Sökning: "half-lives"

Visar resultat 11 - 15 av 49 avhandlingar innehållade ordet half-lives.

  1. 11. Applications of On-Line Continuous Solvent Extraction in Nuclear Chemistry

    Författare :Rikard Malmbeck; Chalmers University of Technology; []
    Nyckelord :reactor water; Seaborgium; BWR; mixer-settlers; Dubnium; Bohrium; transactinides; centrifuges; speciation; SISAK; solvent extraction; Iodine; Rutherfordium;

    Sammanfattning : Methods and procedures for on-line continuous chemical separation of iodine species in reactor water and for transactinides in heavy element chemistry have been developed. Radioiodine is one of the more important fission products in terms of nuclear reactor safety due to its high fission yield, significant radiobiological hazard and potential volatility. LÄS MER

  2. 12. Synthesis of 18F- and 76Br-labelled oligonucleotide and nucleoside derivatives

    Författare :Elisabeth Hedberg; Uppsala universitet; []
    Nyckelord :NATURAL SCIENCES; NATURVETENSKAP; Chemistry; Kemi; Chemistry; Kemi; organisk kemi; Organic Chemistry;

    Sammanfattning : With the aim of developing synthetic routes to oligodeoxynucleotides and analogues labelled with the positron-emitting radionuclides 18F and 76Br (half-lives 1.8 and 16. LÄS MER

  3. 13. Pharmacokinetic aspects of the blood-brain barrier transport and equilibration of opioids studied with microdialysis in rats and mice

    Författare :Rujia Xie; Uppsala universitet; []
    Nyckelord :MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Pharmacy; FARMACI; PHARMACY; FARMACI; Biopharmaceutics; biofarmaci;

    Sammanfattning : The blood-brain barrier (BBB) transport and equilibration of opioids with different physico-chemical properties and similar structures - codeine, morphine, morphine3-glucuronide (M3G) and morphine-6-glucuronide (M6G) - were investigated in rats and mice using microdialysis. The influences of active efflux pumps, P-glycoprotein (Pgp) and multidrug resistance protein (MRP1), on the BBB transport of morphine and M3G were studied. LÄS MER

  4. 14. Octupole collectivity and E1 moments in neutron rich nuclei

    Författare :Axel Lindroth; Uppsala universitet; []
    Nyckelord :NATURAL SCIENCES; NATURVETENSKAP; NATURVETENSKAP; NATURAL SCIENCES; Nuclear physics; Kärnfysik; Nuclear physics; Kärnfysik; Applied Nuclear Physics; tillämpad kärnfysik;

    Sammanfattning : Spectroscopy of short-lived fission and reaction products has allowed a detailed structural study of neutron rich nuclei just above above 132Sn and 208Pb, respectively. The low-energy structures of 140Xe and 143Ba as well as a handful of neutron rich nuclei in the actinide region were examined. LÄS MER

  5. 15. Tilted Foils Nuclear Spin Polarization and Measurement with Coulomb Excitation

    Författare :Hans Törnqvist; Chalmers University of Technology; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Tilted; Foils; Polarization; Excitation; Coulomb; Nuclear; Spin;

    Sammanfattning : Developing new experimental tools is essential to expand the possibilites of probing the structure of atomic nuclei. The better the currently known properties of nuclei can be manipulated, the more information can be extracted from data collected in nuclear reaction experiments. LÄS MER