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  • 1
    Electronic Resource
    Electronic Resource
    Far-field displacements from a rectangular fault with two rupture velocities (1980)
    Springer
    Pure and applied geophysics 118 (1980), S. 990-1006 
    Details
    ISSN: 1420-9136
    Keywords: Earthquake source ; Rupture model ; Rupture velocity
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Notes: Summary Analytic expressions for the far-field displacement both in the time and the frequency domains are obtained for the kinematic earthquake model of a rupture which nucleates at a point, grows in the form of a rectangle and stops at a later time. The spectra ofS andP waves are analyzed with the object of determining fault dimensions from the corner frequencies. The approach by which the solution of the present problem is obtained can be extended to get closed form solutions to the problem of rupture front expanding in the form of a polygon and terminating over a fault area which has the form of another polygon.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01593045
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  • 2
    Electronic Resource
    Electronic Resource
    On the structure of Yang–Mills fields in compactified Minkowski space (1994)
    College Park, Md. : American Institute of Physics (AIP)
    Journal of Mathematical Physics 35 (1994), S. 5642-5659 
    Details
    ISSN: 1089-7658
    Source: AIP Digital Archive
    Topics: Mathematics , Physics
    Notes: In this work the Yang–Mills functional with gauge group SU(2) in compactified Minkowski space is reduced to a mechanical Lagrangian which enables one to find new classes of exact dual and nonself-dual solutions. The technique used in the reduction allows a simple interpretation of meron-type solutions. The formalism is then used to produce a good simple analytic approximation to static solutions of Skyrme's field equation, relevant to low energy hadronic interactions.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.530701
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  • 3
    Electronic Resource
    Electronic Resource
    Reactions of [Mo(N"2)"2(dppe)"2] with organic isocyanates
    Amsterdam : Elsevier
    Journal of Organometallic Chemistry 231 (1982), S. C6-C8 
    Details
    ISSN: 0022-328X
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/S0022-328X(00)89232-3
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  • 4
    Electronic Resource
    Electronic Resource
    Reaction-diffusion equations in one dimension: particular solutions and relaxation
    Amsterdam : Elsevier
    Physica D: Nonlinear Phenomena 57 (1992), S. 249-266 
    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(92)90002-5
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  • 5
    Electronic Resource
    Electronic Resource
    On the number of solitons for the intermediate long wave equation
    Amsterdam : Elsevier
    Wave Motion 20 (1994), S. 131-142 
    Details
    ISSN: 0165-2125
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Geosciences , Physics
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/0165-2125(94)90037-X
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  • 6
    Electronic Resource
    Electronic Resource
    A synaptic model for the kindling effect
    Amsterdam : Elsevier
    Journal of Theoretical Biology 120 (1986), S. 285-302 
    Details
    ISSN: 0022-5193
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1016/S0022-5193(86)80201-6
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  • 7
    Electronic Resource
    Electronic Resource
    Shelf to basin transition in the Cambrian-Lower ordovician of Sardinia (Italy) (1987)
    Springer
    International journal of earth sciences 76 (1987), S. 827-836 
    Details
    ISSN: 1437-3262
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences
    Description / Table of Contents: Abstract In southern and central Sardinia two different Cambrian-Lower Ordovician sedimentary belts occur. The former is exposed in southwestern Sardinia (Iglesiente and Sulcis), and is characterized by shallow-marine siliciclastic and carbonate sediments settled on a continental shelf with lowangle morphology. The latter, exposed in the Nappe Zone (central and southeastern Sardinia), consists of a thick monotonous sequence of siliciclastic deposits settled in a deeper-water basin. The comparative analysis of the sequences and their palinspastic reconstruction lead to recognize an inner and outer shelf respectively in Iglesiente and in northern Sulcis, a transition to the basin in eastern and southern Sulcis and a basin in the eastern areas of Sardinia (Nappe Zone).
