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  • 1
    Electronic Resource
    Electronic Resource
    The Chemistry of Carbonyl Fluoride. II. Synthesis of Perfluoroisopropyl Ketones (1962)
    s.l. : American Chemical Society
    Journal of the American Chemical Society 84 (1962), S. 4285-4288 
    Details
    ISSN: 1520-5126
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/ja00881a018
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    The Use of Memory (1983)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of philosophy of education 17 (1983), S. 0 
    Details
    ISSN: 1467-9752
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Education , Philosophy
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1467-9752.1983.tb00018.x
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Metabolic adaptation of Zostera marina (eelgrass) to diurnal periods of root anoxia (1984)
    Springer
    Marine biology 83 (1984), S. 141-147 
    Details
    ISSN: 1432-1793
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract The temperate seagrass Zostera marina L. is common in coastal marine habitats characterized by the presence of reducing sediments. The roots of this seagrass grow in these anoxic sediments, yet eelgrass is highly productive. Through photosynthesis-dependent oxygen transport from leaves to roots, aerobic respiration is supported in eelgrass roots only during daylight; consequently, roots are subjected to diurnal periods of anoxia. Under anoxic root conditions, the amino acids alanine and γ-amino butyric acid accumulate within a few hours to account for 70% of the total amino acid pool, while glutamate and glutamine decline. Little ethanol is produced, and the pool size of the organic acid malate changes little or declines slowly. Upon the resumption of shoot photosynthesis and oxygen transport to the roots, the accumulated γ-amino butyric acid declines rapidly, glutamate and glutamine pools increase, and alanine declines over a 16-h period. These adaptive metabolic responses by eelgrass to diurnal root anoxia must contribute to the successful exploitation of shallow-water marine sediments that have excluded nearly all vascular plant groups. A metabolic scheme is presented that accounts for the observed changes in organic and amino acid pool sizes in response to anoxia.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00394721
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  • 4
    Electronic Resource
    Electronic Resource
    Application of capillary supercritical fluid chromatography to the analysis of a middle distillate fuel (1984)
    Springer
    Chromatographia 18 (1984), S. 542-545 
    Details
    ISSN: 1612-1112
    Keywords: Supercritical fluid chromatography ; Alumina ; Fused silica capillary columns ; Middle distillate fuel
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Summary The application of capillary supercritical fluid chromatography (SFC) to the analysis of a middle distillate fuel is described. Small diameter (50μm i.d.) fused-silica capillary columns coated with crosslinked 50% phenyl polymethylphenyl siloxane provided high separation efficiency and good compatibility with flame ionization detection. High resolution separations of the chemical class fractions obtained by adsorption chromatography on alumina were obtained using carbon dioxide as the supercritical mobile phase and simple pressure programming techniques. In addition to the less polar fuel components, supercritical carbon dioxide allowed chromatography of the nitrogen-containing polycyclic aromatic hydrocarbon fraction and the hydroxylated polycyclic aromatic materials.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02265691
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  • 5
    Electronic Resource
    Electronic Resource
    Copolymere und Fasern aus VinylidendicarbonitrilVortrag auf der Tagung der GDCh-Fachgruppe „Kunststoffe und Kautschuk“ am 10. April 1962 in Bad Nauheim (1962)
    Weinheim : Wiley-Blackwell
    Zeitschrift für die chemische Industrie 74 (1962), S. 545-550 
    Details
    ISSN: 0044-8249
    Keywords: Chemistry ; General Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Vinylidendicarbonitril (Vinylidencyanid) zeigt bei radikalisch gestarteter Copolymerisation eine viel stärkere Neigung zur Bildung von alternierend aufgebauten 1:1-Copolymeren als Acrylnitril. Während Polyvinylidencyanid trotz der molekularen Symmetrie nicht kristallisiert, sind alternierende Copolymere, vor allem mit Butadien, Isopren, Isobutylen und Vinylidenchlorid, leicht kristallisierbar. Aus höherschmelzenden Copolymeren wurden Fasern hergestellt und auf ihre physikalischen Eigenschaften geprüft. Besonders Fasern aus den Copolymeren mit Vinylacetat und Vinylchlorid zeigen im nassen und im trockenen Zustand ein hervorragendes elastisches Verhalten. Die Faser aus dem alternierend aufgebauten Copolymeren von Vinylidencyanid und Vinylacetat (Darvan®-Nytrilfaser) ist nur mäßig orientiert und zeichnet sich durch Weichheit, gute elastische Erholung und Sprungelastizität im trockenen und nassen Zustand aus.
    Additional Material: 9 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/ange.19620741506
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  • 6
    Electronic Resource
    Electronic Resource
    Copolymers and Fibers from VinylidenedicarbonitrileLecture at the Meeting of the Gesellschaft Deutscher Chemiker, Section “Kunststoffe und Kautschuk”, on April 10th. 1962 at Bad Nauheim (Germany). (1962)
    Weinheim : Wiley-Blackwell
    Angewandte Chemie International Edition in English 1 (1962), S. 425-430 
    Details
    ISSN: 0570-0833
    Keywords: Copolymers ; Fibers ; Vinylidenedicarbonitrile ; Chemistry ; General Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Vinyldendicarbonitrile (Vinylidene cyanide) on free redical catalyzed copolymerization shows a much stronger tendency to form 1:1 alternating copolymers than acrylonitrile. While bulk poly(vinylidene cyanide) fails to crystallize, despite its molecular symmetry, several alternating copolymers are readily crystallizable, notably those containing butadiene, isoprene, isobutylene, or vinylidene chloride. Fibers have been prepared from a number of the higher melting copolymers and examined for physical properties. Fibers from the vinyl acetate and vinyl chloride copolymers show expectional elastic behavior both when dry and wet. The fiber from the vinylidene cyanide |vinyl acetate alternating copolymer (Darvan® nytril fiber) is only moderately oriented and is characterized by exceptional softness and excellent elastic recovery and resilience, both when dry and wet.
    Additional Material: 9 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/anie.196204251
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    Paper (German National Licenses)
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