Sökning: "ageing"

Visar resultat 1 - 5 av 505 avhandlingar innehållade ordet ageing.

  1. 1. Avoiding ageing Surface degradation of commercial electrode materials in lithium-ion batteries

    Detta är en avhandling från Uppsala : Acta Universitatis Upsaliensis

    Författare :Erik Björklund; Kristina Edström; Daniel Brandell; Reza Younesi; Frank Renner; [2019]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Li-ion battery; Ageing; Photoelectron spectroscopy; Nickel Manganese Cobalt Oxide;

    Sammanfattning : The battery market today expands rapidly, not least for electric vehicles. But to compete against the combustion engine, the cost of batteries must be reduced. After years of usage, the batteries degrade and need to be exchanged, increasing the cost over the vehicle lifecycle. LÄS MER

  2. 2. Ageing of Asphalt Mixtures Micro-scale and mixture morphology investigation

    Detta är en avhandling från Stockholm : KTH Royal Institute of Technology

    Författare :Prabir Kumar Das; Björn Birgisson; Nicole Kringos; Andreas Loizos; [2014]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Ageing; Aggregate packing; Atomic force microscopy; Asphalt mixture; Bitumen; Diffusion; Finite element analysis; Gradation; Micro-structure; Mixture morphology; Oxidative ageing; Surface ageing;

    Sammanfattning : There are many variables that affect the viscoelastic properties of asphalt mixtures with time, among which age hardening may be considered one of the important ones. Age hardening of asphalt mixtures is an irreversible process, which contributes to a reduction of the durability of pavements and eventually increases the maintenance cost. LÄS MER

  3. 3. Ageing well mobile ICT as a tool for empowerment of elderly people in home health care and rehabilitation

    Detta är en avhandling från Stockholm : KTH Royal Institute of Technology

    Författare :Anita Melander-Wikman; []

    Sammanfattning : The ageing of Europe's population is a crucial challenge for the 21st century. Today, the mean life expectancy in Sweden is 83 years for women and 78 for men. Ageing well is a frequently used process, describing the objectives of future elderly care and rehabilitation. LÄS MER

  4. 4. Effects of ageing on the mechanical properties of aluminium alloy AA 6063

    Detta är en avhandling från Stockholm : KTH Royal Institute of Technology

    Författare :Robert Gao; [2003]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; natural ageing; precipitation; stabilising ageing; APFIM; ageing; formability; al-mg-si; TEM; aa 6063; tensile strength;

    Sammanfattning : .... LÄS MER

  5. 5. Economic Aspects of Ageing

    Detta är en avhandling från Department of Economics, Lund Universtiy

    Författare :Paul Nystedt; [1998]
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; econometrics; Economics; Diffusion of Medical Technology; Social Networks; Time Allocation; Widowhood; Gender; Ageing; economic theory; economic systems; economic policy; Nationalekonomi; ekonometri; ekonomisk teori; ekonomiska system; ekonomisk politik;

    Sammanfattning : This thesis concerns economic aspects of ageing and investigates incentives and outcomes related to this process. The thesis is a collection of five essays. An introductory chapter provides an overall economic perspective of ageing. LÄS MER