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  • 2005-2009  (3)
  • 1970-1974  (15)
  • 1965-1969  (25)
  • 1955-1959  (7)
  • 1870-1879  (2)
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  • 11
    Electronic Resource
    Electronic Resource
    Temperaturabhängigkeit der Absorptionskoeffizienten für mittelschnelle Elektronen in polykristallinen Aluminium-, Silber- und Goldschichten (1967)
    Springer
    The European physical journal 198 (1967), S. 433-444 
    Details
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The absorption coefficientsμ el andμ unel for fast electrons (30–50 keV) due to elastic and inelastic scattering in polycrystalline foils of Al, Ag and Au have been measured at various temperatures between 160 and 600 °K. It is shown that,μ unel decreases only slightly with temperature. On the other hand, the absorption coefficientμ el, which is composed ofμ R for Laue Bragg scattering andμ TDS for thermal diffuse scattering increases with temperature. Asμ R andμ TDS depend on temperature in opposite sense, the resulting increase ofμ el=μ R+μ TDS with temperature depends on the extent, to which the temperature dependence ofμ R is reduced by dynamical extinction effects. For Al the measured temperature dependence ofμ el is in good agreement with the theoretical calculation ofμ TDS on the basis of the Einstein model and ofμ R according to the two beam approximation of the dynamical theory. For Ag and Au the temperature dependence ofμ el is much more pronounced than for Al. This is due to the facts that for heavy elements firstly the elastic scattering is stronger and secondly dynamical extinction effects are generally more pronounced. In order to study the influence of dynamical extinction, the crystal size of the foils was varied.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01326419
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    Paper (German National Licenses)
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  • 12
    Electronic Resource
    Electronic Resource
    Anatomische und röntgenologische Untersuchungen zur endoskopischen Punktion der großen Körperschlagadern (1955)
    Springer
    European archives of oto-rhino-laryngology and head & neck 168 (1955), S. 101-132 
    Details
    ISSN: 1434-4726
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Zusammenfassung 1. Mit Hilfe der endoskopischen Punktion gelingt es auf einfache Weise und zuverlässig, die großen Körperschlagadern zu erreichen: durch den Oesophagus den distalen Aortenbogen und die absteigende Aorta, durch den proximalen Abschnitt der Hauptbronchien bzw. durch die Seitenwand der Trachea die Pulmonalarterien; der aufsteigende Anteil des Aortenbogens wird pertracheal punktiert. 2. An Hand anatomischer Präparate werden die typischen Einstichstellen gezeigt. 3. Auf Grund von Punktionsstudien an der Leiche wurden Trefferskizzen angefertigt, welche die günstigsten Positionen zur peroesophagealen und pertrachealen Punktion der Aorta und zur pertrachealen Punktion der Art. pulmonalis und ihrer beiden Hauptäste augenfällig machen. 4. Mit Hilfe der Röntgenuntersuchung läßt sich vor der Punktion bestimmen, an welcher Seite, in welcher Höhe und in welcher Richtung eingestochen werden sollte, um die Aorta, die Art. pulmonalis und den linken Vorhof sicher zu erreichen. 5. Die günstigsten Einstichstellen werden für alle wichtigen Punktionsarten angegeben und hierbei Alter, Geschlecht und Konstitution der Patienten berücksichtigt.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02278865
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    Paper (German National Licenses)
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  • 13
    Electronic Resource
    Electronic Resource
    Zur differenzierbarkeit akustischer doppelreize in der objektiven audiometrie (1969)
    Springer
    European archives of oto-rhino-laryngology and head & neck 195 (1969), S. 25-32 
    Details
    ISSN: 1434-4726
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung Nach einem kurzen Einblick in die Problematik der Untersuchung der zentralen Informationsverarbeitung wird auf die Beziehung zwischen dem langsamen Rindenpotential und der subjektiven Empfindung hingewiesen. Durch monaurale Reizung normalhörender Versuchspersonen wurde festgestellt, daß bei Doppelklicks mit einem Intervall von 20 msec die oberflächennegative Welle mit einer Latenz von 90–100 msec zweigipflig wird. Subjektiv kann von den Probanden dieser Doppelimpuls gerade differenziert werden. Die Ergebnisse werden als Bestätigung der engen Korrelation zwischen der subjektiven Empfindung und der negativen Welle des langsamen Rindenpotentials gewertet.
