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  • 1
    Electronic Resource
    Electronic Resource
    Significance of ‘Fungus Gardens’ in Termite Nests (1951)
    [s.l.] : Nature Publishing Group
    Nature 167 (1951), S. 34-35 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Role of the fungi as food. Although the conidia are undoubtedly eaten (see above), it appears that workers have never been observed in the act of consuming them. The shape of the typical spherical conidia (cauliflowers) was formerly supposed to be dependent upon the termite activity, but it is now ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/167034a0
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  • 2
    Electronic Resource
    Electronic Resource
    Zur Frage der Auslösung der Metamorphose bei Insekten (1956)
    Springer
    Naturwissenschaften 43 (1956), S. 43-44 
    Details
    ISSN: 1432-1904
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology , Natural Sciences in General
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00637545
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  • 3
    Electronic Resource
    Electronic Resource
    Hemmung der Eireifung durch Prothoraxdrüsen bei Leucophaea maderae (Orthoptera) (1957)
    Springer
    Naturwissenschaften 44 (1957), S. 455-455 
    Details
    ISSN: 1432-1904
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology , Natural Sciences in General
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00629302
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  • 4
    Electronic Resource
    Electronic Resource
    A Method for Observing Growing Epithelial Tissue in Rhodnius prolixus (Hemiptera) (1947)
    [s.l.] : Nature Publishing Group
    Nature 160 (1947), S. 873-874 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] ALTHOUGH it has been accomplished in the case of the hæmatocytes and imaginal disks of Drosophila1, the cultivation of insect tissue in vitro has proved to be very difficult. A method by which growing epithelial tissue can be observed in transmitted light, while still in ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/160873b0
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  • 5
    Electronic Resource
    Electronic Resource
    ‘Pheromones’: a New Term for a Class of Biologically Active Substances (1959)
    [s.l.] : Nature Publishing Group
    Nature 183 (1959), S. 55-56 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Referring to Starling's original definition, Bethe1 called such substances 'ectohormones'; the name has been used by some authors but rejected by others. The most common definition of hormones to-day is that they are the products of endocrine glands. This should not be lightly expanded and diluted; ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/183055a0
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  • 6
    Electronic Resource
    Electronic Resource
    An unusual caste polymorphism of the sternal gland and its trail pheromone production in the termiteTrinervitermes bettonianus (1974)
    Springer
    Insectes sociaux 21 (1974), S. 335-341 
    Details
    ISSN: 1420-9098
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Description / Table of Contents: Zusammenfassung Die Sternaldrüsen der verschiedenen Kasten vonT. bettonianus varieren sehr stark in ihrer Grösse und Spurbildungsfähigkeit. Bei Soldaten ist die Drüse nahezu rudimentär und ohne nachweisbare Funktion. Bei Arbeitern ist sie im Vergleich zu anderen Arten normal inbezug auf Grösse und extrahierbarer Pheromonaktivität. Das Pheromon wird zur Anlegung von Dutspuren benützt. Bei den Imagines ist die Drüse aussergewöhnlich gross und enthält 70–1200 mal mehr Spur-Pheromon als diejenige der Arbeiter. Das Spur-Pheromon oder andere von der Sternaldrüse produzierten Pheromone haben eine funktionelle Bedeutung im Paarungsverhalten.
    Notes: Summary The sternal glands of the various castes inT. bettonianus differ drastically in size and potential trail-laying activity. In soldiers they are almost vestigial and without evident function. In workers they are normal in size compared with those of other termite species, and their secretion is employed for communicative trails. In the imagines, however, they are extremely large and contain enormous quantities of trail pheromone. This or other pheromones secreted by the sternal gland are functionally involved in courtship behaviour.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02331563
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  • 7
    Electronic Resource
    Electronic Resource
    Correspondance (1954)
    Springer
    Insectes sociaux 1 (1954), S. 81-82 
    Details
    ISSN: 1420-9098
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02223155
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  • 8
    Electronic Resource
    Electronic Resource
    Volume dependence of the energy spectrum in massive quantum field theories (1986)
    Springer
    Communications in mathematical physics 104 (1986), S. 177-206 
    Details
    ISSN: 1432-0916
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics , Physics
    Notes: Abstract Due to polarization effects, the massM of a stable particle in a quantum field theory enclosed in a large (space-like) box of sizeL and periodic boundary conditions in general differs from its infinite volume valuem. AsL increases, the finite size mass shift Δm =M−m goes to zero exponentially with a rate, which depends on the particle considered and on the spectrum of light particles in the theory. This behaviour follows from an apparently universal asymptotic formula, already presented earlier, which relates Δm to certain forward elastic scattering amplitudes. A detailed proof of this basic relation is given here to all orders of perturbation theory in arbitrary massive quantum field theories.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01211589
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  • 9
    Electronic Resource
    Electronic Resource
    Volume dependence of the energy spectrum in massive quantum field theories (1986)
    Springer
    Communications in mathematical physics 105 (1986), S. 153-188 
    Details
    ISSN: 1432-0916
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics , Physics
    Notes: Abstract The low-lying energy values associated to energy eigenstates describing two stable particles enclosed in a (space-like) box of sizeL are shown to be expandable in an asymptotic power series of 1/L. The coefficients in these expansions are related to the appropriate elastic scattering amplitude in a simple and apparently universal manner. At low energies, the scattering amplitude can thus be determined, if an accurate calculation of two-particle energy values is possible (by numerical simulation, for example).
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01211097
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  • 10
    Electronic Resource
    Electronic Resource
    Topology of lattice gauge fields (1982)
    Springer
    Communications in mathematical physics 85 (1982), S. 39-48 
    Details
    ISSN: 1432-0916
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics , Physics
    Notes: Abstract Non-Abelian gauge fields on a four-dimensional hypercubic lattice with small action density [Tr{U( $$\dot p$$ )} for SU(2) gauge fields] are shown to carry an integer topological chargeQ, which is invariant under continuous deformations of the field. A concrete expression forQ is given and it is verified thatQ reduces to the familiar Chern number in the classical continuum limit.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02029132
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