Results 91 to 100 of about 483,582 (127)

[Accuracy of dynamic navigation-assisted trephine method for bone harvesting]. [PDF]

Beijing Da Xue Xue Bao Yi Xue Ban
Liu J, Zhu N, Chang Y, Gao X, Zhang Y.
europepmc   +1 more source

[An investigation study on the technology and training level of ski patrol]. [PDF]

Beijing Da Xue Xue Bao Yi Xue Ban
Bai P, Huai W, Yang Z, Zhou F, Guo X, Chen Z, Guan H, Bai J.   +7 more
europepmc   +1 more source

不同人工林在草原露天矿区排土场边坡的水土保持效益及其环境影响

Shuitu Baochi Xuebao, 2000
分析研究了３种不同人工灌木林地在草原露天矿区排土场边坡的水土保持效益和对周围环境的影响，结果表明：山杏和丁香两种人工林生长缓慢，很难在短时间形成郁闭灌丛，而沙棘可以迅速形成郁闭度很高的人工林，护坡和土壤培肥作用显著。露天矿区排土场的形成将会根本改变其周围地区的土壤环境和植被类型。如无有效措施，坡下汇水区土壤将发生盐碱化，植被向耐盐的水生和湿地植物群落演替 ...
doaj  

[Research progress in central aortic pressure estimation algorithms]. [PDF]

Sheng Wu Yi Xue Gong Cheng Xue Za Zhi
Du S, Zhou S, Wang G, Zhu H, Xu L.
europepmc   +1 more source

砒砂岩泻溜侵蚀的坡向分异及其与气象因素的响应

Shuitu Baochi Xuebao
[目的] 泻溜作为砒砂岩区典型的重力侵蚀方式,已成为沟道内重要的粗砂物质来源,严重威胁流域生态安全,明确该地区侵蚀机理对黄河流域生态保护和高质量发展战略具有重要意义。[方法] 以内蒙古砒砂岩沟坡系统为研究对象,基于野外定位监测,利用三维激光扫描技术,分析不同坡向下沟坡侵蚀界面微地形变化与侵蚀特征的时空变化规律及其与气象要素之间的响应关系。[结果] (1)砒砂岩沟坡存在明显的泻溜侵蚀现象,且坡向分异较为明显。其中,阴坡平均侵蚀面积占研究区总面积的43.11%,阳坡平均侵蚀面积占研究区总面积的45.48 ...
任亚楠, 李龙, 张尚轩, 张宇, 周星辰   +4 more
doaj  

[A CT-based study of sphenoid sinus pneumatization]. [PDF]

Lin Chuang Er Bi Yan Hou Tou Jing Wai Ke Za Zhi
Gao Q, Zhou L, Chen X, Zhang C, Zha D.
europepmc   +1 more source

[Novel framework based on multi-stage random sampling and differentiable rendering for automated three-dimensional orientation estimation of skull base foramina]. [PDF]

Sheng Wu Yi Xue Gong Cheng Xue Za Zhi
Li Y, Zhang H, Geng S, Tan D, Shi W, Miao Y, Jiang Z.   +6 more
europepmc   +1 more source

[Comparative study on accuracy of three imaging methods in diagnosis of subacromial impingement syndrome]. [PDF]

Zhongguo Xiu Fu Chong Jian Wai Ke Za Zhi
Zi L, Jin H, Zhu J, Zhang G, Tong Y, Chen S, Shao W, Tang X.   +7 more
europepmc   +1 more source

[Gait recognition based on feature-level fusion of motion posture and surface electromyography]. [PDF]

Sheng Wu Yi Xue Gong Cheng Xue Za Zhi
Ma C, Li M, Yao J.
europepmc   +1 more source

[Changes in knee kinematic parameters and plasma inflammatory factors at different stages after anterior cruciate ligament injury]. [PDF]

Zhongguo Xiu Fu Chong Jian Wai Ke Za Zhi
Wei X, Zhang Y, Xue S, Sun Y, Qi C, Fu H.   +5 more
europepmc   +1 more source