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    Wyświetlanie 1-7 z 7
    Tytuł:
    Noise-Induced Hearing Loss in Professional Orchestral Musicians
    Autorzy:
    Pawlaczyk-Łuszczyńska, M.
    Zamojska, M.
    Dudarewicz, A.
    Zaborowski, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/177859.pdf
    Data publikacji:
    2013
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    orchestral musicians
    exposure to orchestral noise
    hearing
    risk of noise-induced hearing loss
    Opis:
    The overall purpose of this study was to assess hearing status in professional orchestral musicians. Standard pure-tone audiometry (PTA) and transient-evoked otoacoustic emissions (TEOAEs) were per- formed in 126 orchestral musicians. Occupational and non-occupational risk factors for noise-induced hearing loss (NIHL) were identified in questionnaire inquiry. Data on sound pressure levels produced by various groups of instruments were also collected and analyzed. Measured hearing threshold levels (HTLs) were compared with the theoretical predictions calculated according to ISO 1999 (1990). Musicians were exposed to excessive sound at weekly noise exposure levels of for 81-100 dB (mean: 86.6±4.0 dB) for 5-48 years (mean: 24.0±10.7 years). Most of them (95%) had hearing corresponds to grade 0 of hearing impairment (mean hearing threshold level at 500, 1000, 2000 and 4000 Hz lower than 25 dB). However, high frequency notched audiograms typical for noise-induced hearing loss were found in 35% of cases. Simultaneously, about 35% of audiograms showed typical for NIHL high frequency notches (mainly occurring at 6000 Hz). When analyzing the impact of age, gender and noise exposure on hearing test results both PTA and TEOAE consistently showed better hearing in females vs. males, younger vs. older musicians. But higher exposure to orchestral noise was not associated with poorer hearing tests results. The musician’s audiometric hearing threshold levels were poorer than equivalent non-noise-exposed population and better (at 3000 and 4000 Hz) than expected for noise-exposed population according to ISO 1999 (1990). Thus, music impairs hearing of orchestral musicians, but less than expected from noise exposure.
    Źródło:
    Archives of Acoustics; 2013, 38, 2; 223-234
    0137-5075
    Pojawia się w:
    Archives of Acoustics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Annoyance Related to Wind Turbine Noise
    Autorzy:
    Pawlaczyk-Łuszczyńska, M.
    Dudarewicz, A.
    Zaborowski, K.
    Zamojska-Daniszewska, M.
    Waszkowska, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/178067.pdf
    Data publikacji:
    2014
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    wind turbines
    noise
    annoyance
    Opis:
    A questionnaire inquiry on response to wind turbine noise was carried out on 361 subjects living in the vicinity of 8 wind farms. Current mental health status of respondents was assessed using Goldberg General Health Questionnaire GHQ-12. For areas where respondents lived, A-weighted sound pressure levels (SPLs) were calculated as the sum of the contributions from the wind power plants in the specific area. Generally, 33.0% of respondents were annoyed outdoors by wind turbine noise at the calculated A-weighted SPL of 31–50 dB, while indoors the noise was annoying to 21.3% of them. The propor- tion of subjects evaluating the noise produced by operative wind turbines as annoying decreased with increasing the distance from the nearest wind turbine (27.6% at the distance of 400–800 m vs 14.3% at the distance above 800 m, p < 0.016). On the other hand, the higher was the noise level, the greater was the percentage of annoyed respondents (14.0% at SPL up to 40 dB vs 28.1% at SPL of 40–45 dB, p < 0.016). Besides noise and distance categories, subjective factors, such as general attitude to wind turbines, sensitivity to landscape littering and current mental health status, were found to have significant impact on the perceived annoyance. About 50% of variance in annoyance rating might be explained by the aforesaid subjective factors.
