Sökning: "XRF"

Visar resultat 1 - 5 av 44 avhandlingar innehållade ordet XRF.

  1. 1. Laboratory x-ray fluorescence tomography

    Författare :Jakob C. Larsson; Hans Hertz; Anna Burvall; Ulrich Vogt; Norbert Pelc; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; x-ray; fluorescence; x-ray fluorescence; nanoparticle; xrf; xfct; tomography; Fysik; Physics;

    Sammanfattning : X-ray fluorescence (XRF) tomography is an emerging bio-imaging modality with potential for high-resolution molecular imaging in 3D. In this technique the fluorescence signal from targeted nanoparticles (NPs) is measured, providing information about the spatial distribution and concentration of the NPs inside the object. LÄS MER

  3. 2. Iodine status and iodine pool an a small community in western Sweden

    Författare :Mille Milakovic; Göteborgs universitet; []
    Nyckelord :goitre; thyroid volume; ultrasonography; urinary iodine; TpoAb; TSH; iodine supplementation; radioiodine uptake; scintigraphy; XRF;

    Sammanfattning : Iodine is essential in the synthesis of the vital hormones of the thyroid gland. On a worldwide basis, iodine deficiency is the global most important cause of thyroid disease. LÄS MER

  4. 3. Occurrence and environmental risk assessment of antifouling paint biocides from leisure boats

    Författare :Maria Lagerström; Ann-Kristin Eriksson Wiklund; Erik Ytreberg; Kent Salo; Andrew Turner; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Antifouling paint; XRF; leisure boat; recreational boating; copper; zinc; tributyltin; organotin compounds; risk assessment; biocide; metals; release rate; Applied Environmental Science; tillämpad miljövetenskap;

    Sammanfattning : The use of biocidal antifouling (AF) paints is the most common way to prevent fouling on leisure boat hulls. The main aim of this thesis was to investigate the pathways through which AF biocides, past and present, may reach the environment through their use on leisure boats and to improve the risk assessment of biocidal AF paints intended for amateur use. LÄS MER

  5. 4. Strain Mapping of Single Nanowires using Nano X-ray Diffraction

    Författare :Susanna Hammarberg; NanoLund: Centre for Nanoscience; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Nanotrådar; X-ray Diffraction; Strain mapping; XRF; III-V nanowire; perovskite nanowires; Diffraction; Nanowires; Strain mapping; XRD; XRF; MAX IV;

    Sammanfattning : Nanowires are explored as basic components for a large range of electronic devices. The nanowire format offersseveral benefits, including reduced material consumption and increased potential for combining materials to formnew novel heterostructures. LÄS MER

  7. 5. Use and environmental impact of antifouling paints in the Baltic Sea

    Författare :Maria Alexandra Bighiu; Ann-Kristin Eriksson-Wiklund; Bethanie Carney Almroth; Manu Soto; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; boats; antifouling paints; metals; XRF; in situ; caging; Theodoxus fluviatilis; toxicity; Applied Environmental Science; tillämpad miljövetenskap;

    Sammanfattning : Biocide-based antifouling (AF) paints are the most common method for preventing biofouling, i.e. the growth of algae, barnacles and other organisms on boat hulls. AF paints for leisure boats are predominantly based on copper (Cu) as the main biocide, with zinc (Zn) present as a pigment and stabilizer. LÄS MER