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  • Walter de Gruyter GmbH  (3)
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  • Walter de Gruyter GmbH  (3)
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  • 1
    Online Resource
    Online Resource
    What kind of phonation causes the strongest vocal fold collision? – A hemi-larynx phonation contact pressure study
    Walter de Gruyter GmbH ; 2023
    In:  tm - Technisches Messen Vol. 0, No. 0 ( 2023-06-21)
    Details
    In: tm - Technisches Messen, Walter de Gruyter GmbH, Vol. 0, No. 0 ( 2023-06-21)
    Abstract: This paper presents a measurement setup which is able to measure the distribution of small scale pressure on an area of 15.2 mm × 30.4 mm with a sample rate up to 1.2 kHz. It was used to investigate the contact pressures of vocal folds during phonation. This was performed in ex vivo experiments of 11 porcine larynges. The contact pressure at the medial surface and other phonation parameters, as the glottal resistance and the closing velocity of the vocal fold, were measured at different adduction and elongation levels and air flow rates. A statistical analysis was carried out. It could be shown that the contact pressure rises, when the vocal fold is manipulated or when the flow rate is increased.
    Type of Medium: Online Resource
    ISSN: 0171-8096 , 2196-7113
    URL: Article
    DOI: 10.1515/teme-2023-0002
    RVK:
    ZG 1100
    RVK:
    ZS 0001
    Language: English
    Publisher: Walter de Gruyter GmbH
    Publication Date: 2023
    detail.hit.zdb_id: 2025790-9
    SSG: 15,3
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    Online Resource
  • 2
    Online Resource
    Online Resource
    Low-cost electromyograph combined with markerless pose detection
    Walter de Gruyter GmbH ; 2021
    In:  tm - Technisches Messen Vol. 88, No. s1 ( 2021-09-27), p. s71-s76
    Details
    In: tm - Technisches Messen, Walter de Gruyter GmbH, Vol. 88, No. s1 ( 2021-09-27), p. s71-s76
    Abstract: This papers presents a low-cost electromyograph combined with marker-less pose detection using computer vision. The developed and build three channel electromyograph is tested by measuring the muscle activity of one leg, while the subject is performing squats. Simultaneously, a camera records the exercise and subsequently the image data is evaluated by OpenPose. We could show that this simple setup enables the user to evaluate the muscle activity of three independent muscles as function of the knee angle. These results are in good agreement to the expected muscle activity. The sample-rate of the EMG device is 2 kHz. The overall cost of the developed device is under 100 €. To our knowledge, this is the first work combining these two methods for dynamic exercises. The method is well customizable for other sports due to the battery powered device and its handy size.
    Type of Medium: Online Resource
    ISSN: 0171-8096 , 2196-7113
    URL: Article
    DOI: 10.1515/teme-2021-0066
    RVK:
    ZG 1100
    RVK:
    ZS 0001
    Language: English
    Publisher: Walter de Gruyter GmbH
    Publication Date: 2021
    detail.hit.zdb_id: 2025790-9
    SSG: 15,3
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    Online Resource
  • 3
    Online Resource
    Online Resource
    Comparison of Multiple Moisture-Measurement Techniques Applied on Biological Tissue
    Walter de Gruyter GmbH ; 2021
    In:  tm - Technisches Messen Vol. 88, No. s1 ( 2021-09-27), p. s101-s106
    Details
    In: tm - Technisches Messen, Walter de Gruyter GmbH, Vol. 88, No. s1 ( 2021-09-27), p. s101-s106
    Abstract: This papers presents a measurement setup which combines three different methods indicating the moisture fraction of a sample. This is managed by measuring the weight, the absolute electrical impedance with a harmonic excitation between 10 Hz to 1000 Hz and the surface reflectance of the sample with a spectroscope between 160nm to 1100nm. The measurements are carried out over 50 h every 5 min using a piece of porcine meat. The results show clear evidences that the dehydration occurs on the surface until the water inside is diffused to the surface completely. This can be seen on significant wavelengths of absorption bands in the reflected spectrum like 540nm, 575nm and 970nm (oxyhaemobglobin and water) and in the impedance measurement that are both set into ratio with the weight loss of the sample.
    Type of Medium: Online Resource
    ISSN: 0171-8096 , 2196-7113
    URL: Article
    DOI: 10.1515/teme-2021-0065
    RVK:
    ZG 1100
    RVK:
    ZS 0001
    Language: English
    Publisher: Walter de Gruyter GmbH
    Publication Date: 2021
    detail.hit.zdb_id: 2025790-9
    SSG: 15,3
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    Online Resource
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