    Źródło:
    Archives of Acoustics; 2014, 39, 1; 89-102
    0137-5075
    Pojawia się w:
    Archives of Acoustics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Hearing Status in Young People Using Portable Audio Players
    Autorzy:
    Pawlaczyk-Łuszczyńska, M.
    Zaborowski, K.
    Zamojska-Daniszewska, M.
    Rutkowska-Kaczmarek, P.
    Dudarewicz, A.
    Śliwinska-Kowalska, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/176501.pdf
    Data publikacji:
    2017
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    portable audio players
    PAPs
    pure-tone audiometry
    transient-evoked otoacoustic emissions
    TEOAEs
    hearing threshold levels
    high-frequency notches
    noise-induced hearing loss
    Opis:
    The aim of this study was to evaluate the hearing status in young adults using portable audio players (PAPs) in relation to their listening habits. The study included 58 subjects, aged 22.8±2.8 years, non-occupationally exposed to noise. Questionnaire inquiry aimed at collecting personal data, the information on PAPs usage habits, self-assessment of hearing status and identification of risk factors for noise-induced hearing loss (NIHL) were performed in study subjects. Hearing tests included pure-tone audiometry (PTA) and transient-evoked optoacoustic emission (TEOAE). All subjects were PAPs users. Depending on listening habits they were divided into the subgroups of “frequent” users (>1 h/day) and “non-frequent” users (≤1 h/day). There were no significant differences between subgroups in prevalence of NIHL risk factors and self-assessment of hearing status. However, frequent users more often complained of tinnitus and hyperacusis. Majority (81.9 %) of participants had normal hearing. Nevertheless, 6.9 % of audiograms showed high-frequency notches typical for NIHL. Both, the PTA and TEOAE indicated worse hearing in non-frequent users compared to frequent users. No significant differences in prevalence of high-frequency notches between subgroups were noted. The outcomes do not support some previous studies results that the excessive exposure to music listened through PAPs might result in accelerating of development of NIHL loss in young adults.
    Źródło:
    Archives of Acoustics; 2017, 42, 1; 113-120
    0137-5075
    Pojawia się w:
    Archives of Acoustics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The Hearing Threshold of Employees Exposed to Noise Generated by the Low-Frequency Ultrasonic Welding Devices
    Autorzy:
    Dudarewicz, A.
    Zaborowski, K.
    Rutkowska-Kaczmarek, P.
    Zamojska-Daniszewska, M.
    Śliwińska-Kowalska, M.
    Zamysłowska-Szmytke, E.
    Pawlaczyk-Łuszczyńska, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/178077.pdf
    Data publikacji:
    2017
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    noise-induced hearing loss
    noise
    ultrasonic noise
    occupational exposure
    Opis:
    The aim of the study was to assess the hearing threshold levels (HTLs) in employees exposed to noise generated by low-frequency ultrasonic technological equipment in comparison with the HTLs of workers exposed to audible noise at the similar A-weighted equivalent-continuous sound pressure level. The study includes measurements of ultrasonic and audible noise at workplaces and hearing tests, i.e. conventional pure-tone audiometry and extended high-frequency audiometry. The study group comprised 90 workers, aged 41.4 ± 10.0 years (mean±SD), exposed for 17.3 ± 9.8 years to noise generated by ultrasonic devices at mean daily noise exposure level (‹LEX,8h›) of 80.6 ± 2.9 dB. The reference group consists of 156 subjects, exposed to industrial noise (without ultrasonic components) at similar A-weighted equivalent-continuous sound pressure level (‹LEX,8h› = 81.8 ± 2.7 dB), adjusted according to age (39.8 ± 7.7 years), gender and job seniority (14.0 ± 7.0 years). This group was selected from database collected in the Nofer Institute of Occupational Medicine. Audiometric hearing threshold levels in the frequency range of 0.5–6 kHz were similar in both groups, but in the frequency range of 8–12.5 kHz they were higher in the group of employees exposed to ultrasonic noise. The findings suggest that differences in the hearing threshold (at high frequencies) in analyzed groups may be due to differences in spectral composition of noise and show the need to continue the undertaken studies.
