Sökning: "gamma spectrometry"

Visar resultat 21 - 25 av 31 avhandlingar innehållade orden gamma spectrometry.

  1. 21. Primordial radionuclides in pit lakes in Sweden

    Författare :Rimon Thomas; Göteborgs universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; non-uranium mines; water; sediment; radiochemistry; principle component analysis;

    Sammanfattning : In Sweden, there are many pit lakes, originating from limestone quarries and metal mines, with unknown status in regard to the activity concentration of radionuclides. Such knowledge is generally available only for pit lakes from uranium mining activi-ties. LÄS MER

  3. 22. On the solubility of radium sulfate and carbonate

    Författare :Artem Matyskin; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; dissolution; thermodynamics; radium sulfate; radium carbonate; solubility product; precipitation;

    Sammanfattning : Radium is one of the most toxic elements and its concentration in different human activities and migration from man-made wastes provokes a strong interest in environmental science. To be able to model the migration process, reliable experimental thermodynamic data of radium compounds are needed. LÄS MER

  4. 23. Studies of stem cell and adhesion proteins in breast cancer

    Författare :Salah-Eldin Gadalla; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :;

    Sammanfattning : Breast cancer is the commonest cancer and second leading cause of cancer death in women. It has been shown that breast cancer tumorigenic/stem cell like cells are CD24-/low CD44+EpCAM+. These cells constitute less than 5% of the cells within a cancer and are probably responsible for recurrence and metastasis. LÄS MER

  5. 24. Purification, structure and function of bioactive peptides

    Författare :Elo Eriste; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :;

    Sammanfattning : Peptides are vitally important molecules and many evoke cellular responses. The completion of several genome sequencing projects has revealed a number of new genes. LÄS MER

  7. 25. Determination of Sr90 and the Transuranium Elements in the Event of a Nuclear Accident

    Författare :Ingvar Friberg; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; transuranium TRU elements; nuclear accident; Sr90; solvent extraction; radioanalysis; HDEHP; Cherenkov; DMDBTDMA;

    Sammanfattning : To reduce the health effects of a nuclear accident, it is essential that suitable analytical methods are available for determinations of radionuclides released to the environment. Sr90 and the transuranium (TRU) elements are of great radiological importance, and they are more difficult to measure than many other radionuclides. LÄS MER