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  • 1
    Electronic Resource
    Electronic Resource
    Truncated horseshoes and formal languages in chaotic scattering (1993)
    Woodbury, NY : American Institute of Physics (AIP)
    Chaos 3 (1993), S. 459-473 
    Details
    ISSN: 1089-7682
    Source: AIP Digital Archive
    Topics: Physics
    Notes: In this paper we study parameter families of truncated horseshoes as models of multiscattering systems which show a transition to chaos without losing hyperbolicity, so that the topological features of the transition are completely describable by a parametrized family of symbolic dynamics. At a fixed parameter value the corresponding horseshoe represents the set of orbits trapped in the scattering region. The bifurcations are a pure boundary effect and no other bifurcations such as saddle center bifurcations occur in this transition scenario. Truncated horseshoes actually arise in concrete potential scattering under suitable conditions. It is shown that a simple scattering model introduced earlier can realize this scenario in a certain parameter range (the "truncated sawshoe''). For this purpose, we solve the inverse scattering problem of finding the central potential associated to the sawshoe model. Furthermore, we review classification schemes for the transition to chaos of truncated horseshoes originating from symbolic dynamics and formal language theory and apply them to the truncated double horseshoe and the truncated sawshoe.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.165952
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  • 2
    Electronic Resource
    Electronic Resource
    Microdistribution of boron: particle-track images from samples of a Caledonian igneous complex (1989)
    Oxford, UK : Blackwell Publishing Ltd
    Terra nova 1 (1989), S. 0 
    Details
    ISSN: 1365-3121
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Geosciences
    Notes: 7Li recoil tracks in LexanR formed as a product of irradiation with thermal neutrons give an image of in sifu-microdistribution of boron in dioritic to granitic rocks of the Caledonian Ballachulish zoned complex and in a carbonate rock from its contact aureole. The images exhibit a polyphase incorporation of boron into primary and secondary minerals. The boron microdistribution is inhomogeneous. Isomorphous incorporation of boron into pyroxene and plagioclase during the main stage of crystallization cannot be established, because the boron distribution is blurred by secondary alteration. In contrast to the intracrystalline feature, the crystal interfaces are enriched in boron. Increased concentrations are also disclosed by overgrowths of primary crystals, exsolution lamellae in alkali feldspar and alteration rims of clinopyroxene. The highest amounts of boron in a siliceous dolomite marble of the contact aureole are found in the alteration products of olivine.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-3121.1989.tb00386.x
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  • 3
    Electronic Resource
    Electronic Resource
    Determination of Fluorine, Chlorine and Water in Eight USGS Reference Samples (1980)
    Oxford, UK : Blackwell Publishing Ltd
    Geostandards and geoanalytical research 4 (1980), S. 0 
    Details
    ISSN: 1751-908X
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Geosciences
    Notes: Eight reference samples from the U.S. Geological Survey have been analysed for their contents of F, Cl and water. After pyrolysis F was determined with an ion-selective electrode, Cl by colorimetry and water by Karl-Fischer titration.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1751-908X.1980.tb00271.x
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  • 4
    Electronic Resource
    Electronic Resource
    Fluorine in Some CII Biological Reference Samples and Fluorine Losses During Ashing (1980)
    Oxford, UK : Blackwell Publishing Ltd
    Geostandards and geoanalytical research 4 (1980), S. 0 
    Details
    ISSN: 1751-908X
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Geosciences
    Notes: Twelve different biostandards from the Inter-Institute Comittee for studying analytical techniques for leaves (CII) contain fluorine in the range of 6 to 37 ppm. It is known that biological samples from areas affected by fluorine emission may contain up to 1000 ppm of F or more. After keeping the reference samples for two hours at 500°C, weight losses between 67 and 78% are observed; the fluorine losses are between 40 and 85%. If conventional analytical techniques are used, an ashing procedure is necessary before the samples could be fused. By using pyrohydrolytical technique the ashing step is omitted and, hence, any loss of fluorine can be avoided.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1751-908X.1980.tb00272.x
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  • 5
    Electronic Resource
    Electronic Resource
    Determination of Fluorine and Total Water in Thirty-Three International Geochemical Reference Samples (1978)
    Oxford, UK : Blackwell Publishing Ltd
    Geostandards and geoanalytical research 2 (1978), S. 0 
    Details
    ISSN: 1751-908X
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Geosciences
    Notes: Thirty-three reference samples from the United States Geological Survey (USGS), Centre de Recherches Pétrographiques et Géochimiques (CRPG, France), Association Rationale de la Recherche Technique (ANRT, France), National Institute for Metallurgy (NIM, South Africa), Geotechnic Institute (GI, Austria), Mineralogical Institute of Basel and Bern (Switzerland), Zentrales Geolo-gisahes Institut (ZG1, DDR) and from the For-chungeinstitut der Zementinduatrie (Düsseldorf, GDF) were analysed for their fluorine and total water content. Fluorine was determined, after pyrohydrolysis, with an ion-selective electrode. Total water was determined, after pyrolysis, by Karl-Fischer titration. Our values, five determinations on each sample, are compared with the preferred values.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1751-908X.1978.tb00209.x
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  • 6
    Electronic Resource
    Electronic Resource
    Spectrophotometric determination of trace amounts of beryllium in silicate materials
    Amsterdam : Elsevier
    Talanta 31 (1984), S. 249-252 
    Details
    ISSN: 0039-9140
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/0039-9140(84)80271-4
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    Paper (German National Licenses)
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  • 7
    Electronic Resource
    Electronic Resource
    A simple model for chaotic scattering - I. Classical theory
    Amsterdam : Elsevier
    Physica D: Nonlinear Phenomena 35 (1989), S. 34-64 
    Details
    ISSN: 0167-2789
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Physics
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/0167-2789(89)90095-X
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  • 8
    Electronic Resource
    Electronic Resource
    A devil's staircase into chaotic scattering
    Amsterdam : Elsevier
    Physica D: Nonlinear Phenomena 50 (1991), S. 276-296 
    Details
    ISSN: 0167-2789
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Physics
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/0167-2789(91)90180-H
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  • 9
    Electronic Resource
    Electronic Resource
    Rudolf Schottenloher† (1944)
    Springer
    International journal of earth sciences 34 (1944), S. 779-780 
    Details
    ISSN: 1437-3262
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01803111
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  • 10
    Electronic Resource
    Electronic Resource
    Book reviews (1975)
    Springer
    Mineralium deposita 10 (1975), S. 412-412 
    Details
    ISSN: 1432-1866
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00207898
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