Results 251 to 260 of about 104,092 (306)

Acoustic Model Reduction for the Design of Acoustic Treatments

SAE Technical Paper Series, 2021
<div class="section abstract"><div class="htmlview paragraph">Due to constant evolution in both noise regulations and noise comfort standards, noise reduction inside the vehicle remains one of the main issues faced today by the automotive industry.
Athanasios Poulos, Jonathan Jacqmot, Romain Baudson, Kambiz Kayvantash, Sandrine Le Corre   +4 more
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Acoustical Materials and Acoustical Treatments for Aircraft

The Journal of the Acoustical Society of America, 1947
Soundproofing treatments for aircraft must be designed to provide high degrees of both attenuation of sound transmitted through the fuselage and absorption of sound within the cabin. At low frequencies, treatments of weights which are practical for aircraft provide little or no attenuation of transmitted sound, hence the sound absorption at low ...
R. H. Nichols, H. P. Sleeper, R. L. Wallace, H. L. Ericson   +3 more
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Conservative Treatment of Patients with Acoustic Tumors

Neurosurgery, 1991
Abstract Seventy of 178 patients with acoustic tumors initially were treated conservatively and have been followed up for an average of 26 ± 2 months. The tumor size was determined by the mean maximum anteroposterior and mediolateral diameters, using computed tomographic or magnetic resonance imaging scans obtained sequentially ...
Bederson JB, von Ammon K, Wichmann WW, Yasargil MG   +3 more
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Acoustic duct with asymmetric acoustical treatment

The Journal of the Acoustical Society of America, 1982
Asymmetric or peripherally discontinuous acoustic linings for absorbing sound radiating within acoustic ducts, when properly located in the peripheral or circumferential direction, alter the directivity of sound emitted from an end of the duct to provide preferential enhanced suppression in a predetermined general direction.
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Treatment of Acoustic Neuromas

New England Journal of Medicine, 1998
Acoustic neuromas (vestibular schwannomas) are benign tumors of the eighth cranial nerve. They are unilateral and typically become symptomatic after the age of 30 years.
Lawrence H. Pitts, Robert K. Jackler
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The Good and Bad of Acoustic Treatment

American Industrial Hygiene Association Journal, 1958
(1958). The Good and Bad of Acoustic Treatment. American Industrial Hygiene Association Journal: Vol. 19, No. 5, pp. 424-429.
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Is No Treatment Good Treatment in the Management of Acoustic Neuromas in the Elderly?

The Laryngoscope, 1986
Two hundred twenty‐eight patients with acoustic neuromas were seen between 1974 and 1985. Twenty‐eight received no surgical treatment. Five patients who had undergone previous partial excision were excluded. The mean age was 71 years. The mean expected survival was 14.3 years. The mean follow‐up interval was 51 months (range 12 to 120 months).
J M, Nedzelski, R J, Canter, E E, Kassel, D W, Rowed, C H, Tator   +4 more
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Stereotactic radiotherapy for the treatment of acoustic neuromas

Journal of Neurosurgery, 2004
Object. The authors sought to assess the safety and efficacy of stereotactic radiotherapy when using a linear accelerator equipped with a micromultileaf collimator for the treatment of patients with acoustic neuromas. Methods. Fifty patients harboring acoustic neuromas were treated with stereotactic radiotherapy between September 1997 and June 2003 ...
Michael T, Selch, Alessandro, Pedroso, Steve P, Lee, Timothy D, Solberg, Nzhde, Agazaryan, Cynthia, Cabatan-Awang, Antonio A F, DeSalles   +6 more
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Gamma Knife Treatment of Acoustic Neurinoma

Stereotactic and Functional Neurosurgery, 1998
The results of treatment of acoustic neurinomas using Gamma Knife radiosurgery (GKR) during a 6-year period in our center were reviewed. Since May 7, 1990, we treated 88 cases of acoustic neurinoma with GKR. During a 52-month mean follow-up period, MRI was obtained in 63 patients. Reduction in tumor size occurred in 34 (54%) cases, and another 27 (42.8%
Y, Kwon, J H, Kim, D J, Lee, C J, Kim, J K, Lee, B D, Kwun   +5 more
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Delayed diagnosis and treatment of acoustic neuroma

The Laryngoscope, 1989
AbstractThe records of 25 patients who underwent excision of acoustic neuroma between 1980 and 1987 were reviewed. All patients originated from southern New England. Facial nerve function was preserved in 92% of all patients, and 42% of patients with tumors less than 2.0 cm retained residual hearing postoperatively.
D N, Traquina, I, Guttenberg, C T, Sasaki   +2 more
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