    Notes: Summary The authors have investigated the relationship between slow cortex-potential and subjective sensation. The tests were carried out on people with normal hearing. With monoaurale irritation, when double clicks with an interval of 20 msec applied, a surface-negative wave with a latency of 90–100 msec is showed with 2 peaks. The double impulses could just be differentiated. The results were explained as a confirmation of the close correlation between the subjective sensation of a negative wave and the slow cortex-potential.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00343031
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  • 14
    Electronic Resource
    Electronic Resource
    Die Wirkung von Noradrenalin auf die Einzelzellaktivität in der Formatio reticularis (1967)
    Springer
    Naunyn-Schmiedeberg's archives of pharmacology 257 (1967), S. 43-44 
    Details
    ISSN: 1432-1912
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00537419
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    Paper (German National Licenses)
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  • 15
    Electronic Resource
    Electronic Resource
    Buchbesprechungen (1969)
    Springer
    Naturwissenschaften 56 (1969), S. 519-524 
    Details
    ISSN: 1432-1904
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology , Natural Sciences in General
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00601983
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  • 16
    facet.materialart.
    Unknown
    zu Euripides Cyclops V. 512 ff. (1872)
    Wiesbaden, etc. : Periodicals Archive Online (PAO)
    Hermes. 6 (1872) 383 
    Details
    ISSN: 0018-0777
    Topics: Classical Studies
    Notes: MISCELLEN
    URL: http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&res_dat=xri:pao:&rft_dat=xri:pao:article:5443-1872-006-00-000022
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    Paper (German National Licenses)
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  • 17
    facet.materialart.
    Unknown
    die Evocati (1879)
    Wiesbaden, etc. : Periodicals Archive Online (PAO)
    Hermes. 14 (1879) 321 
    Details
    ISSN: 0018-0777
    Topics: Classical Studies
    URL: http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&res_dat=xri:pao:&rft_dat=xri:pao:article:5443-1879-014-00-000039
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  • 18
    Electronic Resource
    Electronic Resource
    Application of Acoustic Emission in Control of High-Pressure Pipe Overstraining (2006)
    s.l. ; Stafa-Zurich, Switzerland
    Advanced materials research Vol. 13-14 (Feb. 2006), p. 153-158 
    Details
    ISSN: 1662-8985
    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
    Notes: The article describes the application of AE technique in control and evaluation of the pipeoverstraining process. The trials of overstraining were conducted according to a programme of pipeloading with internal pressure, developed and adjusted to the examined pipe material.In the studies two systems of acoustic emission were used, viz. PAC Mistras 2001 and VallenAMSY. The procedure adopted in the development of evaluation criteria based on an analysis of therecorded acoustic events was described. Next, the criteria of evaluation were presented. Theeffectiveness of the applied method, the validity of the adopted criteria, and the consistency of theobtained quantitative results were checked during tests performed by other NDT methods.A comparative analysis was made to serve as a complementary tool in final evaluation of the pipeoverstraining process done by AE technique
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/39/transtech_doi~10.4028%252Fwww.scientific.net%252FAMR.13-14.153.pdf
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  • 19
    Electronic Resource
    Electronic Resource
    Eingrenzung von Lösungen mit Hilfe der Regula falsi (1970)
    Springer
    Computing 6 (1970), S. 318-329 
    Details
    ISSN: 1436-5057
    Source: Springer Online Journal Archives 1860-2000
    Topics: Computer Science
    Description / Table of Contents: Summary We consider Regula-falsimethods applied to systems of equations in order to obtain sequences of upper and lower bounds for the solution of the system. It is shown that the sequences converge monotonously and the speed of convergence is better than linear.
    Notes: Zusammenfassung Es werden Verfahren vom Typ der Regula falsi für Gleichungssysteme betrachtet und mit ihrer Hilfe Folgen von unteren und oberen Schranken für eine Lösung des Systems gewonnen. Es wird gezeigt, daß die Folgen monoton konvergieren und ihre Konvergenzgeschwindigkeit überlinear ist.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02238816
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    Paper (German National Licenses)
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  • 20
    Electronic Resource
    Electronic Resource
    Ableitungsfreie Verfahren mit höherer Konvergenzgeschwindigkeit (1968)
    Springer
    Computing 3 (1968), S. 215-226 
    Details
    ISSN: 1436-5057
    Source: Springer Online Journal Archives 1860-2000
    Topics: Computer Science
    Description / Table of Contents: Summary For equations in spaces of several dimensions classes of methods not involving derivatives are given which require only first-order divided differences. One interation step consists ofk stages each of them meaning the application of the modified regula falsi. The maximum of the efficiency index is shown to shift to greater values ofk with increasing dimension. The convergence of the methods is proved for simple zeros and sufficiently good initial values.
    Notes: Zusammenfassung Für Gleichungen in mehrdimensionalen Räumen werden Klassen von ableitungsfreien Verfahren angegeben, welche in der Durchführung allein Steigungen erster Ordnung benötigen. Ein Iterationsschritt besteht ausk Stufen, wobei die einzelnen Stufen die Anwendung der vereinfachten Regula falsi bedeuten. Es ergibt sich, daß sich das Maximum des Wirkungsgrades mit wachsender Dimension zu den größerenk-Werten hin verschiebt. Die Konvergenz der Verfahren wird für einfache Nullstellen und hinreichend gute Startwerte nachgewiesen.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02277218
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