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  • 1990-1994  (4)
  • 1965-1969  (1)
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Year
  • 1
    Electronic Resource
    Electronic Resource
    Computerised method for acquisition and display of gastrointestinal motility data (1991)
    Springer
    Medical & biological engineering & computing 29 (1991), S. 304-308 
    Details
    ISSN: 1741-0444
    Keywords: Computer ; Motility ; Signal processing
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology , Medicine
    Notes: Abstract A computerised system is developed for the acquisition and display of gastrointestinal motility data which utilises a purpose developed software program called ‘PC-motil’, running on an IBM compatible microcomputer. ‘PC-motil’ displays data during collection, writes data to disk file and compresses all data at the end of a study on to a single monitor screen for convenient overview. Any area of interest, in single or multiple channels, may be selected and expanded for detailed examination. This system is tested by the recording of gastric and jejunal motility patterns of 11 healthy volunteers in fasting and fed states. All antral and jejunal migrating motor complexes (MMCs) in fasting studies, as well as all fed motility patterns were recognisable in both ‘compressed’ and ‘expanded’ form. The reproduction of motility patterns by the computer based system was indistinguishable from that of a conventional analogue chart recorder. This computerised system provides a convenient and cost-effective means of acquisition, storage and display of motility data in digital form.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02446713
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Application of AQUA and QUAX to matrix corrections in AES and XPS (1992)
    Chichester [u.a.] : Wiley-Blackwell
    Surface and Interface Analysis 19 (1992), S. 200-204 
    Details
    ISSN: 0142-2421
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Physics
    Notes: The rapid determination of surface composition from raw spectral data using interative procedures contained in the computer programs AQUA and QUAX is described. The establishment of this system of programs has required the compilation of library files of basic elemental data to enable the automatic execution of matrix calculations. This system has been designed so that the effect of different methods of calculation of attentuation length or backscatter factor on calculated matrix factor and final surface composition can be readily investigated. These calculations would be tedious without the use of the AQUA and QUAX computer surface analysis system. In this investigation matrix factors and surface compositions have been calculated for a number of materials, including NiFe and CuAg alloys. Application of the option in the QUAX program for standardless surface analysis by XPS has been investigated in GaNx(Oy) films.
    Additional Material: 7 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/sia.740190139
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  • 3
    Electronic Resource
    Electronic Resource
    Computer programs for surface analysis by SIMS and SNMS (1994)
    Chichester [u.a.] : Wiley-Blackwell
    Surface and Interface Analysis 22 (1994), S. 69-74 
    Details
    ISSN: 0142-2421
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Physics
    Notes: Programs which have been developed to enable the rapid identification and quantification of elemental and molecular ions in SIMS and SNMS (Sputtered Neutral Mass Spectrometry) are described. The efficiency of these programs in identifying elemental species and quantifying concentration has been tested with amorphous silicon nitride films. Silicon doped with boron by ion implantation and a range of cobalt-silicon alloys have been used to test quantification in SIMS by the ‘relative sensitivity factor’ (RSF) method and quantification in SNMS respectively. The concentration obtained for boron in silicon by the RSF method gave good agreement with the concentration obtained from the ion implantation flux. Accurate quantification results were also obtained from the SNMS data.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/sia.740220118
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  • 4
    Electronic Resource
    Electronic Resource
    A microbeam analytical study of a-C: H films (1990)
    Chichester [u.a.] : Wiley-Blackwell
    Surface and Interface Analysis 16 (1990), S. 497-503 
    Details
    ISSN: 0142-2421
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Physics
    Notes: Carbon films prepared by sputtering, ion beam deposition methods and chemical and physical vapour deposition methods have been studied by a range of microbeam analytical techniques. The presence of hydrogen and hydrocarbon components in these films has been established regardless of whether hydrocarbon gas is used in the deposition process. The α-carbyne and diamond modifications of carbon have been identified in some of these films. The sensitivity of these carbon films to electron and ion irradiation is discussed. The form of carbon bonding has been investigated by x-ray photoelectron spectroscopy.
    Additional Material: 10 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/sia.7401601104
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  • 5
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    Unknown
    A possible contribution to light loss in calcium tungstate and yttrium aluminium garnet laser crystals by scattering (1968)
    Institute of Physics
    Details
    Publication Date: 1968-04-01
    Print ISSN: 0022-3727
    Electronic ISSN: 1361-6463
    Topics: Physics
    Published by Institute of Physics
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