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  • Physics  (2)
  • Semithin sections  (1)
  • 1
    Electronic Resource
    Electronic Resource
    Germ cell counts in semithin sections of biopsies of 115 unilaterally cryptorchid testes (1987)
    Springer
    European journal of pediatrics 146 (1987), S. S25 
    Details
    ISSN: 1432-1076
    Keywords: Unilateral cryptorchidism ; Germ cell count ; Semithin sections
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract One hundred and fifteen biopsies from unilateral cryptorchid prepubertal patients were embedded in Epon. Semithin sections were examined by light microscope and the germ cell count per tubule was calculated. The mean number of germ cells was normal from birth to 12 months of age and dropped below the lower limits of normal between 1 and 2 years. Germ cell counts rose considerably during the 18-months observation period with the highest counts occurring in the last 6 months. Variability in the clinical diagnosis of cryptorchidism or inherent heterogeneity in the testicular histology of cryptorchidism are possible explanations.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00452864
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Optical absorption spectrum of PMMA via laser calorimetry (1983)
    New York : Wiley-Blackwell
    Journal of Polymer Science: Polymer Physics Edition 21 (1983), S. 647-655 
    Details
    ISSN: 0098-1273
    Keywords: Physics ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: The optical absorption spectrum of poly(methyl methacrylate) (PMMA) has been obtained in the wavelength range 570-780 nm via laser calorimetry (employing a dye laser source). Because of the low thermal conductivity of PMMA, the complete solution to the heat conduction equation (carried out numerically) was required in the analysis of the data. At the wavelength of minimum absorption (near 647 nm), the absorption coefficient had the value 153 dB/km.
    Additional Material: 6 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pol.1983.180210413
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Optical absorption of perdeuterated PMMA and influence of water (1984)
    New York : Wiley-Blackwell
    Journal of Polymer Science: Polymer Physics Edition 22 (1984), S. 1607-1613 
    Details
    ISSN: 0098-1273
    Keywords: Physics ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: The optical absorption coefficient of perdeuterated poly(methyl methacrylate) has been obtained by laser calorimetry at 568.2, 647.1, 676.4, and 752.5 nm. The lowest value of 18 dB/km is obtained at 647.1 nm. The dramatic effect of water uptake by the polymer on the total optical attenuation spectrum in the wavelength range 500-1000 nm has been investigated.
    Additional Material: 6 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pol.1984.180220904
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    Paper (German National Licenses)
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