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  • 1
    Call number: 20-1/M 08.0445
    In: International hydrology series
    Description / Table of Contents: Contens: Preface: H. S. Wheater, S. Sorooshian and K. D. Sharma; 1. Modelling hydrological processes in arid and semi-arid areas - an introduction H. Wheater; 2. Global precipitation estimation from satellite imagery using artificial neural networks S. Sorooshian, K.-L. Hsu, B. Imam and Y. Hong; 3. Modelling semi-arid and arid hydrology and water resources - the southern Africa experience D. A. Hughes; 4. Use of the IHACRES rainfall-runoff model in arid and semi-arid regions B. F. W. Croke and A. J. Jakeman; 5. KINEROS2 and the AGWA modelling framework D. J. Semmens, D. C. Goodrich, C. L. Unkrich, R. E. Smith, D. A. Woolhiser and S. N. Miller; 6. A distributed spatial sediment delivery model for arid regions K. D. Sharma; 7. The Modular Modeling System (MMS): a toolbox for water and environmental resources management G. H. Leavesley, S. L. Markstrom, R. J. Viger and L. E. Hay; 8. Calibration, uncertainty and regional analysis of conceptual rainfall-runoff models H. Wheater, T. Wagener and N. McIntyre; 9. Real-time flow forecasting P. C. Young; 10. Real-time flood forecasting - Indian experience R. D. Singh; 11. Groundwater modeling in hard-rock terrain in semi-arid areas: experience from India S. Ahmed, J.-C. Maréchal, E. Ledoux and G. de Marsily;
    Type of Medium: Monograph available for loan
    Pages: IX, 195 S. , Ill., graph. Darst., Kt.
    ISBN: 0521869188 , 978-0-521-86918-8
    Series Statement: International hydrology series
    Classification:
    Hydrology
    Language: English
    Location: Reading room
    Branch Library: GFZ Library
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Bulletin of environmental contamination and toxicology 65 (2000), S. 330-336 
    ISSN: 1432-0800
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Medicine
    Type of Medium: Electronic Resource
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  • 3
    Publication Date: 2000-09-01
    Print ISSN: 0007-4861
    Electronic ISSN: 1432-0800
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Medicine
    Published by Springer
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  • 4
    Publication Date: 2000-09-01
    Print ISSN: 0007-4861
    Electronic ISSN: 1432-0800
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Medicine
    Published by Springer
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  • 5
    Electronic Resource
    Electronic Resource
    s.l. : American Chemical Society
    The @journal of organic chemistry 28 (1963), S. 740-742 
    ISSN: 1520-6904
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Springer
    Mathematische Zeitschrift 89 (1965), S. 94-97 
    ISSN: 1432-1823
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    Springer
    Heat and mass transfer 25 (1990), S. 93-99 
    ISSN: 1432-1181
    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 Diese Untersuchung befaßt sich mit turbulentem Filmsieden an einer vertikalen nicht isothermen Oberfläche unter Berücksichtigung der thermischen Strahlung von der Seitenfläche. Es wird festgestellt, daß die Anwendung der Reynolds-Analogie zusammen mit der thermischen Leitung in der Testoberfläche eine konjugiertkomplexe Lösung ergeben. Der Fall isothermer Bedingungen kann als Spezialfall des beschriebenen betrachtet werden. Diese Untersuchung führte weiterhin zu der Formulierung einer funktionellen Beziehung zwischen der Nußelt-ZahlNu, dem StrahlungsparameterN R , dem RippenparameterM, dem TemperaturverhältnisT s /(T w,0−T s ) und einem Produkt aus der charakteristischen modifizierten Grashof-Zahl, der Prandtl-Zahl und dem Überhitzungsparameter definiert alsGr 2 Pr S. Bei voll entwickeltem turbulenten Filmsieden z. B. für die modifizierte Grashof-Zahl größer als 1010, muß das Temperaturverhältnis in den nichtlinearen Termen, die infolge der Strahlung von der Seitenfläche der Rippe entstehen, berücksichtigt werden. Die Ergebnisse befinden sich über einen großen Bereich hinweg in guter Übereinstimmung mit experimentell erhaltenen Daten.
    Notes: Abstract The turbulent film boiling from a vertical non-isothermal surface is formulated with due consideration to thermal radiation from its lateral face. It is observed that the application of Reynolds analogy together with thermal conduction in the test surface has yielded a conjugate solution from which the case of an isothermal condition can be generated as a special case. The analysis has further paved the way in establishing a functional relation between the Nusselt numberNu, radiation parameterN R , fin parameterM, temperature ratio termT s /(T w,0−T s ), and a product of characteristic modified Grashof, Prandtl and superheating parameter defined as (Gr 2 Pr S). In a fully developed turbulent film boiling i.e., modified Grashof number being greater than 1010, the temperature ratio term accounts for the non-linearities arising due to the inclusion of radiation from the lateral face of the fin. The results are in good agreement with experimental data over a wide range of system conditions.
