Sökning: "rotation"
Visar resultat 21 - 25 av 603 avhandlingar innehållade ordet rotation.
21. A journey towards complete structure determination of zeolites by electron crystallography methods
Sammanfattning : Electron crystallography has recently become very successful for structural studies of materials with sub-micrometer sized crystals. In this thesis two major techniques have been applied for structure elucidation – 3-dimensional electron diffraction (3D ED) and high-resolution transmission electron microscopy (HRTEM) imaging. LÄS MER
22. Effects of rotation and stratification on magnetic flux concentrations
Sammanfattning : The formation of magnetic flux concentrations in the Sun is still a matter of debate. One observable manifestations of such concentrations is sunspots. LÄS MER
23. Design of Electro-Hydraulic Energy Converters : With Focus on Integrated Designs and Valve Plate Rotation
Sammanfattning : In mobile working machines, there is a trend towards replacing combustion engines by electric machines to reduce their carbon footprint. This provides several advantages and challenges for the hydraulic system. The low efficiency of conventional hydraulic systems is no longer acceptable due to the volume and cost of batteries. LÄS MER
24. ROBUST ROTATION AND TRANSLATION ESTIMATION IN STRUCTURE FROM MOTION
Sammanfattning : Due to advances in technology the amount of images from portable cameras has increased tremendously in recent years. Nowadays, most new mobile phones and cars have multiple cameras. Drones and other robots are often equipped with cameras as well. To be able to capture an image is not the same as to understand the content of it. LÄS MER
25. Stability and transition on wind turbine blades
Sammanfattning : Transition on wind turbine blades is a highly complex phenomenon due to the myriad effects influencing the process. This thesis studies some of them, namely free-stream turbulence (FST), rotation, and three-dimensionality. The investigations employ large eddy simulations (LES) with and without (implicit or wall-resolved LES) a subgrid-scale model. LÄS MER