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  • 1
    Electronic Resource
    Electronic Resource
    The Electron Momentum Distribution of LiMg Alloys by Positron-Annihilation 2D-ACAR (1992)
    s.l. ; Stafa-Zurich, Switzerland
    Materials science forum Vol. 105-110 (Jan. 1992), p. 501-510 
    Details
    ISSN: 1662-9752
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/59/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.105-110.501.pdf
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  • 2
    Electronic Resource
    Electronic Resource
    Platelet and lymphocyte free intracellular calcium in affective disorders (1994)
    Springer
    European archives of psychiatry and clinical neuroscience 243 (1994), S. 235-239 
    Details
    ISSN: 1433-8491
    Keywords: Intracellular calcium ; Affective disease ; Platelets ; Lymphocytes
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Many studies have demonstrated pharmacologic similarities between platelet and brain 5-HT2 binding sites. Therefore it may be possible to use platelets as a model for the central serotonergic neuron. Accordingly, a previcus report (Kusumi et al. 1991b) about elevated [Ca2+]i after serotonin stimulation in platelets of depressed patients was interpreted as further evidence for enhanced serotonergic sensitivity in depression. However, a very recent study showed an enhanced thrombin-induced platelet Ca2+ response, rather suggesting abnormalities of intracellular Ca2+ regulation in affective disorders. In the present study we have determined 5-HT2-and thrombin-induced Ca2+ responses in platelets and additionally phytohemagglutin (PHA)-induced Ca2+ increase in lymphocytes of medicated depressed patients (8 mono- and 2 bipolar, HRSD〉17) and of ten sex- and age-matched controls. The results showed no significant difference in basal calcium levels between the two groups and no significant difference in the Ca2+ response to thrombin although the response was higher in the patients. The Ca2+ increase after serotonin stimulation in depressed patients was significantly (P〈0.05) higher than in healthy controls. By contrast, the Ca2+ response to PHA in lymphocytes was significantly decreased in the patients. Our data confirm elevated Ca2+ responses after 5-HT2 receptor activation even in medicated depressed patients. However, Ca2+ responses in lymphocytes were decreased. Together with the observations of an enhanced Ca2+ response in platelets after thrombin stimulation, we speculate that the findings rather suggest alterations of [Ca2]i regulation in depression than specific changes of serotonergic sensitivity.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02191580
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  • 3
    Electronic Resource
    Electronic Resource
    Zeitstandverhalten warmfester Stähle bei zyklischer und bei intermittierender BeanspruchungHerrn Professor Dr.-lng. K. H. Kloos tum 60. Geburtstag gewidmet (1990)
    Weinheim : Wiley-Blackwell
    Materialwissenschaft und Werkstofftechnik 21 (1990), S. 213-220 
    Details
    ISSN: 0933-5137
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Description / Table of Contents: Creep and Creep Rupture Behaviour of Heat Resistant Steels under Cyclic and Intermittent Loading ConditionsOn typical heat resistant steels creep and creep rupture tests under rectangular cyclical conditions of tension stress or/and temperature were continued. Comparable creep and creep rupture tests with tension and compression phases and with intermittent loading conditions were started. Besides this single-stage loading conditions, double-stage loading conditions were investigated. The test results are analysed with the modified life fraction rule. Concepts of relative life are improved and partly new established.
    Notes: An kennzeichnenden warmfesten Stählen wurden Zugzeitstandversuche unter rechteckzyklisch veränderter Spannung oder bzw. und Temperatur weitergeführt und Zeitstandversuche mit Zug und Druckphasen sowie mit intermittierender Zugbeanspruchung neu aufgenommen. Neben diesen Fällen einstufiger Beanspruchung wurden auch Fälle mit zweistufiger Beanspruchung untersucht. Die Versuchsergebnisse werden mit der modifizierten Lebensdaueranteilregel analysiert und für die einzelnen Beanspruchungsfälle werden Konzepte der relativen Lebensdauer fortgebildet und teilweise neu entwickelt.
    Additional Material: 11 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/mawe.19900210510
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  • 4
    Electronic Resource
    Electronic Resource
    Dimensions- und Dichteänderung von Polymidformteilen durch WasseraufnahmeHerrn Prof. Dr. D. Braun zum 60. Geburtstag Gewidmet (1991)
    Weinheim : Wiley-Blackwell
    Angewandte Makromolekulare Chemie 185 (1991), S. 51-60 
    Details
    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: The crystallization and solidification behaviour of polyamides are influenced by additives such as nucleating agents or fillers. During processing morphological structures are obtained which affect the shrinkage, linear thermal expansion and dimensional changes due to water absorption. By studying the change of volume after water absorption, the dimensional change in length, breadth and thickness are easily understood.
    Notes: Additive in Polyamiden wie Nukleierungsmittel oder Verstärkungsmittel beeinflussen das Kristallisations- und Erstarrungsverhalten. Während der Herstellung von Probekörpern bilden sich morphologische Strukturen, die die Verarbeitungsschwindung, den linearen Ausdehnungskoeffizienten und die Dimensionsänderung während der Wasseraufnahme beeinflussen. Anhand der Volumenänderungen wird der Zusammenhang zwischen der Wasseraufnahme und der Dimensionsänderung in allen drei Raumrichtungen verständlich dargestellt.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/apmc.1991.051850106
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