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  • 1970-1974  (3)
Material
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  • 1970-1974  (3)
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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    International archives of occupational and environmental health 29 (1972), S. 189-200 
    ISSN: 1432-1246
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary A series of exposure experiments with Triethylaluminum were undertaken using animals, and the following results were obtained: 1. Gas Chromatographic analysis of the exposure gas showed that the gas contained various combustion products of TEA in the air and contained an unidentified substance which had a retention time equivalent to a 6-carbon compound. The substance was assumed to be TEA itself. 2. A moderate systemic effect of “TEA” gas on various organs was observed when it contained considerable amounts of the 6-carbon compound. 3. Characteristic changes in the lungs of animals exposed to “TEA” were found by histological examination. The changes in the lungs were a result of moderate irritation. 4. The effects of exposure to the “TEA-toluene” mixture were more severe in the animals than the effects of “TEA”. Those effects would be mainly due to toluene because the same effects could be seen by the exposure to toluene alone. 5. Direct action of “TEA” on the skin was identical to that of a burn. A possible relation between these results and the clinical symptoms found among some of the workers handling TEA was briefly discussed.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Naturwissenschaften 60 (1973), S. 157-158 
    ISSN: 1432-1904
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology , Natural Sciences in General
    Type of Medium: Electronic Resource
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  • 3
    ISSN: 1432-2048
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary Bundle-sheath cells isolated by the grinding and filtration procedure of Edwards and Black (1971b) from species of plants having the C4-dicarboxylic acid pathway of photosynthesis were tested for the decarboxylation of malate from the C4-carboxyl position. The bundle-sheath cells, which showed high malic enzyme activity in extracts, decarboxylated 4[14C]malate at rates sufficient to be involved in photosynthesis. The malate decarboxylation is dependent on the addition of magnesium or manganese and NADP+. The activity was increased by raising the temperature from 30 to 50°. The evidence supports the idea that malate may be a carboxyl donor to the reductive pentose-phosphate cycle in bundle-sheath cells in certain C4-dicarboxylic acid pathway plants such as Zea mays L., Sorghum bicolor L., and Digitaria sanguinalis (L.) Scop.
    Type of Medium: Electronic Resource
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