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  • 2020-2023  (1)
  • 1995-1999  (22)
  • 1980-1984  (13)
  • 1935-1939  (8)
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  • 1
    Monographie ausleihbar
    Monographie ausleihbar
    Elasticity, fracture and flow : with engineering and geological applications (1983)
    London [u.a.] : Chapman and Hall
    Dazugehörige Bände
    Details Verfügbarkeit
    Signatur: M 92.0438
    In: Science paperbacks
    Materialart: Monographie ausleihbar
    Seiten: VIII, 268 S.
    Ausgabe: 3d ed.
    ISBN: 0412208903
    Serie: Science paperbacks
    Klassifikation:
    Petrophysik
    Sprache: Englisch
    Standort: Kompaktmagazin oben
    Zweigbibliothek: GFZ Bibliothek
    Standort Signatur Erwartet Verfügbarkeit
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    BUCH
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  • 2
    Digitale Medien
    Digitale Medien
    Structural Basis for the Catalytic Activity of Aspartate Aminotransferase K258H Lacking the Pyridoxal 5'-Phosphate-Binding Lysine Residue (1995)
    s.l. : American Chemical Society
    Biochemistry 34 (1995), S. 405-414 
    Details
    ISSN: 1520-4995
    Quelle: ACS Legacy Archives
    Thema: Biologie , Chemie und Pharmazie
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1021/bi00002a004
    Standort Signatur Erwartet Verfügbarkeit
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    Artikel (Nationallizenzen)
    Volltext
  • 3
    Digitale Medien
    Digitale Medien
    Damping of the oscillations of a permanent magnet levitating between high-Tc superconductors (1995)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 67 (1995), S. 2400-2402 
    Details
    ISSN: 1077-3118
    Quelle: AIP Digital Archive
    Thema: Physik
    Notizen: A permanent magnet (spherical shape, radius 100 μm) is levitating inside a superconducting parallel plate capacitor made of YBCO. Translational oscillations of the magnet at its resonance frequency (∼150 Hz) can be excited and detected. The damping of the oscillations is investigated as a function of temperature and oscillation amplitude. Close to Tc we observe a steep minimum of the damping. The data can be described by a linear frictional force which decreases near Tc, and a quadratic one which diverges at Tc. These frictional forces are attributed to flux flow phenomena in the high-Tc superconductor. © 1995 American Institute of Physics.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1063/1.114560
    Standort Signatur Erwartet Verfügbarkeit
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    Artikel (Nationallizenzen)
    Volltext
  • 4
    Digitale Medien
    Digitale Medien
    Earliest known proboscidean from early Eocene of north-west Africa (1984)
    [s.l.] : Nature Publishing Group
    Nature 308 (1984), S. 543-544 
    Details
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] The proboscidean remains are of an animal not exceeding a height of about 1 m, with a proportionally large head, and with graviportal limbs as in modern elephants. The skull is characterized by its considerable height, the presence of a conspicuous transversal frontomaxillary bulge, and an ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/308543a0
    Standort Signatur Erwartet Verfügbarkeit
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    Artikel (Nationallizenzen)
    Volltext
  • 5
    Digitale Medien
    Digitale Medien
    Collision age (1995)
    [s.l.] : Nature Publishing Group
    Nature 375 (1995), S. 286-286 
    Details
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] SIR - Beck et al.1 have reported new bio-geographical data, concluding that the collision of the Indian subcontinent with Asia was older than previously claimed. They suggested that the collision occurred between 66 and 55.5 Myr (million years) ago. However, palaeontological ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/375286c0
    Standort Signatur Erwartet Verfügbarkeit
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  • 6
    Digitale Medien
    Digitale Medien
    On Bremsstrahlung (1937)
    [s.l.] : Nature Publishing Group
    Nature 140 (1937), S. 108-109 
    Details
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] THE method previously used1 to calculate the cross-section for pair production by a beam of y-rays has been extended to deal with transitions of a Dirac electron between two states of positive energy in a Coulomb field. It is thus theoretically possible to obtain an exact ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/140108b0
    Standort Signatur Erwartet Verfügbarkeit
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    Artikel (Nationallizenzen)
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  • 7
    Digitale Medien
    Digitale Medien
    Production of Electron Pairs (1936)
    [s.l.] : Nature Publishing Group
