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  • Chalcogenides  (2)
  • 1-Aminocyclopropane-1-carboxylate synthase  (1)
  • Springer  (3)
  • 1980-1984  (3)
  • 1
    Electronic Resource
    Electronic Resource
    Wound ethylene and 1-aminocyclopropane-1-carboxylate synthase in ripening tomato fruit (1981)
    Springer
    Planta 151 (1981), S. 476-481 
    Details
    ISSN: 1432-2048
    Keywords: 1-Aminocyclopropane-1-carboxylate synthase ; Ethylene ; Lycopersicon ; Ripening ; Wounding
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Ethylene production, 1-aminocyclopropane-1-carboxylic acid (ACC) levels and ACC-synthase activity were compared in intact and wounded tomato fruits (Lycopersicon esculentum Mill.) at different ripening stages. Freshly cut and wounded pericarp discs produced relatively little ethylene and had low levels of ACC and of ACC-synthase activity. The rate of ethylene synthesis, the level of ACC and the activity of ACC synthase all increased manyfold within 2 h after wounding. The rate of wound-ethylene formation and the activity of wound-induced ACC synthase were positively correlated with the rate of ethylene production in the intact fruit. When pericarp discs were incubated overnight, wound ethylene synthesis subsided, but the activity of ACC synthase remained high, and ACC accumulated, especially in discs from ripe fruits. In freshly harvested tomato fruits, the level of ACC and the activity of ACC synthase were higher in the inside parts of the fruit than in the pericarp. When wounded pericarp tissue of green tomato fruits was treated with cycloheximide, the activity of ACC synthase declined with an apparent half life of 30–40 in. The activity of ACC synthase in cycloheximide-treated, wounded pericarp of ripening tomatoes declined more slowly.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00386542
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  • 2
    Electronic Resource
    Electronic Resource
    Thermogravimetrische Untersuchungen an zeolithischen Erdalkalithioferraten(III) (1980)
    Springer
    Monatshefte für Chemie 111 (1980), S. 475-481 
    Details
    ISSN: 1434-4475
    Keywords: Chalcogenides ; Thermogravimetry ; Zeolitic Hydrates
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract The degradation of the hydrates of the alkaline earth thioferratesM(FeS2)2·xH2O,M=Ca, Sr, Ba, resulting from ion exchange on KFeS2, is studied by TG and by X-ray diffraction analysis. The zeolitic character of the very loosely bound water in these compounds is proved. There exist several cristallographically distinct phases as a function of the water content.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00903244
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  • 3
    Electronic Resource
    Electronic Resource
    Na3Fe2S4, ein Thioferrat mit gemischt valenter sk∞/1[FeS2]-Kette (1981)
    Springer
    Monatshefte für Chemie 112 (1981), S. 83-89 
    Details
    ISSN: 1434-4475
    Keywords: Chalcogenides ; Na3Fe2S4 ; Thioferrates
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract Na3Fe2S4 has been prepared from Na2S, S and Fe. It crystallizes in space group Pnma,a=6.6333 (5) Å,b=10.675 (1) Å,c=10.677 (2) Å,Z=4. The crystal structure, as determined from single crystal four-circle diffractometer data (R=2.8%), consists of sk∞/1[FeS2]-chains formed by slightly distorted edge sharing [FeS4]-tetrahedra, the iron atoms having a formal valency of +2.5. The sodium ions are approximately octahedrally coordinated. Exposed to air, Na3Fe2S4 readily takes up water to form a hydrate by a pertially topochemical reaction.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00906245
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