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  • General Chemistry  (144)
  • Optic nerve  (2)
  • Blendendruckabfall  (1)
  • 1975-1979  (121)
  • 1945-1949  (9)
  • 1925-1929  (17)
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Year
  • 1
    Electronic Resource
    Electronic Resource
    Synapses of optic nerve afferents in the rat suprachiasmatic nucleus (1978)
    Springer
    Cell & tissue research 194 (1978), S. 37-54 
    Details
    ISSN: 1432-0878
    Keywords: Synapses ; Optic nerve ; Suprachiasmatic nucleus (rat) ; Morphometry
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary The identification of optic synapses in the rat suprachiasmatic nucleus (Güldner, 1978) has made it possible to study them morphometrically. The measurements followed the check-list introduced by Palay and Chan-Palay (1976). There are several items which could usefully be added to this list. The structure of essential synaptic components varies considerably in what is apparently one synaptic population based on morphological criteria. The possible reasons for the variable sizes of the optic boutons containing different amounts of clear and dense core vesicles are discussed in terms of different activities or metabolic states of the individual boutons and/or different metabolic states of neuronal and glial elements in their vicinity. The active zones of optic synapses are also extremely variable. One optic bouton can form several active zones of very different sizes, or form Gray-type-I (“asymmetric”), Gray-type-II (“symmetric”) and intermediate contacts at the same time. The function and/or functional efficiency of a single optic bouton therefore could then be quite different with respect to its various postsynaptic elements. The different appearance of the active zones is discussed mainly in terms of possible regulative influences from neighboring synapses via the postsynaptic neuron.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00209232
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  • 2
    Electronic Resource
    Electronic Resource
    Synapses of optic nerve afferents in the rat suprachiasmatic nucleus (1978)
    Springer
    Cell & tissue research 194 (1978), S. 17-35 
    Details
    ISSN: 1432-0878
    Keywords: Synapses ; Optic nerve ; Suprachiasmatic nucleus ; Ultrastructure ; Rat
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary Synapses of optic nerve afferents (optic synapses) in the rat suprachiasmatic nucleus (SCN) have been identified ultrastructurally. They are easily distinguished from other types of synapses. The optic boutons are characterized by the presence of large mitochondria with a swollen electron lucent matrix and an interconnected tubular system formed by their inner membrane. Other, more variable features include: 1) a scattered pattern of synaptic vesicles which are found throughout the entire presynaptic element with relatively little accumulation near the active zones; 2) the occurrence of dense core vesicles and glycogen granules; 3) the active zones, the majority of which is Gray-type I, but a minority can obviously be classified as Gray's type II; 4) the innervation of smaller peripheral dendrites and dendritic spines. Boutons of this kind are exclusively filled with anterogradely transported horseradish peroxidase injected into both eyes. Very few neuronal elements containing the typical mitochondria have been observed in the SCN on the 6th day post partum, increasingly more on the 9th and 12th day, but considerably higher numbers after opening of the eyes on the 17th and the following days. The location of normal and degenerating optic boutons was examined light- and electron microscopically. In the rostral third of the SCN there are relatively few optic synapses which are found close to the optic chiasma. In the middle portion of the SCN optic synapses increase in number; they are found not only in the ventral part of the nucleus but also in lateral regions. This becomes particularly obvious in the caudal third of the SCN.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00209231
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  • 3
    Electronic Resource
    Electronic Resource
    Strömung zäher Öle in Kapillaren bei hohen Schergeschwindigkeiten und hohen Reibungsleistungen (1947)
    Weinheim : Wiley-Blackwell
    Zeitschrift für die chemische Industrie 19 (1947), S. 135-142 
    Details
    ISSN: 0044-8249
    Keywords: Chemistry ; General Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Bei der laminaren Strömung unter großen Reibungsleistungen treten drei die Strömung wesentlich verändernde Einflüsse auf, die im Bereich geringer Reibungsleistungen und Drücke keine Rolle spielen: die Erwärmung und das Temperaturfeld im strömenden Stoff infolge der Reibung; die Veränderung der Zähigkeit mit dem Druck; eine noch unbestimmte, aber mögliche Veränderung der Zähigkeit mit der Schergeschwindigkeit. Alle drei Einflüsse werden experimentell und rechnerisch an drei Ölen untersucht; die grundsätzliche Aufklärung dieser Zusammenhänge ist für die hydrodynamische Lagerreibung, für die Viskosimetrie und für die Strömung in Rohren und Hochdruckleitungen von Bedeutung. Zur Untersuchung dieser Fragen wurde eine neue Versuchseinrichtung entwickelt, mit der sowohl sämtliche viskosimetrischen und Strömungsdaten als auch die Temperatur des Öles vor und hinter der Kapillare genau gemessen werden können.
    Additional Material: 9 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/ange.19470190505
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  • 4
    Electronic Resource
    Electronic Resource
    Zur Produktionsindexberechnung der chemischen Industrie (1947)
    Weinheim : Wiley-Blackwell
    Zeitschrift für die chemische Industrie 19 (1947), S. 156-156 
    Details
    ISSN: 0044-8249
    Keywords: Chemistry ; General Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/ange.19470190518
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  • 5
    Electronic Resource
    Electronic Resource
    Kohlenhydrat-Eiweißverbindungen (1947)
    Weinheim : Wiley-Blackwell
    Zeitschrift für die chemische Industrie 59 (1947), S. 212-215 
    Details
    ISSN: 0044-8249
    Keywords: Chemistry ; General Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/ange.19470590706
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  • 6
    Electronic Resource
    Electronic Resource
    Über die Fluorescenz von Ölen im ultravioletten Licht (1926)
    Weinheim : Wiley-Blackwell
    Zeitschrift für die chemische Industrie 39 (1926), S. 1032-1032 
    Details
    ISSN: 0044-8249
    Keywords: Chemistry ; General Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/ange.19260393504
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  • 7
    Electronic Resource
    Electronic Resource
    Das Insulin. Einiges über seine Eigenschaften und die Darstellung im Großen (1926)
    Weinheim : Wiley-Blackwell
    Zeitschrift für die chemische Industrie 39 (1926), S. 1051-1053 
    Details
    ISSN: 0044-8249
    Keywords: Chemistry ; General Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/ange.19260393603
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  • 8
    Electronic Resource
    Electronic Resource
    Beiträge zur quantitativen Bestimmung und Trennung des Aluminiums und seiner Begleiter sowie der oxydischen Beimengungen in aluminiumreichen Legierungen (1927)
    Weinheim : Wiley-Blackwell
    Zeitschrift für die chemische Industrie 40 (1927), S. 488-490 
    Details
    ISSN: 0044-8249
    Keywords: Chemistry ; General Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Additional Material: 3 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/ange.19270401704
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  • 9
    Electronic Resource
    Electronic Resource
    Nicolaus Soleas und die Wünschelrute (1927)
    Weinheim : Wiley-Blackwell
    Zeitschrift für die chemische Industrie 40 (1927), S. 778-778 
    Details
    ISSN: 0044-8249
    Keywords: Chemistry ; General Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/ange.19270402705
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  • 10
    Electronic Resource
    Electronic Resource
    Über den gegenwärtigen Stand der Hormonforschung (1928)
    Weinheim : Wiley-Blackwell
    Zeitschrift für die chemische Industrie 41 (1928), S. 1028-1033 
    Details
    ISSN: 0044-8249
    Keywords: Chemistry ; General Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/ange.19280413704
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