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  • Polymer and Materials Science  (5)
  • Osteosarcoma  (2)
  • Platyspondyly  (2)
  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Skeletal radiology 20 (1991), S. 589-590 
    ISSN: 1432-2161
    Keywords: Ehlers ; Danlos ; Platyspondyly ; Anisospondyly
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Three patients with Ehlers-Danlos syndrome have been observed to have isolated flattening of the lumbar vertebral bodies. Flattening of the lumbar vertebrae with normal appearance of the rest of the spine may be an important radiological clue to early recognition or confirmation of the diagnosis of Ehlers-Danlos syndrome.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Pediatric radiology 10 (1980), S. 42-45 
    ISSN: 1432-1998
    Keywords: Rothmund-Thomson syndrome ; Osteosarcoma
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract The first case of osteosarcoma in a 13 year old boy with Rothmund-Thomson syndrome is reported. The association between these two conditions in uncertain.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Pediatric radiology 6 (1977), S. 32-35 
    ISSN: 1432-1998
    Keywords: Trauma ; Disc prolaps ; Scheuermann's disease ; Tuberculosis ; Discitis ; Platyspondyly ; Osteoarthritis
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Four boys with anterior lumbar disc herniations probably secondary to chronic trauma are reported. Anterior disc herniations may appear as separate lesions — as in our patients — or coexist with Scheuermann's disease. Although Scheuermann's disease, discitis and tuberculosis are regarded as the most common causes of intervertebral disc lesions in childhood, trauma should be excluded as a possible cause in all children with chronic back pain who show localised radiographic signs of narrowed disc spaces with erosive and sclerotic changes in the adjacent vertebrae. Localised mild platyspondyly may be the result of abnormal, prolonged stress and early osteoarthritic changes are to be expected.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    Pediatric radiology 9 (1980), S. 167-170 
    ISSN: 1432-1998
    Keywords: Osteosarcoma ; Pulmonary metastases
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Five cases of osteosarcoma with rare clinical and/or radiographic findings are reported. A bony neoplasm should be suspected in each case with unexplained local or generalised sings and/or symptoms.
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Acta Polymerica 30 (1979), S. 616-618 
    ISSN: 0323-7648
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Description / Table of Contents: Die elektrische Leifähigkeit von Polyesterharzen, die mit 5% Styrol bzw. 45% Methylmethacrylat vernetzt und mit Acetylenruß dotiert waren, wurde gemessen. Eine starke Änderung der Leitfähigkeit der Mischung wurde bei einem kritischen Rußgehalt festgestellt, der in Abhängigkeit von Art und Menge des Vernetzungsmittels bei 0,4 bis 0,6 Masse-% liegt. Die erhaltenen Ergebnisse befinden sich in Übereinstimmung mit der Interpretation von früheren Leitfähigkeitsmessungen an einer Mischung mit 55% Styrolgehalt.
    Notes: The electrical conductivity of polyester resins cross-linked with 5% of styrene and 45% of methyl methacrylate and doped with acetylene carbon black has been investigated. A high change of the electrical conductivity of the mixture was found at a critical content of carbon black ranging from 0.4 to 0.6 parts of carbon black per hundred parts of resin depending on the quantity and type of the cross-linking agent used. The results obtained are in good agreement with the formerly interpretation of conductivity accepted for the mixture containing 55% of styrene.
    Additional Material: 6 Ill.
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Acta Polymerica 30 (1979), S. 681-684 
    ISSN: 0323-7648
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Description / Table of Contents: Der Zusammenhang zwischen der Konzentration paramagnetischer Zentren sowie der ESR-Linienbreite und der elektrischen Leitfähigkeit eines mit unterschiedlichen Mengen von Acetylenruß dotierten Polyesterharzes wurde untersucht. Zwischen dem ESR-Spektrum und der elektrischen Leitfähigkeit des Polymers wurden in Abhängigkeit von der Polymerisationstemperatur und der Initiatorkonzentration bestimmte Korrelationen gefunden. Diese Korrelationen bestätigen den Leitfähigkeitsmechanismus der Komposition, der auf der Bildung leitender Bindungen zwischen den Rußteichen und den Polyestermakromolekülen bei der radikalischen Polymerisation beruht.
    Notes: The dependence between paramagnetic centre concentration, as well as ESR spectral line width and electrical conductivity of a polyester resin doped with various admixtures of acetyelene carbon black has been investigated. Distinct correlations have been found between ESR spectrum and electrical conductivity of the resin as a function of polymerization temperature and accelerant concentration. The correlations confirm the mechanism of the electrical conductivity of the composition which is based on formation of conducting bonds between the carbon black particles and the polyester macromolecules in process of the free radical polymerization.
    Additional Material: 8 Ill.
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Acta Polymerica 30 (1979), S. 716-716 
    ISSN: 0323-7648
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    New York : Wiley-Blackwell
    Journal of Polymer Science: Polymer Chemistry Edition 15 (1977), S. 1359-1367 
    ISSN: 0360-6376
    Keywords: Physics ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: An ESR method was used to investigate the formation of free radicals during rubber mastication and filling of rubber with various carbon blacks. The ESR spectra of natural rubber and styrenebutadiene rubber with various carbon blacks are of a complex character. A narrow component line is superimposed on the much broader signal line of carbon black. The changes in this narrow spectral line with plasticization time and with carbon black content in the rubber-filler system result from interactions between the rubber macromolecules and filler particles.
    Additional Material: 9 Ill.
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    New York : Wiley-Blackwell
    Journal of Polymer Science: Polymer Letters Edition 14 (1976), S. 79-84 
    ISSN: 0360-6384
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
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