Search for dissertations about: "Nygren"

Showing result 16 - 20 of 131 swedish dissertations containing the word Nygren.

  2. 16. Response to wheat dwarf virus in wild and domesticated wheat : genetic resources of evolutionary and environmental origins

    Author : Jim Nygren; Sveriges lantbruksuniversitet; Sveriges lantbruksuniversitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES;

    Abstract : Wild and domesticated plants are constantly exposed to a variety of pathogens, which may trigger an arms race in evolution of defense strategies in the plant and development of virulence in the pathogen. The outcome of the interaction depends on the intensity of reciprocal selection between the interacting species, which may vary over space and time, explained as the geographic mosaic theory of coevolution. READ MORE

  4. 17. The sites and mechanisms of postoperative insulin resistance

    Author : Jonas Nygren; Karolinska Institutet; Karolinska Institutet; []
    Keywords : Surgery; Insulin resistance; Glucosemetabolism; Glucose clamping technique; Gastric emptying; Immobilization; Preoperative fasting; ICF-I; Hospital stay; Stableisotopes ISBN 9;

    Abstract : In Sweden with nine million inhabitants, 450,000 operations (outpatients excluded) are performed every year resulting in 2,250,000 treatment days in hospital. Surgical operations are part of the treatment for 44% of all patients admitted to hospital care occupying 24% of all hospital beds. READ MORE

  5. 18. Evolutionary Consequences of Reproductive Strategies : Testing Theory on Sex and Reproductive Gene Evolution in the Fungal Model Neurospora

    Author : Kristiina Nygren; Hanna Johannesson; Tatiana Giraud; Uppsala universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Biology; Biologi; Biology with specialization in Evolutionary Genetics; Biologi med inriktning mot evolutionär genetik;

    Abstract : In this thesis, I used the filamentous ascomycete genus Neurospora as a model to test theoretical predictions on the evolutionary consequences of different reproductive strategies and reproductive gene evolution. The genus Neurospora contains taxa representing a diversity of reproductive strategies, and here I constructed a phylogeny by which I was able to show that several independent transitions in reproductive mode have occurred in the evolutionary history of the genus. READ MORE

  6. 19. Magnetron Sputtering of Nanocomposite Carbide Coatings for Electrical Contacts

    Author : Kristian Nygren; Ulf Jansson; Peter Leisner; Uppsala universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; transition metal carbide; amorphous carbon; composite; contact resistance; corrosion; friction; optical properties;

    Abstract : Today’s electronic society relies on the functionality of electrical contacts. To achieve good contact properties, surface coatings are normally applied. Such coatings should ideally fulfill a combination of different properties, like high electrical conductivity, high corrosion resistance, high wear resistance and low cost. READ MORE

  7. 20. Mantle cell lymphoma : studies of predictive markers, the role of the microenvironment in disease development and identification of new potential targets for therapy

    Author : Lina Nygren; Karolinska Institutet; Karolinska Institutet; []
    Keywords : ;

    Abstract : Mantle cell lymphoma (MCL) is an aggressive B cell lymphoma and accounts for 5-10 % of all non-Hodgkin lymphomas (NHL). In Sweden, the incidence of NHL is 21.6 and 15.3 per 100 000 persons for men and women, respectively, which result in almost 100-200 new MCL cases per year. READ MORE