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  • 1
    Electronic Resource
    Electronic Resource
    On the propagation of wave from a cylindrical cavity (1970)
    Springer
    Pure and applied geophysics 78 (1970), S. 96-99 
    Details
    ISSN: 1420-9136
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Notes: Summary This paper discusses the disturbance produced in an infinite layer of non-homogeneous elastic material characterised by ϱ=ϱ0 γn and μ=μ0γn(n〉0) where ϱ and μ are the density and shear modulus respectively of the material, due to periodic torsional force applied on the wall of a cylindrical hole in the layer. The variation of the displacement component with the radius vector is shown graphically and compared with the corresponding homogeneous case.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00874777
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    On the propagation of wave from a cylindrical cavity, II (1970)
    Springer
    Pure and applied geophysics 83 (1970), S. 5-8 
    Details
    ISSN: 1420-9136
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Notes: Summary We have discussed in the paper the disturbance produced in an infinite layer of nonhomogeneous elastic material characterised by ϱ = ϱ0 Z and μ = μ0 Z where ϱ and μ are the density and shear modulus respectively of the material due to periodic torsional force applied on the wall of a cylindrical hole in the layer. The variation of the displacement component with the depth of the layer is shown graphically and compared with the corresponding homogeneous case.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00875091
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  • 3
    Electronic Resource
    Electronic Resource
    The effects of couple-stresses on the propagation of waves from cylindrical cavity (1972)
    Springer
    Pure and applied geophysics 96 (1972), S. 45-51 
    Details
    ISSN: 1420-9136
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Notes: Summary In the present paper, the wave propagation from a cylindrical cavity in an infinite medium exhibiting couple-stress is considered. The variations of Hoop-stress on the cavity surface are investigated for different couple-stress material moduli and wave lengths. Significant differences are found when compared with those based on classical theory of elasticity.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00875627
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  • 4
    Electronic Resource
    Electronic Resource
    Catalytic Synthesis of Lactic Acid from Acetaldehyde, Carbon Monoxide, and Water (1970)
    s.l. : American Chemical Society
    Industrial and engineering chemistry 9 (1970), S. 92-95 
    Details
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/i360033a018
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  • 5
    Electronic Resource
    Electronic Resource
    Note on couple-stresses in a halfplane produced by moving loads (1970)
    Springer
    Acta mechanica 9 (1970), S. 346-353 
    Details
    ISSN: 1619-6937
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Description / Table of Contents: Zusammenfassung Die Spannungsverteilung in einer Halbebene zufolge einer bewegten Linienlast an der Oberfläche wird mittels der linearen Theorie der Momenten-spannungen untersucht. Es wird angenommen, daß sich die Last mit kleinerer Geschwindigkeit bewegt, als die Longitudinal-und Transversalwellen des elastischen Mediums (Unterschall). Es zeigt sich, daß der Einfluß der Momentenspannungen von der Lastgeschwindigkeit, dem Momentenspannungsparameter und derPoisson-zahl abhängt.
    Notes: Summary Linear couple stress theory has been applied to investigate the stress distribution in a half plane due to a moving line load on the surface. It is assumed that the load is moving slower than both the longitudinal and transverse wave speeds of the elastic media (subsonic case). It is found that the couple stress effect depends on the speed of the moving load, the couple-stress parameter, and thePoisson's ratio.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01179832
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  • 6
    Electronic Resource
    Electronic Resource
    Dependence of the knock-on electron cross-section on muon energy in high, medium and low Z elements (1971)
    Springer
    The European physical journal 242 (1971), S. 304-307 
    Details
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Using the recent experimental results of various authors the dependence of the knock-on electron cross-section on primary muon energy has been studied in detail. It is found that the knock-on production cross-section increases with primary muon energy upto at least 32 GeV in accordance with Bhabha's theory for energy transfers greater than 15 MeV.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01396979
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  • 7
    Electronic Resource
    Electronic Resource
    A simple approach to intervalley transfer in electric field (1972)
    Springer
    Czechoslovak journal of physics 22 (1972), S. 1302-1304 
    Details
    ISSN: 1572-9486
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Intervalley population transfer as a function of electric field has been investigated in a simple way assuming a Davydov type distribution. It has been shown that the current-voltage characteristics contain a region of negative differential conductivity and the threshold field is ∼3·5 kV/cm.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01689910
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  • 8
    Electronic Resource
    Electronic Resource
    Friedmann universes containing wave fields (1974)
    Springer
    General relativity and gravitation 5 (1974), S. 359-370 
    Details
    ISSN: 1572-9532
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract In this paper the Friedmann universes containing(i) a massless real scalar field,(ii) a massive real scalar field,(iii) electromagnetic fields,(iv) the combined massive complex scalar and electromagnetic fields are investigated. In(i) the field has to be either purely spatial or else purely temporal and the latter case is completely solved. Similarly in(ii) the purely time-dependent case has been reduced to a single fourth order ordinary differential equation. In this case graphs of the numerical solutions have been exhibited. In(iii) as expected, no non-trivial solution exists. In(iv) all possible cases are studied. In case the complex wave function is a product of two non-constant functions, i.e. ψ=ξ(r)τ(t), there exists no solution. In the subcase gx(r)=ξ*(r)=constant, ¦τ(t)¦=constant the problem is completely solved. In the subcase ξ(r)=ξ*(r)=constant and ¦τ(t)¦ is non-constant, the system of equations boil down to the same fourth order ordinary differential equation as mentioned before. In the last two sub-cases, the time-dependent wave field carries electric charge density which, strangely enough, is decoupled from the electromagnetic fields.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00763031
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  • 9
    Electronic Resource
    Electronic Resource
    On the generation of new metrics containing arbitrary functions (1974)
    Springer
    General relativity and gravitation 5 (1974), S. 459-465 
    Details
    ISSN: 1572-9532
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract We present simple methods by which certain solutions of the Einstein vacuum equation (and some other equations) can be used to generate further solutions of these equations. In some cases the new solutions admit a smaller number of metric automorphisms than the original ones and are, in this sense, more general.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00763040
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  • 10
    Electronic Resource
    Electronic Resource
    Thermal stresses in a thin circular disc of orthotropic material due to an instantaneous point heat source (1972)
    Springer
    Acta mechanica 13 (1972), S. 205-214 
    Details
    ISSN: 1619-6937
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Description / Table of Contents: Zusammenfassung In dieser Arbeit wurde das instationäre ebene Wärmespannungsproblem einer Kreisscheibe aus orthotropem Material zufolge einer punktförmigen instantanen Wärmequelle untersucht. Die Veränderung von σθθ über die Zeit für verschiedene Radien ist graphisch dargestellt und wird mit dem isotropen Fall verglichen.
    Notes: Summary In this paper, we have analysed the transient plane thermal stress problem of a circular disc of orthotropic material with instantaneous point heat source. The variation of σθθ with time along different radius vectors is exhibited graphically and compared with that of the isotropic case.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01586793
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