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  • 1
    Electronic Resource
    Electronic Resource
    Coordinated benzyl radical derivatives: reaction of chromium(II) with complexes of pentaamminecobalt(III) and 4-cyano- and 4-carbamoylbenzyl bromide (1990)
    s.l. : American Chemical Society
    Inorganic chemistry 29 (1990), S. 1286-1289 
    Details
    ISSN: 1520-510X
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/ic00331a031
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Kinetics and mechanism of the copper(II)-catalyzed oxidation of lactic acid with chloramine T (CAT) in alkaline solutions (1983)
    s.l. : American Chemical Society
    Inorganic chemistry 22 (1983), S. 1393-1395 
    Details
    ISSN: 1520-510X
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/ic00151a026
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Formation and reactions of an organochromium(III)-acetamido-pentaamminecobalt(III) complex (1988)
    s.l. : American Chemical Society
    Inorganic chemistry 27 (1988), S. 168-172 
    Details
    ISSN: 1520-510X
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/ic00274a034
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Magnetic properties of some tertiary basalts from West Greenland (1976)
    Springer
    Pure and applied geophysics 114 (1976), S. 195-206 
    Details
    ISSN: 1420-9136
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Notes: Summary Measurements of bulk magnetic properties, including the natural remanent magnetization (NRM), susceptibility and the Königsberger ratio, on over 250 samples of Tertiary basalts from Disko and Nûgssuaq, West Greenland are reported. The NRM intensities in basalts (geometric mean value 3.3 A/m in SI units) were on average three to four times as large as the induced magnetization intensities. The susceptibilities (geometric mean value 2.1×10−2 SI units) were much more uniform than the NRM intensities. In the majority of samples, the NRM was predominantly of reverse (R) polarity, but samples from a few sites showed a remanence of normal (N) polarity. The NRM of both polarity classes (N, R) was very stable against alternating field (AF) demagnetization with median destructive fields of the order of 20,000–30,000 A/m (250–350 Oe), comparable to those for many stable continental and oceanic basalts. The viscous remanence intensity, as studied by storage tests on some specimens, was found to be an insignificant fraction of the original NRM, except in few cases. The low field hysteresis loops (Rayleigh loops) were studied for some specimens. A qualitative association was noted between wide hysteresis loop and relatively low AF stability, but no correlation was apparent between the loop type and the Königsberger ratio (Q n) of a specimen.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00878945
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  • 5
    Electronic Resource
    Electronic Resource
    Digital computation of gravitational and magnetic anomalies and their derivatives for two-dimensional bodies of arbitrary shape (1966)
    Springer
    Pure and applied geophysics 64 (1966), S. 14-18 
    Details
    ISSN: 1420-9136
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Notes: Summary A simple method is presented for computing the gravity and magnetic profiles across two-dimensional bodies of arbitrary shape. The computer programme makes use of expressions for the attraction caused by an infinitely long sheet and it takes only a few seconds to compute a profile both for gravity and magnetic anomalies and their vertical and horizontal derivatives. Accuracy of the method is shown to be as good as that of graticules and owing to the use of simpler formulae, the method appears to be faster than the method of polygons.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00875526
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  • 6
    Electronic Resource
    Electronic Resource
    High speed gravity and magnetic calculations of uniform cylindrical bodies of arbitrary cross-section and finite length (1966)
    Springer
    Pure and applied geophysics 65 (1966), S. 48-53 
    Details
    ISSN: 1420-9136
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Notes: Summary A simple method is designed for programming the gravity and magnetic calculations of a right circular cylinder (vertical or horizontal) by treating it as a combination of thin rectangular slabs. It takes only a few seconds to compute a profile of each kind and the accuracy is comparable to that obtained by using exact expressions (involving complete elliptic integrals) instead. The method is also applicable to cylindrical bodies of arbitrary cross-section and could as well be used for rapid computation of derivatives of gravity and magnetic anomalies.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00874953
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  • 7
    Electronic Resource
    Electronic Resource
    Nomograms for determining the gravity attraction of a right rectangular prism (1972)
    Springer
    Pure and applied geophysics 96 (1972), S. 28-36 
    Details
    ISSN: 1420-9136
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Description / Table of Contents: Zusammenfassung Das Quader ist eines der Modelle, das häufig als Annäherung vieler geologischer Körper und bei der Berechnung topographischer und isostatischer Effekte angewandt wird. Die analytische Formel für die Schweresanziehung eines aufrechten Quaders enthält 24 lange Formeln, diezwar für elektronische Rechenautomat aber nicht für Berechnungen von Hand geeignet sind. Es bestand deshalb ein Bedarf für ein einfaches graphisches Mittel, welch eine rasche Abschätzung des Schwereseffektes eines Block-models ermöglichen kann, insbesondere für kleinere Aufgaben mit nur wenigen Berechnungspunkten. Dem Verfasser sind noch keine solche Diagramme bis jetzt bekannt. Die Nomogramme dieser Abhandlung sollten diesen Bedarf erfüllen; an Hand dieses Hilfsmittels sollte es möglich sein in wenigen Minuten die Schweresanziehung für jeden Punkt ausserhalb oder auf der Oberfläche eines begrenzten Quaders zu berechnen.
