Sökning: "formation flight"
Visar resultat 1 - 5 av 43 avhandlingar innehållade orden formation flight.
1. Flight strategies in migrating birds: when and how to fly
Sammanfattning : Wind has a profound influence on migrating birds since it inevitably will influence travel time and energy expenditure. In this thesis I investigate how migrating birds are affected by, and use winds. LÄS MER
2. Formation and fragmentation dynamics of superexcited molecules
Sammanfattning : A series of experimental studies on superexcited smallmolecules have been performed giving new information on theformation and fragmentation dynamics of small superexcitedmolecules. Highly monochromatized synchrotron radiation hasbeen applied in the 5-30 eV energy region, corresponding tovalence shell excitation, and in the 60-600 eV region,corresponding to core shell excitation, to reach these neutralstates above the ionization potential. LÄS MER
3. Applications of Ion Beam Methods in Silicide/Si and Silicide/GaAs Nanometre Structures
Sammanfattning : Ion beam methods are used to analyse material (Ion Beam Analysis, IBA) and to modify the target (Ion Beam Modification of Materials, IBMM). In this thesis, ion beams have been used in various IBA techniques to investigate the surface nanometre structures, and also in an ion beam synthesis (IBS) technique to form thin films and to modify material properties. LÄS MER
4. Co-combustion of Biomass and Waste Fuels in a Fluidised Bed Boiler - Fuel Synergism
Sammanfattning : The objective of this work was to study co-combustion of biomass and waste fuels in a circulating fluidised bed boiler and to detect synergy effects with respect to flue gas composition and ash formation during boiler operation. It was also the aim to perform supplementary thermodynamic equilibrium calculations in order to support the experimental results. LÄS MER
5. Methods for evaluation of early bone healing at titanium implants
Sammanfattning : Titanium has for a long time been the implant material of choice when in need for abilities as strength, biocompatibility and stability. Although numbers of studies have been made, little is known about the early events in implant healing. The primary aim in this thesis was to develop methods for evaluating bone healing around implants. LÄS MER