Results 121 to 130 of about 8,258 (170)

Distribution of bacteria infected by metagenomic sequencing technology in maxillofacial space. [PDF]

Hua Xi Kou Qiang Yi Xue Za Zhi, 2021
Chen YH, Zheng HY, Li ZX, Wu YC, Niu ZX, Peng YH, Zhao JF, Sun Q.   +7 more
europepmc   +1 more source

变压器中性点并联保护间隙距离确定方法研究

Dianci bileiqi, 2017
变压器中性点常采用避雷器与放电间隙相并联方式来保护中性点绝缘,但由于间隙放电的分散性,使得其配合困难从而常导致间隙误放电和拒放电。为了防止误放电和拒放电,准确地确定间隙的距离是绝缘配合的关键,最好的方法是绘制伏秒特性曲线,但此曲线绘制工作量过于繁杂。因此,提出运用正态概率分布,对雷电冲击放电和工频放电数据进行分析,选取间隙距离的方法,减小了间隙误放电和拒放电的概率,提高变压器中性点绝缘保护能力和供电可靠性。并应用该方法对金属氧化物避雷器并联保护间隙装置进行放电试验对比,试验证明了该方法是准确、有效的。
戴何笠, 刘能, 王旭, 杨鑫, 曾玲丽   +4 more
doaj  

[Castleman disease in the parapharyngeal space: a case report]. [PDF]

Lin Chuang Er Bi Yan Hou Tou Jing Wai Ke Za Zhi
Guo K, Wei D, Lei D.
europepmc   +1 more source

[Effectiveness of posterior single-level osteotomy with 360° release and correction in treatment of osteoporotic vertebral compression fractures with moderate to severe kyphosis]. [PDF]

Zhongguo Xiu Fu Chong Jian Wai Ke Za Zhi
Qing P, Xu H, Hu Y, Xie B, Wang T, Zhang L.   +5 more
europepmc   +1 more source

[Three-dimensional finite element analysis of digital wire loop space maintainers for missing deciduous teeth]. [PDF]

Beijing Da Xue Xue Bao Yi Xue Ban
Ma L, Teng Y, Wang Y, Zhao Y, Zhang X, Qin Q, Yin D.   +6 more
europepmc   +1 more source

[Imaging of the parapharyngeal space tumors and selection of the treatment]. [PDF]

Lin Chuang Er Bi Yan Hou Tou Jing Wai Ke Za Zhi, 2020
Hou J, Wang L, Zeng Q, Wang X, Wang Z, Hu G.   +5 more
europepmc   +1 more source

Guided bone regeneration-assisted orthodontic treatment for closing the space of missing central incisors. [PDF]

Hua Xi Kou Qiang Yi Xue Za Zhi, 2021
Chen LY, Huang M, Wu JQ, Luo J.
europepmc   +1 more source

[Clinical research of tumor resection in the anterior space of the styloid process via transoral endoscopic parapterygomandibular ligament internal approach]. [PDF]

Lin Chuang Er Bi Yan Hou Tou Jing Wai Ke Za Zhi
DU Y, Li L, Chen X.
europepmc   +1 more source

[Retrospective analysis of primary parapharyngeal space tumors]. [PDF]

Lin Chuang Er Bi Yan Hou Tou Jing Wai Ke Za Zhi, 2020
Zhao J, Wen Y, Zong L, Chen L, Liu M, Huang D, Wang J, Wu W, Lv P, Feng B.   +9 more
europepmc   +1 more source

[Dynamic distribution and clearance of ^99mTc-DTPA in brain extracellular space]. [PDF]

Beijing Da Xue Xue Bao Yi Xue Ban
Zou J, Gao T, Wang Y, Ren M, Liu D, Long R, Cheng Y, Liu M, Xu Z, Xie Z, Lv P, Yuan L, Han H.   +12 more
europepmc   +1 more source