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  • 1
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 127 (1931), S. 738-739 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] KIKUCHIl first described examples of electron diffraction in which a crystal appeared to behave as a two-dimensional or cross-grating. Very thin sheets of mica give an equilateral net-like pattern of diffracted beams on the photographic plate (the N pattern), as if the only ...
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Physics Letters 8 (1964), S. 193-194 
    ISSN: 0031-9163
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Physics
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Chemical Physics Letters 191 (1992), S. 169-174 
    ISSN: 0009-2614
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Small Ruminant Research 13 (1994), S. 199-204 
    ISSN: 0921-4488
    Keywords: Ewe ; Mammary structure ; Mammography ; Ultrasound
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Springer
    The European physical journal 76 (1932), S. 576-596 
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Zusammenfassung Für das Studium der Struktur dünner Kristallschichten sind die Elektroneninterferenzen besonders gut geeignet. Sie gestatten die Untersuchung dünnster Schichten bei niedrigen Expositionszeiten und bei kleinem Strahlquerschnitt. Systematische Untersuchungen an dünnen Schichten von etwa 20 verschiedenen Substanzen haben ergeben, daß in Schichten, die bei Atmosphärendruck aufgedampft sind, fast ausnahmslos, und in Schichten, die im Vakuum aufgedampft sind, sehr häufig eine geregelte Orientierung der Kristallkörner besteht. Diese Faserstruktur ist gewöhnlich dadurch charakterisiert, daß eine bestimmte Netzebene (mit mehr oder weniger großer Streuung) parallel zu der ebenen Unterlage orientiert ist. Die theoretische Deutung der entsprechenden Faserdiagramme ist sowohl bei senkrechter wie auch bei schiefer Durchstrahlung der kristallinen Schicht besonders einfach, weil die Wellenlänge der verwendeten Elektronenstrahlen klein gegenüber dem Netzebenenabstand ist. Auf der anderen Seite beobachtet man bei langsamem Aufdampfen einer dünnen Schicht im Vakuum zu Anfang stets eine mehr oder weniger starke Verbreiterung der Interferenzringe, die auf eine sehr geringe Korngröße, d. h. auf einen „kolloidalen Zustand“ der Schicht schließen läßt. Mit wachsender Schichtdicke und mit wachsender Verdampfungsgeschwindigkeit nimmt im allgemeinen die Korngröße zu. An geeigneten Kristallen (Cd J2) kann man aber auch den (bei Zimmertemperatur) spontanen Übergang aus dem kolloidalen Zustand regelloser Ver∈ilung in den „grobkristallinen“ Zustand vollkommener Orientierung bzw. schließlich zum orientierten Einkristall direkt verfolgen; mit diesem Übergang ist nicht nur ein spontanes Wachstum der Kristalle auf ein Vielfaches ihrer ursprünglichen Größe, sondern auch die räumliche Ordnung der anfangs regellos verteilten Kristallite verknüpft.
    Type of Medium: Electronic Resource
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  • 6
    ISSN: 1432-1106
    Keywords: Tetanus toxin ; Neuromuscular transmission ; Fast and slow muscles ; White, red, and intermediate muscle fibres ; End-plate structures
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Various doses of tetanus toxin were injected into three hind leg and two fore leg muscles of the rat. The neuromuscular transmission was tested by recording the mass action potential of the muscles elicited by a single electrical stimulus to the motor nerve after strong symptoms of local tetanus had developed. The muscle responses were depressed and blocked at lower toxin doses in the fast tibialis anterior than in the mixed gastrocnemius latemlis, while blocking of the slow soleus required the highest dose. The extensor carpi radialis and the flexor carpi ulnaris muscles showed medium sensitivity. In all five muscles the contraction time was measured and correlated with its individual minimal blocking dose. The more phasic (i.e., the faster) the muscle, the more sensitive its neuromuscular transmission was to tetanus toxin. The proportional distribution of red, white, and intermediate fibres, which are associated with specific end-plate types, was evaluated for the five muscles. The percentage of white fibres in the muscles displayed a very good negative correlation with the blocking dose. The relation between structures of end-plates and effects of tetanus toxin were analysed and it is suggested that the differences in sensitivity to tetanus toxin in the neuromuscular transmission in the five muscles is determined by a differential distribution of endplates with varying sensitivities to this toxin due to structural properties.
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    Springer
    Electrical engineering 29 (1935), S. 371-386 
    ISSN: 1432-0487
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 129 (1932), S. 545-545 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] MR. R. C. FRENCH has reported on electron diffraction experiments on polished metal surfaces (copper, silver).1 The fact that the diffraction rings become more and more diffuse if the surface is carefully polished is, he concludes, an experimental confirmation of Sir George ...
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    Springer
    Pediatric radiology 9 (1980), S. 43-44 
    ISSN: 1432-1998
    Keywords: Uriniferous perirenal pseudocyst ; Urinoma ; Pseudocyst, perirenal ; Calcification, abdominal ; Mass, abdominal
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Radiologically visible calcification in the wall of a uriniferous perirenal pseudocyst is rare. This unusual finding was seen in a newborn infant who was found to have a left flank mass on the first day of life. When perirenal pseudocysts occur in infants, they are usually caused by congenital obstructive lesions of the urinary tract.
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    Springer
    Pflügers Archiv 326 (1971), S. 324-333 
    ISSN: 1432-2013
    Keywords: Renal Sympathetic Reflex ; Spinal Sympathetic Reflex ; Supraspinal Sympathetic Reflex ; Noradrenaline ; Baroceptor Afferent Stimulation ; Inhibitory Descending Pathways ; Sympathische Reflexe ; Spinale sympathische Reflexe ; Supraspinale sympathische Reflexe ; Noradrenalin ; Bulbäre depressorische Reizung ; Hemmende absteigende Fasern
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary 1. In chloralose anesthetized cats, the sympathetic reflex discharge was recorded from the renal sympathetic nerve. 2. The early-spinal and late-supraspinal sympathetic reflex discharges were elicited by single electrical stimulation of the thoracic dorsal roots. 3. Increased excitation of the baroceptor afferents produced by a rise of blood pressure after injection of noradrenaline caused strong inhibitition of the latesupraspinal reflex discharge. The early-spinal reflex discharge was only rarely affected. 4. Electrical stimulation of the medullary depressor area caused inhibition of the spinal and supraspinal reflex discharges. 5. It is concluded that spinal reflex pathways receive some inhibitory descending influences from the medulla oblongata.
    Type of Medium: Electronic Resource
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