Measurements of acoustic properties of aqueous dextran solutions in the VHF/UHF range
Measurements of acoustic properties of aqueous dextran solutions in the VHF/UHF range
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DOI：
10.1016/s0041-624x(00)00015-9
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发表时间：
2000-09-01
期刊：
影响因子：
4.2
通讯作者：
Dunn, F
中科院分区：
文献类型：
--
作者：
Akashi, N;Kushibiki, JI;Dunn, F
通过使用超声透射比较方法的生物超声光谱系统，在70-400 MHz的频率范围内表征葡聚糖水溶液的声学性质。报道了葡聚糖水溶液的衰减、速度、阻抗和密度，其中六种分子量在10，400 - 2，000，000 Da范围内，浓度在5- 20重量%范围内。所有四个参数都随着浓度的增加而增加。随着分子量的增加，衰减系数增加，速度降低。精确的频率和分子量依赖的解决方案的声学性能很容易确定的系统。(C)2000 Elsevier Science B. V.保留所有权利。
The acoustic properties of aqueous solutions of dextran are characterized in the frequency range of 70-400 MHz by the bio-ultrasonic spectroscopy system using an ultrasonic transmission comparison method. The attenuation, velocity, impedance, and density of aqueous dextran solutions, for six molecular weights in the range of 10,400-2,000,000 Da in the concentration range 5-20% by weight, are reported. All four parameters increase with increasing concentration. As the molecular weight increases, the attenuation coefficient increases and the velocity decreases. The precise frequency and molecular weight dependences of the acoustic properties of the solutions are readily determined by the system. (C) 2000 Elsevier Science B.V. All rights reserved.