منابع مشابه
spatial- temporal behavior of siberian high at 1000 h.pa level
in this research, temporal and spatial behavior of siberian high (sh) was studied at the level of 1000 h.pa. this study has been done using daily data of geo potential height at 12 gmt in ncep/ncar database with spatial resolution of 2.5ã2.5 degree in a 55 years period including 20089 days from january, 1st, 1951(dey, 11th, 1329) to december, 31st,2005(dey, 10th,1384). at first, the mean geo p...
متن کاملTemperature Measurements in Flames at 1000 Hz Using Femtosecond Coherent Anti-Stokes Raman Spectroscopy
[Abstract] Single-laser-shot temperature measurements at a data rate of 1 kHz are demonstrated using femtosecond coherent anti-Stokes Raman scattering (CARS) spectroscopy. The excitation of gas-phase Raman lines with spectral widths of 3 GHz by pump and Stokes beams with spectral widths of 3000 GHz is very efficient provided that the pump and Stokes beams are Fouriertransform-limited. The singl...
متن کاملHigh-frequency (1000 Hz) tympanometry in normal neonates.
The characteristics of high frequency (1000 Hz) acoustic admittance results obtained from normal neonates were described in this study. Participants were 170 healthy neonates (96 boys and 74 girls) aged between 1 and 6 days (mean = 3.26 days, SD = 0.92). Transient evoked otoacoustic emissions (TEOAEs), and 226 Hz and 1000 Hz probe tone tympanograms were obtained from the participants using a Ma...
متن کاملFrequency discrimination at 1200 Hz in the presence of high-frequency masking noise.
To evaluate the possible contribution of high-frequency hearing to frequency discrimination at lower frequencies, pure-tone frequency discrimination tasks at 1200 Hz, with and without high-frequency masking noise, were performed by two highly practiced normal-hearing listeners. Signal levels ranged from 10 to 80 dB SPL. Spectra of the three high-frequency masking noises ranged from 1.8 to 2.1 k...
متن کاملTemporal integration of the contralateral acoustic reflex threshold for a 1000 hz tonal activator and its age-related changes.
BACKGROUND Previous research has noted an age effect on the temporal integration of the acoustic reflex for a noise activator. PURPOSE To determine whether the age effect earlier noted for a noise activator will be noted for a tonal activator. RESEARCH DESIGN Comparison of ARTs of younger and older groups at activating stimulus durations of 12, 25, 50, 100, 200, 300, 500, and 1000 msec. S...
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ژورنال
عنوان ژورنال: The Journal of the Acoustical Society of America
سال: 1967
ISSN: 0001-4966
DOI: 10.1121/1.2143730