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  • 1
    Electronic Resource
    Electronic Resource
    The Coproduction of Race and Class in Brazil and the United States (2002)
    Oxford, UK and Boston, USA : Blackwell Publishers Ltd
    Antipode 34 (2002), S. 0 
    Details
    ISSN: 1467-8330
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Geography
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/1467-8330.00234
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  • 2
    Electronic Resource
    Electronic Resource
    Waves, turbulence, solar convection and ozone (1981)
    [s.l.] : Nature Publishing Group
    Nature 290 (1981), S. 288-289 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] THE Earth's atmosphere and oceans are increasingly being used as an outdoor laboratory, not only providing information about the behaviour of our environment but also insight into certain difficult, unsolved problems in fluid dynamics. These involve wave-like and turbulent fluid motions at huge ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/290288a0
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  • 3
    Electronic Resource
    Electronic Resource
    Microcredit tackles both poverty and birthrate (2002)
    [s.l.] : Nature Publishing Group
    Nature 418 (2002), S. 583-583 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Sir It is worrying that population growth should be absent from the agenda of the forthcoming United Nations World Summit on Sustainable Development, as outlined by Wolfgang Lutz et al. in Correspondence (Nature 418, 17; ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/418583b
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    Paper (German National Licenses)
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  • 4
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    Unknown
    Age differences in memory for item-identity and occupied-location information (1989)
    Urbana, etc. : Periodicals Archive Online (PAO)
    American Journal of Psychology. 102:1 (1989:Spring) 53 
    Details
    ISSN: 0002-9556
    Topics: Psychology
    URL: http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&res_dat=xri:pao:&rft_dat=xri:pao:article:1016-1989-102-01-000004
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  • 5
    Electronic Resource
    Electronic Resource
    Categorical processing of visual stimuli in relation to geometrical, graphemic, or lexical context (1991)
    Springer
    Psychological research 53 (1991), S. 142-148 
    Details
    ISSN: 1430-2772
    Source: Springer Online Journal Archives 1860-2000
    Topics: Psychology
    Notes: Summary Categorical perception was first demonstrated in studies of speech sounds (Liberman, Harris, Hoffman, & Griffith, 1957). The present work employed visual stimuli to explore categorical responding in relation to the context in which the stimuli were embedded. The target stimulus was a vertical line whose length was varied from 20 to 31 min (approximately) in steps of 1.2 min. Experiment 1 examined the effect of a geometrical context on the subjects' ability to discriminate between pairs of lines. The context improved performance, but produced no evidence of categorical responding. In Experiment 2 a graphemic context depressed performance, but failed to show clear evidence of categorization. By contrast, strong evidence of categorical responding was obtained in Experiment 3, in which the graphemes used in Experiment 2 were embedded in meaningful words. From this pattern of results it is argued that categorical responding is reflective not of relatively peripheral perceptual activity, but of higher-order decision processes.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01371822
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  • 6
    Electronic Resource
    Electronic Resource
    On stationary topography-induced rossby-wave patterns in a barotropic zonal current (1968)
    Springer
    Ocean dynamics 21 (1968), S. 203-214 
    Details
    ISSN: 1616-7228
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Description / Table of Contents: Zusammenfassung Die vorliegende Arbeit befaßt sich mit der Änderung einer einheitlichen, zonalen, reibungslosen, barotropischen Strömung in einer beta-Ebene infolge eines topographischen oder eines anderen stationären Störeffekts. Einfache Beispiele zeigen, daß die zonale Strömung auf verschiedene qualitativ unterschiedliche Weise durch die Topographie beeinflußt werden kann.
    Abstract: Résumé Les présentes remarques se rapportent à la modification — du fait d'une caractéristique topographique du fond ou de tout autre effet perturbateur fixe — d'un courant barotropique sans frottement, zonal, uniforme dans un plan-beta. Des exemples simples illustrent le fait qu'il y a plusieurs manières, qualitativement distinctes, dont le courant zonal peut être affecté par la topographie.
    Notes: Summary The present remarks concern the modification, by a bottom-topographical feature or other stationary perturbing effect, of a uniform zonal frictionless barotropic current in a betaplane. Simple examples illustrate the fact that there are several qualitatively distinct ways in which the zonal current can be affected by the topography.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02232686
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  • 7
    Electronic Resource
    Electronic Resource
    Dynamic behaviour and simulation of a liquid-liquid extraction columnPaper presented at the “Jahrestreffen der Verfahreence-Ingenieure”, Stuttgart, October 3 to 5, 1990.Dedicated to Professor Dr.h.c. Dieter Behrens on the occasion of his 65th birthday (1991)
    Weinheim : Wiley-Blackwell
    Chemical Engineering & Technology - CET 14 (1991), S. 301-306 
    Details
    ISSN: 0930-7516
    Keywords: Chemistry ; Industrial Chemistry and Chemical Engineering
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Dynamic behaviour of a stirred liquid-liquid extraction column was studied experimentally. Various input variables of the column were varied stepwise and the resulting variations in the system and output variables were measured. In addition to experimental work, a computer model was developed on the basis of the dispersion model to simulate the dynamic behaviour of the extractor. This model forms a component program of the dynamic process simulator DIVA, developed at the TU Stuttgart. The experiments showed that the hydrodynamic parameters exhibit no significant dynamic behaviour of their own. Therefore, changes occurring in these parameters closely follow variations in input and system variables. As a result, steady-state relationships for the calculation of flow parameters could be used in the simulation program. The simulator satisfactorily reproduced the experimental results for a number of disturbances. However, this was not always the case. As shown in the following, the model did not take into account the column level controller which, under certain conditions, exerts a very strong influence on the column's dynamic behaviour. As a result, larger differences occurred between experimental and simulated data. This influence on the extractor's dynamic behaviour can, however, be eliminated by a simple modification of the level controller arrangement.
    Additional Material: 6 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/ceat.270140503
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