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Träfflista för sökning "L773:1077 260X OR L773:1558 4542 ;pers:(Svanberg Sune)"

Sökning: L773:1077 260X OR L773:1558 4542 > Svanberg Sune

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1.
  • Gratz, M, et al. (författare)
  • Time-gated imaging in radiology: Theoretical and experimental studies
  • 1996
  • Ingår i: IEEE Journal of Selected Topics in Quantum Electronics. - : Institute of Electrical and Electronics Engineers (IEEE). - 1077-260X. ; 2:4, s. 1041-1048
  • Tidskriftsartikel (refereegranskat)abstract
    • Novel short-pulse X-ray sources, e.g., laser-produced plasmas, offer new approaches to the solution of the scatter-reduction problem in X-ray imaging, by the use of time-gated detection techniques. Monte Carlo simulations are used to estimate the scatter-reduction performance of time-gated imaging techniques within a range of X-ray energies, gating times and tissue parameters, Significant improvements can be achieved for thick tissues combined with high photon energies, Experimental studies on water phantoms are performed using a laser-produced plasma X-ray source. Problems arising on the technical realization are discussed.
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2.
  • Runemark, Anna, et al. (författare)
  • Rare Events in Remote Dark-Field Spectroscopy: An Ecological Case Study of Insects
  • 2012
  • Ingår i: IEEE Journal of Selected Topics in Quantum Electronics. - 1077-260X. ; 18:5, s. 1573-1582
  • Tidskriftsartikel (refereegranskat)abstract
    • In this paper, a novel detection scheme for the monitoring of insect ecosystems is presented. Our method is based on the remote acquisition of passive sunlight scattering by two insect species. Procedures to identify rare events in remote dark-field spectroscopy are explained. We further demonstrate how to reduce the spectral representation, and how to discriminate between sexes, using a hierarchical clustering analysis. One-day cycle showing the temporal activities of the two sexes as well as data on activity patterns in relation to temperature and wind is presented. We also give a few examples of the potential use of the technique for studying interactions between sexes on a time scale of milliseconds.
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