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  • 1
    Electronic Resource
    Electronic Resource
    Sequential Alterations in tRNA Population of 2-Acetylaminofluorene-Induced Hepatocyte Nodules
    Amsterdam : Elsevier
    Biochemical and Biophysical Research Communications 195 (1993), S. 1309-1313 
    Details
    ISSN: 0006-291X
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology , Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1006/bbrc.1993.2186
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  • 2
    Electronic Resource
    Electronic Resource
    DNA hypomethylation in ethionine-induced rat preneoplastic hepatocyte nodules
    Amsterdam : Elsevier
    Biochemical and Biophysical Research Communications 150 (1988), S. 739-744 
    Details
    ISSN: 0006-291X
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology , Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1016/0006-291X(88)90453-6
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  • 3
    Electronic Resource
    Electronic Resource
    Influence of magnetic quantization on the effective electron mass in Kane-type semiconductors (1991)
    Springer
    Il nuovo cimento della Società Italiana di Fisica 13 (1991), S. 867-880 
    Details
    ISSN: 0392-6737
    Keywords: Nonlocalized single-particle electronic states ; Electron density of states determinations
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Summary We study the effective electron mass at the Fermi level in Kane-type semiconductors on the basis of fourth order in effective mass theory and taking into account the interactions of the conduction electrons, heavy holes, light holes and split-off holes, respectively. The results obtained are then compared to those derived on the basis of the well-known three-band Kane model. It is found, takingn-Hg1−x Cd x Te as an example, that the effective electron mass at the Fermi level in accordance with fourth-order model depends on the Fermi energy, magnetic quantum number and the electron spin respectively due to the influence of band nonparabolicity only. The dependence of effective mass on electron spin is due to spin-orbit splitting parameter of the valence band in three-band Kane model and the Fermi energy due to band nonparabolicity in two-band Kane model. The same mass exhibits an oscillatory magnetic-field dependence for all the band models as expected since the origin of oscillations in the effective mass in nonparabolic compounds is the same as that of the Shubnikov-de Hass oscillations. In addition, the corresponding results for parabolic energy bands have been obtained from the generalized expressions under certain limiting conditions.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02457174
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  • 4
    Electronic Resource
    Electronic Resource
    On the thermoelectric power in quantum well of A 3 II B 2 V semiconductors in the presence of a classically large magnetic field (1992)
    Springer
    Il nuovo cimento della Società Italiana di Fisica 14 (1992), S. 63-73 
    Details
    ISSN: 0392-6737
    Keywords: Conductivity phenomena in semiconductors and insulators
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Summary An attempt is made to study the thermoelectric power of the carriers in quantum well of A 3 II B 2 V semiconductors, taking Cd3As2 quantum well as an example. It is found, on the basis of newly derived 2DE−k s dispersion relation by including various types of anisotropies in the energy spectrum that the thermoelectric power decreases with increasing electron concentration and decreasing film thickness respectively. In addition, the corresponding well-known results for bulk specimens of isotropic parabolic energy bands are also obtained from the expressions derived.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02455345
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  • 5
    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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  • 6
    Electronic Resource
    Electronic Resource
    On the effective electron mass in quantum well wires of ternary chalcopyrite semiconductors (1990)
    Springer
    Il nuovo cimento della Società Italiana di Fisica 12 (1990), S. 891-900 
    Details
    ISSN: 0392-6737
    Keywords: General theories and computational techniques (including many-body perturbation theory, density-functional theory, atomic sphere approximation methods, Fourier decomposition methods, etc.) ; Effective mass ; Electronic transport phenomena in thin films
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Summary An attempt is made to study effective electron mass in quantum well wires of ternary chalcopyrite semiconductors by formulating a new 1D dispersion relation, within the framework of thek·p formalism considering the anisotropies in the band parameters. It is found, taking quantum well wires ofn-CdGeAs2 as an example, that the effective Fermi level mass depends on the subband index due to the combined influence of crystal-field splitting parameter and the anisotropic spinorbit splitting parameters, respectively. The masses increase with increasing carrier degeneracy and decreasing film thickness, respectively. In addition, the well-known results for the corresponding parabolic energy bands have been derived as special cases of the generalized formulations.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02453036
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  • 7
    Electronic Resource
    Electronic Resource
    Influence of quantization of band states on the effective electron mass in quaternary alloys (1992)
    Springer
    Il nuovo cimento della Società Italiana di Fisica 14 (1992), S. 903-925 
    Details
    ISSN: 0392-6737
    Keywords: Nonlocalized single-particle electronic states ; Electron density of states determinations
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Summary An attempt is made to study the effective electron mass in quaternary alloys, taking a In1−x Ga x As y P1−y lattice matched to InP, by using the three-band Kane model under different physical conditions,e.g. bulk specimens, magnetic quantization, cross-field configuration, quantum well, electric-field-aided quantum well, magnetic-field-aided quantum well, quantum well under cross fields, quantum well wires, electric-field-aided quantum well wires, magnetic-field-aided quantum well wires and quantum well wires under cross fields by formulating the respective expressions. We have plotted the effective Fermi level mass with various physical variables under different conditions. In the presence of a quantizing magnetic field the effective mass depends on the spin splitting of Landau levels due to the spin-orbit splitting parameter of the valence bands. Under cross-field configuration and the various quantum confined low-dimensional systems, the effective masses depend on the respective quantum numbers in addition to the Fermi energies even for parabolic models because of the inherent features of such systems. In addition, the corresponding results for relatively wide-gap materials have also been obtained from our generalized formulations under certain limiting conditions.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02451675
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  • 8
    Electronic Resource
    Electronic Resource
    Numerical solution of a system of coupled non-linear integro-differential equations of Fredholm type (1971)
    Springer
    Aequationes mathematicae 7 (1971), S. 110-112 
    Details
    ISSN: 1420-8903
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01818701
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  • 9
    Electronic Resource
    Electronic Resource
    Numerical solution of a system of coupled non-linear integro-differential equations of Fredholm type (1971)
    Springer
    Aequationes mathematicae 7 (1971), S. 163-172 
    Details
    ISSN: 1420-8903
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics
    Notes: Abstract A method, based on a generalization of Runge-Kutta's method, is applied to a system of coupled integro-differenital equations of Fredholm type. It is shown that, under certain conditions, the related integral, containing an unknown variable, in each integro-differential equation can be approximated by a contraction operator, converging in the respective space concerned. Therefore they may be found by the method of iteration, starting from arbitrary values, and hence the given system may be solved, with a high degree of accuracy.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01818510
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  • 10
    Electronic Resource
    Electronic Resource
    A generalized method of solution of unsteady incompressible boundary layer theory (1972)
    Springer
    Pure and applied geophysics 93 (1972), S. 73-90 
    Details
    ISSN: 1420-9136
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Notes: Summary In the present paper, a generalized method of solution of the problem of incompressible, unsteady, laminar boundary layer flow with the main-stream velocity of the formX(x) N(t) is developed. In many practical problems, the external velocity potential may be given in the above separable form, from theoretical and or experimental considerations.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00875224
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