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  • Electronic Resource  (5)
  • 1975-1979  (4)
  • 1935-1939  (1)
  • 1925-1929
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  • Electronic Resource  (5)
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Year
Keywords
  • 1
    Electronic Resource
    Electronic Resource
    Individual Differences in Cognitive Abilities (1979)
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Psychology 30 (1979), S. 603-640 
    Details
    ISSN: 0066-4308
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Psychology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1146/annurev.ps.30.020179.003131
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Separation of Cytokinins from Danish Cabbage by Column Chromatography on Insoluble Polyvinylpyrrolidone (1975)
    Oxford, UK : Blackwell Publishing Ltd
    Physiologia plantarum 33 (1975), S. 0 
    Details
    ISSN: 1399-3054
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: Chromatography of partially purified extracts of Danish cabbage (Brassica oleracea var. capitata L.) heads on polyvinylpyrrolidone columns using a weak phosphate buffer indicated a cytokinin complex containing nine components active in the modified Amaranthus betacyanin bioassay. Similar elution patterns were obtained with extracts of four different cabbage varieties but varietal differences occurred in the biological activity from each component peak. Paper and thin-layer chromatography indicated the presence of both zeatin and zeatin riboside in the extracts but the other cytokinin-active components were not identified. Separation of sweet-corn extracts by this technique indicated that most of the cytokinin activity occurred in the elution volume where zeatin and zeatin riboside would normally occur.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1399-3054.1975.tb03770.x
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    The Total Solar Eclipse of June 19, 1936: Observations at Omsk (1936)
    [s.l.] : Nature Publishing Group
    Nature 138 (1936), S. 349-352 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] THE expedition of the Joint Permanent Eclipse A Committee of the Royal and Royal Astronomical Societies, and the University of Aberdeen, which was stationed at Omsk, had the good fortune to observe the total solar eclipse of June 19, 1936, under excellent conditions. The expedition consisted of ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/138349a0
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Aerodynamic roughness as a function of wind direction over asymmetric surface elements (1978)
    Springer
    Boundary layer meteorology 14 (1978), S. 323-330 
    Details
    ISSN: 1573-1472
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Notes: Abstract Wind speed and temperature profiles to a height of 8 m were recorded for 30-, 60-, and 90-min averaging times over a striated snow surface at the geographic South Pole during the austral winter of 1975. A gradient Richardson number was calculated for each averaging time to determine conditions of neutral stability under which the logarithmic wind law would hold. A log-linear regression technique was used to determine values of aerodynamic roughness height (Z 0) for those profile averages recorded in conditions of neutral stability. A plot of Z 0 as a function of average wind direction revealed a variation in Z 0 of almost three orders of magnitude, from 0.01 to 7 cm, over 120 deg of wind direction. A simple model is presented to justify the fact that aerodynamic roughness is a function of wind direction and erosion history.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00121042
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    Paper (German National Licenses)
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  • 5
    Electronic Resource
    Electronic Resource
    Spatial, non-spatial and hybrid models for scaling (1976)
    Springer
    Psychometrika 41 (1976), S. 439-463 
    Details
    ISSN: 1860-0980
    Keywords: multidimensional scaling ; hierarchical tree structures ; clustering ; geometric models ; multivariate data analysis
    Source: Springer Online Journal Archives 1860-2000
    Topics: Psychology
    Notes: Abstract In this paper, hierarchical and non-hierarchical tree structures are proposed as models of similarity data. Trees are viewed as intermediate between multidimensional scaling and simple clustering. Procedures are discussed for fitting both types of trees to data. The concept of multiple tree structures shows great promise for analyzing more complex data. Hybrid models in which multiple trees and other discrete structures are combined with continuous dimensions are discussed. Examples of the use of multiple tree structures and hybrid models are given. Extensions to the analysis of individual differences are suggested.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02296969
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    Paper (German National Licenses)
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