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Visar resultat 1 - 5 av 6 avhandlingar som matchar ovanstående sökkriterier.

1. 1. Proteins from human erythrocyte membranes - solubilization and fractionation

   Författare :Per Lundahl; Uppsala universitet; []
   Nyckelord :NATURAL SCIENCES; NATURVETENSKAP;

   Sammanfattning : .... LÄS MER

3. 2. Affinity-, Partition- and Permeability Properties of the Human Red Blood Cell Membrane and Biomembrane Models, with Emphasis on the GLUT1 Glucose Transporter

   Författare :Christine Lagerquist Hägglund; Per Lundahl; Jørgen Vinten; Uppsala universitet; []
   Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Biochemistry; Affinity; Aromatic amino acids; Binding; Biomembrane; Biotin; Chromatography; Cytochalasin B; Dihydrocytochalasin B; Dissociation constant; Drug absorption; Ethanol; Equilibrium; Glucose; GLUT1; Immobilization; Immobilized biomembrane affinity chromatography; Immobilized liposome chromatography; Interaction; Liposome; Membrane protein; Membrane vesicle; Partitioning; Phospholipid bilayer; Proteoliposome; Quantitative; Red blood cell; Specific; Streptavidin; Tyrosine; Tryptophan; Biokemi; Biochemistry; Biokemi;

   Sammanfattning : The human glucose transporter GLUT1 is abundant in red blood cells, the blood-brain barrier and epithelial cells, where it mediates the transport of the energy metabolite, glucose. In the present work some properties of GLUT1, including affinity binding of both substrates and inhibitors, transport rates as well as permeabilities of aromatic amino acids and drug-membrane interactions were analyzed by chromatographic methods. LÄS MER

4. 3. Partitioning of Drugs and Lignin Precursor Models into Artificial Membranes

   Författare :Elisabet Boija; Gunnar Johansson; Per Lundahl; Christine Lagerquist Hägglund; Marja-Liisa Riekkola; Uppsala universitet; []
   Nyckelord :Biochemistry; Bilayer disk; Capillary electrophoresis; Detergent; Drug; Electrostatic interaction; Hydrophobic interaction; Immobilized liposome chromatography; Lignin; Lignin precursor model; Liposome; Membrane model; Octanol water partitioning; Partitioning; Phospholipid; Phospholipid bilayer; Sterol; Biokemi;

   Sammanfattning : The main aim of this thesis was to characterize membrane-solute interactions using artificial membranes in immobilized liposome chromatography or capillary electrophoresis. The partitioning of a solute into a cell membrane is an essential step in diffusion across the membrane. LÄS MER

5. 4. ”Man är ju typ elev, fast på avstånd” : problematisk skolfrånvaro ur elevers, föräldrars och skolpersonals perspektiv

   Författare :Tobias Forsell; Lisbeth Lundahl; Per-Åke Rosvall; Alerby Eva; Umeå universitet; []
   Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Problematic school absenteeism; truancy; school refusal; drop-out; Bronfenbrenner; school attendance; school reintegration; pedagogiskt arbete; educational work;

   Sammanfattning : Aim: The aim of the thesis is to increase the knowledge of problematic school absenteeism by focusing on factors and processes contributing to this phenomenon in compulsory school, but also to identify what helps turningabsenteeism into increased school attendance. The thesis uses Kearney’s (2008a) definition of problematic school absenteeism: absences that adversely affect the student’s social and cognitive development, and mental wellbeing. LÄS MER

7. 5. Gymnasielärare - perspektiv på lärares arbete och yrkesutveckling vid millennieskiftet

   Författare :Ulf Lundström; Lisbeth Lundahl; Per-Olof Erixon; Sverker Lindblad; Umeå universitet; []
   Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; teaching profession; upper secondary teachers; change; school reform; professional development; school development; frame factors; school governance; school policy; trade union; Pedgogical work; Pedagogiskt arbete;

   Sammanfattning : The aim of this thesis is to contribute to knowledge about how the work and profession of upper secondary school teachers is understood and shaped by the teachers in the beginning of the 21st century, and to relate that understanding of work and professional development to the strivings of the teachers’ trade unions and the state. With the implementation of an innovation as a starting point, the teachers’ narratives also described their work in a broader sense. LÄS MER