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  • 1970-1974  (4)
  • 1935-1939
  • 1870-1879
  • General Chemistry  (2)
  • Chemical Engineering  (1)
  • Ultrastructure  (1)
Source
Material
Years
Year
Keywords
  • 1
    Electronic Resource
    Electronic Resource
    Early stages of synaptogenesis in the cervical spinal cord of the chick embryo (1973)
    Springer
    Cell & tissue research 138 (1973), S. 475-488 
    Details
    ISSN: 1432-0878
    Keywords: Synaptogenesis ; Spinal cord ; Chick embryo ; Coated vesicles ; Ultrastructure
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary Synaptogenesis was studied in 3, 4, 5 and 8 day embryos. A small number of synapses were located in the marginal zone near the motor region in 3–4 day embryos. At 5 days the number of synapses increased and synapses were also found within the motor region. At 8 days there was a large increase in the total number of synapses and most were found within the motor region. At this stage, for the first time, many knobs contained flattened synaptic vesicles. Synapses on the perikarya were rarely but occasionally observed both at the 5 and 8 day stages. A few synapses were located in the marginal zone near dorsal root entry at the 5 day stage and the number increased by the 8 day stage. Although this sequence of synaptic development resembles that found in the monkey fetus, differences in behavioral development between these two species indicate that descriptive relationships between synaptic and behavioral development must be made cautiously. Furthermore, evidence is presented which indicates that the junctional specialization is the first sign of a developing synapse and that coated vesicles, possibly derived from the Golgi apparatus, which are fused to the neural plasmalemma may be related to the initial formation of the junctional specialization.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00572291
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    Optimal control of a continuous flow stirred tank chemical reactor (1970)
    Hoboken, NJ : Wiley-Blackwell
    AIChE Journal 16 (1970), S. 916-924 
    Details
    ISSN: 0001-1541
    Keywords: Chemistry ; Chemical Engineering
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: The time optimal control problem for jacket cooled continuous flow stirred tank reactor (CSTR) with an exothermic, irreversible, second-order, homogeneous, liquid-phase reaction (the saponification of ethyl acetate) was solved with the maximum principle and phase plane analysis. Both experimental studies and analogue computer simulation studies were conducted.The overall performance of the experimental system agreed very well with the performance of the corresponding system simulated on an analogue computer. However, there were enough differences in the observed and predicted operating states and switching curves to warrant the conclusion that the experimental performance can be significantly improved if experimental results are used to modify the results predicted with computer analysis. These differences were attributed to uncertainties in the model and the values of the model parameters as well as nonrandom (and unforeseen) measurement errors.
    Additional Material: 17 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/aic.690160611
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    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    Recherchen mit dem IDC-System (1970)
    Weinheim : Wiley-Blackwell
    Zeitschrift für die chemische Industrie 82 (1970), S. 598-605 
    Details
    ISSN: 0044-8249
    Keywords: Chemistry ; General Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Das Dokumentations-System der Internationalen Dokumentationsgesellschaft für Chemie mbH (IDC) arbeitet mit Mitteln der elektronischen Datenverarbeitung. Es können Strukturen, Reaktionen und Sachverhalte gespeichert und recherchiert werden. Strukturen und Reaktionen werden als Terms einer Facettenklassifikation codiert, Sachverhalte im Klartext gespeichert. Zur Zeit sind 900000 Formeln, darunter zahlreiche Markush-Formeln, aus Patent- und Zeitschriftenveröffentlichungen auf Magnetband gespeichert. Die Recherche in diesem Bestand geschieht mit IDC-Programmen, die pro Frage durchschnittlich weniger als 1 Minute Computerzeit (CPU-Zeit) benötigen. Die Strukturterms können maschinell aus topologischen Einspeicherungen erzeugt werden. Erfaßt wird die niedermolekulare organische Chemie; eine Erweiterung auf das Makromolekulargebiet ist möglich und vorgesehen.
    Additional Material: 9 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/ange.19700821505
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Use of the IDC System (1970)
    Weinheim : Wiley-Blackwell
    Angewandte Chemie International Edition in English 9 (1970), S. 576-583 
    Details
    ISSN: 0570-0833
    Keywords: Documentation ; Chemistry ; General Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: The documentation system operated by the IDC Internationale Dokumentationsgesellschaft für Chemie mbH uses electronic data processing methods. It allows the storage and retrieval of structures, reactions, and nonstructural keyword information. Structures and reactions are coded as terms of a faceted classification, while keywords are stored in clear text. 900000 formulas from patent and journal publications, including many Markush formulas, have now been stored on magnetic tape. Searches in this store are carried out with IDC programs, which require an average computer time of less than 1 minute per inquiry (CPU time). The structure terms can be produced by computer from topological records. The field covered at present is low molecular weight organic chemistry, though extension to macromolecular chemistry is feasible, and is in fact planned.
    Additional Material: 9 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/anie.197005761
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
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