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Wyszukujesz frazę "Ozimek" wg kryterium: Wszystkie pola


Wyświetlanie 1-4 z 4
Tytuł:
Speech Intelligibility Measurements in Tinnitus Patients with and without Hearing Loss
Autorzy:
Wicher, A.
Ozimek, E.
Szymiec, E.
Powiązania:
https://bibliotekanauki.pl/articles/1537578.pdf
Data publikacji:
2010-07
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
43.71.-k
43.71.Gv
43.71.Ky
Opis:
The aim of the study was to determine the effect of hearing loss on speech intelligibility in tinnitus patients. Two new Polish tests for speech intelligibility measurements (the Polish Sentence Test-PST and the Polish Digit Triplet Test-PDTT) were used in the investigation. Tinnitus patients (56 persons) with bilateral sensorineural hearing loss and 28 tinnitus patients with normal hearing thresholds participated in the study. For tinnitus patients with hearing loss, two slopes of the audiograms for higher frequencies were chosen. The speech reception threshold (SRT) for sentence test $(SRT_{S})$ and for triplet test $(SRT_{T})$ were determined. Results showed that for tinnitus patients (without hearing loss), the mean $SRT_{S}$ = - 4.2 dB and was higher by -1.9 dB than that for normal hearing subjects (control group). For the triplet test, the mean $SRT_{T}$ = - 8.1, and was by -1.3 dB higher than $SRT_{T}$ for the control group. This meant that the PST reflected a greater tinnitus influence on the speech intelligibility than the PDTT. The mean $SRT_{S}$ values for tinnitus patients with sloping audiogram up to 15 dB/oct were within the range from -3.2 to -0.7 dB, while for the larger slopes the mean $SRT_{S}$ values changed from -2.2 dB to 0.48 dB.
Źródło:
Acta Physica Polonica A; 2010, 118, 1; 179-182
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Nanoscopic Investigation of Magnetic Thin Films by Means of Magnetic Force Microscopy Technique
Autorzy:
Sikora, A.
Ozimek, M.
Wilczyński, W.
Powiązania:
https://bibliotekanauki.pl/articles/1398987.pdf
Data publikacji:
2016-06
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
81.15.Cd
68.37.Rt
75.70.Kw
Opis:
In the article the results of the research aimed at the recognition of the correlation between the Ni-Fe film thickness and its magnetic domain structures are described. Magnetic thin films were prepared by pulse magnetron sputtering. Obtained thin film thicknesses were in the range of 47.6-326.0 nm. Magnetic domain structures were imaged using magnetic force microscopy. In order to obtain quantitative description of magnetic domains images, the algorithms designed for topography parameters determination were applied, enabling the comparison of specific factors related to the magnetic properties of the samples. Utilized approach provided the analysis of the impact of sputtering parameters on the morphological and magnetic properties of obtained films.
Źródło:
Acta Physica Polonica A; 2016, 129, 6; 1226-1229
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Ultra-Narrow Laser for Optical Frequency Reference
Autorzy:
Lisak, D.
Cygan, A.
Bielska, K.
Piwiński, M.
Ozimek, F.
Ido, T.
Trawiński, R.
Ciuryło, R.
Powiązania:
https://bibliotekanauki.pl/articles/1489836.pdf
Data publikacji:
2012-03
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
42.60.By
42.62.Eh
Opis:
We present ultra-narrow line width, tunable diode laser system which will be used as a local oscillator in an optical atomic clock and for precision spectroscopy of Sr near 689 nm. Design of the high finesse optical cavity used as short-term frequency reference is optimized with respect to insensitivity to vibrations. We achieved laser line width of about 8 Hz, measured by comparison of two identical systems. The relative phase lock of two lasers is better than 150 mHz. Laser tunability and usefulness for precison spectroscopy were demonstrated through line shape measurement of a 20 kHz wide resonance of the optical cavity.
Źródło:
Acta Physica Polonica A; 2012, 121, 3; 614-621
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Optical Properties of TiO₂ Nanopowder Doped by Silver (Copper) during Synthesis or PVD Method
Autorzy:
Ozimek, M.
Palewicz, M.
Hreniak, A.
Powiązania:
https://bibliotekanauki.pl/articles/1398976.pdf
Data publikacji:
2016-06
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
81.07.Wx
78.67.Bf
81.20.Fw
81.15.Cd
Opis:
Titanium dioxide doped nanopowders were prepared in two ways: (i) by applying a sol-gel method and (ii) by applying the sol-gel synthesis as the first step for pure TiO₂ preparation, and next, doped by using magnetron sputtering technique, that is one of a physical vapour deposition method. Silver and copper (Ag, Cu) metals were used as the dopants. Prepared samples were investigated by scanning electron microscope, X-ray diffraction and UV-Vis spectroscopy. The effect of the dopants' nature and the applied doping method were studied. The results showed that each prepared particles are nanocrystalline materials with particles diameter range from 80 nm to 500 nm (depending on the doping method). From optical experiments, it was possible to observe changes in absorbance spectra, which are probably related to interfacial charge transfer and the localized surface plasmon resonance phenomenon.
Źródło:
Acta Physica Polonica A; 2016, 129, 6; 1214-1219
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-4 z 4

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