Sökning: "structural flexibility"

Visar resultat 1 - 5 av 180 avhandlingar innehållade orden structural flexibility.

  1. 1. Wheelset Structural Flexibility and Track Flexibility in Vehicle-Track Dynamic Interaction

    Författare :Nizar Chaar; Stefano Bruni; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Vehicle-track dynamic interaction; wheelset structural flexibility; Structural and vibration physics; Struktur- och vibrationsfysik;

    Sammanfattning : This thesis investigates the influence of wheelset structural flexibility and track flexibility on the vehicle-track dynamic interaction, mainly in terms of wheel-rail forces up to 200 Hz, using simulations and measurements. The previous knowledge in this field is first reviewed and summarized, then two case studies are selected for investigation. LÄS MER

  3. 2. Flexibility through Information Sharing : Evidences from the Automotive Industry in Sweden

    Författare :Nidal Dwaikat; Esmail Salehi-Sangari; Christos Tsinopoulos; KTH; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; information sharing; demand forecast; inventory data; volume flexibility; delivery flexibility; responsiveness; delivery performance; first-tier supplier; automotive Industry; PLS-SEM; Industriell ekonomi och organisation; Industrial Engineering and Management;

    Sammanfattning : Research has validated the contribution of information sharing to performance improvement. It has also suggested that flexibility is a highly important competitive priority for those companies where demand is volatile. Several studies argue that flexibility has been recognized as a key enabler for supply chain responsiveness. LÄS MER

  4. 3. Wheelset structural flexibility and vehicle-track dynamic interaction

    Författare :Nizar Chaar; KTH; []
    Nyckelord :wheelset; structural flexibility; modal analysis; vehicle-track interaction; wheel-rail forces; mathematical modelling; simulations; measurements;

    Sammanfattning : .... LÄS MER

  5. 4. Light’EM up! : structural characterization of light-driven membrane protein complexes by cryogenic electron microscopy

    Författare :André Tomás Graça; Wolfgang P. Schröder; Johannes Messinger; Karina Persson; Werner Kühlbrandt; Umeå universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; 3D reconstruction; Arabidopsis thaliana; assembly; chlorophyll; cryo-EM; cyanobacteria; Deinococus radiodurans; electron; land plants; membrane protein complexes; Photosystem II; proton; single-particle analysis; S-Layer Deinoxanthin Binding Complex SDBC ; water.; Biochemistry; biokemi; biologisk kemi; biological chemistry;

    Sammanfattning : Photosynthesis is probably the most important process for allowing life to develop into the diverse forms we see today. In this process, solar radiation is used to convert CO2 into biomass. From this process, we obtain oxygen to breathe, sources of food (plant biomass), and the potential for clean and sustainable energy. LÄS MER

  7. 5. Structural insights into the catalytic mechanism, protein dynamics, inhibition and thermostability of GH7 cellobiohydrolases

    Författare :Majid Haddad Momeni; Sveriges lantbruksuniversitet; Sveriges lantbruksuniversitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : Glycoside hydrolase family 7 cellobiohydrolases (GH7 CBH) are typically the most abundant enzymes of cellulolytic fungi and play a key role in biomass recycling in Nature, as well as in biofuel production from plant biomass. This thesis examines molecular properties of this biologically and industrially important class of enzymes. LÄS MER