Sökning: "usage rates"

Visar resultat 1 - 5 av 90 avhandlingar innehållade orden usage rates.

  1. 1. Evaluation of Swedish Ice Cleat Distribution Programs : From Program Design to Ice Cleat Use

    Författare :Robin Holmberg; Carl Bonander; Johanna Gustavsson; Mikael Svensson; Agneta Larsson; Karlstads universitet; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; program evaluation; ice cleats; anti-slip devices; usage rates; older adults; Risk and Environmental Studies; Risk- och miljöstudier;

    Sammanfattning : Winter conditions, characterized by snow and lowered temperatures, can make travel by foot difficult. Older adults aged 65 and above are especially at risk of slipping and falling on icy or snowy surfaces. Minor falls can result in severe injuries due to their frailty. LÄS MER

  3. 2. Rates and patterns of genome evolution in Lepidoptera

    Författare :Karin Näsvall; Niclas Backström; Simon Martin; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Chromosomal rearrangements; karyotype evolution; recombination rate; Lepidoptera; genome structure; molecular evolution; Biology with specialization in Evolutionary Genetics; Biologi med inriktning mot evolutionär genetik;

    Sammanfattning : The evolutionary consequences of genome restructuring and chromosomal rearrangements can be significant, but the underlying mechanisms are poorly understood. This thesis explores the relationships between genome restructuring, recombination, and maintenance of genetic diversity in different butterfly species. LÄS MER

  4. 3. Coreceptor usage and sensitivity to neutralization of HIV-1 and HIV-2

    Författare :Yu Shi; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :HIV-1; HIV-2; pathogenesis; neutralization; coreceptor usage; envelop sequence; glycosylation; U87.CD4 cells; GHOST 3 cells; CCR5; CXCR4;

    Sammanfattning : The aim of this project was to study neutralization and coreceptor use in HIV-1 and HIV-2. The first step was to develop a simple and standardized assay for detection and quantification of HIV- 1 neutralizing activity in human sera. LÄS MER

  5. 4. Microstructural changes in high strength steels exposed to large deformation and high strain rates

    Författare :Kristina Ryttberg; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; deformation mechanisms; high-velocity forming; high-velocity parting-off; adiabatic shear band; cold ring rolling; TEM; steel;

    Sammanfattning : Increasing steel prices and environmental aspects have put forward the demand to reduce material consumption and energy usage in manufacturing industry and near-net-shape manufacturing techniques have thus become increasingly important. High-velocity parting-off,high-velocity forming and cold ring rolling are three such manufacturing methods that exhibit great potentials in terms of material waste reduction. LÄS MER

  7. 5. Making the Transition to a ‘Green’ Vehicle Fleet : An analysis of the choice and usage effects of incentivising the adoption of low-emission vehicles

    Författare :Jake Whitehead; Anders Karlström; Joel Franklin; Simon Washington; Gunnar Isacsson; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Sammanfattning : Making the transition to a ‘green’ vehicle fleet is a noteworthy endeavour for any policy maker. Under the current global pressures of increasing greenhouse gas emissions there is no doubt that all efforts that can be adopted in order to improve the sustainability of our cities should be explored. LÄS MER