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  • 1980-1984
  • 1975-1979  (3)
  • 1945-1949
  • 1880-1889
  • 1979  (3)
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Years
  • 1980-1984
  • 1975-1979  (3)
  • 1945-1949
  • 1880-1889
Year
  • 1
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 44 (1979), S. 0 
    ISSN: 1750-3841
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Mice consumed diets which contained caffeine and predominated in either corn starch, sucrose or hydrogenated vegetable oil. When compared by means of an oral glucose tolerance test to mice which had eaten the same diets without caffeine, it was found that they had a more rapid return of blood glucose to resting values. In vivo measurements of glucose uptake by diaphragm and epididymal fat pad revealed differences in this adaptation to caffeine. The adaptive mechanism appeared to vary with type of diet. When mice were given caffeine chronically in their drinking water there was evidence of adaptation occurring in the ability of muscle to increase glycogen stores in the presence of caffeine in vitro. No differences were found in other tissue glycogen levels.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 281 (1979), S. 299-301 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Micromonas pusilla is an extremely small (1.5 to 3.0 ??) photosyrithetic flagellate which occurs widely in both coastal and oceanic waters and is occasionally present in large numbers (103-105 cells 1 *)4. It is therefore a frequently overlooked but important member of the marine nanoplankton. ...
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Journal of thermal analysis and calorimetry 17 (1979), S. 93-99 
    ISSN: 1572-8943
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Résumé On a établi des corrélations entre les températures de décomposition et les fréquences de valence ainsi que les vibrations de déformation des liaisons dans la série des dérivés N-substitués des 2.4- et 2.6-dinitroanilines (DNA). Ces vibrations sont directement influencées par la structure du groupe nitro et sa résonance ainsi que son interaction inductive avec le noyau benzènique. De l'analyse des spectres infra-rouges il ressort une haute sensibilité de la fréquence et, par conséquent, de l'ordre de la liaison CAr-No2 dépendant du caractère de substitution du groupe aminé, tandis que la fréquence des vibrations de valence du groupe nitro n'est influencée que peu. Cependant, la vibration de valence de CAr-NO2 est, en mÊme temps, un indicateur sensible de la stabilité thermique de la 2.4-DNA et également de la 2.6-DNA.
    Abstract: Zusammenfassung Zersetzungstemperaturen wurden mit Valenzfrequenzen und Deformationsbindungsvibrationen einer Reihe von N-substituierter Derivate von 2.4- und 2.6-Dinitroanilinen (DNA) korreliert. Diese Vibrationen werden unmittelbar von der Struktur der Nitrogruppe sowie seiner Resonanz und induktiven Wechselwirkung mit dem Benzolring beeinflu\t. Aus der Analyse der Infrarotspektra geht eine gro\e Empfindlichkeit der Frequenz und folglich der Bindungsordnung CAr-NO2 in AbhÄngigkeit vom Substitutionscharakter der Aminogruppe hervor, wÄhrend die Frequenzen der Valenzvibrationen der o-Nitrogruppe nur wenig beeinflu\t werden. Jedocht ist die Valenzvibration von CAr-NO2 gleichzeitig ein empfindlicher Indikator der thermischen StabilitÄt von 2.4-DNA wie auch von 2.6-DNA.
    Notes: Abstract Decomposition temperatures were correlated with frequencies of valence and deformation bond vibrations in a series of N-substituted derivatives of 2,4- and 2,6-dinitroanilines (DNA). These vibrations are directly influenced by the nitro group structure and by its resonance and inductive interaction with the benzene ring. Analysis of the infrared spectra reveals a great sensitivity of the frequency and hence the CAr- NO2 bond order on the substitution character of the amino group, whereas the frequencies of the valence vibrations of theo-nitro group are influenced to a small extent only. However, at the same time the valence vibration of CAr-NO2 is a sensitive indicator of the thermal stabilities of 2,4-DNA and 2,6-DNA.
    Type of Medium: Electronic Resource
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