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Träfflista för sökning "WFRF:(Sjöholm H) ;pers:(Persson Linda)"

Sökning: WFRF:(Sjöholm H) > Persson Linda

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1.
  • Persson, Linda, et al. (författare)
  • Diode laser absorption spectroscopy for studies of gas exchange in fruits
  • 2006
  • Ingår i: Optics and Lasers in Engineering. - : Elsevier BV. - 0143-8166. ; 44:7, s. 687-698
  • Tidskriftsartikel (refereegranskat)abstract
    • Gas exchange in fruits, in particular oxygen transport in apples, was studied non-intrusively using wavelength modulation diode laser absorption spectroscopy at about 761 run, applied to the strongly scattering intact fruit structure. The applicability of the technique was demonstrated by studies of the influence of the skin to regulate the internal oxygen balance and of cling film in modifying it by observing the response of the signal from the internal oxygen gas to a transient change in the ambient gas concentration. Applications within controlled atmosphere fruit storage and modified atmosphere packaging are discussed. The results suggest that the technique could be applied to studies of a large number of problems concerning gas exchange in foods and in food packaging. (c) 2005 Elsevier Ltd. All rights reserved.
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2.
  • Somesfalean, Gabriel, et al. (författare)
  • Temporal correlation scheme for spectroscopic gas analysis using multimode diode lasers
  • 2005
  • Ingår i: Applied Physics Letters. - : AIP Publishing. - 0003-6951 .- 1077-3118. ; 86:18
  • Tidskriftsartikel (refereegranskat)abstract
    • The reliability of diode lasers used in spectroscopic applications is limited by their intrinsic multimode and mode-jump behavior when wavelength-tuned by current or temperature. We report on a scheme for gas analysis based on temporal correlation between absorption signals from an unknown external and a known reference gas concentration, simultaneously recorded when the diode laser wavelength is temperature-tuned across absorption features of the gas of interest. This procedure, which does not require any knowledge of the exact spectrum, also eliminates light intensity fluctuations due to mode competition. The method is illustrated for atmospheric oxygen absorption applied to diffusion measurements.
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  • Resultat 1-2 av 2
Typ av publikation
tidskriftsartikel (2)
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refereegranskat (2)
Författare/redaktör
Svanberg, Sune (2)
Gao, H. (2)
Sjöholm, Mikael (2)
Persson, Linda (2)Ta bort avgränsningen
Svensson, Tomas (1)
Somesfalean, Gabriel (1)
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Lunds universitet (2)
Språk
Engelska (2)
Forskningsämne (UKÄ/SCB)
Naturvetenskap (2)

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