Results 121 to 130 of about 109,400 (169)

[Intravenous dexamethasone enhances efficacy of brachial plexus block <i>via</i> the costoclavicular space: a randomized, double-blind, single-center trial]. [PDF]

Nan Fang Yi Ke Da Xue Xue Bao
Wang S, Wu M, Sun N, Lin C, Chen Y, Zhang C, Deng F, Ma X, Fang H.   +8 more
europepmc   +1 more source

裂隙岩体稳定/非稳定渗流数值模拟

, 2009
发展裂隙岩体稳定/非稳定的渗流数值模型,一方面,依照裂隙面的密度、产状、位置、大小和开度的统计分布规律,使用蒙特卡罗模拟技术将完整岩石切割为三维不规则块体集合。根据相邻块体单元间产生的裂隙单元,构建三维裂隙网络系统,并附加各裂隙单元的水力特性;另一方面,对裂隙单元进行三角形单元的有限元网格划分,运用变分原理导出裂隙单元的渗流有限元求解方程。采用离散元方法中的动态松驰技术,在无须组装整体渗透矩阵的情况下求解裂隙网格各结点的水头值。最后 ...
李世海, 张丽, 刘晓宇
core  

[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

[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

[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

[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

[Research progress in the anatomy and surgical approach of the parapharyngeal space]. [PDF]

Lin Chuang Er Bi Yan Hou Tou Jing Wai Ke Za Zhi
Xue K, Wang L, Zheng S, Zhang H, Liu Q, Gu Y, Li W, Song X, Sun X, Yu H.   +9 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

Measurement algorithm for gap and flush of body-in-white based on structured light vision

, 2017
针对白车身表面覆盖件间隙面差人工测量精度差、效率低等问题,提出了利用结构光视觉测量方法代替人工测量。在间隙特征点识别中,计算光纹中心线上各点的绝对差分值,搜索差分极值点并将该极值点作为特征点;在面差特征点识别中,采用基于离散曲线曲率极值点的特征点定位算法。实验结果表明:间隙面差测量方法测量精度较高 ...
许敏, 徐首帅, 马钺, 陈帅
core  

[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