    Notes: Summary A rectangular prism is one of the versatile models which is often used to approximate many geological features and also for calculation of topographic and isostatic effects. The analytical formula for the gravity attraction of a right rectangular prism contains 24 lengthy expressions which though compatible for use on an electronic computer, are rather prohibitive for hand computations. Some need has, therefore, been felt for designing a simple graphical device to enable a fairly quick estimate of the gravity effect of a rectangular block model, especially for small-scale jobs involving only a few computation points. In so far as is known to the author, no such graphical device has been made available to the geophysicists. The set of nomograms presented in this communication should fulfill this long felt need. With this aid now it is possible to compute in only a few minutes the gravity attraction of a finite rectangular prism at a point lying outside or on the prism surface.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00875625
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  • 8
    Electronic Resource
    Electronic Resource
    Rapid computation of magnetic anomalies and demagnetization effects caused by bodies of arbitrary shape (1966)
    Springer
    Pure and applied geophysics 64 (1966), S. 89-109 
    Details
    ISSN: 1420-9136
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Description / Table of Contents: Zusammenfassung Unter Anwendung der Formeln für das Feld eines Quaders wird eine Methode entwickelt um die durch einen Körper beliebiger Form erzeugten magnetischen Anomalien mit Hilfe eines Rechenautomaten zu berechnen. Umgekehrt kann die Methode verwendet werden, um aus den beobachteten Anomalien den Magnetisierungsvektor zu bestimmen. An einem Beispiel wird die Anwendbarkeit, die Genauigkeit und die Schnelligkeit der Methode erläutert. Die Methode kann auch für die Berechnung von magnetischen Terraineffekten verwendet werden. Zudem wird eine neue Methode dargelegt, welche eine rasche Berechnung des Entmagnetisierungseffektes eines Körpers beliebiger Gestalt und inhomogener Magnetisierung ermöglicht. Anwendbarkeit und Genauigkeit der Methode werden besprochen. Die Methode wurde verwendet, um den Einfluss der Suszeptibilität auf die Inhomogenität der induzierten Magnetisierung in einem Würfel zu untersuchen. Für Körper beliebiger Form mit kleiner Suszeptibilität wls neuer Begriff der mittlere Entmagnetisierungsfaktor eingeführt. Mittlere Entmagnetisierungsfaktoren für eine zylindrische Probe werden tabelliert.
    Notes: Summary With the aid of formulae derived for the field caused by a finite rectangular prism, a machine method is developed for rapid computation of magnetic anomalies due to a body of any shape. Conversely, the method could be utilised for determination of the magnetization vector from the observed anomalies. An example is given to demonstrate the applicability, accuracy and speed of the method. The method is shown to be suitable also for the evaluation of magnetic terrain effects. In addition, a new method is presented which enables high speed calculation of demagnetization effect caused by a body of arbitrary shape where the magnetization in general may be inhomogeneous. Applicability and accuracy of the method are discussed. The method is applied to study the effect of susceptibility on inhomogeneity of the induced magnetization in a cube specimen. For a body of any shape with low susceptibility, a new concept of average demagnetization factor is introduced. Average demagnetization factors so calculated for a cylindrical specimen are tabulated.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00875535
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  • 9
    Electronic Resource
    Electronic Resource
    Application of A. C. demagnetization to investigate the stability of rock magnetization caused by lightning currents (1966)
    Springer
    Pure and applied geophysics 64 (1966), S. 110-120 
    Details
    ISSN: 1420-9136
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Description / Table of Contents: Zusammenfassung Es wird eine Apparatur beschrieben die es ermöglicht, Gesteinsproben mit Hilfe von Wechselfeldern schrittweise zu Entmagnetisieren. Dabei werden die unstabilen Komponenten der Magnetisierung entfernt, während ein Teil der stabilen Magnetisierung erhalten bleibt. Die Apparatur wurde verwendet, um die Stabilität der in den Gesteinsproben durch künstliche Beblitzung erzeugten Magnetisierung zu untersuchen. Es wird gezeigt, dass die durch starke Blitze erzeugte remanente Magnetisierung recht stabil sein kann und dass es in gewissen Fällen selbst Wechselfeldern mit Feldstärken bis zu 1700 Oe nicht gelingt, diese harte Magnetisierung zum Verschwinden zu bringen. Möglichkeiten, um den störenden Einfluss der Blitze bei päleomagnetischen Untersuchungen zu vermeiden, werden besprochen.
    Notes: Summary An apparatus is described which enables progressive demagnetization of rock specimens under alternating fields in order to remove the unstable components of magnetization while retaining a measurable fraction of the stable component. The apparatus is utilized to study the stability of magnetization created in rock specimens by artificial lightning currents. It is shown that the remanent magnetization due to strong lightning currents could be fairly stable and in certain cases peak a. c. fields of intensity as high as 1700 Oe may fail to destroy completely the effect of this hard component. Possible means for avoiding the ‘magnetic noise’ effect of lightning on paleomagnetic investigations are discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00875536
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  • 10
    Electronic Resource
    Electronic Resource
    Studies on the family hemiuridae (Trematoda: Digenea), with a description of a new genus from marine fish of Indian waters (1973)
    Springer
    Marine biology 19 (1973), S. 89-91 
    Details
    ISSN: 1432-1793
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract A new digenetic trematode, collected 1969–1970 at Ratnagiri (India) from the marine eel Leptocephalus conger, is described as Indostomachicola kinnei n. g., n. sp. The new genus differs from Stomachicola Yamaguti, 1934 and Allostomachicola Yamaguti, 1958 in many characteristics. The new species is characterized by an unlobed ovary, absence of receptaculum seminis, and presence of post-acetabular seminal vesicle and a ventral pit.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00355424
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    Paper (German National Licenses)
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