恒定磁场作用下血液表观粘度的改变

CHANGES OF APPARENT VISCOSITY OF WHOLE BLOOD CAUSED BY CONSTANT MAGNETIC FIELD

经０．７Ｔ恒定磁场作用，血液表观粘度明显降低，尤其是低切变率下的血液表观粘度及还原粘度与不经磁场的血样比较有显著差异（Ｐ＜０．００１）。分析认为，磁场作用下，一方面红细胞表面电荷受洛仑兹力作用，使聚集体解聚，另一方面红细胞电泳速度加快，表面电荷密度增大，使红细胞间相斥性增加，促使解聚，从而降低了全血粘度。

Experiments have been done on changes of apparent viscosity of the blood under the constant magnetic field (B= 0. 7T) with cone-plate viscosimeter. The experiments showed a remarkable de- crease of blood viscosity under the influence of the applied electromagnetic field, esp. the difference be -tween blood viscosity under low shear, reductive viscosity and the blood sample which did not undergo the applied magnetic field (p<0. 001). The results revealed that constant magnetic field has the func- tion of the red blood deaggregation. Under the influence of magnetic field ,the facial electric charge was affected by the Lorentz force, accelerating the deaggregation of the red blood cells and speeding up the process of cell electrophoresis. It means the acceleration will increase the facial charge density of the red blood cells ; raise the repulsive force among the red blood cells; quicken the process of deaggregation and reduce the viscosity of the whole blood. This is the theoretical foundation of magnetherapy and magnetic radiation protection.