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  • Electronic Resource  (7)
  • Computed tomography  (3)
  • Polymer and Materials Science  (3)
  • Depression  (1)
  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Neuroradiology 18 (1979), S. 185-192 
    ISSN: 1432-1920
    Keywords: Computed tomography ; Ischemic cerebral infarcts ; CT fogging effect
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Systematic CT studies on ten patients with persistent ischemic cerebral infarct revealed a constant phenomenon, the fogging effect. The hypodense infarct at the beginning will be isodense, or close to isodense, on the plain CT during the second or third weeks and at a later stage will be hypodense again. The fogging infarcted area shows homogeneous intensive contrast enhancement. Knowledge of the fogging effect is important for correct interpretation of the CT image and the indication for contrast medium CT. CT without contrast medium may lead to misinterpretation during the second and third weeks after the onset of cerebral infarction.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1432-1459
    Keywords: Parkinson's disease ; Cerebral atrophy ; Arteriosclerosis ; Computed tomography ; CT
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung Computertomographische Untersuchungen von Parkinsonkranken haben in einem hohen Prozentsatz Zeichen einer Hirnatrophie ergeben, in den meisten Fällen eine Kombination von kortikaler Atrophie und Ventrikelerweiterung. In der vorliegenden Untersuchung wurde den Beziehungen zwischen Hirnatrophie und körperlichen Befunden, die eine Arteriosklerose anzeigen oder deren Entstehung begünstigen, wie Übergewicht, EKG-Veränderungen, Hypertonie, Verkalkungen der A. carotis interna und der Aorta sowie einer Aortenlongation nachgeganen. Die Untersuchung basiert auf 173 behandelten und unbehandelten Parkinsonkranken (89 Männer, 84 Frauen) im Alter von 37–84 Jahren (mittleres Alter 64,6 J.), bei denen eine Computertomographie nach durchschnittlich 5,4 Jahren Krankheitsdauer durchgeführt wurde. Die Ergebnisse zeigen einen Anstieg sowohl von pathologischen CT-Befunden als auch von Verkalkungen im Carotissiphon mit zunehmendem Alter. Zwischen den übrigen Merkmalen und dem Alter bestehen keine Zusammenhänge. Die weitere Analyse ergab eine statistisch relevante Beziehung lediglich zwischen Hirnatrophie und Karotissiphonverkalkungen, insbesondere solchen der Media. Da sowohl die hirnatrophischen Veränderungen als auch die Verkalkungen des Karotissiphons mit höherem Lebensalter korreliert sind, während alle übrigen Merkmale, die als Zeichen einer Arteriosklerose angesehen werden können, keine eindeutigen Beziehungen zum Ausmß hirnatrophischer Veränderungen zeigen, ist zu folgern, daß die Hirnatrophie im Rahmen der Parkinsonschen Krankheit nicht durch arteriosklerotische Veränderungen verursacht wird.
    Notes: Summary Computed tomographic examinations of parkinsonian patients revealed a high incidence of cerebral atrophy, in most cases a combination of cortical atrophy and ventricular enlargement. The present study considered the relationship between cerebral atrophy and physical signs indicating or promoting arteriosclerosis such as overweight, electrocardiographic changes, hypertension, calcification of the internal carotid artery and aorta as well as elongation of the aorta. The study is based on 173 treated and untreated parkinsonian patients (89 men, 84 women) aged from 37–84 years (mean 64.6), on whom CT was performed about 5.4 years after the onset of the first symptoms of the illness. The results demonstrate an increase of pathological CT findings as well as of calcification in the carotid siphon with advanced age. No correlation was found between the other items and increasing age. Further analysis of the relationship between cerebral atrophy and signs of arteriosclerosis revealed only a statistically relevant correlation with calcification of the carotid siphon, especially with calcification of the media. Since pathological CT findings and calcification of the internal carotid artery are both related to advanced age, whereas all the other items which may be considered to be indications of arteriosclerosis do not have any clear relationship, it is concluded that the cerebral atrophy in Parkinson's disease is not caused by arteriosclerosis.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    European archives of psychiatry and clinical neuroscience 227 (1979), S. 81-88 
    ISSN: 1433-8491
    Keywords: Brain atrophy ; Parkinson's disease ; Computed tomography
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary To clarify the importance of brain atrophy in relation to the symptoms of Parkinson's disease, 173 patients were examined by computed tomography (CT). In 51.4% of the CT findings, brain atrophy was considered to be pathological. Statistically significant relations of age and sex were found with regard to the extent and localization of brain atrophy. Cortical atrophy also showed a significant dependence on duration of disease. Linear measurements at the lateral ventricles and the third ventricle lead us to assume that brain atrophy in Parkinson's patients is more prevalent than in normal patients within the scope of age involution.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    European archives of psychiatry and clinical neuroscience 234 (1984), S. 118-124 
    ISSN: 1433-8491
    Keywords: Life-events ; Neurosis ; Schizophrenia ; Depression ; Stress ; Lebensereignisse ; Neurosen ; Schizophrenie ; Depression ; Stress
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung An einer Stichprobe von 112 psychisch kranken Patienten wurde im Vergleich mit 70 körperlich Kranken analysiert, wie hdufig psychische Erkrankungen im Zusammenhang mit belastenden Lebensereignissen stehen. Es zeigten sich erhebliche Unterschiede der Life-event-Belastung zwischen den psychisch Kranken and der Kontrollgruppe sowie zwischen den einzelnen diagnostischen Gruppen. Die Life-event-Belastung war am ausgeprdgtesten bei den neurotisch Kranken. Auch bei den endogenen Psychosen, insbesondere bei den Schizophrenien, fand sich eine vermehrte Life-event-Belastung. Verschiedene Methoden (objektive Belastungswerte nach Paykel, vom Patienten angegebene Negativscores, Synthese aus objektiven and subjektiven Bewertungen) führten bei den Gruppenvergleichen zu vergleichbaren Resultaten. Vom Patienten als positiv bewertete Life-events standen nicht in Zusammenhang mit psychischen Erkrankungen.
