Results 21 to 30 of about 16,801 (213)

Abnormal Static and Dynamic Local-Neural Activity in COPD and Its Relationship With Pulmonary Function and Cognitive Impairments

Frontiers in Human Neuroscience, 2021
Patients with chronic obstructive pulmonary disease (COPD) are characterized by attenuated pulmonary function and are frequently reported with cognitive impairments, especially memory impairments.
Zhi Lv, Zhi Lv, Qingqing Chen, Yinling Jiang, Panpan Hu, Lei Zhang, Tongjian Bai, Kai Wang, Yongsheng Wang, Xiaoyun Fan   +9 more
doaj   +1 more source

Dynamic local metrics changes in patients with toothache: A resting-state functional magnetic resonance imaging study

Frontiers in Neurology, 2022
ObjectiveTo study the dynamic changes of local metrics in patients with toothache (TA, Toothache) in the resting state, in order to further understand the changes of central neural mechanism in patients with dental pain and its effect on cognition and ...
Mengting Wang, Xin Tang, Bin Li, Tianyi Wan, Xuechao Zhu, Yuping Zhu, Xunfu Lai, Yulin He, Guojin Xia   +8 more
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The Cavitation-Induced Pressure Fluctuations in a Mixed-Flow Pump under Impeller Inflow Distortion

Machines, 2021
To reduce cavitation-induced pressure fluctuations in a mixed-flow pump under impeller inflow distortion, the dynamic pressure signal at different monitoring points of a mixed-flow pump with a dustpan-shaped inlet conduit under normal and critical ...
Huiyan Zhang, Fan Meng, Yunhao Zheng, Yanjun Li   +3 more
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Modeling and Analysis of Amplitude-Frequency Characteristics of Torsional Vibration for Automotive Powertrain

Shock and Vibration, 2020
In the present paper, the amplitude-frequency characteristics of torsional vibration are discussed theoretically and experimentally for automotive powertrain.
Jinli Xu, Jiwei Zhu, Feifan Xia
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Low phase variation digital controlled attenuator with amplitude calibration function

Dianzi Jishu Yingyong, 2023
This paper presents a high accuracy and low phase variation 5-bit digital controlled attenuator (DCA) for Ka-band phased-array system applications.
Li Xiang
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Altered Temporal Dynamics of the Amplitude of Low-Frequency Fluctuations in Comitant Exotropia Patients

Frontiers in Human Neuroscience, 2022
PurposeGrowing evidence reported that patients with comitant exotropia (CE) were accompanied by static cerebral neural activity changes. However, whether the dynamic time-varying of neural activity changes in patients with CE remains unknown.MethodsA ...
Ri-Bo Chen, Shu-Yuan Ye, Chong-Gang Pei, Yu-Lin Zhong   +3 more
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The aberrant dynamic amplitude of low-frequency fluctuations in melancholic major depressive disorder with insomnia

Frontiers in Psychiatry, 2022
BackgroundInsomnia is considered one of the manifestations of sleep disorders, and its intensity is linked to the treatment effect or suicidal thoughts.
Zijing Deng, Zijing Deng, Xiaowei Jiang, Xiaowei Jiang, Wen Liu, Wen Liu, Wenhui Zhao, Wenhui Zhao, Linna Jia, Linna Jia, Qikun Sun, Yu Xie, Yifang Zhou, Yifang Zhou, Ting Sun, Ting Sun, Feng Wu, Feng Wu, Lingtao Kong, Lingtao Kong, Yanqing Tang, Yanqing Tang   +21 more
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Amplitude of low-frequency fluctuations in classical trigeminal neuralgia patients with purely paroxysmal and concomitant continuous pain

Frontiers in Pain Research
BackgroundPurely paroxysmal neuralgia (PP-CTN) and concomitant continuous pain (CCP-CTN) are different subtypes of classical trigeminal neuralgia (CTN).
He Zhao, Shenghui Xie, Xueying Ma, Xue Bai, Yuanjun Song, Qiong Wu, Yang Gao   +6 more
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Numerical Simulations of the NREL Phase VI Wind Turbine with Low-Amplitude Sinusoidal Pitch

Fluids, 2023
Currently, most wind turbine performance analyses and simulations are performed assuming constant pitch and yaw angles during each rotation. Nevertheless, induced vibration or rotor imbalance can affect the pitch or yaw angle within each rotation.
Amir Akbarzadeh, Iman Borazjani
doaj   +1 more source

Dynamic alterations in spontaneous neural activity in patients with attention-deficit/hyperactivity disorder: A resting-state fMRI study

Brain Research Bulletin
Background: To investigate the change of dynamic amplitude of low-frequency fluctuation (dALFF) and dynamic fractional amplitude of low-frequency fluctuation (dfALFF) in patients with attention-deficit/hyperactivity disorder (ADHD), and to explore ...
Rui Hu, Wei Du, Fan Tan, Yong Wu, Chun Yang, Weiwei Wang, Wen Chen, Yanwei Miao   +7 more
doaj   +1 more source