Sökning: "Per Roos"
Visar resultat 6 - 10 av 17 avhandlingar innehållade orden Per Roos.
6. Manganese and Iron Heterodimers and Homodimers in Enzymes : Insights from Density Functional Theory
Sammanfattning : The enzyme ribonucleotide reductase (RNR) catalyzes the reduction of ribonucleotides to deoxyribonucleotides, the building blocks of DNA, and is essential for all organisms. Canonical class I RNR R2 proteins use a diiron cofactor to generate a tyrosyl radical, which is required for catalysis. LÄS MER
7. Secretory Autoantibodies in Rheumatoid Arthritis
Sammanfattning : Rheumatoid arthritis (RA) is a chronic autoimmune inflammatory disease in which autoantibodies, such as anti-citrullinated protein antibodies (ACPA), can be detected in the serum of patients. Autoantibodies may appear in the circulation years before clinical signs of joint inflammation occur, indicating that early immunological pathogenetic steps take place outside of the joints. LÄS MER
8. Internal Dosimetry in Nuclear Fuel Fabrication : Occupational Exposure to Uranium Aerosols
Sammanfattning : The production of nuclear fuel can be associated with occupational exposure to ionizing radiation from radioactive decay of uranium. Such exposure must be sufficiently low and radiation doses adequately determined. Radiation doses from internal exposure, i.e. LÄS MER
9. Iodine Isotopes and their Species in Surface Water from the North Sea to the Northeastern Atlantic Ocean
Sammanfattning : Huge amounts of anthropogenic 129I have been and still are released to the environment through liquid and gaseous discharges from the nuclear fuel reprocessing facilities worldwide and in particular the ones in Europe. Most of this 129I signal has been accumulated in the marine environment which plays a major role in the iodine natural pool. LÄS MER
10. Optimisation and Application of Intense High-Order Harmonic Pulses
Sammanfattning : The high-order harmonics that are created in the interaction between an intense laser pulse (around 1014 W/cm2) and a gas medium are studied. The high-order harmonic radiation is a relatively new source of coherent radiation in the short wavelength range. LÄS MER