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  • 2000-2004  (1)
  • 1985-1989  (7)
  • 1975-1979  (1)
  • 1
    Digitale Medien
    Digitale Medien
    Mechanism of ketol acid reductoisomerase. Steady-state analysis and metal ion requirement (1989)
    s.l. : American Chemical Society
    Biochemistry 28 (1989), S. 486-493 
    Details
    ISSN: 1520-4995
    Quelle: ACS Legacy Archives
    Thema: Biologie , Chemie und Pharmazie
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1021/bi00428a012
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  • 2
    Digitale Medien
    Digitale Medien
    World Hunger: Twelve Myths by Frances Moore Lappe, Joseph Collins, Peter Rosset, with Luis Esparza (2000)
    Springer
    Agriculture and human values 17 (2000), S. 411-412 
    Details
    ISSN: 1572-8366
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Land- und Forstwirtschaft, Gartenbau, Fischereiwirtschaft, Hauswirtschaft
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1023/A:1026599913086
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  • 3
    Digitale Medien
    Digitale Medien
    Computation of turbulent asymmetric trailing-edge flows (1986)
    Springer
    Zeitschrift für angewandte Mathematik und Physik 37 (1986), S. 53-63 
    Details
    ISSN: 1420-9039
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Mathematik , Physik
    Beschreibung / Inhaltsverzeichnis: Zusammenfassung Die Methode der finiten Elemente in verallgemeinerten Koordinaten mit „time-split“ wird benützt, um die kompressible Strömung an einer unsymmetrischen Hinterkante zu berechnen. Das Turbulenz-Modell benützt eine zeitverzögerte algebraische turbulente Zähigkeit. Der Testfall ist eine Strömung mit der nominellen Machzahl 0.4 und der Reynoldszahl 26.2×106. Mittlere Geschwindigkeitsprofile und die Verteilung der Verdrängungsdicke stimmen mit den experimentellen Resultaten gut überein. Der Druck und die Wandschubspannung zeigen eine vernünftige Übereinstimmung mit den experimentellen Werten, mit Ausnahme der Umgebung der „Schulter“ auf der Oberseite.
    Notizen: Abstract Turbulent compressible flow past an asymmetric trailing edge has been computed using the generalised-coordinate time-split group finite-element method and a lagged algebraic eddy viscosity turbulence model. The test case considered is that of a flow at a nominal Mach number of 0.4 and a Reynolds number of 26.2×106. Mean velocity profiles and the displacement thickness distribution are in good agreement with the experimental results. The pressure and surface shear stress indicate reasonable agreement with the experimental results, except near the shoulder on the upper surface.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00955518
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  • 4
    facet.materialart.
    Unbekannt
    Effects of a Television and Radio Advertising Ban: A Study of the Cigarette Industry (1986)
    New York : Periodicals Archive Online (PAO)
    Journal of marketing. 50:4 (1986:Oct.) 219 
    Details
    ISSN: 0022-2429
    Thema: Wirtschaftswissenschaften
    URL: http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&res_dat=xri:pao:&rft_dat=xri:pao:article:3142-1986-050-04-000007
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  • 5
    Digitale Medien
    Digitale Medien
    Irrigation studies on watermelon (Citrullus lanatus (Thunb) Matsum et Nakai) (1989)
    Springer
    Irrigation science 10 (1989), S. 293-301 
    Details
    ISSN: 1432-1319
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Land- und Forstwirtschaft, Gartenbau, Fischereiwirtschaft, Hauswirtschaft
    Notizen: Summary Field experiments carried out on watermelon at the Indian Institute of Horticultural Research, Bangalore, during 1984 and 1985 indicate that frequen irrigations with 100% evaporation replenishment result in highest fruit yield, dry matter production, total soluble solids, sugars, NO3-N, N, P, K, Ca, Mg uptake and higher water use efficiency. However, yield differences were only statistically significant during 1985. Drip irrigation with 1 emitter per 2 plants produced the highest yield and water use efficiency as compared to other irrigation treatments. Dry matter, total soluble solids, sugars, NO3-N, N, P, K, Ca, Mg uptake and WUE under drip irrigation were higher than under furrow irrigation treatments.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00257494
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  • 6
    Digitale Medien
    Digitale Medien
    Physical properties of mixed crystals of alkali halides (1986)
    Springer
    Journal of materials science 21 (1986), S. 4117-4130 
    Details
    ISSN: 1573-4803
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Maschinenbau
    Notizen: Abstract The physical properties of mixed crystals of alkali halides are reviewed. The properties considered are experimentally determined quantities like the lattice constants, the compressibility, the elastic constants, thermal expansion, specific heats, Debye-Waller factors, dielectric constant, refractive index, IR spectra and Raman spectra and also some calculated solid-state parameters like Debye temperatures and lattice energies. A critical analysis of composition dependence shows four groups designated as follows: Type A, properties which vary linearly with composition; Type B, properties which vary slightly non-linearly with composition; Type C, properties which depend highly non-linearly on composition with the values for mixed crystals exceeding the values for end members; and Type D, properties which are peculiar to the mixed crystals and are not shown by the parent crystals. Most of the physical properties belong to Types A or B. Variation of Type C is shown only by properties affected by differences in ion size like the Debye-Waller factor and the microhardness. Properties which are symmetry-dependent like the first-order Raman spectrum and the IR spectra are of Type D. Attention is drawn to areas where further work is needed.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF01106517
