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  • Moses Mendelssohn Zentrum  (2)
  • Wissenschaftspark Albert Einstein  (2)
  • Grünes Gedächtnis  (1)
  • SLB Potsdam
  • SB Lübben
  • 1975-1979  (5)
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  • 1
    Buch
    Buch
    Washington, DC : United States Gov. Print. Off.
    Dazugehörige Titel
    UID:
    kobvindex_GFZ43228
    Umfang: VII, A-11, B-26 S.
    Serie: U.S. Geological Survey professional paper 907-A,B
    Anmerkung: MAB0014.001: SR 90.0002(907-A,B) , Enth. außerdem: Ch. B
    In: Professional paper
    Sprache: Englisch
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 2
    Buch
    Buch
    Harmondworth : Penguin
    UID:
    kobvindex_GED36900
    Umfang: 205 S.
    ISBN: 0140470867
    Sprache: Unbestimmte Sprache
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 3
    UID:
    kobvindex_GFZ122933
    Umfang: vii, 85 Seiten , Illustrationen
    Serie: Research report / Cold Regions Research and Engineering Laboratory 345
    Inhalt: CONTENTS: Abstract. - Preface. - List of symbols. - Introduction. - Previous work. - Experimental design. - The radioisotope 22Na. - Description of apparatus. - Experimental procedure. - Correction of profiles. - Assumptions. - Decay correction. - Boundary correction. - Error analysis. - Results. - Salinity data. - Temperature data. - Growth velocity. - Discussion. - Brine and ice properties. - Brine salinity. - Brine density. - Brine volume. - Brine latent heat of freezing. - Brine viscosity, specific heat, and thermal conductivity. - Ice properties. - Theoretical brine expulsion model. - Continuity equations. - Thermal energy equation. - Simplified brine expulsion equations. - Brine expulsion in NaCl ice. - Results. - Discussion. - Gravity drainage in NaCl ice. - Application of results to natural sea ice. - Effective distribution coefficient. - Previous work. - Experimental procedure and results. - Conclusions. - Literature cited. - Appendix A: Profile correction data. - Appendix B: Program "correct" and sample output. - Appendix C: Tabulation of salinity data. - Appendix D: Tabulation of profile data. - Appendix E: Time-ice thickness equations (Runs 2 and 3). - Appendix F: Tabulation of distribution coefficient data.
    Inhalt: To obtain a better understanding of the desalination of natural sea ice, an experimental technique was developed to measure sequential salinity profiles of a growing sodium chloride ice sheet. Using radioactive 22Na as a tracer, it was possible to determine both the concentration and movement of the brine within the ice without destroying the sample. A detailed temperature and growth history of the ice was also maintained so that the variation of the salinity profiles could be properly interpreted. Since the experimental salinity profile represented a smoothed, rather than a true salinity distribution, a deconvolution method was devised to restore the true salinity profile. This was achieved without any significant loss of end points. In all respects, the salinity profiles are similar to those of natural sea ice. They have a characteristic C-shape, and clearly exhibit the effects of brine drainage. Not knowing the rates of brine expulsion or gravity drainage, the variation of the salinity profiles during the period of ice growth could be explained by either process. To determine the relative importance of the desalination mechanisms, a theoretical brine expulsion model was derived and compared to the experimental data. As input for the model, equations describing the variation of some properties of NaCl brine with temperature were derived. These included the brine salinity, viscosity, specific heat, thermal conductivity, and latent heat of freezing. The theoretical brine expulsion model was derived by performing mass and energy balances over a control volume of NaCl ice. A simplified form of the model, when compared to the experimental results, indicated that brine expulsion was only important during the first several hours of ice growth, and later became a minor desalination process relative to gravity drainage which continued to be the dominant mechanism for the remainder of the study period (up to 6 weeks). The rate of gravity drainage was found to be dependent on the brine volume and the temperature gradient of the ice. As either the brine volume or temperature gradient was increased, the rate of change of salinity due to gravity drainage increased. The equation commonly used to calculate the effective distribution coefficient (Weeks and Lofgren 1967) was modified and improved by taking brine drainage into account. An expression was also derived to give the distribution coefficient at very low growth velocities.
    Anmerkung: MAB0014.001: ZSP-202-345
    In: Research report / Cold Regions Research and Engineering Laboratory, 345
    Sprache: Englisch
    Schlagwort(e): Forschungsbericht
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 4
    Buch
    Buch
    South Bend, Ind. :Regnery/Gateway,
    UID:
    kobvindex_MMZa0018964
    Umfang: XVIII, 297 S.
    ISBN: 0-89526-686-5
    Originaltitel: Plaidoyer pour l'Europe décadente
    Sprache: Deutsch
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 5
    UID:
    kobvindex_MMZa0019583
    Umfang: 218 S.
    ISBN: 0-448-15166-9
    Serie: Fred Jordan books
    Originaltitel: Paradoxe Juif
    Anmerkung: Zahlreiche Anstreichungen und Anm. im Text: S. 88-91 [Abschnitt: The creation of Israel], Balfour, Lloyd George, Wilson, Ben Gurion, zionist, Bevin, S. 193-104 Golda Meir, Moshe Dayan, S, 107 United Nations Organization, S. 113 Thailand, S. 156-164 [Abschnitt: The uncles from America], Kissinger, Metternich, Bismarck, S. 199-211 [Abschnitt: Geneva and hope], West Bank, Gaza Strip, Begin, Sinai, Roger Garaudy , Zahlreiche Anstreichungen und Anm. im Text: S. 88-91 [Abschnitt: The creation of Israel], Balfour, Lloyd George, Wilson, Ben Gurion, zionist, Bevin, S. 193-104 Golda Meir, Moshe Dayan, S, 107 United Nations Organization, S. 113 Thailand, S. 156-164 [Abschnitt: The uncles from America], Kissinger, Metternich, Bismarck, S. 199-211 [Abschnitt: Geneva and hope], West Bank, Gaza Strip, Begin, Sinai, Roger Garaudy
    Sprache: Deutsch
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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