    Notes: Summary A sample of 112 psychiatric inpatients were examined in comparison to 70 somatic inpatients with respect to the question, how frequent psychiatric diseases were in correlation with stressful life-events. There were significant discrepancies concerning life-event stress between the diagnostic subgroups. The life-event stress was most important in the neurotic patients, also patients suffering from endogenous psychoses, especially schizophrenics, showed an increased life-event stress. Different methods (objective stress scores suggested by Paykel, self-rating scores concerning negative experiences, and a synthesis between these two methods) led to similar results. Experiences, rated positive by the patients, showed no correlation with psychiatric diseases.
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Angewandte Makromolekulare Chemie 181 (1990), S. 85-91 
    ISSN: 0003-3146
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Description / Table of Contents: Formstoffe aus aromatischen Polyepoxiden, aromatischen Polyaminen mit hochtemperaturbeständigen Strukturelementen sowie pulverförmigen Füllstoffen besitzen hervorragende Eigenschaften, wie hohe Glasübergangstemperatur, hohemechanische Festigkeit, kleinen thermischen Ausdehnungskoeffizienten und Schwerbrennbarkeit ohne Zugabe von Flammschutzmitteln. Über die Synthese dieser aromatischen Polyamine, die Herstellung und Verarbeitung der Niederdruckpreßmassen sowie die Eigenschaften der Formstoffe wird berichtet.
    Notes: Moulded materials produced from aromatic epoxide resins, aromatic polyamines with high-temperature-resistant structure units and powdered mineral fillers possess outstanding properties like high glass transition temperatures, high mechanical strength, low linear thermal expansion coefficient, and reduced flammability without the addition of flame retardants. An account is given of the synthesis of aromatic polyamines, the preparation and working of moulding materials and the properties of the finished products.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Bognor Regis [u.a.] : Wiley-Blackwell
    Journal of Polymer Science Part B: Polymer Physics 24 (1986), S. 1675-1682 
    ISSN: 0887-6266
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: The thermal behavior and crystal transformation of poly(p-benzamide) are reported. Modification I contains both solvent (N,N-dimethylacetamide) and LiCl in its crystal lattice. Modification II is likely to form a complex crystal with LiCl, whereas crystalline modification III contains neither solvent nor LiCl in its unit cell. The crystal transformation temperature from modification I to II is 214°C, and the crystal-nematic transition temperatures of modification II and III are 475 and 544°C, respectively. Modification III can be obtained from II by heating above 475°C and cooling, or by washing with water. It can also be obtained from modification I by washing with water and annealing.
    Additional Material: 6 Ill.
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    Bognor Regis [u.a.] : Wiley-Blackwell
    Journal of Polymer Science Part B: Polymer Physics 24 (1986), S. 1115-1119 
    ISSN: 0887-6266
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: The morphological features of poly(p-benzamide) films cast in a magnetic field from solutions in N,N-dimethylacetamide containing LiCl are reported. Three crystal modifications are found, one solvated and the other two containing no solvent. The solvated crystal grown in a magnetic field is oriented with the molecules parallel to the field. It transforms to an oriented amorphous phase by loss of solvent, and this conversion is accelerated by the presence of moisture. Upon annealing at an elevated temperature, the crystalline solvate transforms to a second crystal form, while the amorphous sample is converted to a third crystalline modification. All three crystalline forms have almost the same fiber identity period, which corresponds to a nearly fully extended chain conformation.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
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