Results 101 to 110 of about 4,078 (147)

[Effectiveness comparison of transforaminal endoscopy and unilateral biportal endoscopy for far lateral lumbar disc herniation]. [PDF]

Zhongguo Xiu Fu Chong Jian Wai Ke Za Zhi
Zhang J, Feng B, Xu Z, Tian L, Dai G, Wang K, Hu P.   +6 more
europepmc   +1 more source

破碎岩土压缩试验中用的柔性边界加载实验机

, 2004
本实用新型涉及一种柔性边界加载实验机，包括：试验机框架、三个位于试验机框架外的加压装置和压力室缸体，还包括至少一个固定在上盖板的下表面处的超声波位移测量装置，侧面包裹有乳胶膜的试样位于压力室缸体内，其侧面与压力室缸体内壁之间形成一围压压力室，该围压压力室内充满液体或气体；所述轴压活塞环放置在试样上，其外径与压力室缸体的内径相等；所述轴压加载胶囊位于轴压活塞环与上盖板之间，所述的位于实验机框架的下盖板内的平衡压活塞环通过平衡压传力杆与轴压活塞环固定连接在一起，其下方还设置一平衡压加载胶囊 ...
李世海, 张均锋, 孟祥跃
core  

[Development of an OCTA-based risk prediction model for retinopathy in patients with obstructive sleep apnea and hypertension]. [PDF]

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

[Biomechanical study on the combined effects of femoral component rotational malalignment and osteoporosis in unicompartmental knee arthroplasty]. [PDF]

Sheng Wu Yi Xue Gong Cheng Xue Za Zhi
Zhou T, Liu P, Lu N, Sun Z, Tian J, Diao C.   +5 more
europepmc   +1 more source

[Experimental study of patient-specific three-dimensional-printed drill guide-assisted C ₂ pedicle screw placement in models derived from patients with basilar invagination]. [PDF]

Zhongguo Xiu Fu Chong Jian Wai Ke Za Zhi
Li J, Jiang W, Cheng J, Niu C, Si W, Niu G.   +5 more
europepmc   +1 more source

[Effect of composite graphene-protein hydrogels on neural regeneration after spinal cord injury in rats]. [PDF]

Zhongguo Xiu Fu Chong Jian Wai Ke Za Zhi
Zhang Z, Fan Z, Wang X, Zhu Z.
europepmc   +1 more source

[Study on electrospun film-covered tracheal stents with adaptive release of anti-inflammatory drugs driven by the piezoelectric effect]. [PDF]

Sheng Wu Yi Xue Gong Cheng Xue Za Zhi
Wang Z, Zhao F, Dai B, Wang F, Du T, Qiao A, Zhang Y.   +6 more
europepmc   +1 more source

基于机器学习的不锈钢管混凝土构件轴压承载力预测方法研究

收集了189个不锈钢管混凝土构件的轴压试验数据，建立了机器学习数据库，采用了6种机器学习模型（随机森林、决策树、支持向量机、多层感知器、极端梯度提升和自适应提升）分别对圆形和方形截面不锈钢混凝土构件进行轴压承载力预测研究，同时分析了不同参数对机器学习模型预测精度的影响。研究结果表明，上述6种机器学习预测模型中预测精度最优的是极端梯度提升模型，对于圆形和方形截面构件所有参数的预测，该模型的均方根误差分别为0.043 5和0.018 8，且该模型对于圆形和方形截面构件的预测值与试验值之比的变异系数分别为0 ...
陆国兵, 廖飞宇, 余琪瑶
core  

[Impact of lamina formation range on lumbar biomechanics in unilateral biportal endoscopic spine surgery: a finite element analysis for surgical optimization]. [PDF]

Zhongguo Xiu Fu Chong Jian Wai Ke Za Zhi
Ji S, Ma B, Zou Y, Zhang M, Ren M, Li H, Duan K, Xu C, Zhang C, Ye Y, Zhou P.   +10 more
europepmc   +1 more source

[A multicenter study on the classification and repair effects of stage 4 pressure injury in ischial tuberosity in elderly patients]. [PDF]

Zhonghua Shao Shang Yu Chuang Mian Xiu Fu Za Zhi
Chen LX, Zhang X, Zhao ZJ, Zhang XZ, Zhang BD, Lyu DL, Duan LS, Peng K, Xu DW, Wu DJ.   +9 more
europepmc   +1 more source