Sökning: "Bengt Hellström"

Visar resultat 1 - 5 av 6 avhandlingar innehållade orden Bengt Hellström.

  1. 1. Calculation and Measurement Methods for the Performance of Solar Collectors. Models of Flat Plate Collectors, Transparent Insulation and Efficiency Factors

    Författare :Bengt Hellström; Avdelningen för Energi och byggnadsdesign; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Transparent insulation; Test method; Calculation method; Concentrating collector; Efficiency factor; Fin efficiency; Flat plate collector; Heat conductivity; Honeycomb; Measurement method; Performance; Solar transmittance; Solar collector; Collector model; Energy research; Energiforskning;

    Sammanfattning : This thesis deals with models of flat plate collectors, transparent insulation and efficiency factors. An equation for the energy output from a glazed flat plate collector is derived by modelling the collector efficiency factor, F´ as the sum of a constant and a temperature dependent part. LÄS MER

  3. 2. Förpackningens förvandlingar : Konsumtion och karneval i barnboken

    Författare :Martin Hellström; Bengt Erik Eriksson; Lars-Håkan Svensson; Boel Westin; Maria Nikolajeva; Linköpings universitet; []
    Nyckelord :HUMANIORA; HUMANITIES; Children s literature; consumption; package; carnival; Zygmunt Bauman; Mikhail Bakhtin; Roald Dahl; Herge; Tove Jansson; Astrid Lindgren; Barbro Lindgren; Christine Nöstlinger; Maurice Sendak; Barnlitteratur; konsumtion; förpackning; karneval; Zygmunt Bauman; Michail Bachtin; Roald Dahl; Herge; Tove Jansson; Astrid Lindgren; Barbro Lindgren; Christine Nöstlinger; Maurice Sendak; SOCIAL SCIENCES; SAMHÄLLSVETENSKAP; Comparative literature;

    Sammanfattning : Här studeras den massproducerade förpackningen som motiv inom ett flertal barnböcker, såsom Pippi Långstrump och Mio min Mio av Astrid Lindgren, Charlie and the Chocolate factory av Roald Dahl, In the Night Kitchen av Maurice Sendak, Korken flyger av Barbro Lindgren, samt ett flertal verk av Tove Jansson och Herge. I dessa verk ses förpackningen som den främsta symbolen för vårt konsumtionssamhälle. LÄS MER

  4. 3. Hyaluronan and the receptor CD 44 in the heart and vessels : a study in normal and pathological conditions

    Författare :Martin Hellström; Anna Engström-Laurent; Bengt Johansson; Lena Jonasson; Umeå universitet; []
    Nyckelord :hyaluronan; CD44; heart; Rat; cardiac hypertrophy; artery; vein; human; Medicine; medicin;

    Sammanfattning : Tissues are not solely composed of cells. The extracellular matrix is important for the cell well-being and cell-cell communication. The glycosaminoglycan hyaluronan (HYA) is a widely distributed extracellular matrix (ECM) component. LÄS MER

  5. 4. Colon Cancer, Prognosis After Surgery : What Are the Risks of Recurrent Disease, and How Do We Find Those at Risk?

    Författare :Erik Osterman; Tobias Sjöblom; Bengt Glimelius; Lars Karlsson; Mats Hellström; Ismail Gögenur; Uppsala universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; colon cancer; recurrence risk; prediction model; biomarkers; Oncology; Onkologi; Surgery; Kirurgi;

    Sammanfattning : Colon cancer is the fourth most common cancer worldwide with approximately 1.2 million yearly cases. Developments in the standard of care have improved prognosis. In Paper I the recurrence risk was investigated in a national material consisting of 14,325 colon cancer patients. LÄS MER

  7. 5. Experimental acute otitis media : aspects on treatment, protection and structural changes

    Författare :Eva Westman; Ann Hermansson; Sten Hellström; Åsa Melhus; Bengt Carlsöö; Umeå universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Otorhinolaryngology; acute otitis media; penicillins; rat; treatment; protection; beta-lactamase; Moraxella catarrhalis; Haemophilus influenzae; Otorhinolaryngologi; Otorhinolaryngology; Otorhinolaryngologi; Oto-Rhino-Laryngology; oto-rhino-laryngologi;

    Sammanfattning : Acute otitis media (AOM) is a common disease in childhood and is one of the most common causes for outpatient antibiotic treatment. The major aetiological agents of AOM have varied over the decades. Now the three most common pathogens are Streptococcus pneumoniae, Haemophilus influenzae and Moraxella catarrhalis. LÄS MER