نتایج جستجو برای: acoustic equipment
تعداد نتایج: 161708 فیلتر نتایج به سال:
Thermal Protection Technology for Acoustic–Magnetic Device in a Geothermal Water Anti-Scaling System
This article presents the results of design acoustic–magnetic device thermal protection technology based on simulation. The (AMD) was installed in heat supply system a greenhouse complex with geothermal source, developed and patented by authors this paper. Simulation performed to investigate possibility maintaining acoustic transmitter temperature its operating range. QuickField Student Edition...
Background and Objective: A practical method for noise control in environments with different noise sources is designing an acoustic cabin for the workers. In this regard, this study aimed to assess the efficiency of the acoustic cabin in a typical turbine unit of a thermal power plant to provide acoustic comfort. Materials and Methods: Measurement of the noise level and spectrum, as well as v...
results certain correlations were found between fundamental frequency in vowel and total vhi, physical, functional and emotional domains of vhi in group 1 (r = 0.636, 0.649, 0.613 and 0.592 respectively). there was good correlation between speaking fundamental frequency and total vhi and its subscales - except the physical subscale - were also correlated. in group 2, the correlations between ji...
In the present paper, the phonological feature geometry of the Persian phonemes is analyzed in the form of articulate-free and articulate-bound features based on the articulator model of the nonlinear phonology. Then, the reference phonetic pattern of each feature that consists of one or a set of acoustic correlates, characterized by the quantitative or qualitative values in its phonological re...
background: military personnel are usually exposed to high levels of impulse noise (in) which can lead to hearing loss. objectives: the purpose of this study was to assess the effects of relatively low level exposure of impulse noise (in) during shooting practice on hearing using pure tone audiometry (pta) and transiently evoked otoacoustic emission (teoae) in military personnel. materials and ...
Factors influencing booster seat use in a multiethnic community: lessons for program implementation.
Based on the local incidence and severity of motor vehicle occupant injuries, the authors' community and hospital injury prevention partnership identified child passenger safety for 4-to-8-year-old children as a priority. They designed a booster seat promotion campaign using an integrated social cognition model of health behavior. A series of focus groups were held with low-income African Ameri...
Production studies have shown that speakers of languages with larger phoneme inventories expand their acoustic space relative to languages with smaller inventories [Bradlow, A. (1995). A comparative acoustic study of English and Spanish vowels. Journal of the Acoustical Society of America, 97(3), 1916–1924; Jongman, A., Fourakis, M., & Sereno, J. (1989). The acoustic vowel space of Modern Greek...
BACKGROUND Bilateral arm training (BAT) and constraint-induced therapy (CIT) have shown beneficial effects in improving motor control and function of the upper extremities (UE) for patients with stroke. Thus far, no study has directly investigated the relative effects of BAT versus CIT on brain reorganization. This study compared the effects of BAT with distributed CIT (dCIT) on brain reorganiz...
Small ceramic figurines were common components of domestic artifact inventories at Aztec archaeological sites. These objects provide important evidence in the investigation of Aztec domestic ritual (Smith 2002). a realm poorly represented i n the abundant ethnohistoric documentation of Aztec religion. Although Aztec-style ceramic figurines are abundant both in museum collections and at archaeol...
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