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Visar resultat 11 - 15 av 200 avhandlingar som matchar ovanstående sökkriterier.
11. Long-Term Thermal Performance of Polyurethane-Insulated District Heating Pipes
Sammanfattning : The distribution of hot water in district heating pipes gives rise to energy losses. In order to minimise heat losses and maintain a high water temperature most district heating pipes produced today are insulated with rigid polyurethane foam. LÄS MER
12. Long-term performance of polymeric materials in nuclear power plants
Sammanfattning : Access to energy is crucial for modern societies to function sustainably. In addition, nuclear power has for a long time been considered a reliable source of energy. However, the majority of nuclear power plants are reaching the end of their service lifetimes, and it is crucial to verify that every component can withstand the added service time. LÄS MER
13. From novice towards self-care expert : studies of self-care among persons using advanced medical technology at home
Sammanfattning : The use of advanced medical technology at home has increased in most industrialized countries. The overall aim of this thesis was to develop knowledge of self-care and transition and issues that influence daily life and health among persons using advanced medical technology at home. LÄS MER
14. Nocturnal enuresis and rapid maxillary expansion : – long-term effect, prognostic variables, respiration during sleep and quality of life
Sammanfattning : Background:The orthodontic technique rapid maxillary expansion (RME) has been reported to have a potentially curative effect on nocturnal enuresis (NE). The mechanism behind this is unknown but could possibly be due to placebo and/or effects on respiration during sleep. LÄS MER
15. Internal oxygen transport to below-ground parts: importance for emergent macrophytes
Sammanfattning : This thesis examines factors regulating growth and distribution of emergent plants with focus on effects of oxygen supply to the roots. Greenhouse experiments revealed that P. australis acclimatizes to specific water depths with phenotypic plasticity. LÄS MER