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  • Springer  (54)
  • Elsevier  (19)
  • 1990-1994  (42)
  • 1975-1979  (3)
  • 1970-1974  (19)
  • 1965-1969  (7)
  • 1945-1949  (2)
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Keywords
Publisher
Years
Year
  • 1
    Electronic Resource
    Electronic Resource
    Hydrogen bonding in basic copper salts: a spectroscopic study of malachite, Cu2(OH)2CO3, and brochantite, Cu4(OH)6SO4 (1993)
    Springer
    Physics and chemistry of minerals 20 (1993), S. 27-32 
    Details
    ISSN: 1432-2021
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Notes: Abstract Infrared and Raman spectra of the basic copper salts malachite, Cu2(OH)2CO3, and brochantite, Cu4(OH)6SO4, as well as of deuterated and 13C substituted samples are presented and discussed in terms of group theory and the hydrogen bonds present. The main results are that (i) the hydrogen donor strengths of the OH− ions are strongly increased due to the very great synergetic effect of the copper ions, (ii) the acceptor strengths of the H-bond acceptor groups (SO4 2-, CO3 2-, and OH− ions) are significantly modified by the linkage and coordination of the acceptor atoms — this complicates true assignment of the OH bands observed to the two and six different OH− ions present in malachite and brochantite, respectively -, and (iii) the Cu — O stretching modes at 430–590 cm−1 and 420–520 cm−1 for malachite and brochantite, respectively, exhibit strong, partially covalent Cu — O bonding.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00202247
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  • 2
    Electronic Resource
    Electronic Resource
    Referate (1947)
    Springer
    Theoretical and applied genetics 17-18 (1947), S. 450-469 
    Details
    ISSN: 1432-2242
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00706972
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  • 3
    Electronic Resource
    Electronic Resource
    Automatisches Herstellen von englumigen Glaskapillaren, Glasfäden und Mikropipetten (1966)
    Springer
    Naturwissenschaften 53 (1966), S. 582-582 
    Details
    ISSN: 1432-1904
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology , Natural Sciences in General
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00600532
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  • 4
    Electronic Resource
    Electronic Resource
    Thioaldehyde als Liganden in Carbonylkomplexen (1971)
    Springer
    Naturwissenschaften 58 (1971), S. 96-96 
    Details
    ISSN: 1432-1904
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology , Natural Sciences in General
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00595026
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  • 5
    Electronic Resource
    Electronic Resource
    Synthese, Kristall- und Molekül-Struktur von Cycloikosaschwefel, S20 (1973)
    Springer
    Naturwissenschaften 60 (1973), S. 300-300 
    Details
    ISSN: 1432-1904
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology , Natural Sciences in General
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00624448
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  • 6
    Electronic Resource
    Electronic Resource
    Registrierung der Chloridteilchenkonzentration der Luft an der Westküste von Dänemark (1972)
    Springer
    Pure and applied geophysics 97 (1972), S. 219-233 
    Details
    ISSN: 1420-9136
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Description / Table of Contents: Zusammenfassung Registrierungen der Chloridteilchenkonzentration in der bodennahen Luft an der Westküste von Dänemark während einer Dauer von fünf Monaten zeigen eine sehr klare Abhängigkeit vom Wetterablauf. Dabei werden hohe Konzentrationen bei stürmischen Westwetterlagen mit Vorbeizug von Tiefdruckgebieten, niedrige bei Ostwetterlagen mit hohem Luftdruck über Skandinavien gefunden. Dieser Befund zeigt klar, dass grosse Mengen von Chloridteilchen wohl ausschliesslich in den Starkwindfeldern der Zyklonen über dem Meere durch Zerstäuben von Gischt erzeugt werden. Einige Ergebnisse über Grössenverteilungsbestimmungen werden mitgeteilt.
