A brief study on the mixture rules of the acoustic non-linearity parameter B/A in binary biological mixtures.
Using the improved thermodynamic method, the acoustic non-linearity parameter B/A of binary biological mixtures--such as pig blood, sheep blood and bovine blood--is measured in order to test the mixture rules proposed by Apfel and Sehgal. The results show that the B/A values of the above-mentioned blood decrease with an increasing volume fraction of water. The B/A value varies linearly with the volume fraction of protein. It is also shown that, treated as a binary mixture, the blood obeys the trend that the B/A value varies with the volume of water. This is in agreement with the rules proposed by Apfel and Sehgal. However, the measured B/A value is not exactly equal to that of the mixture rules.
Yanwu
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D
Applied Acoustics Institute, Shaanxi Teachers University, Xian, People's Republic of China.
Feng
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M
Jie
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T
D000162:Acoustics; D000818:Animals; D001769:Blood / Q000000981:diagnostic imaging*; D002417:Cattle; D008433:Mathematics; D012756:Sheep; D013552:Swine; D013816:Thermodynamics; D014463:Ultrasonography