Sökning: "Maria Ekelund"

Hittade 5 avhandlingar innehållade orden Maria Ekelund.

1. 1. Long-term performance of poly(vinyl chloride) cables : mechanical and electrical performances and the effect of plasticizer migration

   Författare :Maria Ekelund; Ulf W. Gedde; Minna Hakkarainen; KTH; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Poly vinyl chloride cables; ageing; mechanical properties; plasticizer migration; Polymer chemistry; Polymerkemi;

   Sammanfattning : Cables insulated with plasticized poly(vinyl chloride) were aged at temperatures between 80 and 180 °C in air and their conditions were assessed by indenter modulus measurements, tensile testing, infrared (IR) spectroscopy, differential scanning calorimetry (DSC) and liquid chromatography (HPLC). Electrical testing of oven-aged cable samples was performed in order to relate the electrical functionality during a high-energy line break accident to the mechanical properties and to establish a lifetime criterion. LÄS MER

3. 2. Long-term Performance of PVC and CSPE Cables used in Nuclear Power Plants : the Effect of Degradation and Plasticizer migration

   Författare :Maria Ekelund; Ulf Gedde; Thomas Hjertberg; KTH; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; PCV; CSPE; cables; ageing; mechanical properties; plasticizer migratio; LIRA; life time prediction; Chemistry; Kemi;

   Sammanfattning : Enormous amounts of low voltage cables installed in a Swedish nuclear power plant are reaching their expected lifetimes. Since the cables are crucial to operational safety, it is of great importance that the actual condition of the installed cables is determined. LÄS MER

4. 3. Psoriasis and Temporomandibular Joint Involvement in Juvenile Idiopathic Arthritis (JIA) : A Longitudinal Study of the Nordic JIA Cohort

   Författare :Maria Ekelund; Lillemor Berntson; Boel Andersson Gäre; Anders Fasth; Anders Forslund; Andreas Thor; Josefin Lysell; Uppsala universitet; []
   Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; arthritis; juvenile idiopathic arthritis; juvenile psoriatic arthritis; temporomandibular arthritis; classification; Pediatrik; Pediatrics; Medicinsk vetenskap; Medical Science;

   Sammanfattning : Juvenile idiopathic arthritis, JIA, is used as an umbrella term covering a heterogeneous group of chronic arthritis forms in children, many of which have important differences compared to adult arthritis, while others possibly represent similar diseases among children and adults. Classification aims to give a better understanding of the pathogenesis, patterns, disease trajectories and treatment responses. LÄS MER

5. 4. Physiological adaptations in two ecotypes of Fucus vesiculosus and in Fucus radicans with focus on salinity

   Författare :A Maria Gylle; Nils GA Ekelund; Stefan Falk; Pauli Snoeijs; Mittuniversitetet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Bothnian Sea; brackish; brown algae; D1; 77 K fluorescence emission; Fucus vesiculosus; Fucus radicans; light-harvest antenna; mannitol; marine; NMR; Norwegian Sea; quantum yield; photosynthetic maximum capacity Pmax ; photosystem; PSI; PSII ; PsaA; Rubisco; salinity.; Biology; Biologi; Plant physiology; Växtfysiologi;

   Sammanfattning : The in origin intertidal marine brown alga Fucus vesiculosus L. grow permanently sublittoral in the brackish Bothnian Sea, side by side with the recently discovered F. radicans L. Bergström et L. LÄS MER

7. 5. Visual Poetic Memory : Ekphrasis and Image-Text in Seamus Heaney, Derek Walcott and Wopko Jensma

   Författare :Maria Ioana Zirra; Stefan Helgesson; Bo Ekelund; Stef Craps; Jahan Ramazani; Stockholms universitet; []
   Nyckelord :HUMANIORA; HUMANITIES; Visual Memory; Ekphrasis; Image-text; 20th Century Anglophone Poetry; Seamus Heaney; Derek Walcott; Wopko Jensma; The Troubles in Northern Ireland; the Caribbean; Apartheid; English; engelska;

   Sammanfattning : This dissertation traces ekphrastic and image-textual references to European, African and Caribbean visual memory in the work of the three Anglophone poets Seamus Heaney (Northern Ireland), Derek Walcott (St. Lucia) and Wopko Jensma (South Africa). LÄS MER