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  • Electronic Resource  (5)
  • 1980-1984  (1)
  • 1955-1959  (3)
  • 1900-1904  (1)
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Material
  • Electronic Resource  (5)
Years
Year
  • 1
    Electronic Resource
    Electronic Resource
    Aging of Silica-Alumina Cracking Catalyst. I. Kinetics of Structural Changes by Eeat and Steam (1957)
    s.l. : American Chemical Society
    The @journal of physical chemistry 〈Washington, DC〉 61 (1957), S. 714-722 
    Details
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/j150552a003
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Determination of Fluorine in Phosphoro- and Phosphonofluoridates (1959)
    s.l. : American Chemical Society
    Analytical chemistry 31 (1959), S. 1970-1974 
    Details
    ISSN: 1520-6882
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/ac60156a023
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    The Swimming Instinct (1901)
    [s.l.] : Nature Publishing Group
    Nature 64 (1901), S. 208-208 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] I HAVE just tested the inherited powers of swimming in newly hatched pheasants. I find that when placed in tepid water, at the age of about thirty hours, they swim easily with well-coordinated leg-movements and show very little signs of ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/064208a0
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    The effect of sequence of instruction on students' cognitive preferences and recall in the context of a problem-oriented method of teaching (1984)
    Springer
    Instructional science 13 (1984), S. 329-345 
    Details
    ISSN: 1573-1952
    Source: Springer Online Journal Archives 1860-2000
    Topics: Education
    Notes: Abstract This experiment investigated two possible sequences in which biochemical theory and the clinical applications of such theory can be presented to pre-clinical medical students. The dependent variables were the students' cognitive preferences and their ability to recall the contents of the instruction. Seventy-two students were randomly allocated to either a Theory-to-application or an Application-to-theory condition. The results indicated that the Application-to-theory sequence of instruction produced a significantly greater preference for being taught the specific facts of pre-clinical medical science, as opposed to being taught about the clinical applications. However, this was achieved at the expense of a significantly reduced ability to actually recall the theory which was taught.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00117575
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    Paper (German National Licenses)
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  • 5
    Electronic Resource
    Electronic Resource
    Time studies of ionization processes (1956)
    Springer
    Flow, turbulence and combustion 5 (1956), S. 18-22 
    Details
    ISSN: 1573-1987
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Summary Measurements of the temporal growth of ionization between parallel plane electrodes in hydrogen have been made. The results show that for low values (∼ 40 V/cm mm Hg) of the ratio of electric fieldE to gas pressurep the growth times can be short (≤ 1Μs for over-voltagesδ V ∼ 1 %) while at values ofE/p ∼ 300 V/cm mm Hg the times are of the order of milli seconds withδV ∼ 5%. Comparison of the experimental data with Davidson's mathematical analysis of current growth based upon the action of primary and secondary ionization processes shows that the relative significance of the possible secondary processes changes asE/p is altered. For the low values ofE/p, the predominant secondary process contributing to the growth was found to be photoelectric emission from the cathode, but with increasing values ofE/p the role of positive ion interaction with the cathode becomes increasingly important. No single secondary process was exclusively operating in any of the conditions examined.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02069962
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    Paper (German National Licenses)
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