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    Springer
    Heat and mass transfer 24 (1989), S. 19-23 
    ISSN: 1432-1181
    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 Laminares Filmsieden an einer vertikalen Rippe wird als ein konjugiert-komplexes Problem formuliert und für den Fall untersucht, daß entweder kein Schlupf oder keine Schubspannungen ander Flüssigkeits-Dampf-Grenzfläche auftreten. Die Ergebnisse zeigen, daß die zusammengefaßten Effekte von thermischen Verlusten an den Enden der Rippe, sowie Strahlung von der Seitenfläche, die mittleren Nusselt-Zahlen beeinflussen. Weiterhin kann gezeigt werden, daß bei zweckmäßiger Änderung der Randbedingungen an den Enden der Rippe die isotherme Randbedingung abgeleitet werden kann. Für die Ergebnisse der Untersuchung werden dimensionslose funktionelle Beziehungen zwischen der mittleren Nusselt-ZahlNu m, dem RippenparameterM, dem Strahlungs-parameterN R und dem Temperaturverhältnis Ψ aufgestellt. Die aufgestellte Gleichung kann für Konstruktionsberechnungen benutzt werden.
    Notes: Abstract Laminar film boiling on a vertical fin is formulated as a conjugate phenomenon and investigated for no slip and zero shear conditions at the vapor-liquid interface. The results indicate that the combined effects of thermal leakage at the ends of the fin and radiation from its lateral face have profound influence on the average Nusselt number. Further, from the formulation it can be shown that the isothermal condition can be deduced by suitably changing the boundary conditions of the fin at its extremities. The results of the investigation are rendered into dimensionless functional relationships between the average Nusselt numberNu m, fin parameterM, radiation parameterN R and temperature ratio term Ψ. The proposed equation can be made use of in design calculations.
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    Springer
    Biology and fertility of soils 32 (2000), S. 24-27 
    ISSN: 1432-0789
    Keywords: Key words Ammonia volatilization ; Urea ; Pyrite ; Potassium chloride ; Copper sulphate
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Geosciences , Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract  Effects of amending urea with pyrite (Py) or potassium chloride (KCl) alone and in combination with copper sulphate (CuSO4) on NH3 volatilization and N-use efficiency in an Alfisol were evaluated. NH3 volatilization from surface-applied urea fertilizers was measured using a closed dynamic air flow system. Kinetics of NH3 volatilization over a 10-day period showed that the peak rate of NH3 loss was on day 3 with the unamended urea, whilst it occurred on day 4 with all amended urea fertilizers. Total NH3 loss from the unamended urea was 48% of the applied N, which was reduced to 38 and 40% with U+Py and U+KCl, respectively. A further reduction in N loss was recorded with U+Py+CuSO4 (34%) and U+KCl+CuSO4 (36%). The inhibition of NH3 with U+Py+CuSO4 and U+KCl+CuSO4 was markedly high, at 30 and 25%, respectively. As compared to urea, all amended urea fertilizers resulted in a significantly higher dry matter yield, N uptake and apparent N recovery (ANR) efficiency by sunflower. An increase of 28 and 24% units in ANR over urea could be obtained with U+Py+CuSO4 and U+KCl+CuSO4, respectively. Since the chemical additives also have a fertilizer value besides being effective in controlling NH3 loss from urea and improving N-use efficiency, their use as amendment to urea could be a viable option.
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    Springer
    Il nuovo cimento della Società Italiana di Fisica 12 (1990), S. 1603-1610 
    ISSN: 0392-6737
    Keywords: Plasma flow ; magnetohydrodynamics ; Magnetohydrodynamics and electrohydrodynamics
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Summary The thermosolutal instability of a rotating plasma in the presence of a uniform vertical magnetic field is studied to include the effects of Hall current. When the instability sets in as stationary convection for the case of no rotation, the Hall effects are found to be destabilizing. The stable solute gradient and rotation are found to have stabilizing effects. In the presence of rotation the Hall currents are found to be stabilizing forT 1〉M(1+x)2. the case of overstability is also considered and it is shown that such solutions exist. The variation of the frequency with respect to the wave number at the neutral state is graphically shown.
    Type of Medium: Electronic Resource
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