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    Wyświetlanie 1-4 z 4
    Tytuł:
    Effects of Ultrasonic Noise on the Human Body - A Bibliographic Review
    Autorzy:
    Smagowska, B.
    Pawlaczyk-Łuszczyńska, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/90858.pdf
    Data publikacji:
    2013
    Wydawca:
    Centralny Instytut Ochrony Pracy
    Tematy:
    ultrasonic noise
    effect
    working environment
    hałas
    hałas ultradźwiękowy
    środowisko pracy
    oddziaływanie hałasu
    Opis:
    Industrial noise in the working environment has adverse effects on human hearing; literature and private studies confirm that. It has been determined that significant changes in the hearing threshold level occur in the high frequency audiometry, i.e., in the 8-20 kHz frequency range. Therefore, it is important to determine the effect of ultrasonic noise (10-40 kHz) on the human body in the working environment. This review describes hearing and nonhearing effects (thermal effects, subjective symptoms and functional changes ) of the exposure to noise emitted by ultrasound devices. Many countries have standard health exposure limits to prevent effects of the exposure to ultrasonic noise in the working environment.
    Źródło:
    International Journal of Occupational Safety and Ergonomics; 2013, 19, 2; 195-202
    1080-3548
    Pojawia się w:
    International Journal of Occupational Safety and Ergonomics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Theoretical Predictions and Actual Hearing Threshold Levels in Workers Exposed to Ultrasonic Noise of Impulsive Character—A Pilot Study
    Autorzy:
    Pawlaczyk-Łuszczyńska, M.
    Dudarewicz, A.
    Śliwińska-Kowalska, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/90926.pdf
    Data publikacji:
    2007
    Wydawca:
    Centralny Instytut Ochrony Pracy
    Tematy:
    ultrasonic noise
    noise measurements
    pure-tone audiometry
    hearing threshold levels
    Opis:
    Results of standard pure-tone audiom etry (PTA) were collected from 25 workers, mainly females, aged 23–58 years, exposed for 2–13 years to ultrasonic noise emitted by ultrasonic welders. Hearing tests were completed by evaluation of exposure to ultrasonic noise. The subjects’ actual audiometric hearing threshold levels (HTLs) were compared with theoretical predictions calculated according to ISO 1999:1990. In 60% of cases sound pressure levels in the 10–40 kHz 1/3-octave bands at workstands exceeded Polish exposure limits for ultrasonic noise. Our comparison of predicted and measured HTLs suggests that the ISO 1999:1990 method, intended for audible noise, might also make it possible to predict reliably permanent hearing loss (in the 2 000–6 000 Hz frequency range) after exposure to ultrasonic noise. No significant progress of hearing impairment (assessed using PTA) in the operators of ultrasonic welders was noted. Nevertheless, further studies on the hearing status of workers exposed to ultrasonic noise are needed.
    Źródło:
    International Journal of Occupational Safety and Ergonomics; 2007, 13, 4; 409--418
    1080-3548
    Pojawia się w:
    International Journal of Occupational Safety and Ergonomics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Evaluation of Sound Exposure and Risk of Hearing Impairment in Orchestral Musicians
    Autorzy:
    Pawlaczyk-Łuszczyńska, M.
    Dudarewicz, A.
    Zamojska, M.
    Śliwinska-Kowalska, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/90038.pdf
    Data publikacji:
    2011
    Wydawca:
    Centralny Instytut Ochrony Pracy
    Tematy:
    musicians
    exposure to orchestral noise
    risk of noise-induced hearing loss
    Opis:
    This study aimed to assess exposure to sound and the risk of noise-induced hearing loss (NIHL) in orchestral musicians. Sound pressure level was measured in 1 opera and 3 symphony orchestras; questionnaires were filled in. On the basis of that data, the risk of NIHL was assessed according to Standard No. ISO 1999:1990. Classical orchestral musicians are usually exposed to sound at equivalent continuous A-weighted sound pressure levels of 81−90 dB (10th−90th percentiles), for 20−45 h (10th−90th percentiles) per week. Occupational exposure to such sound levels over 40 years of employment might cause hearing loss (expressed as a mean hearing threshold level at 2, 3, 4 kHz exceeding 35 dB) of up to 26%. Playing the horn, trumpet, tuba and percussion carries the highest risk (over 20%).
    Źródło:
    International Journal of Occupational Safety and Ergonomics; 2011, 17, 3; 255-269
    1080-3548
    Pojawia się w:
    International Journal of Occupational Safety and Ergonomics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Self-Assessment of Hearing Status and Risk of Noise-Induced Hearing Loss in Workers in a Rolling Stock Plant
    Autorzy:
    Pawlaczyk-Łuszczyńska, M.
    Dudarewicz, A.
    Zamojska, M.
    Śliwinska-Kowalska, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/90180.pdf
    Data publikacji:
    2012
    Wydawca:
    Centralny Instytut Ochrony Pracy
    Tematy:
    self-assessment of hearing ability
    occupational exposure to noise
    risk factors for noise-induced hearing loss (NIHL)
    evaluation of NIHL risk
    Opis:
    Noise measurements and questionnaire inquiries were carried out for 124 workers of a rolling stock plant to develop a hearing conservation program. On the basis of that data, the risk of noise-induced hearing loss (NIHL) was evaluated. Additionally, the workers’ hearing ability was assessed with the (modified) Amsterdam inventory for auditory disability and handicap, (m)AIADH. The workers had been exposed to noise at A-weighted daily noise exposure levels of 74–110 dB for 1-40 years. Almost one third of the workers complained of hearing impairment and the (m)AIADH results showed some hearing difficulties in over half of them. The estimated risk of hearing loss over 25 dB in the frequency range of 3-6 kHz was 41–50% when the standard method of predicting NIHL specified in Standard No. ISO 1999:1990 was used. This risk increased to 50-67% when noise impulsiveness, coexposure to organic solvents, elevated blood pressure and smoking were included in calculations.
    Źródło:
    International Journal of Occupational Safety and Ergonomics; 2012, 18, 2; 279-296
    1080-3548
    Pojawia się w:
    International Journal of Occupational Safety and Ergonomics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-4 z 4

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