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  • 1995-1999  (2)
  • 1998  (2)
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Erscheinungszeitraum
  • 1995-1999  (2)
Jahr
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  • 1
    Digitale Medien
    Digitale Medien
    Status and Results from the HEGRA Air Shower Experiment (1998)
    Springer
    Astrophysics and space science 263 (1998), S. 377-380 
    Details
    ISSN: 1572-946X
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Physik
    Notizen: Abstract The HEGRA experiment investigates the relativistic (non thermal) universe by measuring air showers initiated in the atmosphere by photons and charged particles from the cosmos, using the imaging atmospheric Cherenkov light technique (〉 500 GeV) and the showerfront sampling technique (〉 20 TeV). New results concerning the search and study of gamma ray sources above 500 GeV, the measurement of the energy spectrum and chemical composition of cosmic rays above 1 PeV and the search of TeV counterparts of Gamma Ray Bursts are briefly described.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1023/A:1002101216613
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 2
    Digitale Medien
    Digitale Medien
    A case of multiple mating in stingless bees (Meliponinae) (1998)
    Springer
    Insectes sociaux 45 (1998), S. 231-233 
    Details
    ISSN: 1420-9098
    Schlagwort(e): Key words: Multiple mating, stingless bees, Tetragonisca angustula, Meliponinae.
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie
    Notizen: Summary: In several stingless bee species many males aggregate in the vicinity of a nest when a virgin queen is present in the colony and is preparing for the nuptial flight. We report such male assemblage for Tetragonisca angustula. The departure of a virgin queen from the colony and the subsequent mating could be video-recorded, because the queen and the males that had mounted her fell to the ground. Since at least two males had lost their genitalia, multiple mating seems to have occurred. This is in contrast with the prevailing view found in literature concerning the mating biology of stingless bees.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/s000400050083
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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    Artikel (Nationallizenzen)
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