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  • 1
    Electronic Resource
    Electronic Resource
    Microbial influence on the sorption of137Cs onto materials relevant to the geological disposal of radioactive waste (1991)
    Springer
    Cellular and molecular life sciences 47 (1991), S. 549-552 
    Details
    ISSN: 1420-9071
    Keywords: Microbiology ; radioactive waste ; geology ; radionuclide sorption ; 137Cs
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary A major concern in the geological containment of radioactive wastes is the speed of movement of radionuclides from the repository, after their eventual leaching and release, into the geosphere and finally into the biosphere. Radionuclide sorption onto the host rock is an important retarding mechanism. Experimental evidence shows that the presence of microbes in this environment influences the sorption capabilities of the host rock. Their presence can decrease the amount of retardation of137Cs, a common radionuclide in radioactive waste, by the solid phase. Sorption methods and data analysis procedures are presented and the implications for radioactive waste disposal assessments are discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01949876
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Measurements on Gallium Arsenide building blocks and implications for analog IC design (1991)
    Springer
    Analog integrated circuits and signal processing 1 (1991), S. 137-149 
    Details
    ISSN: 1573-1979
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology
    Notes: Abstract Gallium Arsenide technology has offered the promise of very high frequency operation but its potential has not been fully realized due to technological problems which have revealed themselves in undesirable and unpredictable device characteristics. This article presents measured DC characteristics for some current mirrors and transconductors which are believed to be important building blocks for future high-speed GaAs communication circuits. The results presented validate the building block designs within the measurement limitations and show that technology improvements are now producing devices of sufficient quality to allow a sophisticated approach to GaAs circuit designs.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00161306
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
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