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  • ATOMIC AND MOLECULAR PHYSICS  (2)
  • correspondence analysis  (1)
  • 1985-1989  (3)
  • 1
    ISSN: 1573-1561
    Schlagwort(e): Lepidoptera ; Noctuidae ; sex attractants ; sex pheromones ; correspondence analysis ; chemotaxonomy ; multidimensional analysis
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie , Chemie und Pharmazie
    Notizen: Abstract Female-emitted pheromones and sex attractants of Noctuidae were investigated using a specific computer procedure to analyze data collected from the literature. Correspondence analysis was used to survey the structure-activity relationships of sex pheromones in seven subfamilies. Structural, stereochemical, and functional features of active molecules were related to taxonomy. This multidimensional analysis revealed that the prevalent chemical frame of noctuid moth pheromones was a monounsaturated acetate withZ stereochemistry and a double bond on the fifth carbon closest to the nonfunctional branch of the molecule. Possible phylogenetic relationships within Noctuidae and between Noctuidae and other families are discussed in light of the sex pheromone biochemistry. Female sex pheromones appeared to be an additional character to be considered in the classification of noctuid moths.
    Materialart: Digitale Medien
    Standort Signatur Erwartet Verfügbarkeit
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  • 2
    facet.materialart.
    Unbekannt
    In:  Other Sources
    Publikationsdatum: 2011-08-19
    Beschreibung: The rototranslational absorption spectrum of N2-H2 gaseous mixtures has been measured at five different temperatures from 298 to 90 K in the frequency range 80-850/cm. The absorption spectra due to N2-H2 interactions have been analyzed considering only the quadrupolar induction mechanism. With this assumption, the experimental data are fairly well accounted for, thereby providing a procedure for predicting the N2-H2 spectrum over a wide temperature range.
    Schlagwort(e): ATOMIC AND MOLECULAR PHYSICS
    Materialart: Journal of Quantitative Spectroscopy and Radiative Transfer (ISSN 0022-4073); 36; 445-452
    Format: text
    Standort Signatur Erwartet Verfügbarkeit
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  • 3
    facet.materialart.
    Unbekannt
    In:  Other Sources
    Publikationsdatum: 2011-08-19
    Beschreibung: The rototranslational absorption spectrum of gaseous N2 is analyzed, considering quadrupolar and hexadecapolar induction mechanisms. The available experimental data are accounted for by using a line-shape analysis in which empirical profiles describe the single-line translational profiles. Thus, a simple procedure is derived that allows the prediction of the N2 spectrum at any temperature. On the basis of the results obtained for the pure gas, a procedure to compute the far-infrared spectrum of the N2-Ar gaseous mixture is also proposed. The good agreement between computed and experimental N2-Ar data indicates that it is possible to predict the far-infrared absorption induced by N2 on the isotropic polarizability of any interacting partner.
    Schlagwort(e): ATOMIC AND MOLECULAR PHYSICS
    Materialart: Canadian Journal of Physics (ISSN 0008-4204); 65; 90-93
    Format: text
    Standort Signatur Erwartet Verfügbarkeit
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