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  • 1
    Electronic Resource
    Electronic Resource
    Classification of breast tissue by electrical impedance spectroscopy (2000)
    Springer
    Medical & biological engineering & computing 38 (2000), S. 26-30 
    Details
    ISSN: 1741-0444
    Keywords: Impedance spectroscopy ; Tissue characterisation ; Data classification ; Discriminant analysis ; Breast cancer
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology , Medicine
    Notes: Abstract Electrical impedance spectroscopy is a minimally invasive technique that has clear advantages for living tissue characterisation owing to its low cost and ease of use. The present paper describes how this technique can be applied to breast tissue classification and breast cancer detection. Statistical analysis is used to derive a set of rules based on features extracted from the graphical representation of electrical impedance spectra. These rules are used hierarchically to discriminate several classes of breast tissue. Results of statistical classification obtained from a data set of 106 cases representing six classes of excised breast tissue show an overall classification efficiency of ∼92% with carcinoma discrimination 〉86%.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02344684
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Raman scattering investigations of KY3F10 (1991)
    Chichester [u.a.] : Wiley-Blackwell
    Journal of Raman Spectroscopy 22 (1991), S. 393-396 
    Details
    ISSN: 0377-0486
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: Single crystals of the fluoride compound KY3F10 (Oh5) were studied by Raman scattering from 40 to 950 K. Group theory analysis predicts 3A1g + 4Eg + 6F2g Raman-active modes, but the experimental spectra show two F2g modes missing. Over the whole temperature range the frequency shifts are negligible whereas the line widths show a strong increase with temperature. Both reversible and irreversible line width behaviour are exhibited for different temperature runs, indicating a complex microscopic phenomenon underlying the creation of defects responsible for these line widths and their interaction with the different phonon modes. An approximate activation energy for defect creation of ΔE ≍ 0.3 eV can be obtained from the temperature behaviour of the line widths. This activation energy may be connected with the high-temperature ionic conduction mentioned previously for this crystal.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jrs.1250220706
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Ueber die Brom-camphocarbonsäure (1873)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 6 (1873), S. 1092-1093 
    Details
    ISSN: 0365-9496
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.18730060264
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    Paper (German National Licenses)
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