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  • 1
    Electronic Resource
    Electronic Resource
    Genetic localization of four genes for nematode (Heterodera schachtii Schm.) resistance in sugar beet (Beta vulgaris L.) (1996)
    Springer
    Theoretical and applied genetics 92 (1996), S. 991-997 
    Details
    ISSN: 1432-2242
    Keywords: Key words Sugar beet ; Beta vulgaris ; Nematode resistance ; RFLP ; Genetic maps ; Bulk segregant analysis
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract  Sugar beet (Beta vulgaris L.) is highly susceptible to the beet cyst nematode (Heterodera schachtii Schm.). Three resistance genes originating from the wild beets B. procumbens and B. webbiana have been transferred to sugar beet via species hybridization. We describe the genetic localization of the nematode resistance genes in four different sugar beet lines using segregating populations and RFLP markers from our current sugar beet linkage map. The mapping studies yielded a surprising result. Although the four parental lines carrying the wild beet translocations were not related to each other, the four genes mapped to the same locus in sugar beet independent of the original translocation event. Close linkage (0–4.6 cM) was found with marker loci at one end of linkage group IV. In two populations, RFLP loci showed segregation distortion due to gametic selection. For the first time, the non-randomness of the translocation process promoting gene transfer from the wild beet to the sugar beet is demonstrated. The data suggest that the resistance genes were incorporated into the sugar beet chromosomes by non-allelic homologous recombination. The finding that the different resistance genes are allelic will have major implications on future attempts to breed sugar beet combining the different resistance genes.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s001220050220
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Genetic localization of four genes for nematode (Heterodera schachtii Schm.) resistance in sugar beet (Beta vulgaris L.) (1996)
    Springer
    Theoretical and applied genetics 92 (1996), S. 991-997 
    Details
    ISSN: 1432-2242
    Keywords: Sugar beet ; Beta vulgaris ; Nematode resistance ; RFLP ; Genetic maps ; Bulk segregant analysis
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Sugar beet (Beta vulgaris L.) is highly susceptible to the beet cyst nematode (Heterodera schachtii Schm.). Three resistance genes originating from the wild beets B. procumbens (Hs1 pro-1) and B. webbiana (Hs1 web-1, Hs2 web-7) have been transferred to sugar beet via species hybridization. We describe the genetic localization of the nematode resistance genes in four different sugar beet lines using segregating F2 populations and RFLP markers from our current sugar beet linkage map. The mapping studies yielded a surprising result. Although the four parental lines carrying the wild beet translocations were not related to each other, the four genes mapped to the same locus in sugar beet independent of the original translocation event. Close linkage (0–4.6 cM) was found with marker loci at one end of linkage group IV. In two populations, RFLP loci showed segregation distortion due to gametic selection. For the first time, the non-randomness of the translocation process promoting gene transfer from the wild beet to the sugar beet is demonstrated. The data suggest that the resistance genes were incorporated into the sugar beet chromosomes by non-allelic homologous recombination. The finding that the different resistance genes are allelic will have major implications on future attempts to breed sugar beet combining the different resistance genes.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00224039
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Environmental effects on fiber-reinforced composites (1975)
    Stamford, Conn. [u.a.] : Wiley-Blackwell
    Polymer Engineering and Science 15 (1975), S. 781-788 
    Details
    ISSN: 0032-3888
    Keywords: Chemistry ; Chemical Engineering
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: The use of fiber-reinforced composites in structures is discussed with emphasis on the need for a method to obtain long time properties from short time tests. Results of vibration, constant strain-rate and creep tests are presented for boron epoxy laminates. The data is statistically conditioned and a time-temperature shifting procedure is used to obtain master curves for response at an individual temperature. Three analytical linear viscoelastic characterization techniques are used to obtain long term creep response from dynamic data. Comparisons between analytical predictions are given for vibration and constant strain-rate data. Creep predictions are also compared to experimental observations.
    Additional Material: 15 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pen.760151104
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Massenspektrometrische Untersuchungen an Benzophenon und Substituierten Benzophenonen. I-Ermittlung Thermodynamischer Grössen (1974)
    Chichester : Wiley-Blackwell
    Biological Mass Spectrometry 9 (1974), S. 998-1005 
    Details
    ISSN: 0030-493X
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Ionisation potentials of benzophenone and nine substituted benzophenones, and appearance potentials of the most abundant fragment ions have been determined. Starting from calculated heats of formation of the substituted benzophenones, the following quantities have been evaluated; heats of formation of the molecular ions; heats of formation of fragment ions formed via a one-step pathway and via a two-step pathway; heats of formation and ionisation potentials of radicals; heats of dissociation of benzophenone and substituted benzophenones. The accuracy of the result is discussed.
    Notes: Es wurden die Ionisieerungspotentiate von Benzophenon und substituierten Benzophenonen sowie die Auftrittspotentiale der häufigsten Fragment-Ionen gemessen. Ausgehend von berechneten Werten für die Bildungsenthalpien der substituierten Benzophenone, wurden folgende Grüßen ermittelt: Bildungsenthalpien der Molekül-Ionen; Bildungsenthalpien von Fragment-Ionen, die in einem einstufigen, und solcher, die in einem zweistufigen Zerfallsprozeß gebildet wurden; Bildungsenthalpien und Ionisierungspotentiale von Radikalen; Dissoziationsenergien des Benzophenons und der substituierten Benzophenone. Die Genauigkeit der Ergebnisse wird diskutiert.
    Additional Material: 8 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/oms.1210091006
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    Paper (German National Licenses)
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  • 5
    Electronic Resource
    Electronic Resource
    Massenspektrometrische Untersuchungen an Benzophenon und Substituierten Benzophenonen. II - Berechnung von Ionenhäufigkeiten (1974)
    Chichester : Wiley-Blackwell
    Biological Mass Spectrometry 9 (1974), S. 1134-1147 
    Details
    ISSN: 0030-493X
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Clastograms of benzophenone and nine substituted benzophenones have been calculated in the range of 12 to 24 eV, using the simplest equation of the quasi-equilibrium theory. The calculations consider competing and consecutive reactions. The energy distribution function used by Yeo and Williams has been slightly modified with regard to the measured clastogram of benzophenone. Good agreement is obtained between calculated and measured clastograms. The calculations confirm the presumption of preliminary work, that benzoyl and aminobenzoyl ions from aminobenzophenones are formed with considerable excess energy at the threshold.
    Notes: Mit Hilfe der einfachsten Gleichung der Quasi-Gleichgewichts-Theorie wurden die Klastogramme von Benzophenon und neun substituierten Benzophenonen im Bereich von 12 bis 24 eV berechnet. Es wurden Konkurrierende Reaktionen und Folgereaktionen berücksichtigt. Die Energieverteilungsfunktion von Yeo und William wurde auf Grund der Ergebnisse, die für Benzophenon erhalten wurden, modifiziert. Berechnete und gemessene Klastogramme stimmen gut überein. Die Berechnungen bestätigen die aus anderen Arbeiten gewonnene Vermutung, daß Benzoylund Aminobenzoyl-Ionen aus Aminobenzophenonen an der Bildungsschwelle mit einer beträchtlichen Überschußenergie behaftet sind.
    Additional Material: 6 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/oms.1210091109
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    Paper (German National Licenses)
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