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  • 7
    Digitale Medien
    Digitale Medien
    Turn-on delay of a Josephson junction (1989)
    Springer
    Journal of low temperature physics 74 (1989), S. 407-415 
    Details
    ISSN: 1573-7357
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Physik
    Notizen: Abstract An attempt has been made to give a new definition of turn-on delay of a Josephson junction which differs from earlier works. On the basis of our definition, an analytical expression of turn-on delay has been developed. This analytical model is based on a concept inherently different from those of Harris and McDonaldet al. It is observed that based on our model, the analytical expression of McDonaldet al. can also be obtained. A comparative study between our turn-on delay and those of Harris and McDonaldet al. is also made. It is expected that our definition and analytical expression of turn-on delay will eliminate the drawbacks and confusions of earlier investigations. The present work will find use in critically ascertaining the switching speed of Josephson analogs and digital circuits.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00682666
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  • 8
    Digitale Medien
    Digitale Medien
    Sites of steroid synthesis in the ovary of the cyclic hamster: A histochemical study (1978)
    New York, NY [u.a.] : Wiley-Blackwell
    American Journal of Anatomy 151 (1978), S. 71-86 
    Details
    ISSN: 0002-9106
    Schlagwort(e): Life and Medical Sciences ; Cell & Developmental Biology
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Medizin
    Notizen: The histochemistry of lipids, Δ5-3β-, 20α and 17β-hydroxy-steroid dehydrogenases, glucose-6-phosphate and isocitrate dehydrogenases, NADH and NADPH-diaphorases and acid phosphatase has been studied in the ovary of the cyclic hamster. None of the enzymes studied was present in the preantral follicles on day 1 (day of ovulation) or any day of the 4-day cycle. With the development of antral follicles (on day 3) a few fine lipid droplets appeared in the granulosa cells. The theca interna exhibited moderate amounts of NADH-diaphorase, Δ5-3β-HSDH, 17β-HSDH and slight NADPH-diaphorase, G-6-PDH and ICDH, whereas the granulosa cells of antral follicles showed weak Δ5-3β-HSDH, NADH-diaphorase and moderate 17β-HSDH but intense NADPH-diaphorase, G-6-PDH and ICDH activities. All enzyme activities in both theca and granulosa became more pronounced on proestrus (day 4).In the corpora lutea (CL) all the above enzymes were present on day 1 and increased on day 2, followed by a rapid decline on days 3 and 4. Lipids were sparsely represented in CL on days 1 and 2 but showed marked accumulations on days 3 and 4. Likewise, acid phosphatase increased on days 3 and 4. The enzyme 20α-HSDH was not detectable in the CL.The interstitium showed moderate amounts of lipids, Δ5-3β-HSDH and NADH-diaphorase while 17β-HSDH, NADPH-diaphorase, G-6-PDH and ICDH were only weakly present. There were no appreciable changes in the lipid and various enzymes in the interstitium throughout the cycle except for Δ5-3β-HSDH which increased slightly on the afternoon of day 4. Acid phosphatase was not detected in appreciable amounts in the interstitium throughout the cycle.These findings suggest that preantral follicles are unlikely to contribute to steroidogenesis. The antral follicles are the principal source of estrogen, with the granulosa being the major site of synthesis. The interstitium can serve as a major source of progesterone (P) while the theca interna and granulosa cells of antral follicles may form additional sites for P synthesis on the afternoon of day 4. The CL in the hamster are very short-lived and steroidogenesis in them may proceed beyond the synthesis of progesterone. The present findings are correlated with the steroid levels found during the cycle. Appropriate comparisons are also made with the rat ovary.
    Zusätzliches Material: 2 Tab.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/aja.1001510107
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  • 9
    Digitale Medien
    Digitale Medien
    A three-level generalized-co-ordinate group finite-element method for compressible viscous flow (1985)
    Chichester : Wiley-Blackwell
    International Journal for Numerical Methods in Fluids 5 (1985), S. 463-481 
    Details
    ISSN: 0271-2091
    Schlagwort(e): Trailing-edge Flow ; Laminar Flow ; Turbulent Flow ; Generalized Co-ordinates ; Group Finite-element Method ; Engineering ; Engineering General
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Maschinenbau
    Notizen: A consistent three-level time-split group finite-element method, suitable for the computation of viscous compressible flows in irregular geometric domains, is described. Exploitation of the group12 formulation permits an accurate and economical algorithm to be developed in a generalized-co-ordinate (ζ,η) space. A variable sweep cycle is used to accelerate convergence to the steady state. The method is demonstrated by computing laminar and turbulent flow past a trailing edge. The method uses an algebraic eddy viscosity model to represent turbulence and produces results in close agreement with the experiments and computations of Viswanath et al8.
    Zusätzliches Material: 12 Ill.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/fld.1650050506
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