Search for dissertations about: "DLS"

Showing result 16 - 20 of 34 swedish dissertations containing the word DLS.

  1. 16. To “leaf” or not to “leaf” Understanding the metabolic adjustments associated with leaf senescence

    University dissertation from Umeå : Umeå universitet

    Author : Daria Chrobok; Umeå universitet.; Umeå universitet.; [2018]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Arabidopsis thaliana; metabolism; mitochondria; senescence; biology; biologi;

    Abstract : The adequate execution of the final developmental stage of a leaf, leaf senescence, is crucial to the long-term survival of the plant. During senescence cellular structures like membranes, proteins, lipids and macromolecules are degraded and released nutrients are relocated to developing parts of the plant, such as young leaves, stems, flowers, siliques and ultimately seeds that are dependent on this nutrient remobilization. READ MORE

  2. 17. Ethanol-induced modulation of dopamine transmission and synaptic activity in striatal subregions - focus on inhibitory receptors

    University dissertation from Umeå : Umeå universitet

    Author : Rhona B. C. Clarke; Göteborgs universitet.; Gothenburg University.; [2015]
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; dopamine; ethanol; acetaldehyde; striatum; glycine receptor; GABA A receptor;

    Abstract : Background: Alcoholism is a chronic brain disease, affecting neurocircuitries involved in reward and learning. The rewarding effects of alcohol (ethanol) are believed to result from increased dopamine levels in the nucleus accumbens (nAc) via the mesolimbic system. READ MORE

  3. 18. Surface force studies of association phenomena at solid-liquid interfaces

    University dissertation from Stockholm : Kemi

    Author : Andra Dedinaite; KTH.; [1999]
    Keywords : ;

    Abstract : The main topics of this thesis, association phenomena inbulk and at solid-liquid interfaces in polar and non-polarmedia, were studied by a range of methods. Direct forcemeasurements employing the interferometric surface forceapparatus (SFA) was the chief technique. READ MORE

  4. 19. Association Phenomena in Aqueous Solutions of Surfactants and Hydrophobically Modified Polymers

    University dissertation from Physical Chemistry 1, Lund University

    Author : Susanne Nilsson; Lund University.; Lunds universitet.; [1999]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; self-diffusion; rheology; cellulose ethers; associating polymers; polymer-surfactant interactions; polymer network; Fysikalisk kemi; Physical chemistry;

    Abstract : Interactions between ionic surfactants (sodium dodecyl sulfate and dodecyltrimethylammonium chloride) and nonionic polymers ((hydroxyethyl)cellulose, ethyl(hydroxyethyl)cellulose and their hydrophobically modified analogous) have been studied by means of rheology, pulsed field gradient nuclear magnetic resonance (PFG NMR), time-resolved fluorescence quenching (TRFQ), dynamic light scattering (DLS) and cryo-transmission electron microscopy (cryo-TEM). In all experiments surfactants have been added in various amounts to polymer solutions at fixed concentrations. READ MORE

  5. 20. Formation of Block Copolymer and Surfactant Vesicles

    University dissertation from Karin Bryskhe, Villav. 8, 232 53 Åkarp

    Author : Karin Bryskhe; Lund University.; Lunds universitet.; [2004]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Polymerteknik; Fysikalisk kemi; biopolymers; Polymer technology; nanoparticles; Lipid; triblock copolymer; surfactants; Nonionic; Vesicles; Formation; Physical chemistry;

    Abstract : In this thesis temperature induced vesicle formation in both a block copolymer system and nonionic surfactant system have been investigated. The block copolymer is a triblock copolymer of poly(ethylene oxide) (PEO) and poly(propylene oxide) (PPO), PEO-PPO-PEO, with the average molecular composition of EO5PO68EO5 and the commercial trade name Pluronic L121 (papers I, II). READ MORE