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Träfflista för sökning "WFRF:(Martin S.) srt2:(1990-1994)"

Sökning: WFRF:(Martin S.) > (1990-1994)

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1.
  • Clavel, J., et al. (författare)
  • Steps toward determination of the size and structure of the broad-line region in active galactic nuclei. I. An 8 month campaign of monitoring NGC 5548 with IUE
  • 1991
  • Ingår i: Astrophysical Journal. - : American Astronomical Society. - 0004-637X .- 1538-4357. ; 366:1, s. 64-8181
  • Tidskriftsartikel (refereegranskat)abstract
    • The authors present emission-line and ultraviolet continuum observations of a type I Seyfert galaxy in which the time resolution is adequate for describing the character of variability. Using the IUE satellite, the nucleus of NGC 5548 was observed every 4 days for a period of 8 months. Its mean properties-continuum shape, line ratios-are not unusual for type I Seyfert galaxies, but it was found to be strongly variable. The ultraviolet continuum flux and broad emission line fluxes varied significantly, going through three large maxima and three deep minima. The great majority of all variations were well resolved in time. The data lend qualitative support to the view that photoionization by the nuclear continuum is responsible for driving the emission lines
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2.
  • Karlsson, Jonas S, et al. (författare)
  • AMOS.v1 User's Guide
  • 1994
  • Rapport (övrigt vetenskapligt/konstnärligt)
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  • Vult von Steyern, Fredrik, et al. (författare)
  • Protein secretion from mouse skeletal muscle: coupling of increased exocytotic and endocytotic activities in denervated muscle
  • 1993
  • Ingår i: Cell and Tissue Research. - 1432-0878. ; 274:1, s. 49-56
  • Tidskriftsartikel (refereegranskat)abstract
    • The secretion of proteins labelled by incorporation of radioactive amino acids was studied in innervated and 10 to 13-day-denervated mouse skeletal muscle. The secretion of 3H-leucine-labelled proteins, expressed per mg muscle wet weight, increased after denervation, and the kinetics of the secretory process was also altered in denervated muscle. Separation of secreted 35S-methionine-labelled proteins by sodium dodecyl sulphate polyacrylamide gel electrophoresis followed by autoradiography revealed some denervation-induced alterations in the pattern of secreted proteins. The secretion from both innervated and denervated muscle was highly temperature sensitive and was reversibly inhibited by brefeldin A, a drug that blocks forward membrane transport from the endoplasmic reticulum/Golgi apparatus. This drug was also found to inhibit the uptake of fluorescein isothiocyanate-labelled dextran in denervated muscle but had no effect on the endocytotic activity of innervated muscle. This lends support to the hypothesis that the increased endocytotic activity in denervated muscle is coupled to a high secretory activity.
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