Results 71 to 80 of about 6,518 (116)

[Report of 24 cases of primary ciliary dyskinesia in children]. [PDF]

open access: yesZhongguo Dang Dai Er Ke Za Zhi
Feng XQ, Zhong LL, Peng L, Xu L, Zhou P.
europepmc   +1 more source

[Survey on sleep status and OSA-18 questionnaire among preschool children in Zhongshan City]. [PDF]

open access: yesLin Chuang Er Bi Yan Hou Tou Jing Wai Ke Za Zhi
Xu C, Fu M, Pan Z, Luo J.
europepmc   +1 more source

基于虚拟功率差异性的柔直电网故障保护方案

open access: yesGaoya dianqi
柔性直流电网故障特征复杂,快速可靠识别直流线路故障具有挑战性,为此,文中提出一种基于虚拟功率的柔性直流电网故障保护方案。首先,分析了直流线路在不同故障下线路上限流电抗器虚拟功率变化规律;其次,针对不同故障下限流电抗器虚拟功率的差异性,通过计算限流电抗器虚拟功率变化率识别区内、外故障,并计算正、负极限流电抗器功率积分的比值确定故障极。最后,实验结果表明,所提出的保护方案能准确区分区内、外故障以及故障极,对通信要求低且无需复杂的数据处理,在不同工况下均能够可靠工作,满足柔性直流电网对保护的要求。
李玉东   +4 more
doaj  

[Guangdong consensus on integrated Chinese and Western medicine management of prolonged disorders of consciousness]. [PDF]

open access: yesNan Fang Yi Ke Da Xue Xue Bao
Neurocritical Care Committee of Guangdong Provincial Association of Chinese Medicine.
europepmc   +1 more source

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