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  • Springer  (158)
  • 2020-2023
  • 1990-1994  (117)
  • 1970-1974  (41)
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  • 1
    Electronic Resource
    Electronic Resource
    Crystal structure of N-(4-nitrophenyl)-N-phenylsulfonamide (1993)
    Springer
    Journal of chemical crystallography 23 (1993), S. 513-517 
    Details
    ISSN: 1572-8854
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Notes: Abstract The crystal structure of N-(4-nitrophenyl)-N-phenylsulfonamide (C18H14N2O4S), a derivative of sulfonamide, has been determined by X-ray diffraction method using CuKα radiation. The compound crystallizes in the monoclinic space groupP21/n, witha=24.463(1),b=5.745(2),c=11.428(3)Å andβ=94.39(2)°. The structure was solved by direct methods and refined by full-matrix least squares to a finalR value of 0.045 with 3032 unique reflections. The dihedral angle between the substituents phenyl ring B and the phenyl A is 94.7(3)°. The S atom is in the usual distorted tetrahedral configuration.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01182529
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  • 2
    Electronic Resource
    Electronic Resource
    Adrenal corticosteroidogenesis after removal of ventral prostate gland (1991)
    Springer
    Cellular and molecular life sciences 47 (1991), S. 86-88 
    Details
    ISSN: 1420-9071
    Keywords: Prostatectomy ; adrenalΔ 5-3β-HSD ; serum corticosterone ; serum prolactin
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary Removal of the ventral prostate gland in adult male rats causes an increase in adrenal weight, and stimulation of adrenalΔ 5-3β-hydroxysteroid dehydrogenase activity along with elevation of serum levels of corticosterone and prolactin.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02041262
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  • 3
    Electronic Resource
    Electronic Resource
    Ionization of metastable H(2S) atom by electron and positron impact (1994)
    Springer
    Il nuovo cimento della Società Italiana di Fisica 16 (1994), S. 571-583 
    Details
    ISSN: 0392-6737
    Keywords: Atomic excitation and ionization by electron impact
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Summary Triple differential cross-section (TDCS) of hydrogen atom in its metastable (2S) state is studied theoretically by electron and positron impact for coplanar and asymmetric geometry. The final-state wave function in the present model satisfies the asymptotic boundary condition for asymmetric geometry (i.e. fork 1≫k 2). In the absence of experiment, present results are compared with other existing theoretical results. Apart from the double-peaked structure of the TDCS as in ground-state ionization, some interesting secondary structures are found, in conformity with other theories for ionization from 2S state.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02451656
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  • 4
    Electronic Resource
    Electronic Resource
    Transmission of elastic waves through a second-order fluid layer sandwiched between elastic media (1970)
    Springer
    Pure and applied geophysics 78 (1970), S. 42-47 
    Details
    ISSN: 1420-9136
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Notes: Summary The present paper is concerned with the transmission of elastic waves through a second-order fluid layer sandwiched between homogeneous elastic media having identical properties. It is concluded that the transmission ratio increases with the increasing absolute values of visco-elastic co-efficient and also with the wavelength of the wave transmitted.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00874771
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  • 5
    Electronic Resource
    Electronic Resource
    A new dual frequency moving source-receiverem unit (1971)
    Springer
    Pure and applied geophysics 92 (1971), S. 185-189 
    Details
    ISSN: 1420-9136
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Notes: Summary The paper describes a new portable highly sensitive dual-frequency electromagnetic prospecting unit designed for detailedem surveys based on moving source compensation method. Employing horizontal-horizontal coil profiling, the unit is capable of working on a source-receiver separation of 330 feet (ninety meters) on both frequencies of 500 cycles per sec and 1500 cycles per sec to an accuracy of ±1%. The presence of secondary field characterised by two related components ‘in-phase’ and ‘out-of-phase’ are measured accurately to define the conductor characteristics. An unique provision is made for compensating the phase-shifts in the presence of medium to poor conductors, such as conductive overburden or relatively disseminated ore mineralisation.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00875002
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  • 6
    Electronic Resource
    Electronic Resource
    Note on the torsional vibration of a thin beam of varying cross-section (1970)
    Springer
    Pure and applied geophysics 79 (1970), S. 18-21 
    Details
    ISSN: 1420-9136
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Notes: Summary In the present note the problem of torsional vibration of a bar in which the moment of inertia and the torsional rigidity are proportional to μ0 + μ1s, wheres is the spanwise co-ordinate and μ0 and μ1 are real numbers, has been considered.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00875473
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  • 7
    Electronic Resource
    Electronic Resource
    Elastic waves from a circular disc source (1972)
    Springer
    Pure and applied geophysics 95 (1972), S. 27-33 
    Details
    ISSN: 1420-9136
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Notes: Summary Elastic waves radiated by a finite circular disc source are compared for two models by treating it as the limit of an explosion inside a cavity in the form of a circular cylinder of small height or an oblate spheroid of small minor axis.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00878849
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  • 8
    Electronic Resource
    Electronic Resource
    Earth-flattening procedure for the propagation of Rayleigh wave (1972)
    Springer
    Pure and applied geophysics 96 (1972), S. 61-74 
    Details
    ISSN: 1420-9136
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Notes: Summary The propagation of Rayleigh waves in the earth is investigated in the period range of about 60 to 590 seconds. It has been shown that a set of earth-flattening approximations can be used to transform the heterogeneous spherical earth into plane-layered earth on which the dispersion computations by matrix method can be applied effectively to describe the fundamental mode of spheroidal oscillations involving the crust and the mantly only.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00875629
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  • 9
    Electronic Resource
    Electronic Resource
    Seismic waves due to storm over the sea: I (1972)
    Springer
    Pure and applied geophysics 101 (1972), S. 43-53 
    Details
    ISSN: 1420-9136
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Notes: Summary Elastic wave propagation problem has been studied in the composite medium — a gravitating liquid layer overlying an elastic half-space. Assuming moving normal pressure load on the free surface, an attempt has been made to study the order of disturbance on the earth's surface. In the discussion asymptotic values of the displacement, components have been considered for small values of the parameter.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00876773
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  • 10
    Electronic Resource
    Electronic Resource
    A simple analysis of the einstein relation in bismuth under different physical conditions (1993)
    Springer
    Il nuovo cimento della Società Italiana di Fisica 15 (1993), S. 39-58 
    Details
    ISSN: 0392-6737
    Keywords: Electron density of states determinations ; Effective mass andg factors ; Band structure of crystalline semiconductor compounds and insulators
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Summary We have studied the Einstein relation of the diffusivity-mobility ratio of the carriers in Bi in accordance with the McClure and Choi, the hybrid, the Cohen, the Lax and the ellipsoidal parabolic energy band models under magnetic quantization, cross-field configuration, quantum wells, electric-field-aided quantum wells, quantum wells under cross-field configuration, quantumwell wires, electrifield-aided quantum well wires and quantum well wires under cross-field configurations, respectively. The Einstein relation varies with various physical variables in different manners which are totally band structure dependent. We have also suggested an experimental method of determining the diffusivity-to-mobility ratio in degenerate materials having arbitrary dispersion laws.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02455849
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