Sökning: "micrometer"

Visar resultat 11 - 15 av 56 uppsatser innehållade ordet micrometer.

  1. 11. Evaluating the interaction between CC-studs and pavement

    Uppsats för yrkesexamina på avancerad nivå, Uppsala universitet/Tillämpad materialvetenskap

    Författare :Elias Helou; [2019]
    Nyckelord :;

    Sammanfattning : Studded tyres are used in many countries around the world. Excessive wear of the road is the result when using studded tyres, and thus time of usage is limited or prohibited. A stud consists of a hard metal part enclosed in steel, aluminium, plastic or rubber, which is anchored in the tyre. LÄS MER

  3. 12. Processing of Sub-micrometer Features for Rear Contact Passivation Layer of Ultrathin Film Solar Cells Using Optical Lithography

    Kandidat-uppsats,

    Författare :Evelina Roxner; Ronja Olsmats Baumeister; [2019]
    Nyckelord :nanofabrication; optical lithography; photo lithography; line contacts; microfabrication; rear contact passivation; passivation layer; sub-micrometer features; thin film; ultra-thin film; solar cells; CIGS; aluminiumoxide;

    Sammanfattning : Thin film copper, indium, gallium, selenide (CIGS) solar cells are promising in the field of photovoltaic technology. To reduce material and fabrication cost, as well as increasing electrical properties of the cell, research is ongoing towards ultra-thin film solar cells (absorption layer thickness less than 500 nm). LÄS MER

  4. 13. Variations in hardness and microstructure in cartridge cases at annealing

    Master-uppsats, Karlstads universitet/Fakulteten för hälsa, natur- och teknikvetenskap (from 2013)

    Författare :Richard Ohlsson; [2018]
    Nyckelord :Hardness; Microstructure; Cartridge cases; Annealing;

    Sammanfattning : The thesis work is performed at Norma Precision AB, a company that manufactures ammunition for hunting and competitive shooting. Two types of cases called 300 Winchester Magnum and 308 Winchester are examined on how their hardness were prior to and after the two annealing’s of the neck they experience during the manufacturing. LÄS MER

  5. 14. Diffusion MRI of Brain Tissue: Importance of Axonal Trajectory

    Master-uppsats, Lunds universitet/Fysiska institutionen; Lunds universitet/Kärnfysik

    Författare :Jan Brabec; [2018]
    Nyckelord :dMRI; diffusion magnetic resonance; axonal trajectory; axonal geometry; undulations; modeling; axons; inverse problem; diffusion spectrum; time-dependent diffusion; Physics and Astronomy;

    Sammanfattning : Obtaining microstructural information non-invasively on brain tissue remains a challenge. Diffusion magnetic resonance imaging (dMRI) is an imaging method that can provide such information. That includes geometrical considerations of nerve cells projections, axons, that are present in the white matter of the human brain. LÄS MER

  7. 15. Mikroplast i behandlat lakvatten : En fallstudie med åtta avfallsanläggningar

    Uppsats för yrkesexamina på avancerad nivå, Uppsala universitet/Institutionen för geovetenskaper

    Författare :Victoria Eriksson Russo; [2018]
    Nyckelord :microplastic; leachate; landfills; plastic; Sweden; mikroplast; lakvatten; deponier; plast; Sverige;

    Sammanfattning : Forskare och myndigheter runt om i världen enas idag om att stora mängder mikroplast ackumuleras i världshaven och att dessa kan tas upp av olika levande organismer. Mikroplaster definieras ofta som plastpartiklar mindre än fem millimeter och kan härstamma från olika mänskliga aktiviteter. LÄS MER