Sökning: "ageing mechanism"

Visar resultat 1 - 5 av 46 avhandlingar innehållade orden ageing mechanism.

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

    Författare :Prabir Kumar Das; Björn Birgisson; Nicole Kringos; Andreas Loizos; KTH; []
    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. 2. Anti-Ageing Strategies : How to avoid failure in sodium-ion batteries

    Författare :Le Anh Ma; Reza Younesi; Daniel Brandell; Laurent Duda; Philipp Adelhelm; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; sodium-ion batteries; manganese-based cathodes; solid electrolyte interphase; ageing mechanism; Chemistry with specialization in Inorganic Chemistry; Kemi med inriktning mot oorganisk kemi;

    Sammanfattning : In order to move away from fossil fuels, batteries are one of the most important technologies to store energy from renewable sources. The rapid demands of battery applications put pressure on supply chains of raw materials, such as lithium, nickel, copper, aluminium and cobalt. LÄS MER

  4. 3. Ageing-associated changes of lysosomal compartment : implications on cellular functions

    Författare :Yuri Stroikin; Ulf Brunk; Alexei Terman; Karin Öllinger; Suresh Rattan; Linköpings universitet; []
    Nyckelord :LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES; Ageing; Apoptosis; Biological gabarge; Hormesis; Lipofuscin; Lysosome; Pathology; Patologi;

    Sammanfattning : The lysosomal compartment is a major site for intracellular degradation. Lysosomal degradation of the cell’s own constituents, so-called autophagy, not only provides a cell with nutrients, but also removes damaged and potentially dangerous endogenous structures, thus securing intracellular homeostasis. LÄS MER

  5. 4. Myonuclear Organization and Regulation of Muscle Contraction in Single Muscle Fibres : Effects of Ageing, Gender, Species, Endocrine Factors and Muscle Size

    Författare :Rizwan Qaisar; Lars Larsson; Jo Bruusgaard; Uppsala universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; single muscle cells; muscle nuclei; specific force; species; hypertrophy; mammals; ageing; gender; Physiology; Fysiologi;

    Sammanfattning : The skeletal muscle fibre is a syncitium where each myonucleus regulates the gene products in a finite volume of cytoplasm i.e., the myonuclear domain (MND). LÄS MER

  7. 5. Active Ageing a Path towards Ageing Well. Physical Functioning, Physical Activity, Falls Self-Efficacy and Social Participation in Community-Dwelling Elderly

    Författare :Hadeel Halaweh; Göteborgs universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Active ageing; Ageing well; Health-related quality of life; Physiotherapy; Qualitative analysis; Social roles;

    Sammanfattning : The overall aim of this thesis was to study factors of importance for active ageing with a focus on physical functioning, physical activity, falls self-efficacy, health-related quality of life and social participation in community-dwelling elderly above 60 years old. Methods: Study I (n=108) evaluated the psychometric properties of the Falls Efficacy Scale-International (Arabic version) (FES-I (Ar)) using validity and reliability testing. LÄS MER