Sökning: "B Hall"

Visar resultat 1 - 5 av 19 avhandlingar innehållade orden B Hall.

  1. 1. The chloroplast lumen : New insights into thiol redox regulation and functions of lumenal proteins

    Författare :Michael Hall; Wolfgang Schröder; Bob B. Buchanan; Umeå universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Photosynthesis; thylakoid lumen; thioredoxin; pentapeptide repeat; proteomics; Biochemistry; biokemi;

    Sammanfattning : In higher plants oxygenic photosynthesis primarily takes place in the chloroplasts of leaves. Within the chloroplasts is an intricate membrane system, the thylakoid membrane, which is the site of light harvesting and photosynthetic electron transport. LÄS MER

  3. 2. Effects of increased UV-B radiation on the lichen Cladonia arbuscula spp. mitis: UV-absorbing pigments and DNA damage

    Författare :Roberta Buffoni Hall; Biologiska institutionen; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Systematic botany; taxonomy; morphology; phytogeography; chemotaxonomy. Physiology of nonvascular plants; kemotaxonomi. Växters fysiologi inte kärlväxter .; Systematisk botanik; taxonomi; morfologi;

    Sammanfattning : Lichens, a form of symbiosis between a fungal and a photosynthetic partner, are believed to be a group that evolved early in the history of terrestrial life. As a consequence, they probably experienced higher ultraviolet (UV) radiation fluxes than at present. LÄS MER

  4. 3. Opening New Radio Windows and Bending Twisted Beams

    Författare :Erik Nordblad; Thomas B. Leyser; Kristof Stasiewicz; Vladimir Pavlenko; Paul A. Bernhardt; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Orbital angular momentum; Hall effect; Nonparaxial beam; Geometrical optics; High frequency radio waves; Ray tracing; Magnetic zenith effect; Ionospheric irregularities; Wave propagation; Fysik med inriktning mot rymd- och plasmafysik; Physics with specialization in Space and Plasma Physics;

    Sammanfattning : In ground based high frequency (HF) radio pumping experiments, absorption of ordinary (O) mode pump waves energises the ionospheric plasma, producing optical emissions and other effects. Pump-induced or natural kilometre-scale field-aligned density depletions are believed to play a role in self-focussing phenomena such as the magnetic zenith (MZ) effect, i. LÄS MER

  5. 4. T cell responses and NK cell function in experimental autoimmune diabetes

    Författare :Håkan Hall; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :;

    Sammanfattning : The immune system is regulated by several complex mechanisms to maintain self tolerance and prevent autoimmune diseases. However, genetic as well as environmental factors can increase the risk of breaking self tolerance. Autoimmune diabetes is a polygenic disorder characterized by the selective destruction of pancreatic beta cells. LÄS MER

  7. 5. Characterization of Si-based heterostructures prepared by MBE and containing Ge, C, or Er

    Författare :Kenneth B. Joelsson; Karl Eberl; Linköpings universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : Silicon molecular beam epitaxy (MBE) has been used to prepare various Si-based structures.The first part of the work concerns hole transport in Si1-xGex layers for Ge contents 0≤x≤0.36 and B-doping concentrations 2-7.5x1018 cm-3. LÄS MER