Sökning: "accelerated aging"

Visar resultat 6 - 10 av 25 uppsatser innehållade orden accelerated aging.

  1. 6. Thermal induced yellowing of peroxide bleached birch pulp

    Uppsats för yrkesexamina på avancerad nivå, Luleå tekniska universitet/Industriell miljö- och processteknik

    Författare :Alexander Nygren; [2020]
    Nyckelord :Accelerated ageing; Bleaching; Brightness reversion; Kraft pulp; pH; Yellowing;

    Sammanfattning : Brightness reversion, also known as yellowing, is a well-known phenomenon which means that the brightness of paper products decreases during ageing. The name of this phenomenon is based on that paper products usually change in color towards yellow during ageing. LÄS MER

  3. 7. Polygenic risk for schizophrenia and non-pathological cognitive aging

    Master-uppsats, Umeå universitet/Institutionen för psykologi

    Författare :Nasimeh Naseri; [2020]
    Nyckelord :Schizophrenia; polygenic risk; ageing; cognition; Schizofreni; poly-genetisk risk; åldrande; kognition;

    Sammanfattning : Schizophrenia is a severe psychiatric disorder associated with cognitive impairments. Polygenic risk for schizophrenia (SCZ-PGR) has been associated with poor performance in cognitive tasks, both in patients and in healthy individuals. It has also been suggested that schizophrenia is associated with accelerated aging. LÄS MER

  4. 8. CAE Sun Simulation - Thermo Structural Coupling

    Master-uppsats, KTH/Numerisk analys, NA

    Författare :Kristin Staffas; [2020]
    Nyckelord :Applied mathematics; Finite Difference Method; Sun simulation; Virtual customer behaviour; Tillämpad matte; Finita Differensmetoden; Solsimulering; Virtuellt kundbeteende;

    Sammanfattning : Deformation of materials due to heat exposure can be a challenge in vehicle design. Sun exposure and heat build up in the vehicle cabin contribute to accelerated aging of the materials used. To understand how this process affects the durability, numerical simulation is an important tool. LÄS MER

  5. 9. Varmt eller kallt LED-ljus -en jämförelse av två olika ljuskällor vid Microfadetest

    Kandidat-uppsats, Göteborgs universitet/Institutionen för kulturvård

    Författare :Stina Svantesson; [2019-02-01]
    Nyckelord :microfade test; MFT; lightfastness; LED-light; accelerated aging; colourchange; lighting policy;

    Sammanfattning : In the process of exhibition design, much importance is placed on lighting. This is partly to ensure the best preservation of the objects being displayed, but also to ensure they are lit well for the visitor. LÄS MER

  7. 10. The effects of accelerated aging on optical components : Application to vehicle camera systems

    Master-uppsats, Linköpings universitet/Institutionen för fysik, kemi och biologi

    Författare :Marina Baric; [2019]
    Nyckelord :Accelerated aging; adhesives; optical focus; tensile strength; Arrhenius; Eyring; Lawson; Peck;

    Sammanfattning : Companies providing products have many requirements, both from standards and customers, that they need to comply with in order to be able to sell their product. Veoneer AB is a leading automotive machine vision supplier, providing mono, stereo, night vision and driver monitoring systems consisting of both electronic, mechanical and optical components. LÄS MER