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  • 11
    Electronic Resource
    Electronic Resource
    Springer
    Virchows Archiv 193 (1908), S. 109-121 
    ISSN: 1432-2307
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Type of Medium: Electronic Resource
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  • 12
    Electronic Resource
    Electronic Resource
    Springer
    Monatshefte für Chemie 22 (1901), S. 315-334 
    ISSN: 1434-4475
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 13
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 111 (1978), S. 3904-3911 
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Syntheses with Compounds R3M — Hg — MR3, XVI: (Silylamino) methyl Radicals and Their DimersSchiff bases ArRC = NR′ 1 and 8 react with (Me3Si)2Hg to give the radicals ArRĊ — NR′SiMe3 3 and 9, resp., smoothly and spontaneously upon heating or irradiation. The latter are in equilibrium with the corresponding dimers, the 1,2-diaminoethanes 4 and 10. The equilibria depend strongly on the steric strain in the dimers. Finally, with R = Me the disproportionation products 6 and 7 are isolated quantitatively. ESR data of 3 and 9 are given. They are influenced by the bulkiness of the substituents at the C and N atoms.
    Notes: Schiffsche Basen ArRC = NR′ 1 bzw. 8 bilden mit (Me3Si)2Hg beim Erwärmen oder Belichten spontan und glatt die Radikale ArRC· — NR′SiMe3 3 bzw. 9. Diese stehen im Gleichgewicht mit den entsprechenden Dimeren, den 1,2-Diaminoethanen 4 bzw. 10. Die Gleichgewichte sind stark abhängig vom sterischen Druck in den Dimeren. Mit R = Me isoliert man jedoch schließlich quantitativ die Produkte der Disproportionierung 6 und 7. ESR-Daten von 3 und 9 werden angegeben. Sie werden beeinflußt von der Raumerfüllung am C- und N-Atom.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
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  • 14
    Publication Date: 2022-07-08
    Description: The study of textural, structural, chemical, and physical properties of fine-grained recent marine sediments leads to the conclusion that only a few compositional factors are responsible for significant changes in mass physical characteristics in the upper meters below sea bottom. Fossil-induced porosity (text fig. 6) increases water content and liquid limit. It also seems to have partially influenced the plastic limit and plasticity index of calcareous sandy silts from the Red Sea and the western Gulf of Aden so that they become similar to the montmorillonite rich prodelta clays from the Nile Delta. Diagrams based on liquid limit and plasticity loose their original meaning in these cases (text fig. 7 a). Activity of sediments rich in microorganisms can be higher than that of montmorillonitic clay (text fig. 7b). The shear strength-depth relationship of normally consolidated sediments (text fig. 8 a) is surprisingly little influenced by changes in sand or clay content and clay mineralogy. Only high lime content, submarine erosion and beginning cementation increase the strength considerably (part of curves in text fig. 8 b ). Erosional disconformities near the present surface can be deduced from the strength-depth curve when as little as 1 or 2 m sediment have been removed (text fig. 9). Flat or irregular strength-depth curves (text fig. 8 b, curves B and GO) indicate beginning cementation and probably discontinuous sedimentation, provided the composition of the material remains in some degree constant. In our samples diagenetic pyrite, but no recristallisation of carbonates could be detected under the microscope. Underconsolidation and excess pore-water pressure, factors which tend to foster submarine slides, mud lumps, and diapiric folding, seem to be restricted to areas with mainly rapidly deposited, homogeneous or layered sediments. But where an abundance of burrowing organisms increases the vertical permeability of the sediment, normal consolidation and stable deposits are to be expected, at least in the upper meters below the present surface. According to 14C-determinations on calcareous microorganisms the rate of deposition of the investigated sediments seems to range from 26 to 167 cm per 1000 years.
    Type: Article , PeerReviewed
    Format: text
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  • 15
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    Springer
    In:  Senckenbergiana Lethaea, 48 (3/4). pp. 359-379.
    Publication Date: 2017-01-24
    Description: Am Süd-Ausgang des Roten Meeres entstehen unter idealen Wachstumsbedingungen fast reine Korallen-Saumriffe, die als dünne Platten oft kilometerweit mit einer Geschwindigkeit von Zentimetern pro Jahr auf ihrem Schutt von der Küste horizontal gegen das Meer vorwachsen. Aufgetauchte Saumrifte, ein flacher Bootskanal oder abradierte Riffoberflächen weisen auf pleistozäne und jüngere Meeresspiegelschwankungen bzw. tektonische Verstellungen hin. Von einer gewissen Breite an bilden sich auf den Riffen Inseln in Form langgestreckter Rücken aus Korallensand, hinter denen sich stellenweise Mangrove ansiedelt oder Salze in flachen Lagunen abscheiden. Schließlich kann der Strand auf das Saumriff vorverlegt und dieses in die Küstenebene einbezogen werden.
    Type: Article , PeerReviewed
    Format: text
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  • 16
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    Senckenberg Gesellschaft für Naturforschung
    In:  Senckenbergiana Maritima, 19 (3). pp. 195-222.
    Publication Date: 2020-06-17
    Description: The sediment budget for the Kieler Bucht, a semi-enclosed sea formed in a relatively homogeneous lithology of Pleistocene till in the Western Baltic, has been refined by utilising new data from independent approaches. Analysis of the detailed network of sub-bottom profiles from the "POSEIDON 23" cruise allowed clear definition of the postglacial muddy sediment deposits. Estimation of sand deposited is based on the pattern of surficial sediment distribution. Volumes of till eroded are calculated from survey, cartographic, and erosion data of the cliffs and submarine platforms around the bay. Best estimates for the sediment balance are an erosion of 2.6-2.9 X 109 m3 of till from the coast and sea floor, resulting in a sand production of 0.8-0.9 X 109 m3 and a deposition of about 5.5 X 109 m3 of muddy sediment. Congruence of various models of till eroded in relation to measured volume of sand and muddy deposits, suggests that the sediment budget is in balance, and that less than 10% of the muddy deposits need to be accounted for by invoking transportation into the Bucht.
    Type: Article , PeerReviewed
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  • 17
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    GPI
    In:  GPI, Kiel, 13 pp.
    Publication Date: 2015-07-20
    Type: Report , NonPeerReviewed
    Format: text
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  • 18
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    Geologisch-Paläontologisches Institut der Universität Kiel
    In:  Geologisch-Paläontologisches Institut der Universität Kiel, Kiel, 17 pp.
    Publication Date: 2015-02-04
    Type: Report , NonPeerReviewed
    Format: text
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  • 19
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    Geologisch-Paläontologisches Institut und Museum der Universität Kiel
    In:  Geologisch-Paläontologisches Institut und Museum der Universität Kiel, Kiel, 20 pp.
    Publication Date: 2015-03-12
    Type: Report , NonPeerReviewed
    Format: text
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  • 20
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    Geologisch-Paläontologisches Institut und Museum der Univ. Kiel
    In:  Geologisch-Paläontologisches Institut und Museum der Univ. Kiel, Kiel, 9 pp.
    Publication Date: 2015-06-11
    Type: Report , NonPeerReviewed
    Format: text
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