Yanwu D, Feng M, Jie T
Applied Acoustics Institute, Shaanxi Teachers University, Xian, People's Republic of China.
Ultrasonics. 1994 Nov;32(6):473-5. doi: 10.1016/0041-624x(94)90068-x.
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.
采用改进的热力学方法，对猪血液、羊血液和牛血液等二元生物混合物的声学非线性参数B/A进行测量，以检验Apfel和Sehgal提出的混合规则。结果表明，上述血液的B/A值随水的体积分数增加而降低。B/A值随蛋白质的体积分数呈线性变化。还表明，作为二元混合物处理时，血液遵循B/A值随水体积变化的趋势。这与Apfel和Sehgal提出的规则一致。然而，测量得到的B/A值并不完全等于混合规则计算的值。
