Results 41 to 50 of about 134 (93)

等离子体流动控制技术原理及典型应用

Gaoya dianqi, 2017
等离子体流动控制激励器由于其具有响应时间短、激励频带宽、器件小、能耗低的技术优势,是流动控制领域最活跃的控制方式之一。等离子体激励器在飞行器的增升减阻、性能增强、力矩控制等方面具有重要的应用前景。文中通过实验和数值模拟方法研究了介质阻挡放电等离子体激励器（DBD）和等离子体合成射流激励器（PSJ）的基本气动特性。AC-DBD激励器主要产生射流扰动,NS-DBD等离子体激励器产生的扰动包括压力波、射流和旋涡结构,PSJ激励器能形成压力波和速度更高的射流扰动。采用AC-DBD激励器可以在低速流动下 ...
史志伟, 杜海, 李铮, 陆纪椿, 蒋旋   +4 more
doaj  

一种深度过流保护的新型Rogowski线圈研制

Gaoya dianqi, 2017
气体放电包含大量ns级上升沿m A级幅值的预放电电流,预放电完成后间隙击穿电流高达上kA。为了能安全、准确测量预放电电流,需研制一种新型Rogowski线圈。文中采用在自积分Rogowski线圈出口电阻两端并联贴片瞬态电压抑制二极管（transient voltage suppressor,TVS）的方案,研制了一种带深度过电流保护功能的新型Rogowski线圈。通过大量实验,对自积分电阻和过压保护器参数进行了优化选择,结果表明:满足电流测量灵敏度时,减小积分电阻值以拓宽线圈频带,电阻最优值为1050Ω;
张璐, 孙蕾, 刘石, 邓俊
doaj  

[Construction of the burn rehabilitation system]. [PDF]

Zhonghua Shao Shang Yu Chuang Mian Xiu Fu Za Zhi, 2023
Yu JA, Zhang XH.
europepmc   +1 more source

[Application of indocyanine green angiography in repair of facial soft tissue defect using superficial temporal artery based forehead flap]. [PDF]

Zhongguo Xiu Fu Chong Jian Wai Ke Za Zhi, 2023
Zhou M, Liu Y, Ran X, Zhu S, Li S, Chen Z, Han T, Jin S, Wang M, Zang M.   +9 more
europepmc   +1 more source

[Summary of the best evidence on exercise for the prevention and treatment of diabetic foot]. [PDF]

Zhonghua Shao Shang Yu Chuang Mian Xiu Fu Za Zhi, 2023
Guo QJ, Gu Y, Ouyang J, Yu LL, Zhang YZ, Rao JQ, Luo SS, Xu WY.   +7 more
europepmc   +1 more source

[Clinical efficacy of omalizumab for treatment of moderate or severe allergic asthma in children with serum immunoglobulin E levels >1 500 IU/mL: a prospective study]. [PDF]

Zhongguo Dang Dai Er Ke Za Zhi, 2023
Luo MX, Hua S, Wei W.
europepmc   +1 more source

[Analysis of related factors for postoperative recurrence of antrochoanal polyps in children]. [PDF]

Lin Chuang Er Bi Yan Hou Tou Jing Wai Ke Za Zhi, 2023
Chen Y, Gao Y, Ma J, Wang M, Li G, Li Z, Zhang T.   +6 more
europepmc   +1 more source

[A wearable six-minute walk-based system to predict postoperative pulmonary complications after cardiac valve surgery: an exploratory study]. [PDF]

Sheng Wu Yi Xue Gong Cheng Xue Za Zhi, 2023
Wang Y, Wang J, Zhang J, Luo Z, Guo Y, Zhang Z, Yu P.   +6 more
europepmc   +1 more source

Clinical characteristics of 32 cases of diffuse panbronchiolitis. [PDF]

Zhong Nan Da Xue Xue Bao Yi Xue Ban, 2023
Zhang L, Ou Y, Hu H, Shen C, Cao Y, Chen Z, Ouyang R.   +6 more
europepmc   +1 more source

[Characteristics of the subtype of vestibular migraine with ear fullness: association with early onset age and low-frequency hearing loss]. [PDF]

Lin Chuang Er Bi Yan Hou Tou Jing Wai Ke Za Zhi
Jiang L, Yu S, Lei Y, Zong X, Zhong S, Zuo W.   +5 more
europepmc   +1 more source