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  • 1
    Electronic Resource
    Electronic Resource
    Pesticide residues in the top soil of five West Alabama counties (1974)
    Springer
    Bulletin of environmental contamination and toxicology 12 (1974), S. 378-384 
    Details
    ISSN: 1432-0800
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Medicine
    Notes: Summary The types and levels of pesticide residues in soil samples from five west Alabama counties were determined. Soil samples were taken randomly from preselected sites in each county and were analyzed by gas chromatography. Pesticide residues were found in all samples examined, even soil samples from areas where records indicated that no pesticides had been applied directly. The most prevalent chlorinated hydrocarbons were benzene hexachloride and aldrin while the most abundant organophosphate was malathion.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01709136
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    An extracellular polysaccharide produced by Palmella mucosa Kütz. (1964)
    Springer
    Archives of microbiology 49 (1964), S. 158-166 
    Details
    ISSN: 1432-072X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary An extracellular polysaccharide composed of glucose, fucose, arabinose and glucuronic acid in a molar proportion of 11:6:3:1 is a major end-product of photosynthesis by Palmella mucosa Kütz. The liberation of polysaccharide is related to the age of the culture. Glucose can substitute efficiently for CO2 as the source of carbon for polysaccharide synthesis. Nitrate-nitrogen from sodium, potassium and calcium salts can be used in the mineral salts medium with little differences in carbon metabolism of the alga. Ammonium nitrate produces an acidic medium which limits polysaccharide production. The incorporation of C14 into the polysaccharide from NaHC14O3 shows initially a trend toward intracellular synthesis. The C14 appears in the extracellular polysaccharide after prolonged exposure. Glucose-C14 is actively transformed to polysaccharide material which is an indication that glucose may play an important role in the synthesis of polysaccharide by Palmella mucosa Kütz.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00422139
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
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