Results 71 to 80 of about 9,037 (116)

[Effectiveness of staged therapy using external fixation frame for infectious nonunion near knee joint]. [PDF]

open access: yesZhongguo Xiu Fu Chong Jian Wai Ke Za Zhi
Wang Z   +7 more
europepmc   +1 more source

基于遥感生态指数改进模型的沱江流域生态环境质量时空变化及驱动力研究

open access: yesShuitu Baochi Xuebao
[目的] 沱江流域面临严重的水土流失、水环境污染和土壤侵蚀等生态环境问题,开展流域生态环境质量评价对推动长江上游生态环境保护和流域社会经济高质量可持续发展具有重要意义。[方法] 基于谷歌地球引擎平台,选取2000—2020年的Landsat遥感影像,以绿度、湿度、热度、干度、生物丰度指数构建生态环境质量评价模型,采用变异系数、一元线性回归和空间自相关分析方法对流域内生态环境质量的时空演变格局进行分析,并运用最优参数地理探测器模型(optimal parameter geographic detector
赵晓燕   +5 more
doaj  

特高压GIS用磁环型阻尼母线VFTO抑制性能试验研究

open access: yesGaoya dianqi
GIS中的隔离开关在操作过程中由于断口重复击穿会产生特快速瞬态过电压(very fast transient overvoltage,VFTO)。VFTO幅值高、波前陡,严重威胁电气一次绝缘,并会产生电磁干扰问题。目前,实际工程中除采用带投切电阻的隔离开关抑制VFTO外,还可以采用磁环型阻尼母线对VFTO进行抑制。为了保证GIS的可靠性,磁环型阻尼母线抑制性能的优劣至关重要。为此,亟需研究提出一种在试验室进行磁环抑制效果的评定方法。文中针对磁环型阻尼母线的抑制性能,设计了专门的抑制性能试验回路 ...
杨喜龙   +6 more
doaj  

[Diffusion cycle-consistent generative adversarial networks for pelvic active bone marrow segmentation]. [PDF]

open access: yesNan Fang Yi Ke Da Xue Xue Bao
Zhuo L   +5 more
europepmc   +1 more source

[Application and challenges of tissue engineered scaffolds in treatment of long-segment laryngotracheal stenosis]. [PDF]

open access: yesZhongguo Xiu Fu Chong Jian Wai Ke Za Zhi
Yu Q   +7 more
europepmc   +1 more source

[Rehabilitation guidelines and specifications for traumatic spinal cord injury (2025 edition)]. [PDF]

open access: yesZhongguo Xiu Fu Chong Jian Wai Ke Za Zhi
Professional Committee Of Spine And Spinal Cord Injury Rehabilitation China Association Of Rehabilitation Of Disabled Persons   +3 more
europepmc   +1 more source

Home - About - Disclaimer - Privacy