低频脉冲强磁场发生仪及其生物学效应研究(英文)

Low frequency pulsed strong magnetic fields generator and its biological effects

强脉冲磁场发生仪采用先蓄能,后瞬间释放能量的工作方式,仪器分蓄能、能量转换、控制、显示和接口5个功能块。该发生仪可产生磁感应强度最大值为0.1～2.5T,周期从10-3～10s可调的脉冲磁场。该仪器已用于刺激人体运动神经,检测运动神经的传导速度;辐照小鼠,检测白细胞数的变化;辐照离体人血,检测血液流变特性的变化等生物效应研究,得到了一些有意义的结果。使用结果表明,该仪器操作方便、性能可靠,可长时间稳定运行。通过进一步开发,该仪器可在磁场生物效应的科学实验及其他领域中得到广泛应用。

Low frequency pulsed strong magnetic fields generator is worked by way of storing energy and then discharging energy instantaneously.It mainly consists of energy storage,transducer, controllable circuit,display and interface.It provides a pulsed magnetic field with the range of maximum intensity from 0.1-2.5 T and the adjustable time interval of pulse from 10-3-10 s.It has been used in study of biological effects,such as stimulating motor nerve center of human brain to measure the conduction speed of peripheral nerve,observing the change of number of leukocyte in mice exposed to the magnetic field and radiating a blood sample to study the changes of hemorrheologic characteristics,and some good results were obtained.The device is easy to operate and performs reliably.It can work stably for a long time.Through further experiments and improvement to the device,we think it will be widely used in the study of the biological effects of magnetic field and in other fields.