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  • Springer  (12)
  • American Meteorological Society  (2)
  • American Association of Petroleum Geologists (AAPG)
  • Copernicus
  • 2005-2009
  • 2000-2004
  • 1975-1979  (14)
  • 1979  (5)
  • 1978  (9)
Collection
Publisher
Years
  • 2005-2009
  • 2000-2004
  • 1975-1979  (14)
Year
  • 1
    Electronic Resource
    Electronic Resource
    Analysis of the transient behavior of kidney models (1978)
    Springer
    Bulletin of mathematical biology 40 (1978), S. 211-221 
    Details
    ISSN: 1522-9602
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Mathematics
    Notes: Abstract Non-steady-state equations for kidney models are stated. General conservation relations for these equations are derived. Transient equations for the central core model of the renal medulla are developed. Solution of the equations by Laplace transform methods for time invariant volume flows is discussed. The general theory of solving models with time dependent flows by finite difference methods is developed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02461436
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  • 2
    Electronic Resource
    Electronic Resource
    Transient behaviour of the single loop solute cycling model of the renal medulla (1978)
    Springer
    Bulletin of mathematical biology 40 (1978), S. 273-300 
    Details
    ISSN: 1522-9602
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Mathematics
    Notes: Abstract Transient solutions are developed for the buildup of a concentration gradient in the single loop solute cycling model of the renal medulla. The “pump” from ascending limb to descending limb is considered in both unsaturated and completely saturated modes of operation. Both analytic solutions and semianalytic solutions obtained from inverting Laplace transforms are considered. The classic representation of concentration buildup by the multiplication process is compared with calculated profiles. The “single effect” is found to vary both in time and space.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02461602
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  • 3
    Electronic Resource
    Electronic Resource
    Characterization of replication-defective transforming RNA tumor viruses by in vitro translation (1979)
    Springer
    Molecular biology reports 5 (1979), S. 115-120 
    Details
    ISSN: 1573-4978
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00777497
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  • 4
    Electronic Resource
    Electronic Resource
    A mathematical model of proximal tubule absorption (1979)
    Springer
    The journal of membrane biology 47 (1979), S. 377-399 
    Details
    ISSN: 1432-1424
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Summary A previous model of the mechanisms of flow through epithelia was modified and extended to include hydrostatic and osmotic pressures in the cells and in the peritubular capillaries. The differential equations for flow and concentration in each region of the proximal tubule were derived. The equations were solved numerically by a finite difference method. The principal conclusions are: (i) Cell NaCl concentration remains essentially isotonic over the pressure variations considered; (ii) channel NaCl concentration varies only a few mosmol from isotonicity, and the hydrostatic and osmotic pressure differences across the cell wall are of the same order of magnitude; (iii) both reabsorbate osmolality and pressure-induced flow are relatively insensitive to the geometry of the system; (iv) a strong equilibrating mechanism exists in the sensitivity of the reabsorbate osmolality to luminal osmolality; this mechanism is far more significant than any other parameter change.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01869745
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  • 5
    Electronic Resource
    Electronic Resource
    The spike-strain test for polymeric liquids and its relevance for irreversible destruction of network connectivity by deformation (1979)
    Springer
    Rheologica acta 18 (1979), S. 463-468 
    Details
    ISSN: 1435-1528
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Physics
    Description / Table of Contents: Zusammenfassung Die Grundannahmen derLodgeschen Theorie der gummiartigen Flüssigkeit werden zusammengefaßt. Zwei weitere Annahmen sind notwendig, wenn man das Scher- und Dehnverhalten von Polymerschmelzen und konzentrierten Polymerlösungen bei finiten Deformationen beschreiben will: (1) die Annahme der Zerstörung des temporären Netzwerkes polymerer Flüssigkeiten mit zunehmender Deformation und (2) die Annahme, daß diese Zerstörung ein irreversibler Vorgang ist. Hier wird ein neuer Versuch, der sogenannte „Spike-Strain-Test“, vorgeschlagen. Damit ist es möglich, die Annahme einer irreversiblen Zerstörung des temporären Netzwerkes polymerer Flüssigkeiten mit zunehmender Deformation zu überprüfen. Die Bedeutung dieses Experimentes für eine größere Klasse von rheologischen Zustandsgleichungen wird diskutiert.
    Notes: Summary The basic assumptions ofLodge's rubberlike-liquid constitutive equation for polymer melts and concentrated solutions are summarized. By two additional assumptions — (i) the network disentanglement assumption and (ii) the irreversibility assumption — a modified rubberlike-liquid constitutive equation is obtained, which has been shown to be a valid description of material behaviour in shear and elongational flow. In this paper a novel test — the spikestrain test — is proposed. On the basis of this experiment the assumption of irreversible destruction of network connectivity by deformation can be examined. The significance of the spike-strain test for a larger class of constitutive equations is discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01736952
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  • 6
    Electronic Resource
    Electronic Resource
    Clarification of an apparent asymmetry in electromagnetic theory (1978)
    Springer
    Foundations of physics 8 (1978), S. 921-926 
    Details
    ISSN: 1572-9516
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The status of the advanced potential solution in electromagnetic theory is analyzed and assessed. It is shown that the advanced potential solution does not violate a causality argument and that its existence in electromagnetic theory is on an exactly equal footing with the retarded potential solution. The general potential solution is thus completely symmetric. It is further shown that there is no “one-sidedness” in nature; oscillating electrons and orbiting electrons are just as good at absorbing energy as they are at radiating it. These conclusions are sufficient to invalidate a number of theoretical models.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00715063
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  • 7
    Electronic Resource
    Electronic Resource
    The gauge in general relativity. II (1978)
    Springer
    General relativity and gravitation 9 (1978), S. 21-38 
    Details
    ISSN: 1572-9532
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The present paper and a companion work are intended as one possible realization of a non-customary gauge theory of general relativity-as set forth in only broad outline in an earlier work. In this first paper, it is found that both radar echo delay and the perihelion shift differ slightly from their customary expressions. Unfortunately, it is also found that the usual statement of the principle of equivalence does not hold in the present formulation. Finally, in the second paper, a single cosmological model is investigated that appears to be promising.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00772548
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  • 8
    Electronic Resource
    Electronic Resource
    The gauge in general relativity. III (1978)
    Springer
    General relativity and gravitation 9 (1978), S. 39-51 
    Details
    ISSN: 1572-9532
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract A noncustomary gauge theory of general relativity, developed in detail in the preceding paper (II), is here applied to cosmology. A universe that is homogeneous and isotropic in the customary gauge, is considered-first generally, and then in more detail for the case where the noncustomary universe is matter dominated and static. With a particular choice ofσ equation, this model is solved and a new relation between customary mass density, Hubble constant, and deceleration parameter is found. For a customary deceleration parameter of 1.98, this relation yields a customary mass density of 3.1×10−31 g/cm3-in good agreement with experiment. Finally, the age of the universe in this model is found to be〉6.6× 109 yr, again in agreement with other estimates.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00772549
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  • 9
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    The gauge in general relativity. II (1978)
    Springer
    Details
    Publication Date: 1978-01-01
    Print ISSN: 0001-7701
    Electronic ISSN: 1572-9532
    Topics: Physics
    Published by Springer
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  • 10
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    The gauge in general relativity. III (1978)
    Springer
    Details
    Publication Date: 1978-01-01
    Print ISSN: 0001-7701
    Electronic ISSN: 1572-9532
    Topics: Physics
    Published by Springer
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