Sökning: "blomma"

Visar resultat 6 - 10 av 13 avhandlingar innehållade ordet blomma.

1. 6. Effects of landscape context on populations of bumblebees

   Författare :Anna Persson; Biologiska institutionen; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Apoidea; Bombus; Campanula; agriculture; land-use intensity; complexity; garden; grassland; field border; MFC; pollination; Factor Analysis;

   Sammanfattning : To investigate recent declines in bumblebee populations, I carried out landscape analyses, made field studies of bumblebees, flowering plants and pollination in an agricultural region in southernmost Sweden. Studies were carried out in landscapes of contrasting agricultural intensity and land-cover configuration; "simple" landscapes highly dominated by large crop fields, and "complex" with mixed farming, grasslands and smaller fields. LÄS MER

3. 7. "Jag är baserad på verkliga personer" : Ironi och röstgivande i Kristina Lugns författarskap

   Författare :Ann-Helén Andersson; Annelie Bränström Öhman; Björn Sundberg; Umeå universitet; []
   Nyckelord :HUMANIORA; HUMANITIES; Kristina Lugn; irony; role playing; talking back; gender; the position of the child; the mass media writer; media images; Swedish poetry; post-modernism; fiction and reality; Literature; Litteraturvetenskap; Literature; litteraturvetenskap;

   Sammanfattning : ”I am based on real people,” Kristina Lugn writes in the foreword to her play Nattorienterarna (1999). This quotation summarises the ever-changing concept of the ego which finds expression in Lugn’s writing and which is the focus of this study. LÄS MER

4. 8. Plant Calreticulins - isoforms, localization and function

   Författare :Karin Svensson; Biologiska institutionen; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; arabidopsis thaliana; calcium; isoform; endoplasmic reticulum; chaperone; tunicamycin;

   Sammanfattning : Calreticulin (CRT) is an endoplasmic reticulum (ER)-located protein involved in quality control of newly synthesized proteins as well as in calcium homeostasis of the cell. Most of what is known about CRT arises from studies of mammalian systems. LÄS MER

5. 9. Evolution of Plants : a mathematical perspective

   Författare :Magnus Lindh; Åke Brännström; Jacob Johansson; Mats G Larson; Lennart Persson; Claus Rüffler; Umeå universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Evolution; plants; mathematics; optimization; optimal control; adaptive dynamics; flowering; seasons; tree crown; drought; taproot; trade-off; strategy; trait; ESS; NPP; LAI; Red Queen; Mathematics; matematik;

   Sammanfattning : The Earth harbors around 300 000 plant species. The rich and complex environment provided by plants is considered a key factor for the extraordinary diversity of the terrestrial fauna by, for example, providing food and shelter. LÄS MER

7. 10. Power and Wake Dynamics of Hawkmoth Flight

   Författare :Kajsa Warfvinge; Evolutionär ekologi; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Insect flight; Aerodynamics; Wind tunnel; Particle Image Velocimetry PIV .; tomo-PIV; Power; Manduca sexta; Macroglossum stellatarum; Hawkmoth;

   Sammanfattning : Aerodynamic theory states that the power required to fly is related to flight speed with a ∪-shaped curve. This has been shown in vertebrates, but insects have been proposed to have a flat, or J-shaped power curve. LÄS MER