Sökning: "VSI"
Visar resultat 1 - 5 av 17 uppsatser innehållade ordet VSI.
1. Optimization of concrete recipe made with crushed aggregate
Uppsats för yrkesexamina på grundnivå, Högskolan i Halmstad/Akademin för företagande, innovation och hållbarhetSammanfattning : This paper investigate however concrete recipes with a specific type ofcrushed aggregate can be optimized to reduce cement content for concreteand compares it to concrete made with natural fine aggregate. The different aggregate types are sieved, and the particle size distribution curve is made for each one. LÄS MER
2. Study of vector control strategy on Interior Permanent Magnet Synchronous Motors
Magister-uppsats, Högskolan Väst/Institutionen för ingenjörsvetenskapSammanfattning : This thesis presents a comprehensive study of Direct Torque Control (DTC) for Interior Permanent Magnet Synchronous Motors (IPMSMs) evaluating its potential in high performance motor drive systems. The research begins with a literature review, looking into the fundamental principles of DTC, Pulse Width Modulation (PWM), Space Vector Modulation (SVM) and Field Oriented Control (FOC). LÄS MER
3. Histamin – koppling till magtarmbesvär och ångest? En retrospektiv tvärsnittsstudie om histaminrika livsmedels relation till gastrointestinala och ångestrelaterade symtom vid IBS
Kandidat-uppsats, Göteborgs universitet/Institutionen för kost- och idrottsvetenskapSammanfattning : Magtarmsjukdomen Irritable Bowel Syndrome (IBS) är vanligt förekommande och kan påverka livskvalitén negativt. Sjukdomen innebär återkommande buksmärtor i kombination med förändrade tarmvanor, hos vissa även gastrointestinal (GI) specifik ångest. LÄS MER
4. Investigating Surface Oxide Composition and Formation on Metallic Vibenite® Alloys
Kandidat-uppsats, Uppsala universitet/Institutionen för materialvetenskapSammanfattning : Oxide formation on metallic surfaces is a common phenomenon which occursnaturally or intently. Depending on the metallic oxide, they can be viewed as either nuisances or conveniences depending on the effects of the oxide. LÄS MER
5. Characterization of surface defects caused by ultrasonic cleaning of aluminium
Uppsats för yrkesexamina på avancerad nivå, Uppsala universitet/Tillämpad materialvetenskapSammanfattning : This master thesis studies the behaviour of two aluminium alloys in ultrasonic cleaning at two different intensities, as well as the effect of a cleaning solution, Formula 815 GD-NF on the same surface have been studied with respect to surface roughness and material composition. Methods like Light Optical Microscopy (LOM), Scanning Electron Microscopy (SEM), Energy Dispersive Spectroscopy (EDS) and 3D topography using white light interferometry (VSI) was used to study the surface and material composition. LÄS MER