    Nature 137 (1936), S. 781-782 
    Details
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] IN a recent paper1 we discussed the creation of positive-negative electron pairs by a beam of γ-rays traversing lead, with atomic number Z = 82. Results have since been obtained with Z = 50 and Z = 65 for γ-rays of energy hv = 3mc2. It is of interest to compare these with ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/137781b0
    Standort Signatur Erwartet Verfügbarkeit
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    Artikel (Nationallizenzen)
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  • 8
    Digitale Medien
    Digitale Medien
    VESTIBULAR HABITUATION IN MAN AND MONKEY DURING SINUSOIDAL ROTATION (1981)
    Oxford, UK : Blackwell Publishing Ltd
    Annals of the New York Academy of Sciences 374 (1981), S. 0 
    Details
    ISSN: 1749-6632
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Allgemeine Naturwissenschaft
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1749-6632.1981.tb30880.x
    Standort Signatur Erwartet Verfügbarkeit
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    Artikel (Nationallizenzen)
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  • 9
    Digitale Medien
    Digitale Medien
    Axi-symmetric bodies of equal material in contact under torsion or shift (1995)
    Springer
    Archive of applied mechanics 65 (1995), S. 478-487 
    Details
    ISSN: 1432-0681
    Schlagwort(e): Key words Contact problem of elasticity ; superposition ; flat punch solutions ; annular sliding ; stick area.
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Maschinenbau
    Notizen: Summary  Two axi-symmetric bodies are pressed together, so that their axes of symmetry coincide with the contact normal and the normal force is held constant. A small torque about the contact normal or a small tangential force is applied. For bodies of equal material, the normal and tangential stress states are uncoupled, and can be solved separately. The surfaces of the bodies are thought as a superposition of infinitesimal rigid flat-ended punches. Consequently, the normal stress distribution can be calculated as a summation of differential flat punch solutions. A formula results, which is identical with the solution of Green and Collins. After application of a torque an annular sliding area forms at the border of the contact area. For reasons of symmetry, the common displacement of the inner stick area must be a rigid body rotation. Similarly to the normal problem, the solution can be thought as a superposition of rigid punch rotations. The tangential solution can be derived analogically, in form of a superposition of rigid punch displacements. The present method also solves the problem of simultaneous normal and torsional or tangential loading with complete adhesion. As an example, Steuermann’s problem for polynomial surfaces of the form A 2 n r2 n is solved. The solutions for constant normal forces can be used as basic functions for loading histories with varying normal and tangential forces.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00835661
    Standort Signatur Erwartet Verfügbarkeit
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  • 10
    Digitale Medien
    Digitale Medien
    Uniaxial deformation of a random packing of particles (1999)
    Springer
    Archive of applied mechanics 69 (1999), S. 181-203 
    Details
    ISSN: 1432-0681
    Schlagwort(e): Key words granular material ; generalized Hertz contact ; elastic friction ; nonlinear elasticity
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Maschinenbau
    Notizen: Summary Mechanical behavior of dense packing spheres with small irregularities is investigated in this paper. A generalization of the hertzian contact model for surfaces of the form x k yields a normal contact force F n , which is proportional to ζ1+1/ k , with the normal displacement ζ. For oblique forces, the frictional force can be calculated, [10]. Different load cases are explained in detail. It is shown that the stress-strain curve during initial loading of the packing is identical with the force-displacement relation at the contact point, using an appropriate constant. The results for uniaxial loading, unloading and reloading are illustrated. As experimentally observed, the axial pressure in unloading is smaller than during loading, while the lateral pressure increases. The stress-strain relation is compared with well-known empirical relations of rock and soil mechanics, and the wave velocity for spherical irregularities agrees with earlier geomechanical theories for random packing of smooth spheres.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/s004190050213
    Standort Signatur Erwartet Verfügbarkeit
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    Artikel (Nationallizenzen)
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