نتایج جستجو برای: microwave acoustics
تعداد نتایج: 60559 فیلتر نتایج به سال:
Background: Microwave Thermotherapy has been gradually used in radiotherapy and it is reported that microwave radiation increases bone demineralization rate independently of temperature. Furthermore, it becomes more and more widespread that the damage caused by the synergistic effect of microwave radiation and hypergravity. The experiment was designed to investigate the effect of microwa...
This ultrasound and acoustics study of American English /r/ and /s/ investigates whether variability in production is related to individual differences in vocal tract morphology, namely the shape of the palate.1 There was reduced articulatory variability for flatter palates for both /r/ and /s/. There was a relationship between acoustics and palate shape for /s/ only, where flatter palates had ...
Underwater acoustic tank evaluation of acoustic properties of samples using spectrally dense signals
This papa deals with exploring the availability and reliability of subtraction techniques, based on spectrally dense signals such as Maximan Length Sequences, in evaluating the echo reduction losses of samples of interest in undawater acoustics. These techniques, first employed in air acoustics, were adapted to the undawater environment. Experimental results how how a measurement can be accompl...
This information note examines the revision to the ETSU-R-97 method of deriving noise conditions for wind farm planning permissions from background noise measurements, as proposed in an article in the Acoustics Bulletin of the Institute of Acoustics (IoA). 1 We have used actual wind speed data to model the impact of the revision on noise conditions and likelihood of noise complaints from neighb...
Coupled finite-infinite element computations are very efficient for modeling large scale acoustics problems. Parallel algorithms, like sub-structuring and domain decomposition methods, have shown to be very efficient for solving huge linear systems arising from acoustics. In this paper, a coupled finite-infinite element method is described, formulated and analyzed for parallel computations purp...
An integral equation generalizing a variety of known geometrical room acoustics modeling algorithms is presented. The formulation of the room acoustic rendering equation is adopted from computer graphics. Based on the room acoustic rendering equation, an acoustic radiance transfer method, which can handle both diffuse and nondiffuse reflections, is derived. In a case study, the method is used t...
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