    Źródło:
    Archives of Acoustics; 2017, 42, 2; 199-205
    0137-5075
    Pojawia się w:
    Archives of Acoustics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Mobile driver assistance system based on data from the diagnostic port of vehicle
    Autorzy:
    Iwan, S.
    Małecki, K.
    Zaborowski, Ł.
    Nurnberg, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/393343.pdf
    Data publikacji:
    2018
    Wydawca:
    Polskie Stowarzyszenie Telematyki Transportu
    Tematy:
    ADAS
    diagnostic
    mobile application
    diagnostyka
    aplikacja mobilna
    Opis:
    The article presents one application from the ADAS (Advanced Driver Assistance Systems) group of systems, which enables the reading of parameters from the module connected to the diagnostic port in the vehicle. The developed application enables better control of engine operation and supports the driver in the field of, among others indication of currently running gear and suggestion of switching on the higher or lower gear depending on the engine parameters read. The suggestion of changing gears is shown graphically and sonically. The application is designed for mobile devices working under the control of Android operating system.
    Źródło:
    Archives of Transport System Telematics; 2018, 11, 1; 13-19
    1899-8208
    Pojawia się w:
    Archives of Transport System Telematics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Nanoscale Pattern Definition by Edge Oxidation of Silicon under the $Si_{3}N_{4}$ mask - PaDEOx
    Autorzy:
    Zaborowski, M.
    Grabiec, P.
    Dobrowolski, R.
    Panas, A.
    Skwara, K.
    Szmigiel, D.
    Wzorek, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/1807538.pdf
    Data publikacji:
    2009-12
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    68.65.-k
    74.78.-w
    81.16.Nd
    81.16.Rf
    81.65.Cf
    Opis:
    Well-controlled method of Si nanopattern definition - pattern definition by edge oxidation have been presented. The technique is suitable for fabrication of narrow paths of width ranged from several tens of nm to several μm by means of photolithography equipment working with μm-scale design rules. Process details influencing a shape of the Si pattern have been discussed. SEM examinations have been presented.
    Źródło:
    Acta Physica Polonica A; 2009, 116, S; S-139-S-141
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Fabrication and properties of the field emission array with self-alignment gate electrode
    Autorzy:
    Barth, W.
    Dębski, T.
    Rangelow, I.W.
    Grabiec, P.
    Studzińska, K.
    Zaborowski, M.
    Mitura, S.
    Biehl, S.
    Hudek, P.
    Kostic, I.
    Powiązania:
    https://bibliotekanauki.pl/articles/308414.pdf
    Data publikacji:
    2001
    Wydawca:
    Instytut Łączności - Państwowy Instytut Badawczy
    Tematy:
    field-emission array
    field emission display
    diamond-like-carbon layers emission
    silicon micromachining
    self-alignment technology
    Opis:
    A new method for the fabrication of field emission arrays (FEA) based on bulk/surface silicon micromachining and diamond-like-carbon (DLC) coating was developed. A matrix of self-aligned electron field emitters is formed in silicon by mean anisotropic etching in alkali solution of the front silicon film through micro holes opened in silicon oxide layer. The field emission of the fabricated emitter tips is enhanced by a diamond-like-carbon film formed by chemical vapor deposition on the microtips. Back side contacts are formed by metal patterning. Detailed Raman, Auger and TEM investigations of the deposited DLC films (nanocrystalline diamond smaller than 10 nm) will be presented. In this paper we discuss the problems related to the development of field emission arrays technology. We also demonstrate examples of devices fabricated according to those technologies.
    Źródło:
    Journal of Telecommunications and Information Technology; 2001, 1; 49-52
    1509-4553
    1899-8852
    Pojawia się w:
    Journal of Telecommunications and Information Technology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-7 z 7

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