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  • 1
    Electronic Resource
    Electronic Resource
    A further study of LDH isozymes in theRana esculenta complex (1977)
    Springer
    Cellular and molecular life sciences 33 (1977), S. 1285-1287 
    Details
    ISSN: 1420-9071
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary Electrophoretic analyses of LDH isozymes in the 3 types of European green frogs by using the buffer system of Williams and Reisfeld demonstrated the occurrence of 4 allelic genes coding for the B subunits. Based on the distribution of these alleles and results from dissociation and recombination of the subunits, the hybrid nature of Rana esculenta is confirmed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01920136
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  • 2
    Electronic Resource
    Electronic Resource
    Genetic control of LDH isozymes in theRana esculenta complex (1976)
    Springer
    Cellular and molecular life sciences 32 (1976), S. 304-307 
    Details
    ISSN: 1420-9071
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary Studies of LDH isozymes in the European green frogs showed that the synthesis of the B subunits is controlled by 3 alleles at a single genetic locus. The genetic evidence supports the hypothesis thatRana esculenta is the hybrid ofR. lessonae x R. ridibunda.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01940805
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  • 3
    Electronic Resource
    Electronic Resource
    Influence of trace elements and nitrogen sources on versicolorin production by a mutant strain of Aspergillus parasiticus (1979)
    Springer
    Mycopathologia 69 (1979), S. 161-166 
    Details
    ISSN: 1573-0832
    Keywords: Aspergillus parasiticus ; Furobenzofuran ; Versicolorin A ; Versicolorin C
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract A mutant strain of Aspergillus parasiticus blocked in aflatoxin biosynthesis accumulates versicolorin A and versicolorin C. The effect of trace elements on the growth and versicolorin production by this strain was studied in a defined medium. The omission of manganese was slightly stimulatory to versicolorin production; when zinc was omitted from the medium, no detectable versicolorins were produced. Experiments on nitrogen sources in a highsucrose medium indicated that fourfold to fivefold increases in versicolorin yields could be obtained by substituting 3 ml/l corn steep liquor or 0.1 M NH4NO3 for the 0.023 M (NH4)2SO3 used previously as the nitrogen source in studies on versicolorin production by this strain. These improved yields will facilitate attempts to accumulate enough versicolorin A and versicolorin C for toxicity and carcinogenicity testing. Chromatographic profiles of mycelial extracts of cultures grown in a defined medium with 0.1 M NH4NO3 as the nitrogen source revealed 2 previously unrecognized compounds. The accumulation of these new metabolites in a mutant blocked in aflatoxin production may indicate that they are biosynthetically related to aflatoxin.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00452829
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  • 4
    Electronic Resource
    Electronic Resource
    Species-specific protein patterns inDrosophila paragonial glands (1976)
    Springer
    Cellular and molecular life sciences 32 (1976), S. 549-551 
    Details
    ISSN: 1420-9071
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary Electrophoretic analysis of the soluble proteins in the paragonial glands of 11Drosophila species demonstrated that the patterns are highly species-specific. The possible functional significance of these proteins is discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01990153
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  • 5
    Electronic Resource
    Electronic Resource
    Efficient methods for isolation of X-linked male sterile mutations in Drosophila melanogaster (1977)
    Springer
    Cellular and molecular life sciences 33 (1977), S. 729-730 
    Details
    ISSN: 1420-9071
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary Three different mating systems based on the production of virgin females in F1 and the elimination of undesired males in F2 are proposed for an efficient isolation of X-linked male sterile mutations in Drosophila melanogaster.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01944154
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  • 6
    Electronic Resource
    Electronic Resource
    Linear theory of heat conduction in chemically reacting media (1975)
    Springer
    Acta mechanica 22 (1975), S. 267-280 
    Details
    ISSN: 1619-6937
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Description / Table of Contents: Zusammenfassung In dieser Arbeit wird ein System linearer Gleichungen zur Ermittlung des Temperaturfeldes in einem chemisch reagierenden Medium hergeleitet. Nach Nachweis der Eindeutigkeit der Lösungen dieses Systems werden zwei Spezialfälle betrachtet: der Fall einer Reaktion und der Fall der Reaktionskinetik nullter Ordnung.
