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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Diabetologia 12 (1976), S. 181-187 
    ISSN: 1432-0428
    Keywords: Mutation ob/ob ; obese mouse ; streptozotocin ; insulin resistance ; hyperphagia ; spontaneous diabetes ; diabetes in mice ; obesity in mice ; hereditary obesity ; obese-hyperglycaemic mice ; B-cells
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Primary hypersecretion of insulin has been suggested as one possibility for the genetic fault of ob/ob mice. To test this hypothesis, streptozotocin (SZO) was used to reduce permanently insulin secretion in young lean and obese mice. After establishment of hyperglycaemia and weight reduction in treated obese mice (obese-SZO), daily insulin replacement was begun in some (obese-SZO-Ins). Obese-SZO mice maintained insulin levels and body weights similar to lean controls, though they were shorter and fatter, while food intake and blood sugar levels exceeded lean values. Obese-SZO-Ins mice with reduced islet hyperplasia, but great insulin resistance, gained more weight than obese-SZO mice; had high serum insulin and controlled blood glucose; and exhibited hyperphagia. These results suggest that primary hypersecretion of insulin cannot be the genetic defect, as ob/ob mice are hyperphagic, hyperglycaemic, insulin resistant, and “obese” even when insulin levels are restricted.
    Type of Medium: Electronic Resource
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  • 2
    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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  • 3
    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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  • 4
    ISSN: 1432-0630
    Keywords: 79.20
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract Channeling effect techniques with a 2.0 MeV He+ Rutherford backscattering and transmission electron microscopy were used to characterize the crystallized layers after Q-switched ruby laser irradiation of 4000 Å thick amorphous layer on 〈100〉 and 〈111〉 underlined crystal substrates. At a laser energy density of 2.5 J/cm2 the crystal layer on the 〈111〉 specimen contains a large density of stacking-faults, that on 〈100〉 specimen contains a very small amount of screw dislocation lines. High quality single-crystal layers have been obtained after irradiation at 3.5 J/cm2. From a comparison with the growth rate and defect structure observed in thermally annealed implanted-amorphous layers, we propose that crystal growth by 50 ns pulse laser annealing occurs by melting the amorphous layer.
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Springer
    Applied physics 5 (1975), S. 347-350 
    ISSN: 1432-0630
    Keywords: Ion implantation ; Arsenic range ; Backscattering analysis
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract MeV4He ion backscattering and differential sheet resistivity measurements were made on As implants into silicon at room temperature. Analysis of backscattering measurements yields the projected rangeR p and projected standard deviation ΔR p . Over the energy range of 50 to 250 keV, the values ofR p are found to agree well with LSS theoretical predictions; however, values of ΔR p are systematically higher than theoretical calculations. Backscattering and differential sheet resistivity measurements on samples annealed at 950°C are in general agreement and indicate diffusional broadening of the profile.
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Springer
    Journal of statistical physics 18 (1978), S. 529-531 
    ISSN: 1572-9613
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Type of Medium: Electronic Resource
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  • 7
    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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