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  • 1
    Digitale Medien
    Digitale Medien
    Oxford, UK : Blackwell Publishing Ltd
    Geophysical prospecting 31 (1983), S. 0 
    ISSN: 1365-2478
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Geologie und Paläontologie , Physik
    Notizen: The suitability of VLF ground surveys in the investigation of shallow two-dimensional structures is analyzed. For such structures the polar formalism is derived, necessary in practice since the transmitters are generally not in the structural strike or profile. A simple vertical dike is considered to demonstrate the striking anisotropy which can be expected over such a structure, in particular the high apparent resistivity along the direction of a well-conducting dike and the low resistivity across it. The theory is then confronted with the practical example of an asymmetrical vertical dike resulting from a strike-slip fault. Modelling of the survey results is very successful and yields good confirmation of the polar behaviour. VLF ground surveys thus provide a quick and powerful tool for the study of geological accidents within about 100 m of the surface.
    Materialart: Digitale Medien
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  • 2
    Digitale Medien
    Digitale Medien
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Phytopathology 21 (1983), S. 13-20 
    ISSN: 0066-4286
    Quelle: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Thema: Land- und Forstwirtschaft, Gartenbau, Fischereiwirtschaft, Hauswirtschaft , Biologie
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 3
    Digitale Medien
    Digitale Medien
    s.l. : American Chemical Society
    Journal of the American Chemical Society 106 (1984), S. 1457-1461 
    ISSN: 1520-5126
    Quelle: ACS Legacy Archives
    Thema: Chemie und Pharmazie
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 4
    Digitale Medien
    Digitale Medien
    Springer
    The European physical journal 39 (1980), S. 287-297 
    ISSN: 1434-6036
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Physik
    Notizen: Abstract The Quantum Size Effect (QSE) is expected to exist in metal films. It has been discussed in a number of theoretical papers. The experimental verification is difficult because of the very short Fermi wave length of the charge carriers in metals. Surface roughness of the films and diffuse scattering of the charge carriers from the film surface usually prevent the observation of QSE. We succeeded in preparing Pt-films with surface roughness below 0.3 nm, which also exhibited partly specular reflection of the electrons from the film surface. Oscillations of the conductivity with the film thickness, due to QSE, were observed in the thickness range from 0.5 nm to 2.0 nm. Band splitting was observed in the thickness range from 5 nm to 20 nm by means of tunneling spectroscopy. From the results we suggest that electrons as well as holes in closed Fermi surfaces participate in the QSE. Holes in open Fermi surfaces, despite their larger density, could not be observed. The measurements allow the determination of the Fermi energy and the effective masses of both electrons and holes in quasi amorphous films.
    Materialart: Digitale Medien
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  • 5
    Digitale Medien
    Digitale Medien
    Springer
    Cellular and molecular life sciences 10 (1954), S. 329-330 
    ISSN: 1420-9071
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie , Medizin
    Notizen: Zusammenfassung Die viruzide Wirkung von Extrakten aus Ahornsamen auf Coli-Bakteriophagen ist durch Tannine bedingt. Verschiedene Gerbstoffe zeigen einen zum Teil sehr starken virushemmenden Effekt, wobei nur das extrazelluläre Virus angegriffen wird. Wahrscheinlich handelt es sich um eine Gerbwirkung auf das Protein des Virus. Die pflanzlichen Gerbstoffe tragen vermutlich dazu bei, die Pflanzensäfte virusfrei zu halten.
    Materialart: Digitale Medien
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  • 6
    Digitale Medien
    Digitale Medien
    Springer
    Journal of cancer research and clinical oncology 106 (1983), S. 53-57 
    ISSN: 1432-1335
    Schlagwort(e): Methapyrilene ; Liver tumor ; Preneoplasia ; Adenosine-5-triphosphatase ; γ-Glutamyltranspeptidase
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Summary The antihistaminic drug methapyrilene hydrochloride, which induces liver tumors in rats, was administrated orally to female Wistar rats. The animals were killed after 21, 38, 77, 119, 181, and 196 days. The activities of adenosine-5-triphosphatase (ATPase) and γ-glutamyltranspeptidase (γ-GT) in the liver were investigated histochemically. At 21 days, a homogeneous decrease of ATPase activity as well as a slight increase of γ-GT activity was found in the periportal zone. Additionally, after 38 days hepatocellular foci with reappearance of γ-GT occurred mainly in the periportal zone. After 119 days, foci with increased γ-GT activity as well as a significant reduction of ATPase activity could be observed predominantly in the periportal region. The size and number of these putative preneoplastic foci were increased according to the time of administration of methapyrilene hydrochloride. After 181 days of methapyrilene hydrochloride treatment three of five animals developed hyperplastic nodules with corresponding alterations of enzyme activities. Methapyrilene hydrochloride — a carcinogen with an unknown mechanism of reaction-produces preneoplastic changes that are analogous to the well known preneoplastic lesions in the liver observed after administration of other carcinogenic agents.
    Materialart: Digitale Medien
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  • 7
    ISSN: 1436-5065
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Geographie , Physik
    Beschreibung / Inhaltsverzeichnis: Summary In the course of a one-year-period, the number of negative and positive small ions contained by the outside air was continuously recorded by means of a ion counter (manufacturer: Periso, type pN-01. Characteristic developments in the weather situation in the Greater Graz area showed specific changes in the equilibrium of negative and positive small ions. However, the differences in ion densities remained within a range of only 10–15%. Also in the case of meteorological conditions which corresponded to foehn weather, there were not the significant changes in the ionization of the air described in several studies.
    Notizen: Zusammenfassung Mittels eines lonenzählers (Firma Periso: Typ pN-01) wurde während eines Jahres kontinuierlich der Gehalt der Außenluft an negativen oder positiven Kleinionen registriert. Bei charakteristischen Wetterabläufen im Raum Graz fanden wir spezifische Verschiebungen im Gleichgewicht von negativen und positiven Kleinionen. Die Differenz innerhalb der Ionendichten bewegten sich allerdings nur im Bereich von etwa 10–15%. Auch bei meteorologischen Bedingungen, die einer Föhnlage entsprachen, traten nicht jene gravierenden Änderungen in der Ionisation der Luft auf, wie sie mehrmals in der Literatur beschrieben wurden.
    Materialart: Digitale Medien
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  • 8
    Digitale Medien
    Digitale Medien
    Springer
    International journal of earth sciences 39 (1951), S. 99-113 
    ISSN: 1437-3262
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Geologie und Paläontologie
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 9
    Digitale Medien
    Digitale Medien
    Springer
    International journal of earth sciences 39 (1951), S. 131-136 
    ISSN: 1437-3262
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Geologie und Paläontologie
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 10
    Digitale Medien
    Digitale Medien
    Springer
    Acta neuropathologica 60 (1983), S. 132-136 
    ISSN: 1432-0533
    Schlagwort(e): Cloverleaf skull anomally ; Tempral lobe dysgenesis ; Thanatophoric chondrodystrophy ; Ventricular diverticle
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Summary An early fetal case of cloverleaf skull anomaly associated with thanatophoric chondrodystrophy is described. Localized ventricular diverticles are a peculiar finding. In addition there are previously described malformations limited to the temporal lobes and comprising plump gyri with abnormal deep sulci, thick periventricular heterotopias, dysgenesis of the parahippocampal gyrus, agenesis of the Ammon's horn, and small micropolygyria. The skull deformity is not dependent on hydrocephalus, demonstrating inconsistencies in previous pathogenetic concepts.
    Materialart: Digitale Medien
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