    Notes: Summary In this paper we derive a system of linear equations which serve to determine the temperature field in a chemically reacting medium. After establishing the uniqueness of solutions for this system, we consider two special cases; one corresponding to a single reaction, the other corresponding to zeroth-order kinetics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01170680
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  • 7
    Electronic Resource
    Electronic Resource
    Unsteady flow of incompressible fluids in deformable tubes (1979)
    Springer
    Acta mechanica 33 (1979), S. 189-197 
    Details
    ISSN: 1619-6937
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Description / Table of Contents: Zusammenfassung Die instationäre, axialsymmetrische Strömung einer inkompressiblen Flüssigkeit in einem deformierbaren Rohr wird betrachetet unter Berücksichtigung von Verlusten und Wandreibung. Im besonderen werden die allgemeinen Bedingungen betrachtet, wobei sich eine Diskontinuität in der Geschwindigkeit des Flüssigkeitsdruckes in eine Druckdiskontinuität entwickelt. Dies kann als abrupter Schub der Rohrwand interpretiert werden und schädlich sein. Das Problem ist auch für die einfachste Situation eines linear elastischen Rohres bei infinitesimalen Deformationen nichtlinear. Das Problem der anfangs stationären Strömung in einem Kreisrohr mit axial veränderlichem Querschnitt wird ebenfalls betrachtet.
    Notes: Summary We investigate the unsteady axially symmetric flow of an incompressible fluid in a deformable tube including the effects of leakage and wall friction. In particular, we consider the general conditions whereby a discontinuity in the fluid pressure rate may develop into a pressure discontinuity, a situation which may be interpreted as an abrupt shear of the tube wall and which could be damaging. The problem is inherently non-linear even for the simplest situation of a linearly elastic tube undergoing infinitesimal deformation. The problem of initial steady flow in a circular tube with axially varying cross section is also considered.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01175915
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  • 8
    Electronic Resource
    Electronic Resource
    Determination of the mechanical properties of PZT 65/35 using acoustic techniques (1978)
    Springer
    Acta mechanica 30 (1978), S. 293-298 
    Details
    ISSN: 1619-6937
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01175909
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  • 9
    Electronic Resource
    Electronic Resource
    The behavior of plane shock waves in deformable magnetic materials (1975)
    Springer
    Acta mechanica 23 (1975), S. 91-102 
    Details
    ISSN: 1619-6937
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Description / Table of Contents: Zusammenfassung Betrachtet wird das Verhalten ebener Stoßwellen in deformierbaren Magneten. Die das Verhalten der Stoßwellen beschreibenden Differentialgleichungen werden hergeleitet und explizite Formeln für die Änderung der Magnetisierung an der Stoßfront angegeben. Die aus diesen Resultaten sich ergebenden Folgerungen werden im Detail untersucht.
    Notes: Summary In this paper, we consider the behavior of plane shock waves in deformable magnets. In addition to deriving the differential equation which governs the behavior of the shocks, we also give explicit formulae for the changes in magnetization across the shocks. The implications of these results are examined in detail.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01177671
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  • 10
    Electronic Resource
    Electronic Resource
    Some properties of curved shock waves in ideal fluid mixtures with multiple temperatures (1979)
    Springer
    Acta mechanica 33 (1979), S. 265-280 
    Details
    ISSN: 1619-6937
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Description / Table of Contents: Zusammenfassung Die Theorie der singulären Flächen wird verwendet zur Betrachtung der Eigenschaften gekrümmter Stoßwellen, die sich in einer Mischung ausbreiten, wobei kombinierte Effekte von Diffusion und verschiedenen Temperaturen auftreten. Es wird gezeigt, wie Diffusion vor dem Stoß einen Spinsprung über dem Stoß, für ebene Stöße, verursacht. Die Analysis enthält Gleichungen, die die evolutionären Eigenschaften der Stoßstärke bestimmen. Diese Gleichungen zeigen, wie die Krümmung, die Bewegung vor dem Stoß, Diffusion und Energieversorgung die Stoßstärke beeinflussen.
    Notes: Summary The theory of singular surfaces is used to investigate the properties of curved shock waves propagating in a mixture where the combined effects of diffusion and multiple temperatures are present. We show how diffusion in front of the shock will cause, even for plane shocks, a spin jump across the shock. Our analysis contains formulas which govern the evolutionary properties of the shock strength. These formulas show how the curvature, motion in front of the shock, diffusion and energy supplies influence the shock strength.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01202108
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