In order to get the 3-D fine velocity structure in the Capital-circle area of China, 6 explosions, ranging from 1800 to 2500 kg, were conducted and recorded by an array of 240 seismographs. A reflection/refraction su...In order to get the 3-D fine velocity structure in the Capital-circle area of China, 6 explosions, ranging from 1800 to 2500 kg, were conducted and recorded by an array of 240 seismographs. A reflection/refraction survey was carried out along the profile extending from Anxin county, Hebei Province northeastward to Yanshan Mountains, crossing the Zhangjiakou-Bohai tectonic zone. The 2-D velocity structure of P wave was imaging along the profile. The results show that abnormality exists in the deep structure of the Zhangjiakou-Bohai tectonic zone: The base- ment is significantly depressed, the interfaces and Moho are uplifted, and a strong velocity gradient layer is existed above the Moho that may be dislocated by deep fault. The crust of Huabei basin is thin and low velocity body ex- ists in the crust. The Yanshan Mountains′ crust is thick, the layers in the crust are quite clear and the velocity in the layer is homogeneous. Huabei basin differs from Yanshan Mountains in structure.展开更多
目的:探讨脑电地形图在脑瘤疗效判断上的应用价值。方法:通过对30例脑瘤治疗 前后脑电地形图改变进行对比研究。结果:脑电地形图在治疗前后有明显改变。结论:脑电地形图 可以作为脑瘤疗效评价的一个有价值的指标。<正>Objectif: D...目的:探讨脑电地形图在脑瘤疗效判断上的应用价值。方法:通过对30例脑瘤治疗 前后脑电地形图改变进行对比研究。结果:脑电地形图在治疗前后有明显改变。结论:脑电地形图 可以作为脑瘤疗效评价的一个有价值的指标。<正>Objectif: De explorer valeure appliq6e de encephale adas dan evaluation de effet cur atif de tumeur cerebral. Methode: Etude comparative de encephale adas de 30 malades avec tumeur cerebral avant et apr6s traitement est realise. Resultat: Encephale adas est change manifestement avant et apres traitement. Conclusion: Encephale adas est un index valable de jugement de effet curatif dans tumeur cerebral.展开更多
基金Preliminary study of State Key Basic Research Project (2001CCA02100) and National Natural Science Foundation of China (40234038).
文摘In order to get the 3-D fine velocity structure in the Capital-circle area of China, 6 explosions, ranging from 1800 to 2500 kg, were conducted and recorded by an array of 240 seismographs. A reflection/refraction survey was carried out along the profile extending from Anxin county, Hebei Province northeastward to Yanshan Mountains, crossing the Zhangjiakou-Bohai tectonic zone. The 2-D velocity structure of P wave was imaging along the profile. The results show that abnormality exists in the deep structure of the Zhangjiakou-Bohai tectonic zone: The base- ment is significantly depressed, the interfaces and Moho are uplifted, and a strong velocity gradient layer is existed above the Moho that may be dislocated by deep fault. The crust of Huabei basin is thin and low velocity body ex- ists in the crust. The Yanshan Mountains′ crust is thick, the layers in the crust are quite clear and the velocity in the layer is homogeneous. Huabei basin differs from Yanshan Mountains in structure.
文摘目的:探讨脑电地形图在脑瘤疗效判断上的应用价值。方法:通过对30例脑瘤治疗 前后脑电地形图改变进行对比研究。结果:脑电地形图在治疗前后有明显改变。结论:脑电地形图 可以作为脑瘤疗效评价的一个有价值的指标。<正>Objectif: De explorer valeure appliq6e de encephale adas dan evaluation de effet cur atif de tumeur cerebral. Methode: Etude comparative de encephale adas de 30 malades avec tumeur cerebral avant et apr6s traitement est realise. Resultat: Encephale adas est change manifestement avant et apres traitement. Conclusion: Encephale adas est un index valable de jugement de effet curatif dans tumeur cerebral.
