The viscosity and electrical resistivity changes of blood due to the flow are dependent on the orientation and deformation of red cells. From an electrical point of view, it can be assumed that blood is a suspension of small insulating particles (red cells) in conducting fluid (plasma) when the frequency of supplied voltage is lower than several hundreds kHz. When blood flows, red cells deform and orient in the flow direction. Therefore, flowing blood shows anisotropic resistivity. In the steady flow, blood resistivity longitudinal to flow decreases with the flow rate, and transverse one increase. Blood flow in living body is not steady but pulsatile. We measured both longitudinal and transverse resistivity change and viscosity change of sinusoidally flowing blood in a rectangular conduit.
The results are 1) during one period of flow the direction of longitudinal resistivity change is opposite to that of transverse one, and 2) minimum points of both longitudinal resistivity and viscosity changes during one period do not occur at the moment when flow is being zero but are delayed.
In case of amplitude of sinusoidal flow is small and oscillation frequency is high, the phase difference between the zero crossing period of flow and the priod of minimum change of resistivity, increases up to 90°. Viscosity of blood decreases with increase of amplitude of sinusoidal flow and increase of oscillation frequency

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A description of a magnetic microrheometer for the measurement of dynamic viscoelasticity of soft gel is given. The complex compliance of the thick white of the hen's egg for various storage time at 25°C was measured over the frequency range from 20 to 0.01 Hz.
Frequency-storage time superposition of the storage and loss compliance data could be achieved in the high frequency region when a shift factor was used on the vertical axis. With increasing the storage time, the loss tangent curve shift toward higher frequencies, the magnitude of the storage compliance increases, and the maximum in the loss compliance becomes broader in shape. The thick white samples exhibited a substantial secondary loss mechanism at very low frequencies. The low-frequency loss is evident in the newly laid egg, and its magnitude increases rapidly with increasing the storage time. The rate of this egg thinning depends on the temperature at which the egg is kept.
The magnitude of the loss tangent at a low frequency can be used as a measure of egg thinning. These results can be interpreted as indicating the variable structure of the thick white gel composing of ovomuchin during the storage.

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