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International Journal of Fluid Mechanics Research

Erscheint 6 Ausgaben pro Jahr

ISSN Druckformat: 2152-5102

ISSN Online: 2152-5110

The Impact Factor measures the average number of citations received in a particular year by papers published in the journal during the two preceding years. 2017 Journal Citation Reports (Clarivate Analytics, 2018) IF: 1.1 To calculate the five year Impact Factor, citations are counted in 2017 to the previous five years and divided by the source items published in the previous five years. 2017 Journal Citation Reports (Clarivate Analytics, 2018) 5-Year IF: 1.3 The Eigenfactor score, developed by Jevin West and Carl Bergstrom at the University of Washington, is a rating of the total importance of a scientific journal. Journals are rated according to the number of incoming citations, with citations from highly ranked journals weighted to make a larger contribution to the eigenfactor than those from poorly ranked journals. Eigenfactor: 0.0002 The Journal Citation Indicator (JCI) is a single measurement of the field-normalized citation impact of journals in the Web of Science Core Collection across disciplines. The key words here are that the metric is normalized and cross-disciplinary. JCI: 0.33 SJR: 0.256 SNIP: 0.49 CiteScore™:: 2.4 H-Index: 23

Indexed in

Features of the "Tissue" Sound Propagation Channel in Human Thorax

Volumen 30, Ausgabe 2, 2003, 14 pages
DOI: 10.1615/InterJFluidMechRes.v30.i2.60
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ABSTRAKT

The acoustic propagation through biological tissues of a thorax with allowance for availability of its costal framework and the surface soft tissues is investigated. Estimations of the density, the sound speed and the attenuation coefficient in the lung parenchyma and the soft biotissues are obtained. Within the approach of linear acoustics the mathematical model is developed permitting to assess quantitatively a performance of the sound transmission from the lung to the surface of the human body. It is shown that at propagation of the sound in the considered system the piston mode dominates. It is shown that when the breath sounds propagate in the thorax, the effect of its costal grating is exhibited by the constant additional loss of the signal. It is shown that the low-frequency domains of the spectrum of normal respiratory sounds are formed by the sources disposed on whole volume of the lung. The high-frequency spectrum is formed predominantly by the sources disposed on the lung's peripherals.

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