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Träfflista för sökning "WFRF:(Brown J N) srt2:(1995-1999)"

Search: WFRF:(Brown J N) > (1995-1999)

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  • Andersson, T., et al. (author)
  • High-spin States in the A=39 Mirror Nuclei 39Ca and 39K
  • 1999
  • In: European Physical Journal A. Hadrons and Nuclei. - 1434-6001. ; 6, s. 5-8
  • Journal article (peer-reviewed)abstract
    • High-spin states of the mass A = 39 mirror pair K-39 and Ca-39 were investigated via the fusion-evaporation reaction Si-28+O-16 at 125 MeV beam energy. The GAMMASPHERE array in conjunction with the 4 pi charged-particle detector array MICROBALL and neutron detectors was used to detect gamma rays in coincidence with evaporated light particles. The results of the first high-spin study of the T-z = -1/2 nucleus Ca-39 are discussed in terms of mirror symmetry and compared to spherical shell-model calculations in the 1d(3/2)-1f(7/2) configuration space.
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  • BLOMGREN, J, et al. (author)
  • SEARCH FOR DOUBLE GAMOW-TELLER STRENGTH BY HEAVY-ION DOUBLE-CHARGE-EXCHANGE
  • 1995
  • In: PHYSICS LETTERS B. - 0370-2693. ; 362:1-4, s. 34-38
  • Journal article (peer-reviewed)abstract
    • We have carried out a search for double Gamow-Teller excitations, employing the Mg-24(O-18,Ne-18)Ne-24 reaction at 100 and 76 MeV/nucleon at NSCL-MSU and GANIL, respectively, The cross sections for low-lying excitations are typically a few nb/sr, providin
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  • Hagell, Peter, et al. (author)
  • Sequential bilateral transplantation in Parkinson's disease: effects of the second graft
  • 1999
  • In: Brain. - : Oxford University Press (OUP). - 1460-2156. ; 122:6, s. 1121-1132
  • Journal article (peer-reviewed)abstract
    • Five parkinsonian patients who had received implants of human embryonic mesencephalic tissue unilaterally in the striatum 10-56 months earlier were grafted with tissue from four to eight donors into the putamen (four patients) or the putamen plus the caudate nucleus (one patient) on the other side, and were followed for 18-24 months. After 12-18 months, PET showed a mean 85% increase in 6-L-[18F]fluorodopa uptake in the putamen with the second graft, whereas there was no significant further change in the previously transplanted putamen. Two patients exhibited marked additional improvements after their second graft: 'on-off' fluctuations virtually disappeared, movement speed increased, and L-dopa could be withdrawn in one patient and reduced by 70% in the other. The improvement in one patient was moderate. Two patients with atypical features, who responded poorly to the first graft, worsened following the second transplantation. These findings indicate that sequential transplantation in patients does not compromise the survival and function of either the first or the second graft. Moreover, putamen grafts that restore fluorodopa uptake to normal levels can give improvements of major therapeutic value.
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