Sökning: "Lena Tibell"

Visar resultat 1 - 5 av 20 avhandlingar innehållade orden Lena Tibell.

  1. 1. Studies of native and Cd(II)-substituted carbonic anhydrases with special reference to their interaction with inhibitors

    Författare :Lena Tibell; Umeå universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Carbonic anhydrase; Cd II ; 113-Cd II -NMR; inhibition; catalytic mechanism;

    Sammanfattning : The major aim of this work has been to gain further insights into the catalytic mechanism of carbonic anhydrase (carbonate hydro-lyase, EC 4.2.1.1). LÄS MER

  3. 2. Protein Engineering of Extracellular Superoxide Dismutase : Characterization of Binding to Heparin and Cellular Surfaces

    Författare :Ing-Marie Ahl; Lena Tibell; Bengt-Harald Jonsson; Steen Vang Petersen; Linköpings universitet; []
    Nyckelord :NATURAL SCIENCES; NATURVETENSKAP;

    Sammanfattning : Accumulating evidence indicates that oxygen free radicals are involved in many diseases and pathological conditions, such as aging, inflammation, reperfusion damage of ischemic tissue and various cardiovascular diseases. Extracellular superoxide dismutase (ECSOD) thus plays a major role in the maintenance of cells by providing protection against these toxic substances in the extracellular space. LÄS MER

  4. 3. Barns teckningar som utgångspunkt i det naturvetenskapliga samtalet

    Författare :Johanna Andersson; Lena Tibell; Jesper Haglund; Christina Ottander; Linköpings universitet; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; children; drawings; conceptions; heat; mixning; human body; living min-living; barn; teckningar; föreställningar; värme; blandning; människokroppen; levande inte levande;

    Sammanfattning : Barns föreställningar utgör en viktig del i deras begreppsbildning inom naturvetenskap vilket betonas inom konstruktivismen. I denna avhandling utgör en socialkonstruktivistisk syn på lärande det teoretiska ramverket. LÄS MER

  5. 4. Development of competence in biochemical experimental work : Assessment of complex learning at university level

    Författare :Christina Bergendahl; Lena Tibell; Lisbeth Lundahl; Lars-Owe Dahlgren; Umeå universitet; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Teaching; experimental work; laboratory based project work; open experiments; biochemistry; life science; university level; action research; course design; aims and objectives; assessment; formative assessment; competence; complex learning; Didaktik; Subject didactics; Ämnesdidaktik; biokemi; Biochemistry;

    Sammanfattning : Biochemistry is part of life science: a fast developing multidisciplinary area. The overall aims of this thesis and the work underlying it were to find ways in which to develop competence in biochemistry at university level and to assess complex learning. A particular interest was the development of experimental work as a means to promote learning. LÄS MER

  7. 5. Touching the Essence of Life : Haptic Virtual Proteins for Learning

    Författare :Petter Bivall; Anders Ynnerman; Lena A. E. Tibell; Matthew D. Cooper; Miriam Reiner; Linköpings universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Haptics; Educational Research; Biomolecular Education; Life Science; JND; Just Noticeable Difference; Protein-ligand Docking; Haptic docking; Visualization; Haptic Transfer Functions; Volume Data Haptics; History Dependent Transfer Function; Log file analysis; Molecular Recognition; Force Feedback; Virtual Reality; Other information technology; Övrig informationsteknik;

    Sammanfattning : This dissertation presents research in the development and use of a multi-modal visual and haptic virtual model in higher education. The model, named Chemical Force Feedback (CFF), represents molecular recognition through the example of protein-ligand docking, and enables students to simultaneously see and feel representations of the protein and ligand molecules and their force interactions. LÄS MER