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  • Analytical Chemistry and Spectroscopy  (3)
  • ecology  (2)
  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Journal of aquatic ecosystem stress and recovery 2 (1973), S. 277-286 
    ISSN: 1573-5141
    Keywords: ecology ; objectives ; water management ; Amoeba-approach
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Dutch integral water management aims to restore and maintain healthy aquatic ecosystems, which can sustain most human uses. Clear ecological objectives are necessary. Sustainability of fundamental ecological values (production and yield, species diversity, and self-regulation) is assumed to be best preserved in the reference situation. This is the situation, in which human influence is minimal. A general method to present ecological information, the Amoeba approach is discussed. This approach uses selected species as representatives for the ecosystem. Criteria for the selection of species are discussed. For each species (target variable) the current situation, the reference situation, and estimated effects of measures can be found and plotted in an amoeba-like figure. The presentation is a simplification and is therefore easily understood by managers, politicians, and the public. It's application for some Dutch inland waters is discussed.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Journal of aquatic ecosystem stress and recovery 2 (1993), S. 277-286 
    ISSN: 1573-5141
    Keywords: ecology ; objectives ; water management ; Amoeba-approach
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Dutch integral water management aims to restore and maintain healthy aquatic ecosystems, which can sustain most human uses. Clear ecological objectives are necessary. Sustainability of fundamental ecological values (production and yield, species diversity, and self-regulation) is assumed to be best preserved in the reference situation. This is the situation, in which human influence is minimal. A general method to present ecological information, the Amoeba approach is discussed. This approach uses selected species as representatives for the ecosystem. Criteria for the selection of species are discussed. For each species (target variable) the current situation, the reference situation, and estimated effects of measures can be found and plotted in an amoeba-like figure. The presentation is a simplification and is therefore easily understood by managers, politicians, and the public. It's application for some Dutch inland waters is discussed.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 3
    Electronic Resource
    Electronic Resource
    Chichester : Wiley-Blackwell
    Organic Magnetic Resonance 22 (1984), S. 454-455 
    ISSN: 0030-4921
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: The 200 MHz 1H NMR spectra of pilocarpine, pilocarpine.HCl and isopilocarpine.HCl have been studied. Evidence is presented for the preferred conformations of the compounds in aqueous solution, with the methylimidazolyl moiety antiperiplanar with respect to the α-carbon of the butanolide ring.
    Additional Material: 2 Tab.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Chichester : Wiley-Blackwell
    Organic Magnetic Resonance 24 (1986), S. 832-833 
    ISSN: 0749-1581
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: An analysis of the 1H NMR spectra of polyhydroxycarboxylates is presented. Conclusions with regard to the configuration and the conformation are drawn from chemical shifts and vicinal coupling constants.
    Additional Material: 2 Tab.
    Type of Medium: Electronic Resource
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  • 5
    ISSN: 0749-1581
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Tetrahydro-2-(3,4 -dimethoxyphenyl)-4-[(3,4-dimethoxyphenyl)methyl]-3-furanmethanol has been isolated from Monechrna ciliaturn. Its structure was deduced from the 200 MHz 1H NMR spectrum.
    Additional Material: 1 Tab.
    Type of Medium: Electronic Resource
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