Results 101 to 110 of about 497,198 (145)

[Research on electrooculography artifact removal from electroencephalography signals based on frequency slice wavelet transform]. [PDF]

Sheng Wu Yi Xue Gong Cheng Xue Za Zhi
Fu H, Zhao M, Wang L, Tang B, Xue C, Chen Y.   +5 more
europepmc   +1 more source

[Reliability-aware periodicity graph neural network for remote heart rate estimation]. [PDF]

Sheng Wu Yi Xue Gong Cheng Xue Za Zhi
Huang C, Wang Y.
europepmc   +1 more source

[Development and performance testing of a high-sensitivity pulsed flame photometric detector]. [PDF]

Se Pu
Chen JB, Cai HY, Deng ZH, Jin YJ, Sun JH.   +4 more
europepmc   +1 more source

不同喷压比下欠膨胀射流对特征频率激励的响应

, 2016
欠膨胀射流广泛应用在高超声速飞行器的燃料喷注、发动机尾喷管、姿态调整,以及局部热流控制等方面,其流动特性一直是国际上的研究热点。特别地,在以超燃冲压发动机为代表的高超声速飞行器燃烧室内,超声速空气来流的驻留时间较短,实现燃料和氧化剂的快速掺混是目前发动机设计中面临的关键技术挑战。相关研究表明,通过对射流施以一定频率的激励可以有效的促进混合。值得注意的是,射流来流总压和环境压力之间的比值(NPR)是影响欠膨胀射流流场发展的关键因素。在不同的喷压比下,射流的欠膨胀程度不同 ...
李晓鹏, 姚卫, 范学军
core  

[Effects of pulsed electromagnetic fields on high-glucose-induced inhibition of HUVEC proliferation and its underlying mechanisms]. [PDF]

Zhonghua Shao Shang Yu Chuang Mian Xiu Fu Za Zhi
Cao T, Ji P, Zhang Z, Xiao D, Zhao M, He WQ, Chen B, Tao K.   +7 more
europepmc   +1 more source

[Dual-stream temporal-frequency convolutional network with additive attention for auditory attention decoding]. [PDF]

Sheng Wu Yi Xue Gong Cheng Xue Za Zhi
Lin X, Zhang S, Huang S.
europepmc   +1 more source

典型喀斯特小流域不同降雨等级水化学最优采样频率初探

Shuitu Baochi Xuebao
[目的] 当前研究主要关注非喀斯特地区长时间尺度频率研究,对喀斯特不同降雨等级下的水化学采样频率研究不足,喀斯特小流域不同降雨等级水化学的最优采样频率尚不明确。[方法] 利用黔中高原典型喀斯特小流域在2022年6月至2023年7月不同降雨等级(大暴雨、大雨、中雨)间隔1 h的高频电导率(EC)数据,重采样为2~15 h的低频数据后,结合多种评价指标和突变点理论,确定喀斯特小流域不同降雨等级下水化学的最优采样频率。[结果] (1)喀斯特小流域受地质背景影响,水化学响应降雨呈现暴涨暴落特征 ...
方长敏, 彭韬, 张志才, 徐少强, 莫小妹, 翟奖, 蒋卫威   +6 more
doaj  

[Evolution and influencing factors of disease burden of depres-sive disorders and depressive levels among Chinese adolescents]. [PDF]

Zhejiang Da Xue Xue Bao Yi Xue Ban
Zeng J, Lin Z, Chen Y, Jin C, Xiao Y, Jiang W.   +5 more
europepmc   +1 more source

[Effect of network literacy on depression levels among young adults: an analysis based on China Family Panel Studies]. [PDF]

Zhejiang Da Xue Xue Bao Yi Xue Ban
Zhang C, Lin P.
europepmc   +1 more source

[Effects of exercise interventions on anxiety and depressive symptoms in patients with fibromyalgia syndrome: a meta-analysis]. [PDF]

Zhejiang Da Xue Xue Bao Yi Xue Ban
Liu D, Li Y, Chen P, Guo Y.
europepmc   +1 more source