Results 61 to 70 of about 3,958 (109)

[Comparison of effectiveness between endoscopic and microscopic anterior cervical discectomy and fusion]. [PDF]

open access: yesZhongguo Xiu Fu Chong Jian Wai Ke Za Zhi
Huang C   +9 more
europepmc   +1 more source

一种新型抗干扰高压隔离开关的设计

open access: yesGaoya dianqi
针对户外高压隔离开关常受到外界环境等外力的作用而造成合闸失败的问题,设计了一种新型抗干扰高压隔离开关。首先通过对传统的三柱水平旋转式高压隔离开关的结构组成和工作原理进行分析,得出了造成高压隔离开关合闸过程中导电杆提前翻转的原因。然后结合槽轮间隙机构和四连杆阻尼机构的运动特点,给出了抗干扰隔离开关的设计方案与三维几何模型的建立。最后通过数值仿真对四连杆阻尼机构中弹簧的安装位置进行了确定,并验证了设计目标要求。结果表明:该结构可以有效解决传统高压开关导电杆受外力的干扰,可为隔离开关结构的优化设计提供参考依据。
孙龙勇   +9 more
doaj  

[Aesthetic goals of hypospadias repair]. [PDF]

open access: yesZhongguo Xiu Fu Chong Jian Wai Ke Za Zhi
Tang Y.
europepmc   +1 more source

基于姿态角与速度曲线的高压隔离开关故障诊断

open access: yesGaoya dianqi
高压隔离开关作为电力系统重要的电气设备,其机械故障会对电网的安全运行造成不利影响。而对隔离开关智能化故障诊断的研究目前还处于初步阶段,为此以某公司GW5-35型隔离开关为实验样机,搭建了基于陀螺仪的姿态角测量系统,测量了正常状态、触头风沙沉积、行程开关限位螺栓松动、轴承座螺栓松动和极间连杆双头螺栓松动等5种状态的姿态角—时间曲线和速度—时间曲线。提出了将隔离开关合闸过程划分为3个阶段并提取14个特征的特征提取方法,对上述5种状态下隔离开关的典型工作过程和故障表现进行了详尽分析 ...
张晋波   +8 more
doaj  

[Clinical efficacy of multidisciplinary team collaboration in the treatment of deep sternal wound infection]. [PDF]

open access: yesZhonghua Shao Shang Yu Chuang Mian Xiu Fu Za Zhi
Tong L   +6 more
europepmc   +1 more source

[Spatial omics in pulmonary fibrosis: advancing mechanistic insights and therapeutic strategies]. [PDF]

open access: yesZhejiang Da Xue Xue Bao Yi Xue Ban
Peng Y, Xie Y, Yang F, Qiao X, Tian Y.
europepmc   +1 more source

[Predicting epileptic seizures based on a multi-convolution fusion network]. [PDF]

open access: yesSheng Wu Yi Xue Gong Cheng Xue Za Zhi
Shen X, Piao Y, Yang H, Zhao H.
europepmc   +1 more source

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