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  • 1
    Electronic Resource
    Electronic Resource
    Dosimetry for radiation processing
    Amsterdam : Elsevier
    International Journal of Radiation Applications & Instrumentation. Part C, 28 (1986), S. 521-529 
    Details
    ISSN: 1359-0197
    Keywords: Dosimetry ; cobalt-60 ; dose measurement ; electron accelerators ; radiation ; radiation processing
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Chemistry and Pharmacology , Energy, Environment Protection, Nuclear Power Engineering , Physics
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/1359-0197(86)90182-7
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Status of radiation processing dosimetry
    Amsterdam : Elsevier
    Radiation Physics and Chemistry 42 (1993), S. 731-738 
    Details
    ISSN: 0969-806X
    Keywords: Dosimetry ; radiation ; standards ; sterilization ; traceability ; uncertainty
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Chemistry and Pharmacology , Energy, Environment Protection, Nuclear Power Engineering , Physics
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/0969-806X(93)90362-X
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Dose assurance in radiation processing plants
    Amsterdam : Elsevier
    Radiation Physics and Chemistry 22 (1983), S. 31-40 
    Details
    ISSN: 0146-5724
    Keywords: Dosimetry ; dose assurance ; quality control ; radiation processing
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Chemistry and Pharmacology , Energy, Environment Protection, Nuclear Power Engineering , Physics
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/0146-5724(83)90190-5
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Dielectric spectroscopy of mammalian cells (1993)
    Springer
    Cytotechnology 13 (1993), S. 185-193 
    Details
    ISSN: 1573-0778
    Keywords: biomass ; biotechnology ; CHO ; dielectric spectroscopy ; HeLa
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Abstract The capacitance of suspensions of CHO and HeLa cells (0.5–3×106 cells/ml) has been measured between 0.2 and 10 MHz. As frequencies decrease, there is a continuous increase in capacitance of both the cell suspension and the spent growth medium free of cells, a phenomenon which is partially attributed to an increased polarisation of the electrodes. At a given frequency, subtraction of the capacitance of the spent medium from that of the cell suspension allows one to determine the capacitance of the cells only. The intensity of this signal varies linearly with the biomass and cell size. At low frequencies such as those used in this study (0.25 MHz), where sensitivity is the highest, concentrations as low as 0.5×106 cells/ml can be accurately measured. Suggestions are made how to make these measures on-line, non-invasive and in real time.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00749814
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    Paper (German National Licenses)
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  • 5
    Electronic Resource
    Electronic Resource
    Dielectric spectroscopy of mammalian cells (1993)
    Springer
    Cytotechnology 13 (1993), S. 195-202 
    Details
    ISSN: 1573-0778
    Keywords: dielectric spectroscopy ; HTC ; microbeads ; pulse spectroscopy
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Abstract Low-frequency dielectric spectroscopy has been usedin situ, i.e. while the cells are still attached to their microsupport, to monitor the changes of biomass accompanying the growth of anchorage-dependent cells. This method, when compared to Aperture Impedance Pulse Spectroscopy (also called electronic sizing), is characterized by a somewhat lower degree of resolution. Suggestions are made on how to determine the capacitance of the spent growth medium alone, still keeping the probe inserted in the bioreactor. This will make dielectric spectroscopy the first trulyin situ, on-line, in real time, non-invasive measure of the biomass.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00749815
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    Paper (German National Licenses)
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