Sökning: "Bengt Johansson"
Visar resultat 1 - 5 av 46 avhandlingar innehållade orden Bengt Johansson.
Sammanfattning : To obtain high performance control of a dc-dc converter, a good model of the converter is needed. The load usually affects the dynamics and one way to take this into consideration is to regard the load as a part of the converter. The load is often the most variable part of this system. LÄS MER
Sammanfattning : To obtain high performance control of a dc-dc converter, a good model of the converter is needed. It is suitable to consider the load to be included in the converter model since it usually affects the dynamics. The load is often the most variable part of this system. LÄS MER
Sammanfattning : Energy use accounts for the dominating fraction of total sulphur dioxide (SO2), nitrogen oxide (NOx), volatile organic compounds (VOCs) and carbon dioxide (CO2) emissions. In this thesis, different strategies for reducing these emissions are evaluated, using a bottom-up approach. The thesis is divided in two parts. LÄS MER
4. Transport, Energy and Environment: Vehicle Technologies and Biomassbased Energy Carries for Reducing Energy Use and Emissions of Air Pollutants
Sammanfattning : [abstract missing].... LÄS MER
5. Long-term outcome research on PDR brachytherapy with focus on breast, base of tongue and lip cancer
Sammanfattning : Brachytherapy (BT) with continuous low dose rate (LDR) has been used for 100 years and is considered as the radiotherapy method able to deliver a dose in the shortest time with high efficacy and low risk of side effects. The drawbacks are need for patient isolation and radiation exposure of the staff during the treatment. LÄS MER