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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    The European physical journal 36 (2003), S. 301-312 
    ISSN: 1434-6036
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract. We study the superconducting state of Sr2RuO4 on the bases of a phenomenological but orbital specific description of the electron-electron attraction and a realistic quantitative account of the electronic structure in the normal state. We found that a simple model which features both ‘in plane’ and ‘out of plane’ coupling with strengths $U_{\parallel} = 40$ meV and $U_{\perp} = 48$ meV respectively reproduced the experimentally observed power law behaviour of the low temperature specific heat C v (T), superfluid density n s (T) and thermal conductivity in quantitative detail. Moreover, it predicts that the quasi-particle spectrum on the $\gamma$ -sheet is fully gaped and the corresponding order parameter breaks the time reversal symmetry. We have also investigated the stability of this model to inclusion of further interaction constants in particular ‘proximity coupling’ between orbitals contributing to the $\gamma$ sheet of the Fermi surface and the $\alpha$ and $\beta$ sheets. We found that the predictions of the model are robust under such changes. Finally, we have incorporated a description of weak disorder into the model and explored some of its consequences. For example we demonstrated that the disorder has a more significant effect on the f-wave component of the order parameter than on the p-wave one.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1432-1904
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology , Natural Sciences in General
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Naturwissenschaften 26 (1938), S. 547-547 
    ISSN: 1432-1904
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology , Natural Sciences in General
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    Theoretical and applied genetics 12 (1940), S. 202-208 
    ISSN: 1432-2242
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Springer
    Theoretical and applied genetics 37 (1967), S. 46-51 
    ISSN: 1432-2242
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Description / Table of Contents: Zusammenfassung Bei Lycopersicon peruvianum, L. pimpinellifolium, L. esculentum var. cerasiforme (2 Linien), L. esculentum var. piriforme (3 Linien) und bei den Sorten ‘Resista’, ‘Aranyalma’, ‘Bonner Beste’, ‘Mikado’, ‘Bounty’ und ‘San Marzano’ wurden mit der Colchicinmethode autotetraploide Formen hergestellt und die Wirkung der Genomverdoppelung untersucht. Die Breite der Keimblätter nimmt bei jeder Linie nach der Tetraploidisierung zu. Die Länge der Keimblätter nimmt bei den meisten Linien ebenfalls zu; bei den Linien mit den längsten Keimblättern nimmt sie jedoch ab. Die relative Zunahme der Breite ist aber in allen Fällen so groß, daß der Breite/Länge-Index bei allen 4 x-Linien eine Vergrößerung zeigt. Die Fruchtform nähert sich immer der Kugelform, der Breite/Länge-Index nimmt bei den länglichen Früchten zu und vermindert sich bei den abgeplatteten Formen, ohne in beiden Fällen den Wert 1,00 zu überschreiten. Übereinstimmend mit den Angaben in der Literatur wird die Pollengröße und das Samengewicht erhöht; vermindert wird die Pollenvitalität (erhöhte Zahl von tauben Pollenkörern), das Gewicht der Frucht und die relative Fertilität (Samenzahl/Frucht).
    Notes: Summary In experiments over some years observations were made on autotetraploid tomato lines involving Lycopersicon peruvianum, L. pimpinellifolium, five varieties of L. esculentum var. cerasiforme and var. piriforme, and six cultivated varieties, Resista, Aranyalma (Golden Apple), Bonny Best, Mikado, Bounty and San Marzano. The tetraploids of the self-incompatible L. peruvianum were not isogenic with the corresponding diploids and behaved inconsistently with the general trend of the autotetraploid lines in some instances. The effect of tetraploidy on the cotyledons was to increase their width in all cases, their length in lines with relatively small cotyledons, but to reduce their length in lines with larger cotyledons. In agreement with the general features of the autotetraploids, however, the organs are wider and thicker than those of normal diploid plants. The width to length ratio was in all cases considerably higher in autotetraploid tomatoes than in diploids. The fruit shape tended to be globular in all autotetraploid lines, their width-length index was higher than that of the diploid varieties with slightly elongated spherical or with elongated fruit and was lower than that of the corresponding diploids with flattened or oblate fruit. In neither case of the contrasting trends did it pass the value 1.00. Tetraploidy was associated with increased pollen size and seed weight, and with reduced pollen viability (i.e. percentage of the stainable pollen grains), fruit weight and relative fertility (i.e. number of seeds per fruit); this agrees with data from publications on tomatoes.
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Springer
    Theoretical and applied genetics 12 (1940), S. 139-149 
    ISSN: 1432-2242
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Type of Medium: Electronic Resource
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