Sökning: "lifetime perspective"

Visar resultat 1 - 5 av 65 avhandlingar innehållade orden lifetime perspective.

1. 1. Lifetime modeling and management of transformers

   Författare :Johanna Rosenlind; Rajeev Thottappillill; Zhong Dong Wang; KTH; []
   Nyckelord :transformers; lifetime modeling; asset management; thermal modeling; lifetime estimation;

   Sammanfattning : This work have studied and developed lifetime estimation methods for the power transformer and how these could be used for asset management purposes. It is researchperformed in the intersection of the fields of reliability theory, statistical analysis, and stochastic process theory applied to lifetime estimations and management of transformers. LÄS MER

3. 2. Improved mapping of steel recycling from an industrial perspective

   Författare :Alicia Gauffin; Anders Tilliander; Ichiro Daigo; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Recycling rate; lifetime; steel scrap; scrap reserve; dynamic material flow modelling; environmental analysis; greenhouse gas emissions; energy; alloy content; forecasting; backcasting; Teknisk materialvetenskap; Materials Science and Engineering;

   Sammanfattning : The results from this study show that it is possible to obtain data series on the steel scrap collection based on mass balance model on the crude steel production figures by steelmaking reactor type and additional knowledge on process metallurgy as well as information on inputs and outputs into the reactors with an area correlation coefficient of 0,91 compared to data obtained from trade statistics. Furthermore, the study shows that based on a new method it is possible to calculate the time duration of mass flows on a continuous basis. LÄS MER

4. 3. Polycystic ovary syndrome in a lifetime perspective

   Författare :Maria Forslund; Göteborgs universitet; []
   Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; cardiovascular disease; FSH; hyperandrogenism; insulin resistance; menopause; netabolic syndrome; PCOS; postmenopausal; type 2 diabetes mellitus; quality of life;

   Sammanfattning : Background: Polycystic ovary syndrome (PCOS) is common, affecting 9-18% of women. PCOS is associated with symptoms due to hyperandrogenism and ovarian dysfunction, but is also associated with the metabolic syndrome including obesity, insulin resistance and elevated blood lipids. LÄS MER

5. 4. Lifetime Performance Assessment of Thermal Systems : Studies on Building, Solar and Disctrict Heating Applications

   Författare :Bojan Stojanovic; Christer Sjöström; Per Jostein Hovde; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Lifetime performance; degradation; assessment; modelling; field exposure; thermal components and system; Building engineering; Byggnadsteknik; Materials science; Teknisk materialvetenskap;

   Sammanfattning : The main questions today concerning thermal systems are their economical and environmental impacts. These entities are generally, at present, assessed on the basis of operation performances of newly installed/designed systems, during an assumed lifetime period. LÄS MER

7. 5. Toward an Understanding of Abuse in Health Care : A Female Patient Perspective

   Författare :A. Jelmer Brüggemann; Katarina Swahnberg; Barbro Wijma; Ingemar Åkerlind; Linköpings universitet; []
   Nyckelord :;

   Sammanfattning : Background. High numbers of incidents of abuse in health care (AHC) have been reported by patients in Sweden. In questionnaire studies (n=9600), every fifth Swedish woman and every tenth Swedish man reported any lifetime experience of AHC, and a majority reported suffering from their experiences. LÄS MER