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Träfflista för sökning "WFRF:(Roomans Godfried M) srt2:(1980-1984)"

Sökning: WFRF:(Roomans Godfried M) > (1980-1984)

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1.
  • Malmqvist, Klas, et al. (författare)
  • Proton and Electron Microprobe Analysis of Human Skin
  • 1984
  • Ingår i: Nuclear Instruments & Methods in Physics Research. Section B: Beam Interactions with Materials and Atoms. - 0168-583X. ; 3:1-3, s. 611-617
  • Tidskriftsartikel (refereegranskat)abstract
    • In order to demonstrate the feasibility of the proton microprobe in the analysis of dermatological material when a spatial resolution of a few micrometres is sufficient and to compare it with the electron microprobe technique, duplicate sections of human skin have been analysed with both methods. A skin sample was obtained from each of three healthy volunteers. After cryosectioning (12 μm) and freeze-drying adjacent sections of each sample were scanned by the electron microprobe and the proton microprobe, respectively.
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2.
  • Roomans, Godfried M., 1951-2014 (författare)
  • Quantitative electron probe X-ray microanalysis of biological specimens
  • 1980
  • Doktorsavhandling (övrigt vetenskapligt/konstnärligt)abstract
    • The application of quantitative methods in electron probe X-ray microanalysis of biological specimens expands the scope of this technique. Accurate quantitation in biological X-ray microanalysis is not easy and a number of difficulties is typical for biological specimens. This thesis presents: (1) a method to optimize the instrumental configuration by minimizing the contribution of extraneous sources to the X-ray spectrum through the use of a carbon specimen holder, (2) methods to prepare standards for analysis of thin cryosections, thin sections of resin-embedded tissue and bulk specimens, (3) practical methods to carry out the quantitative determinations and calculations. The applications of quantitative electron probe X-ray microanalysis include: distribution of K and Na in the mould Neurospora crassa, and of Br in the marine red alga Chondrus crispus, and three applications in the field of human pathology: X-ray microanalysis of single muscle fibres, diagnosis of cystic fibrosis, and the demonstration of copper in 'green hair'.
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