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  • 1975-1979  (16)
  • 1950-1954  (12)
  • 1915-1919  (2)
  • 1
    Electronic Resource
    Electronic Resource
    Stavenhagen, Lee: A Testament of Alchemy. Being the Revelations of Morienus to Khālid ibn Yazīd : Hanover, New Hampshire, University Press of New England, 1974 (1975)
    Cambridge : Cambridge University Press
    The @British journal for the history of science 8 (1975), S. 255-256 
    Details
    ISSN: 0007-0874
    Source: Cambridge Journals Digital Archives
    Topics: History , Natural Sciences in General
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1017/S0007087400014333
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    THE OPTICAL RESEARCHES OF IBN AL-HAITHAM (1953)
    Oxford, UK : Blackwell Publishing Ltd
    Centaurus 3 (1953), S. 0 
    Details
    ISSN: 1600-0498
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine , Natural Sciences in General
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1600-0498.1953.tb00529.x
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Abnormale Energieunschärfe intensiver Elektronenstrahlen aus Plasmakathoden (1976)
    Springer
    Applied physics 10 (1976), S. 269-273 
    Details
    ISSN: 1432-0630
    Keywords: 52
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract Intense electron beams extracted from DUOPLASMATRON-plasma cathodes show a high degree of modulation in intensity and an abnormally large energy spread; these facts cannot be explained simply by the temperature of the plasma electrons and the discharge structure. However, an analysis of the discharge stability behaviour and the interaction of source- and extracted beam-plasma leads to an explanation for the observed effects.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00897227
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    A twin study on three enzymes (DBH, COMT, MAO) of catecholamine metabolism (1978)
    Springer
    Psychopharmacology 57 (1978), S. 63-69 
    Details
    ISSN: 1432-2072
    Keywords: Twins ; Behavior genetics ; DBH ; COMT ; MAO
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract In a sample of 48 healthy adult male twin pairs (24 MZ, 24 DZ) the activities of DBH (serum), COMT (red blood cells), and MAO (platelets) were determined. The twins had undergone a detailed psychodiagnostic test procedure before. Interindividual variability of enzyme activities is almost exclusively genetically determined. No correlation between enzyme activities within one subject is found. Correlations between enzyme activities and MMPI test scores were calculated. As in a comparable investigation by Murphy et al. (1977), negative correlations between MAO activity and MMPI scores prevailed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00426959
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    Paper (German National Licenses)
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  • 5
    Electronic Resource
    Electronic Resource
    The superconducting transition temperatures of the thorium-hydrides (1976)
    Springer
    The European physical journal 24 (1976), S. 279-284 
    Details
    ISSN: 1434-6036
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The contributions to the quantityα 2 F(ω) coming from the different vibration modes are calculated for the compounds Th4H15 and Th H2. The electronic quantities have been evaluated in a cluster approximation while simple models are used for the phonons. The high transition temperature of Th4H15 is explained by the large contribution of the hydrogen modes to the McMillanλ, which overcompensates the “deterioration” of the Th-lattice in comparison to the Th-metal. In Th H2 the hydrogen contribution turns out to be insufficient for a highT c . An important property of these substances is the significant admixture off-states at the Fermi level.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01360898
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    Paper (German National Licenses)
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  • 6
    Electronic Resource
    Electronic Resource
    Calculations and measurements to a phase-free accelerating stage using electric ac-fields in a triangular shaped electrode system (1975)
    Springer
    The European physical journal 273 (1975), S. 167-175 
    Details
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract A phase-free accelerating stage for charged particles has been constructed which makes use of electric ac-fields in a triangular shaped electrode system combined with ac-deflecting devices in the MHz-range. An elaborate calculation of the energy gain based on a time dependent Hamiltonian and a simplified calculation assuming perfect shielding within the electrodes were performed. The theoretical results are compared with measurements at a frequency of 13.55 MHz and at peak electrode voltages of 3 kV and 0.5 kV. The maximum energy gain of electrons with an incident energy of 20 keV was measured to be 140 eV at the 3 kV peak voltage. Construction and properties of the retarding-field energy analyzer and of the resonant circuits are given. It is shown that rf-driven magnetic deflecting coils diminish the energy gain due to induced electric fields. Rf-electric capacitor fields seem to be superior to the rf-magnetic fields because they reduce the energy gain very little and furthermore offer a simultaneous phase-free particle acceleration in opposite directions. The possible applications of such a phase-free accelerating stage for heating up a plasma and for producing an intense ring of relativistic electrons are discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01435836
