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  • 1
    Digitale Medien
    Digitale Medien
    Pion production in heavy ion reactions induced by16O and84Kr beams at 60 MeV per nucleon (1992)
    Springer
    The European physical journal 342 (1992), S. 199-202 
    Details
    ISSN: 1434-601X
    Schlagwort(e): 25.70.−z ; 25.90.+k
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Physik
    Notizen: Abstract Low energyπ + andπ − production cross sections have been measured in16O at 65 MeV/u and84Kr at 60 MeV/u induced reactions on7Li,12C,27Al,108Ag and197Au. The results are compared with a previous measurement obtained with16O at 93 MeV/u. Large deviations are observed between light and heavy ion data. At variance with16O, the ratiosπ −/π + are independent of the target in the Krypton case. A change in the regime of the projectile-target mass scaling of cross-sections is observed with the heaviest projectile.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF01288470
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  • 2
    Digitale Medien
    Digitale Medien
    Skeletal manifestations of moderate phosphate diabetes (1993)
    Springer
    Clinical rheumatology 12 (1993), S. 192-197 
    Details
    ISSN: 1434-9949
    Schlagwort(e): Reflex Sympathetic Dystrophy Syndrome ; Osteoporosis ; Phosphate Diabetes
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Summary Six patients, with vertebral osteoporosis and reflex sympathetic algodystrophy syndrome of the lower limbs, due to moderate diabetes, are presented. Osteoporosis was documented by low CT scan bone density and moderate decrease of bone trabecular volume. Histomorphometric studies found a mild increase of resorption areas. All patients had unremarkable serum phosphorus level (mean:0.91±0.13) but increase of urinary phosphorus excretion was documented by phosphate clearance higher than 20ml/mm, phosphate tubular reabsorption lower than 80% and TmPo4/GFR lower than 0.8mmol/l. Phosphate clearance and phosphate tubular reabsorption are studied in two control groups. Mild phosphate diabetes, of unknown incidence and prevalence (need for prospective studies) may be the vector of osteoporosis, vertebral and peripheral. The diagnosis of PD requires determination of phosphate clearance, phosphate tubular reabsorption, TmPo4/GFR and these tests may be useful in the diagnostic work up of bone demineralization disorders. We thought that osteoporosis could be the result of progressive dissolution of bone apatite crystals necessary to maintain normal or sub-normal blood phosphate level in spite of the phosphate diabetes.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF02231525
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  • 3
    Digitale Medien
    Digitale Medien
    Uniaxial order induced in anisotropically swollen rubbers: A deuterium NMR approach (1992)
    Bognor Regis [u.a.] : Wiley-Blackwell
    Journal of Polymer Science Part B: Polymer Physics 30 (1992), S. 1419-1421 
    Details
    ISSN: 0887-6266
    Schlagwort(e): nuclear magnetic resonance (NMR) with deuterium probe in anisotropically swollen rubbers ; rubbery polymers, anisotropically swollen deuterium NMR study of order in ; Chemistry ; Polymer and Materials Science
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Chemie und Pharmazie , Physik
    Zusätzliches Material: 3 Ill.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/polb.1992.090301213
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 4
    Digitale Medien
    Digitale Medien
    Radical polymerization of methyl methacrylate in solution monitored and studied by Raman spectroscopy (1992)
    Chichester [u.a.] : Wiley-Blackwell
    Journal of Raman Spectroscopy 23 (1992), S. 385-389 
    Details
    ISSN: 0377-0486
    Schlagwort(e): Chemistry ; Analytical Chemistry and Spectroscopy
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Chemie und Pharmazie , Physik
    Notizen: Raman spectroscopy was used to investigate the kinetics of the free-radical polymerization of methyl methacrylate in toluene, initiated with azobisisobutyronitrile at 70°C. The decrease in the intensity of the 1636 cm-1 C=C stretching band compared with a solvent band as an internal standard allows an accurate determination of the rate of conversion of monomers to polymeric chains. A careful quantitative study of the evolution of the C=O stretch band profile, interpreted in terms of intra-chain dipole-dipole interactions, gives a similar dependence for the conversion.
    Zusätzliches Material: 6 Ill.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/jrs.1250230704
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  • 5
    Digitale Medien
    Digitale Medien
    On the difficulty of attributing a fractal signature to low-frequency Raman spectra of polymers in solution (1994)
    Chichester [u.a.] : Wiley-Blackwell
    Journal of Raman Spectroscopy 25 (1994), S. 313-315 
    Details
    ISSN: 0377-0486
    Schlagwort(e): Chemistry ; Analytical Chemistry and Spectroscopy
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Chemie und Pharmazie , Physik
    Notizen: Measurements of the low-frequency Raman spectra (LFRS) (below 100 cm-1) of poly(methyl methacrylates) in solution are reported. The reduced intensity exhibits a power law dependence on the frequency at any concentration and at any conversion rate of the polymerization reaction. Even monomeric liquids such as toluene and methyl methacrylate show such a power law behaviour. The results are compared with recent theories on low-frequency Raman scattering from fractal structures and suggest that a more careful interpretation of LFRS is needed.
    Zusätzliches Material: 3 Ill.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/jrs.1250250504
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