    Notes: Summary For a periode of five months, the chloride particle concentrations in the air near the ground were measured at the west-coast of Denmark. The results show clearly, that high concentrations are connected with west wind, especially with passages of cyclones over Denmark or Skagerrak, low concentrations with east wind and anticyclones over Scandinavia. This lead us to the conclusion, that high concentrations of chloride particles are generated in the storm-areas of deep cyclones over the sea.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00875963
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  • 7
    Electronic Resource
    Electronic Resource
    Simultaneous vertical profiles of condensation nuclei and ozone in the lower troposphere (1974)
    Springer
    Pure and applied geophysics 112 (1974), S. 887-899 
    Details
    ISSN: 1420-9136
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Notes: Summary Eight vertical profiles compiled from simultaneous measurements of Aitken nuclei and ozone concentrations over Germany in different weather conditions are discussed. The position and shape of the profiles is shown to depend on the prevailing weather conditions and the type of air masses. High aerosol concentrations in smoke plumes correlate in some cases with lower ozone concentrations, indicating that ozone in such cases is destroyed in the presence of high concentrations of pollutants such as aerosols and gases. A layered structure in the profiles was found only in association with temperature inversions and where the air above 2 km was subsiding, and was not found in convective parts of the troposphere.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00881494
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  • 8
    Electronic Resource
    Electronic Resource
    Hf-sputtered indium oxide films doped with tin (1978)
    Springer
    Applied physics 16 (1978), S. 239-246 
    Details
    ISSN: 1432-0630
    Keywords: 72.40 ; 73
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract Indium oxide films doped with tin (ITO-films) have been hf-sputtered from an 80 at-%In2O3/20 at-%SnO2 target onto glass substrates. The sputter atmosphere contained mainly argon (10−2Torr) with addition of oxygen (0≦p O 2≦2·10−2Torr). The sputtered films aren-conductors. The conductivity and density of charge carriers depend on the oxygen content of the sputter gas. They could be varied by two orders of magnitude. In air or in oxygen atmosphere the films oxidize at the surface and for a certain depth beneath the surface, thus decreasing the conductivity. The Hall mobility of the sputtered films is smaller (≈10 cm2V−1 s−1) than one observes at ITO films produced by CVD sparaying or other methods. The conductivity of as sputtered films approached maximum values of about 1000Ώ−1cm−1.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00885119
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  • 9
    Electronic Resource
    Electronic Resource
    The hydration shell of myoglobin (1992)
    Springer
    European biophysics journal 21 (1992), S. 313-320 
    Details
    ISSN: 1432-1017
    Keywords: Monte Carlo ; Crystal water ; Structure refinement
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Physics
    Notes: Abstract The space in the unit cell of a metmyoglobin crystal not occupied by myoglobin atoms was filled with water using Monte Carlo calculations. Independent calculations with different amounts of water have been performed. Structure factors were calculated using the water coordinates thus obtained and the known coordinates of the myoglobin atoms. A comparison with experimental structure factors showed that both the low and the high resolution regime could be well reproduced with 814 Monte Carlo water molecules per unit cell with a B-value of 50 Å2. The Monte Carlo water molecules yield a smaller standard R-value (0.166) than using a homogeneous electron density for the simulation of the crystal water (R = 0.212). A reciprocal space refinement of the water and the protein coordinates has been performed. Monte Carlo calculations can be used to obtain information for crystallographically invisible parts of the unit cell and yield better coordinates for the visible part in the refinement.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00188343
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  • 10
    Electronic Resource
    Electronic Resource
    Gas residence time distribution in multistage fluidised beds (1973)
    Springer
    Heat and mass transfer 6 (1973), S. 153-156 
    Details
    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 Die Verweilzeitverteilung des Gases in mehrstufigen Wirbelschichtanlagen wurde untersucht. Als Spurengas diente Helium. Bei den Versuchen wurden die Partikelkonzentration, die Zahl der Wirbelschichtstufen und deren bezogene Höhe verändert. Ein Vergleich mit den Ergebnissen von Untersuchungen an absatzweise betriebenen Wirbelschichtanlagen ergaben, daß bei kontinuierlichem Durchfluß der fluiden und der partikelförmigen Phase durch die mehrstufige Anlage das Gas die engere Verweilzeitverteilung aufweist und daher zu günstigeren Betriebsbedingungen beiträgt.
    Notes: Abstract The residence time distribution of the gas in multistage fluidised beds is studied, using Helium as tracer, for different conditions of the solids concentration, the number of stages and the height-to-diameter ratio of the stage. The results are compared with that of batch fluidisation with and without baffles and it is found that continuous fluidisation gives better flow characteristics of the gas and possesses a wider range of operation than batch fluidisation.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01462868
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