    Abstract: Résumé En Sardaigne méridionale et centrale, on connaît deux ensembles sédimentaires d'âge cambro-ordovicien. Le premier, exposé dans la partie sud-occidentale de l'île (secteurs de l'Iglesiente et du Sulcis), est caractérisé par des sédiments carbonatés et terrigènes déposés sur un shelf continental morphologiquement régulier et à inclinaison faible. Le second, exposé dans la »zone des nappes« (Sardaigne orientale) est composé d'une séquence terrigène monotone déposée dans un bassin plus profond. L'analyse comparée des séquences et les reconstructions palynspastiques conduisent à reconnaître plusieurs domaines paléogéographiques: un shelf interne dans l'Iglesiente, un shelf externe dans le Sulcis septentrional, une transition vers le bassin profond dans le sud et l'est du Sulcis et ce bassin profond dans la Sardaigne orientale (»zones des nappes«).
    Notes: Zusammenfassung In Süd- und Zentral-Sardinien gibt es zwei unterschiedliche Sedimentgürtel im Kambrium bis Unterordovizium. Der ältere ist in Südwest-Sardinien (Iglesiente und Sulcis) aufgeschlossen. Er ist aus flachmarinen siliziklastischen und karbonatischen Sedimenten eines kontinentalen Schelfes mit flachem Relief aufgebaut. Der zweite Sedimentgürtel, aufgeschlossen in der Decken-Zone (Zentral- und SE-Sardinien) besteht aus einer mächtigen einheitlichen Folge von siliziklastischen Ablagerungen eines tieferen Beckens. Die vergleichende Analyse der Folgen und die palinspastische Rekonstruktion läßt einen inneren und einen äußeren Schelf im Gebiet von Iglesiente und nördlichen Sulcis erkennen, einen Übergang zum Becken im östlichen und südlichen Sulcis sowie ein Becken im östlichen Sardinien (Decken-Zone).
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01821066
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  • 8
    Electronic Resource
    Electronic Resource
    Phosphite complexes derived from [M(N(2)2(dppe)2], M=Mo or W (1982)
    Springer
    Transition metal chemistry 7 (1982), S. 188-189 
    Details
    ISSN: 1572-901X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01035840
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  • 9
    Electronic Resource
    Electronic Resource
    Some nonlinear effects on Love waves (1988)
    Springer
    Journal of elasticity 20 (1988), S. 143-159 
    Details
    ISSN: 1573-2681
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00040909
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  • 10
    Electronic Resource
    Electronic Resource
    The nitrogen cycle in shallow water sediment systems of rice fields. Part 1: The denitrification process (1988)
    Springer
    Hydrobiologia 159 (1988), S. 189-202 
    Details
    ISSN: 1573-5117
    Keywords: denitrification ; N-cycle ; rice-fields ; Camargue ; acetylene inhibition
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Denitrification causes important losses of N-fertilizer in rice-fields, where high temperature and high production of organic matter favour denitrification losses. Two techniques have been used to quantify the denitrification losses: the 15N technique, which can be used to quantify the amount finally incorporated, and the acetylyne inhibition technique which is a direct measure of the quantities lost. Both techniques were applied in enclosures (diameter = 44 cm) in the field while moreover bio-assays in 3 l glass beakers were carried out. In all experiments where nitrate was added we found a rapid decrease of nitrate; usually about 30–50% of the nitrate that disappeared was recovered as N2O. As in one experiment, in which we measured the N2O disappearance rate as well, the N2O itself decreased at a rather constant rate of 20% per day, a correction must be made for this N2O decrease in the calculations of the nitrate disappearance rate. Although we have only one series in which the decrease of N2O was measured, the mathematical analysis indicates that as much as 80% of the N-fertilizer is actually lost. This figure is in full agreement with the 15N experiments; if the 15N was applied early only about 7% was recovered in soil and plants, while if it was applied later (after 7 weeks) about 20% was incorporated. Denitrification rate could be fitted on an negative exponential regression line; the rate constant increased during the summer. It is suggested that organic matter caused this increase. During denitrification considerable quantities of nitrite appear, which later on disappear again by processes still unknown; the nature of the available organic matter may be important for this nitrite production. With N-serve we tried to inhibit NH3 oxidation. In this way we tried to prevent the considerable N losses and to demonstrate that the nitrite produced in our experiments was not derived from NH3 oxidation. N-serve, however, had very little influence. It is probably inactivated by absorption onto the sediments. From these results it is suggested that the efficiency of N-application may be considerably increased by using low doses of N-fertilizer, but applied late in the growing season, e.g. 7 weeks after sowing. This favours environmental protection as well.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00014727
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