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  • Articles: DFG German National Licenses  (2)
  • Analytical Chemistry and Spectroscopy  (1)
  • Shaft sinking  (1)
  • 1
    Electronic Resource
    Electronic Resource
    Ground water pressure relief wells in shaft sinking (1983)
    Springer
    Geotechnical and geological engineering 1 (1983), S. 229-236 
    Details
    ISSN: 1573-1529
    Keywords: Shaft sinking ; ground water ; grouting ; wells ; permeability
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences
    Notes: Summary The pattern of pressure relief produced in a confined aquifer by a ring of vertical relief wells is conventionally evaluated by summation of simple contributions from individual wells. Where the wells surround an open excavation such as a shaft, the pattern is modified. This paper outlines the appropriate modifications. The resulting pattern of pressure relief and of shaft inflow is calculated for typical practical situations for an open circular shaft and also for a shaft protected by an annular zone of grouted ground. The examples show the influence of number and location of relief wells and the degree of permeability reduction in the annulus.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00881613
    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
    NMR studies of the configuration of the isomeric 2,3-dimethyloxetanes (1975)
    Chichester : Wiley-Blackwell
    Organic Magnetic Resonance 7 (1975), S. 554-556 
    Details
    ISSN: 0030-4921
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: The 1H and 13C NMR spectra of cis- and trans-2,3-dimethyloxetane have been re-examined and the published NMR assignments shown to be in error.
    Additional Material: 3 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/mrc.1270071107
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    Paper (German National Licenses)
    Fulltext
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