Search for dissertations about: "Desorption dynamics"

Showing result 16 - 20 of 39 swedish dissertations containing the words Desorption dynamics.

  2. 16. Crystalline cellulose in bulk and at interfaces as studied by atomistic computer simulations

    Author : Malin Bergenstråhle; Lars Berglund; Stephen Eichhorn; KTH; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Cellulose; molecular dynamics simulation; interfaces; Chemistry; Kemi;

    Abstract : Cellulose is a linear polysaccharide, serving as reinforcement in plant cell walls.Understanding its structure and properties is of importance in the developmentof nanostructured cellulose materials. READ MORE

  4. 17. Long-term phosphorus supply in agricultural soils : size and dynamics of fast- and slow-desorbing phosphorus pools

    Author : Sabina Braun; Sveriges lantbruksuniversitet; Sveriges lantbruksuniversitet; []
    Keywords : LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES;

    Abstract : To improve phosphorus (P) fertiliser management, a better understanding of inorganic P exchange between the soil solution and solid phase is needed. This thesis examined the dynamics of this exchange, distinguishing between pools of P that are fast- and slowdesorbing, and compared methods for quantification of these pools. READ MORE

  5. 18. Computational Studies of Hydrogen Storage Materials : Physisorbed and Chemisorbed  Systems

    Author : Pornjuk Srepusharawoot; Rajeev Ahuja; Puru Jena; Uppsala universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Density functional theory; Ab initio molecular dynamics; Ab initio random structure searching; Hydrogen storage materials; Alkaline earth dicarbide; Condensed matter physics; Kondenserade materiens fysik; Physics with spec. in Atomic; Molecular and Condensed Matter Physics; Fysik med inriktning mot atom- molekyl- och kondenserande materiens fysik;

    Abstract : This thesis deals with first-principles calculations based on density functional theory to investigate hydrogen storage related properties in various high-surface area materials and the ground state crystal structures in alkaline earth dicarbide systems. High-surface area materials have been shown to be very promising for hydrogen storage applications owing to them containing numerous hydrogen adsorption sites and good kinetics for adsorption/desorption. READ MORE

  6. 19. Catalysts for Car Exhaust: Oxygen Storage in Platinum/Ceria and Mass Transfer in Monoliths

    Author : Anna Holmgren; Chalmers tekniska högskola; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; car exhaust; catalysis; flow distribution; mass transfer; oxygen storage capacity OSC ; ceria; computational fluid-dynamics simulations; monolith catalyst; platinum; oxygen transport;

    Abstract : In this work, the oxygen storage/release in Pt/ceria catalysts has been investigated both experimentally and theoretically. Moreover, the flow distribution and mass transfer in monolith catalysts for car-exhaust purification have been studied. READ MORE

  7. 20. Multimodal Chemical Imaging of Amyloid Plaque Pathology in Alzheimer’s Disease

    Author : Wojciech Michno; Göteborgs universitet; []
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Alzheimer’s disease; beta-amyloid; electron microscopy; imaging mass spectrometry; lipids; luminescent conjugated oligothiophenes; matrix-assisted laser desorption ionization mass spectrometry MALDI-MS ; molecular imaging; nanoscale secondary ion mass spectrometry NanoSIMS ; neurodegeneration; peptides;

    Abstract : Alzheimer’s disease (AD) is the most common form of dementia. AD has been linked to the aggregation of amyloid beta (Aβ) peptides into extracellular deposits, Aβ plaques. These are also found in cognitively unimpaired amyloid-positive (CU-AP) individuals, but these Aβ plaques are primarily diffuse in structure. READ MORE