READ MORE

  5. 5. Analyses of Spur and Helical Gears

    University dissertation from Machine Elements, LTH, Box 118, 221 00 LUND

    Author : Anette Andersson; Lunds universitet.; Lund University.; [2002]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; vacuum technology; vibration and acoustic engineering; Maskinteknik; hydraulik; vakuumteknik; vibrationer; akustik; hydraulics; Teknik; Mechanical engineering; Technological sciences; misalignment; contact ratio; load distribution; transmission error; tooth contact analysis;

    Abstract : The thesis contains three papers that comprise studies of the dynamic behaviour of involute spur and helical gears, and one paper that describes a method to determine the influence of misalignment on the static helical gear tooth stress. In the first study, the influence of the contact ratio on the dynamic response of a spur gear was examined. READ MORE