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    Paper (German National Licenses)
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  • 7
    Electronic Resource
    Electronic Resource
    Alignment ofH(2P) after beam-foil excitation (1976)
    Springer
    The European physical journal 277 (1976), S. 27-30 
    Details
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The alignment of foil-excited hydrogen was determined by measuring the polarization of Ly-α radiation in the particle energy region 23≦E≦190 keV. A change of sign at 45 keV is observed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01547497
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    Paper (German National Licenses)
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  • 8
    Electronic Resource
    Electronic Resource
    Beiträge zur Bioehemie der Käsereifung (1954)
    Springer
    European food research and technology 98 (1954), S. 258-274 
    Details
    ISSN: 1438-2385
    Source: Springer Online Journal Archives 1860-2000
    Topics: Process Engineering, Biotechnology, Nutrition Technology
    Notes: Zusammenfassung In Sauermilchkäse (Harzer Käse) verschiedener Herstellungsart und wechselnden Reifungsgrades wurde der Gehalt zahlreicher Stickstofffraktionen untersucht. Die Zusammenfassung verschiedener Fraktionen unter den Begriffen des wasserlöslichen Nichteiweiß- bzw. Eiweiß-Stickstoffs sowie des wasserunlöslichen Eiweiß-Stickstoffs und die Aufteilung des „Rest”-Stickstoffes wurden insbesondere benutzt, Einblicke in den Eiweißabbau reifender Käseproben zu gewinnen. Es gelang, Unterschiede im Reifungsverlauf der Käsemasse herauszuarbeiten, wie er bei normalen, überdosierten und fehlenden Reifungssalzzusätzen vor sich geht. Bei der Schnellreifung nimmt die für die Bekömmlichkeit erwünschte Menge des löslichen Eiweißanteiles mit zunehmender Reifung ab und nicht zu. Eine derartige Prozedur bietet nährwertmäßig und qualitativ keine Vorteile.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02425533
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  • 9
    Electronic Resource
    Electronic Resource
    Beiträge zur Biochemie der Käsereifung (1954)
    Springer
    European food research and technology 98 (1954), S. 347-358 
    Details
    ISSN: 1438-2385
    Source: Springer Online Journal Archives 1860-2000
    Topics: Process Engineering, Biotechnology, Nutrition Technology
    Notes: Zusammenfassung In Reifungsansätzen von Sauermilchkäse (Harzer Käse) wurde für Proben, die mit normalen Richtsalzzusätzen, mit übergroßen Salzgaben und ohne jeglichen Salzzusatz hergestellt waren, die Argininbilanz verschiedener Stickstofffraktionen der Gesamtkäse-Stickstoffsubstanz ermittelt. Es ergab sich, daß bei normaler Käsebereitung geringe Argininverluste auftreten, daß außerdem freies Arginin nicht oder nur spurenweise im Käse zu finden ist. Daraus wird gefolgert, daß Sauermilch-Käse normaler Herstellung keine Minderung der biologischen Wertigkeit hinsichtlich des Arginins erfahren und Arginin nicht an der Geschmacksausbildung solcher Käse beteiligt ist. Auch für Käse, der im Schnellreifungsverfahren gewonnen wurde, gelten diese Gesichtspunkte. Reifung von Quark ohne jeden Salzzusatz liefert grundsätzlich andere Ergebnisse; derartige, mehr oder minder genußuntaugliche Produkte sind durch hohen Gehalt an freiem Arginin gekennzeichnet, der an der Ausbildung unerwünschter, widerlicher Geschmacksnuancen mitbeteiligt ist.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01882934
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  • 10
    Electronic Resource
    Electronic Resource
    Beiträge zur Biochemie der Käsereifung IV. Mitteilung. Das Verhalten des Tyrosins im Verlauf der Reifung (1954)
    Springer
    European food research and technology 98 (1954), S. 411-424 
    Details
    ISSN: 1438-2385
    Source: Springer Online Journal Archives 1860-2000
    Topics: Process Engineering, Biotechnology, Nutrition Technology
    Notes: Zusammenfassung In einer Reihe von Chargen von Harzer Käse wechselnder Reifungsbedingungen wurde nach zwei getrennten Methoden der Tyrosingehalt für verschiedene Stickstofffraktionen bestimmt und zu dem Stickstoffgehalt dieser Fraktionen in Beziehung gesetzt. Bei normaler Reifung tritt kein freies Tyrosin auf; die Aminosäure reichert sich vielmehr deutlich im Reinprotein und z. T. im wasserlöslichen Eiweiß an. Bei übermäßig langer Reifung, insbesondere aber bei Quarkverarbeitung ohne Salzzusatz treten beträchtliche Mengen an freiem Tyrosin auf. An Hand raumgraphischer Darstellungen konnte gezeigt werden, daß in der wasserlöslichen und wasserunlöslichen Eiweißfraktion sowie in der wasserlöslichen Nichteiweißfraktion die Aminosäureverteilung weitgehend der Stickstoffbilanz entspricht.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02431581
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    Paper (German National Licenses)
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