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  • Articles  (9)
  • Articles: DFG German National Licenses  (9)
  • Springer  (9)
  • 1910-1914  (9)
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  • Articles  (9)
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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Monatshefte für Mathematik 25 (1914), S. A14 
    ISSN: 1436-5081
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Monatshefte für Mathematik 25 (1914), S. A13 
    ISSN: 1436-5081
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Monatshefte für Mathematik 25 (1914), S. A14 
    ISSN: 1436-5081
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    Monatshefte für Mathematik 25 (1914), S. A15 
    ISSN: 1436-5081
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Springer
    Monatshefte für Mathematik 25 (1914), S. A14 
    ISSN: 1436-5081
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Springer
    Monatshefte für Mathematik 25 (1914), S. A15 
    ISSN: 1436-5081
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    Springer
    De economist 60 (1911), S. 249-288 
    ISSN: 1572-9982
    Source: Springer Online Journal Archives 1860-2000
    Topics: Economics
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    Springer
    De economist 60 (1911), S. 637-677 
    ISSN: 1572-9982
    Source: Springer Online Journal Archives 1860-2000
    Topics: Economics
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    Springer
    Development genes and evolution 29 (1910), S. 275-286 
    ISSN: 1432-041X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Description / Table of Contents: Zusammenfassung Die imaginalen Flügelscheiben nehmen bei Schmetterlingen (Pieris rapae) ihren Ursprung ans einer Verdickung der pleuralen Thoraxhypodermis am Schlusse des Embryonallebens. Die Tracheolen nehmen ihren Ursprung in der endotrachealen Schicht am Schlusse der ersten Häutung und beginnen am Schlusse der zweiten zu funktionieren. Sie wachsen sehr rasch und erreichen die Grenze ihres Eindringens in den Larvenflügel am Ende der dritten Häutung. Am Beginne der fünften werden sie dagegen weniger reichlich, degenerieren und verschwinden durch Absorption im Flügel der Puppe. Das bleibende Tracheolensystem stülpt sich aus der Flügeltrachea im Vorpuppenstadium aus und tritt während des Puppenlebens in Funktion. Der Flügel gelangt durch ein Zurückziehen des hypodermalen Flügelsackes an die Außenwelt. Die rapide Ausdehnung des Flügels veranlaßt das Zurückweichen der Hypodermis. Die scharfe Teilung in Larven- und Puppenstadium findet ihre Anwendung mehr auf das Körperäußere, da das eine auf das andre nach successiven Häutungen folgt. Die innere Entwicklung ist eine kontinuierliche Reihe von Formveränderungen, zwischen denen keine scharfe Trennungslinie existiert. Im ganzen aber bleiben die Larven-, Puppen- und Imagoform je nach Anpassung an ihre verschiedene Umgebung und ihre verschiedenen Lebensgewohnheiten streng getrennt.
    Notes: Summary In Lepidoptera (Pieris rapae) the imaginal wing discs originate by a thickening of the thoracic pleural hypodermis at the close of embryonic life. The tracheoles originate in the endotracheal layer at the close of the first moult and become functional at the close of second moult. They grow very rapidly and reach their limit of penetration in the larval wing at end of third moult. At the beginning of fifth instar they become less abundant degenerate and disappear by absorption in the pupal wing. The permanent system of tracheoles evaginate from the wing trachea in the prepupal stage and become functional during pupal life. The wing passes to the exterior by a drawing back of the hypodermal wing sac. The rapid expansion of the wing causes the withdrawal of hypodermis. The sharp division into larval and pupal stages applies more particularly to the exterior of the body as they follow one another after successive moults, the internal development is a continuous series of transformations, between which there is no sharp line of demarcation. Yet on the whole the form of larva, pupa and imago are kept distinct in adaptation to their separate environments and habits.
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