Sökning: "Alaska"

Visar resultat 11 - 13 av 13 avhandlingar innehållade ordet Alaska.

1. 11. Influenza A virus in natural and artificial environments

   Författare :John Wahlgren; Karolinska Institutet; Karolinska Institutet; []
   Nyckelord :;

   Sammanfattning : Influenza is caused by influenza A virus, a single stranded RNA virus of the orthomyxoviridae family. In humans, it causes yearly outbreaks with high morbidity and excess fatality rates as a direct effect. Placed in its ecological niche however, in dabbling ducks, avian influenza virus (AIV) induce quite mild disease. LÄS MER

3. 12. Use of thermosyphons in a subarctic climate

   Författare :Anna Forsström; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Soil Mechanics; Geoteknik;

   Sammanfattning : In frozen ground, climatic changes and thermal disturbance might cause thawing and degradation of ground previously frozen. Foundations built on frozen ground might be destroyed in a matter of a few seasons. These problems are mostly pronounced in permafrost regions, but also exist in regions with more moderate climates. LÄS MER

4. 13. Molecular epidemiology of hepatitis A and hepatitis B virus in central America

   Författare :Patricia Arauz-Ruiz; Karolinska Institutet; Karolinska Institutet; []
   Nyckelord :;

   Sammanfattning : The genetic variability was determined for hepatitis A virus (HAV) and hepatitis B virus (HBV) strains from cases of acute and chronic hepatitis in Central America (CA). The genetic relatedness was established for the' strains to strains from other parts of the world. LÄS MER