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  • 1975-1979  (3)
  • 1965-1969  (1)
Document type
Keywords
Publisher
Years
Year
  • 1
    Electronic Resource
    Electronic Resource
    Hexamethylenetetramine-m-cresol (1:2) (1978)
    Copenhagen : International Union of Crystallography (IUCr)
    Acta crystallographica 34 (1978), S. 2061-2063 
    Details
    ISSN: 1600-5740
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1107/S0567740878007396
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    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    Structure in the beta strength function of very neutron-rich Rb-isotopes (1979)
    Springer
    The European physical journal 292 (1979), S. 73-77 
    Details
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The beta strength functionS β is calculated in a schematical Brown-Bolsterli model for the Gamow-Tellerβ − decay of89–99Rb. The position of the peaks inS β resulting from the back spin flip transitions and the calculated life-times are in good agreement with recent experimental results. A simple regularity is found to govern the energy position of the lowest-lying structures inS β. By calculations of the type given here thus it should be possible to produce much more reliable input data concerningS β forr-orn-process calculations than have been used up to now in astrophysical calculations.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01434633
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Determination of fission barrier heights from β-delayed fission (1979)
    Springer
    The European physical journal 292 (1979), S. 249-255 
    Details
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Beta delayed fission (βDF) gives a possibility to investigate the fission barrier for nuclei far off beta stability. However, before any information on the fission barrier can be extracted, the effect of low-lying structures in the beta-strength function (S β) on theβDF branching ratio has to be considered. This is in general not done. In this paper the lowlying structures that occur inS β are discussed and microscopic calculations for the Gamow-Teller strength function are presented for232Th (β −-decay) and232Pu,240Cm,244,248Cf and248Fm (β +-decay). Using the calculated strength functionsβ +DF branching ratios are calculated and compared with the experimental ones. The sensitivity of the results to different shapes ofS β is investigated. It is concluded that, when the expected structures inS β are considered, there are at present no indications fromβ + DF measurements that the errors in the fission barrier calculations are larger than the uncertainty given for those calculations. The difference in magnitude between theβ − DF and theβ +DF branching ratios is also explained by the occurrence of low-lying structures inS β.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01547469
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Slug flow heat transfer with mass injection and linearly varying wall temperature (1967)
    Hoboken, NJ : Wiley-Blackwell
    AIChE Journal 13 (1967), S. 1127-1131 
    Details
    ISSN: 0001-1541
    Keywords: Chemistry ; Chemical Engineering
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: The purpose of this study was to determine the two-dimensional temperature field for a fluid in slug flow through tubes with uniform mass injection and linearly decreasing wall temperature. A series solution was obtained, the first ten eigenvalues for which were determined from the characteristic equation by the method of Runge-Kutta. Expressions for local conductive heat flux at the tube wall and local Nusselt number were obtained as a function of inlet Peclet number, injection Peclet number, tube radius, temperature boundary conditions, and fluid properties. Sample results are presented for several injection rates at different wall temperature conditions. In general, mass injection was found to decrease the local heat flux and increase temperature driving force causing a decrease in the Nusselt number.
    Additional Material: 6 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/aic.690130618
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    Paper (German National Licenses)
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