Results 121 to 130 of about 3,687 (153)

[Mechanisms of spinal microglia and astrocytes in exercise-induced analgesia]. [PDF]

open access: yesZhong Nan Da Xue Xue Bao Yi Xue Ban
Hu S, You H, Lei J.
europepmc   +1 more source

Beam Position Control System for Heavy-ion Cancer Therapy Equipment

open access: yes
近代物理所依托兰州重离子冷却储存环(HIRFL-CSR)开展重离子治癌研究。在重离子治癌过程中,需要对束流位置十分精确的控制。本文实现了精确控制重离子束对肿瘤实现三维适形扫描。 对肿瘤切片方向定位采用主动磁扫描方式,通过控制X、Y 扫描铁电源实现束流对肿瘤一层切片中各点的扫描,在治疗过程中需要实现位置变化与辐照剂量的联动。为满足束流位置切换时扫描铁电源的阶跃响应过程,采用了一种新的加速器电源控制方式,通过控制频率变化实现扫描铁电源阶跃响应过程。该方法具有精度高、参数少、响应速度快和实时性好的特点 ...
黄继江
core  

[How I treat vasovagal syncope in children]. [PDF]

open access: yesZhongguo Dang Dai Er Ke Za Zhi
Zou RM, Wang C.
europepmc   +1 more source

[Low-level laser therapy for the treatment of male infertility and erectile dysfunction]. [PDF]

open access: yesBeijing Da Xue Xue Bao Yi Xue Ban
Niu Y   +6 more
europepmc   +1 more source

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