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  • 1
    Electronic Resource
    Electronic Resource
    Computer control for continuous cultivation ofSaccharomyces cerevisiae (1986)
    Springer
    Applied microbiology and biotechnology 24 (1986), S. 113-116 
    Details
    ISSN: 1432-0614
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Summary An on-line respiratory quotient control system has been developed for the continuous cultivation of baker's yeast. This system is based on moving identification of the microbial dynamics. The optimal dilution rate that was selected as the control variable was determined by minimizing a performance index. Without resorting to complicated microbial analysis, a simple and practical moving model is obtained by continually updating the input and output data. The experimental results indicate the satisfactory controllability of the present system and the possible extention of the proposed method to other bioprocesses.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00938780
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  • 2
    Electronic Resource
    Electronic Resource
    Computer control for continuous cultivation ofSaccharomyces cerevisiae (1986)
    Springer
    Applied microbiology and biotechnology 24 (1986), S. 113-116 
    Details
    ISSN: 1432-0614
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Summary An on-line respiratory quotient control system has been developed for the continuous cultivation of baker's yeast. This system is based on moving identification of the microbial dynamics. The optimal dilution rate that was selected as the control variable was determined by minimizing a performance index. Without resorting to complicated microbial analysis, a simple and practical moving model is obtained by continually updating the input and output data. The experimental results indicate the satisfactory controllability of the present system and the possible extention of the proposed method to other bioprocesses.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01982552
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  • 3
    Electronic Resource
    Electronic Resource
    Selective permeation of CO2 and O2 by membrane of poly(maleic acid-co-styrene)-poly(ethylene glycol) interpolymer complexes (1988)
    Springer
    Polymer bulletin 20 (1988), S. 521-524 
    Details
    ISSN: 1436-2449
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Summary Contrary to most polymer membranes, the membrane composed of poly(maleic acid-co-styrene)-poly(ethylene glycol)(PMS-PEG) complexes gives separation factor for CO2 to O2 smaller than 1. While the unit molar ratio reaches 1, the separation factor for CO2 to O2 exhibits a minium. The temperature dependence of CO2 permeability is larger than O2 permeability, i.e. the permeation activation energy of CO2 (16 kcal/mol) is larger than that of O2 (3 kcal/mol). The separation factor for CO2 to O2 increases with increasing temperature. A tentative explanation is proposed for the results.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00263666
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  • 4
    Electronic Resource
    Electronic Resource
    System performance in rain in a radome-enclosed environment (1986)
    Springer
    International journal of infrared and millimeter waves 7 (1986), S. 267-289 
    Details
    ISSN: 1572-9559
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Computer modeling and analysis techniques have been established to evaluate performance during rain, in a radome-enclosed system. Electromagnetic transmission line theory using raytracing techniques is presented to compute transmission loss. Comparisons between theory and measured results are documented. Variations in water film thickness versus look angle and the resulting effect on performance are discussed. Other performance effects in rain, such as depolarization and noise temperature, are included in the analysis. The differences in performance using hydrophobic and non-hydrophobic materials can easily be predicted. Hydrophobic membrane materials are available for use with a radome, which yield excellent electromagnetic performance, even at mm wave frequencies. Recent tests are discussed which substantiate enhanced radome performance during rain.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01013271
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  • 5
    Electronic Resource
    Electronic Resource
    System feasibility study of a microwave/millimeter-wave radar for space debris tracking (1989)
    Springer
    International journal of infrared and millimeter waves 10 (1989), S. 1-19 
    Details
    ISSN: 1572-9559
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract A 35 GHz millimeter-wave radar system has been studied for space debris tracking. The objective is to track the particles ranging in size from 4 mm to 80 mm up to a range of 25 km. The system requires various state-of-the-art technologies including phased arrays, monopulse tracking, pulse compression, high power transmitters, low noise receivers, and pulse integration signal processing techniques.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01009113
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  • 6
    Electronic Resource
    Electronic Resource
    Design and performance of millimeter-wave end-coupled bandpass filters (1985)
    Springer
    International journal of infrared and millimeter waves 6 (1985), S. 497-509 
    Details
    ISSN: 1572-9559
    Keywords: end-coupled bandpass filter ; millimeter-wave filters ; waveguide-to-microstrip transition
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The design and performance of millimeter-wave microstrip/suspended-stripline end-coupled bandpass filters are presented. Filters in Ka-band (26.5 to 40 GHz) and W-band (75 to 110 GHz) using suspended-stripline and microstrip have been designed. Good agreement between the experimental results and those predicted theoretically was observed. Measured passband insertion losses of less than 1 and 0.5 dB have been achieved in W- and Ka-band, respectively. An extremely wideband waveguide-to-microstrip transition with an insertion loss of 0.25 dB over the full W-band is also presented.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01009670
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  • 7
    Electronic Resource
    Electronic Resource
    On the design and performance of printed-circuit filters and diplexers for millimeter-wave integrated circuits (1986)
    Springer
    International journal of infrared and millimeter waves 7 (1986), S. 971-998 
    Details
    ISSN: 1572-9559
    Keywords: Millimeter-wave filters and diplexers ; microstrip/suspended stripline and finline lowpass filters ; end-coupled and finline bandpass filters ; spurline bandstop filters ; finline diplexers
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract This paper describes the design and performance of various millimeter-wave printed-circuit filters and diplexers. These components include microstrip/suspended stripline and finline lowpass filters, capacitive-gap and inductive-iris-coupled bandpass filters, spurline bandstop filters, and finline diplexers. State-of-the-art performances from Ka-band (26.5 to 40 GHz) to D-band (110 to 170 GHz) have been obtained. Agreement between the measured and calculated results was also achieved.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01026687
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  • 8
    Electronic Resource
    Electronic Resource
    Millimeter-wave microstrip solid-state sources and amplifiers (1986)
    Springer
    International journal of infrared and millimeter waves 7 (1986), S. 729-747 
    Details
    ISSN: 1572-9559
    Keywords: microstrip components ; IMPATT oscillators ; IMPATT amplifiers ; Gunn oscillators ; injection-locked amplifiers
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The past decade has seen increased applications for millimeter waves both in commercial and defense activities. Conventional millimeter-wave solid-satate sources were built in waveguide, suspended stripline, and finline. Fabricating these components in microstrip provides advantages of light weight, small size, and low cost. This paper summarizes the recent developments in millimeter-wave microstrip solid-state sources and amplifiers. The design and performance of these components will be presented.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01014380
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  • 9
    Electronic Resource
    Electronic Resource
    A high efficiency 46 to 92 GHz all microstrip frequency doubler (1988)
    Springer
    International journal of infrared and millimeter waves 9 (1988), S. 825-835 
    Details
    ISSN: 1572-9559
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Using packaged GaAs varactor diodes, a high efficiency 46 to 92 GHz frequency doubler has been developed. Microstrip circuits have been used to match the input and output impedances presented by the diode. A conversion loss of 8 to 10 dB was measured. This doubler circuit is useful for W-band (75 to 110 GHz) integrated circuit receivers and transceivers. The use of microstrip circuit can drastically reduce the fabrication cost in addition to size and weight.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01010624
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  • 10
    Electronic Resource
    Electronic Resource
    Gas permeation in poly[(butyl methacrylate)-co-(4-vinylpyridine)] membrane containing transition metal ions (1989)
    Basel : Wiley-Blackwell
    Die Makromolekulare Chemie, Rapid Communications 10 (1989), S. 145-147 
    Details
    ISSN: 0173-2803
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Additional Material: 1 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/marc.1989.030100306
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