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  • Articles: DFG German National Licenses  (3)
  • 1990-1994  (3)
  • 1985-1989
  • 1950-1954
  • 1940-1944
  • 1991  (3)
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  • Articles: DFG German National Licenses  (3)
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  • 1990-1994  (3)
  • 1985-1989
  • 1950-1954
  • 1940-1944
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  • 1
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Oxford journal of archaeology 10 (1991), S. 0 
    ISSN: 1468-0092
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Archaeology
    Notes: Summary. Until comparatively recently the archaeological study of ancient towns had been largely conditioned by urban development or individual research interests. This is especially true of Mediterranean sites whose especial richness has generated most attention upon their monumental aspect. Such work provides us with only partial glimpses of urban landscapes which are by definition complex and dynamic. An increasing awareness of this in recent years has led to archaeologists explicitly adopting sampling based strategies when confronting ancient towns. This paper attempts to outline the sampling-based research design employed at a multi-period town site in southern Spain. The integrated use of topographical survey, systematic surface sherding and geophysics provided a valuable insight into the spatial patterning of surface and sub-surface archaeological features. This allowed a hypothesis about the ancient topography of the town to be proposed and for it to be successfully tested by open-area excavation.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1619-1560
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Type of Medium: Electronic Resource
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  • 3
    ISSN: 1573-1561
    Keywords: Plant defense ; air pollution ; acidic deposition ; biological indicators ; plant polyphenols ; total phenolics ; proanthocyanidins ; condensed tannins ; secondary metabolites ; Pinus taeda
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract Tannin and total phenolic levels in the foliage of loblolly pine (Pinus taeda L.) were examined in order to evaluate the effect of atmospheric pollution on secondary plant metabolism. The trees were exposed to four ozone concentrations and three levels of simulated acid rain. Tannin concentration (quantity per gram) and content (quantity per fascicle) were increased in foliage exposed to high concentrations of ozone in both ozone-sensitive and ozone-tolerant families. No effect of acid rain on tannins was observed. Neither total phenolic concentration nor content was significantly affected by any treatment, indicating that the ozone-related increase in foliar tannins was due to changes in allocation within the phenolic group rather than to increases in total phenolics. The change in allocation of resources in the production of secondary metabolites may have implications in herbivore defense, as well as for the overall energy balance of the plant.
    Type of Medium: Electronic Resource
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