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  • 1985-1989  (11)
  • 1905-1909  (2)
  • 1880-1889  (1)
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  • 11
    ISSN: 1573-0832
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract Fusarium spp. isolated from plant materials grown in the hot, humid climate of North Carolina were tested for production of mycotoxins. Isolates of F. acuminatum, F. graminearum, F. moniliforme, F. oxysporum, and F. solani produced zearalenone while isolates of F. equiseti and F. graminearum produced T-2 toxin and deoxynivalenol, respectively. This is the first report of zearalenone production by F. solani. The toxins were identified by capillary gas chromatography-mass spectrometry. These findings suggest that there are toxigenic strains of Fusarium indigenous to the warmer regions of the USA and that fasariotoxicoses of animals in this region are not necessarily the result of importing toxic grains from the cooler, upper midwestern USA.
    Type of Medium: Electronic Resource
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  • 12
    Electronic Resource
    Electronic Resource
    Springer
    Acta mechanica 63 (1986), S. 61-72 
    ISSN: 1619-6937
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Summary Many of the observed but yet unexplained phenomena associated with granular flow have been attributed to the development of a layered microstructure within the material. In particular the microstructure development has been called on to explain many of the experimental observations that cannot be accounted for in the presently available theoretical studies. While the attributions are based on sound physical arguments, the complexity of the processes involved has prohibited the inclusion of microstructure development in theoretical models. As a result no one has yet demonstrated how and to what extent the microstructure can account for the phenomena to which it has been ascribed. This paper addresses the effect of microstructure development for two dimensional flows by incorporating a heuristic model of the microstructure into a simple theoretical analysis.
    Type of Medium: Electronic Resource
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  • 13
    ISSN: 1573-5117
    Keywords: paleolimnology ; diatoms ; nutrients ; phytoplankton production
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Biogenic silica (BSi), total phosphorus (TP), and biologically available phosphorus (AVP) were measured in short cores from Lake Michigan, Lake Erie, and Lake Ontario. Peaks in BSi concentration and peaks in BSi:TP or BSi:AVP ratios provided stratigraphic signals of water column silica (Si) depletion as a response of increased diatom production to P enrichment and decreased diatom production resulting from silica depletion. By contrast the stratigraphic record of P accumulation provided very weak signals of the historical nutrient enrichment in the water column. These results indicate that system P recycling has a higher rate constant than Si recycling and, as a consequence, that relatively small levels of P enrichment can increase diatom production and sedimentation eventually causing Si depletion and Si-limited diatom production in the water mass.
    Type of Medium: Electronic Resource
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  • 14
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Liebigs Annalen 255 (1889), S. 339-356 
    ISSN: 0075-4617
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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