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Träfflista för sökning "WFRF:(Berglund M) srt2:(2000-2004)"

Sökning: WFRF:(Berglund M) > (2000-2004)

  • Resultat 11-20 av 133
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11.
  • Abrahamsson, M. L. A., et al. (författare)
  • Ruthenium-manganese complexes for artificial photosynthesis : Factors controlling intramolecular electron transfer and excited-state quenching reactions
  • 2002
  • Ingår i: Inorganic Chemistry. - : American Chemical Society (ACS). - 0020-1669 .- 1520-510X. ; 41:6, s. 1534-1544
  • Tidskriftsartikel (refereegranskat)abstract
    • Continuing our work toward a system mimicking the electron-transfer steps from manganese to P-680(+) in photosystem II (PS II), we report a series of ruthenium(II)-manganese(II) complexes that display intramolecular electron transfer from manganese(II) to photooxidized ruthenium(III). The electron-transfer rate constant (k(ET)) values span a large range, 1 X 10(5)-2 x 10(7) s(-1), and we have investigated different factors that are responsible for the variation. The reorganization energies determined experimentally (lambda = 1.5-2.0 eV) are larger than expected for solvent reorganization in complexes of similar size in polar solvents (typically lambda approximate to 1.0 eV). This result indicates that the inner reorganization energy is relatively large and, consequently, that at moderate driving force values manganese complexes are not fast donors. Both the type of manganese ligand and the link between the two metals are shown to be of great importance to the electron-transfer rate. In contrast, we show that the quenching of the excited state of the ruthenium(II) moiety by manganese(II) in this series of complexes mainly depends on the distance between the metals. However, by synthetically modifying the sensitizer so that the lowest metal-to-ligand charge transfer state was localized on the nonbridging ruthenium(II) ligands, we could reduce the quenching rate constant in one complex by a factor of 700 without changing the bridging ligand. Still, the manganese(II)-ruthenium (III) electrontransfer rate constant was not reduced. Consequently, the modification resulted in a complex with very favorable properties.
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12.
  • Adams, D, et al. (författare)
  • Measurement of the SMC muon beam polarisation using the asymmetry in the elastic scattering off polarised electrons
  • 2000
  • Ingår i: NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT. - : ELSEVIER SCIENCE BV. - 0168-9002. ; 443:1, s. 1-19
  • Tidskriftsartikel (refereegranskat)abstract
    • A muon beam polarimeter was built for the SMC experiment at the CERN SPS, for beam energies of 100 and 190 GeV. The beam polarisation is determined from the asymmetry in the elastic scattering off the polarised electrons of a ferromagnetic target whose ma
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14.
  • Akesson, A, et al. (författare)
  • Cadmium exposure in pregnancy and lactation in relation to iron status
  • 2002
  • Ingår i: American Journal of Public Health. - : American Public Health Association. - 1541-0048 .- 0090-0036. ; 92:2, s. 284-287
  • Tidskriftsartikel (refereegranskat)abstract
    • Objectives. The purpose of this study was to determine the impact of iron status on cadmium dose among pregnant women. Methods. Iron status and cadmium concentration in blood, urine, and placenta were determined among women followed for 2 years from early pregnancy. Results. Blood cadmium and urinary cadmium were correlated with iron status throughout the study period. Urinary cadmium increased longitudinally among women with exhausted iron stores during their pregnancy. The increase in urinary cadmium with age was more pronounced in multiparous than in nulliparous women. Conclusions. Iron deficiency during pregnancy leads to increased cadmium absorption and body burden. Multiparous women exhibit additional increases with increasing age.
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19.
  • Berglund, M, et al. (författare)
  • Metal-bone interactions
  • 2000
  • Ingår i: Toxicology letters. - : Elsevier BV. - 0378-4274. ; 112112-113, s. 219-225
  • Tidskriftsartikel (refereegranskat)
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20.
  • Berglund, Mats, et al. (författare)
  • Summary of comparative effectiveness.
  • 2004
  • Ingår i: Proposal for the Inclusion of Methadone in the Who Model List of Essential Medicines. ; , s. 13-22
  • Bokkapitel (refereegranskat)
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  • Resultat 11-20 av 133
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Berglund, M (34)
Berglund, Göran (18)
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Berglund, A. (8)
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