In order to apply Vibro-acoustography for imaging of arteries, a theoretical model of vibro-acoustics of thick arterial vessels is presented. The arterial wall is modeled with the first order shear deformation theory. The fluids outside and inside the artery are modeled with acoustic wave theory. The coupled vibration of arterial tubes is analyzed with the wave propagation approach. The experim...

PURPOSE To establish the occurrence of dysphonic children and to relate data from auditory-perceptive, acoustic and vocal self-perception analyses of dysphonic and non-dysphonic children. METHODS Participants were 70 children, 37 female and 33 male, with ages ranging from 6 to 10 years. The sustained emission of the vowel /a/ was recorded, and children replied to the question "What do you thi...

nonlinear static procedure (nsp) is a common technique to predict seismic demands on various building structures by subjecting a monotonically increasing horizontal loading (pushover) to the structure. therefore, the pushover analysis is an important part of each nsp. accordingly, the current paper aims at investigating the efficiencyof various algorithms of lateral load patterns applied to the...

Refining vehicle NVH is a key aspect of the powertrain development process. Powertrain NVH refinement is impacted not only by overall sound levels, but also sound quality. Powertrain sound quality and therefore the level of NVH refinement can be adversely impacted by excessive impulsive noise. A process is outlined in this study to comprehend the occurrence of impulsive powertrain noise. Additi...

background: in the steel industry, coke-fueled furnaces are used for smelting iron ore to produce cast iron are considered as sources of annoying noise.this study aims to evaluate the noise pollution blast furnace and sound source characteristics in order to present noise control measures in the steel industry. methods: measurement of noise level and its frequency analysis was performed using s...

The diagnosis of many diseases often requires a histological analysis of tissues. Histology analysis compares the microscopic structure of a tissue specimen with an image database containing known physiological and pathological tissue structures. Three new microscopy technologies are developed to complement histology based on novel contrast mechanisms to better visualize and understand tissue s...

The paper addresses the active control of the sound transmission through a double panel partition. A literature survey indicates that active cavity control is much more efficient than active structural control. The vibro-acoustic behaviour of the double wall is analysed in light of this observation. This analysis shows that the sound transmission through the double panel is larger than that thr...