Results 41 to 50 of about 15,531 (235)

Dynamic Alterations of Amplitude of Low-Frequency Fluctuations in Patients With Drug-Naïve First-Episode Early Onset Schizophrenia [PDF]

Frontiers in Neuroscience, 2020
Abnormalities in static neural activity have been widely reported in early onset schizophrenia (EOS). However, dynamic brain activity alterations over time in EOS are unclear. Here, we investigated whether temporal dynamic changes in spontaneous neural activity are influenced by EOS.
Qiang Li, Qiang Li, Xiaohua Cao, Sha Liu, Sha Liu, Zexuan Li, Zexuan Li, Yanfang Wang, Long Cheng, Chengxiang Yang, Chengxiang Yang, Yong Xu, Yong Xu, Yong Xu   +13 more
openaire   +3 more sources

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

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
doaj   +1 more source

Dynamic alterations of spontaneous neural activity in post-stroke aphasia: a resting-state functional magnetic resonance imaging study

Frontiers in Neuroscience, 2023
Background and purposeThe dynamic alterations in spontaneous neural activity of the brain during the acute phase of post-stroke aphasia (PSA) remain unclear.
Luyao Xu, Hongchun Wei, Zhongwen Sun, Tongpeng Chu, Min Li, Ruhui Liu, Li Jiang, Zhigang Liang   +7 more
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

Design and analysis strategies for robust microbiome ageing research

FEBS Letters, EarlyView.
The gut microbiome changes with age and associates with age‐related morbidity and mortality, establishing it as a potential biomarker and intervention target for ageing. Realising this potential requires methodological rigour, yet distinguishing biological signals from methodological artefacts remains challenging across cohorts. This review provides an
Mark Olenik, İsmail Güderer, Yi Wang, Tayyaba Alvi, Prasoon Pandey, Handan Melike Dönertaş   +5 more
wiley   +1 more source

Polarization‐resolved femtosecond Vis/IR spectroscopy tailored for resolving weak signals in biological samples using minimal sample volume

FEBS Open Bio, EarlyView.
Unique biological samples, such as site‐specific mutant proteins, are available only in limited quantities. Here, we present a polarization‐resolved transient infrared spectroscopy setup with referencing to improve signal‐to‐noise tailored towards tracing small signals. We provide an overview of characterizing the excitation conditions for polarization‐
Clark Zahn, Karsten Heyne
wiley   +1 more source

Altered effective connectivity from cerebellum to motor cortex in chronic low back pain: A multivariate pattern analysis and spectral dynamic causal modeling study

Brain Research Bulletin, 2023
To explore the central processing mechanism of pain perception in chronic low back pain (cLBP) using multi-voxel pattern analysis (MVPA) based on the static and dynamic fractional amplitude of low-frequency fluctuations (fALFF) analysis, and spectral ...
Yilei Chen, Yuchan Yang, Zhigang Gong, Yingjie Kang, Yingying Zhang, Hui Chen, Ke Zeng, Xiubo Men, Jianwei Wang, Yanwen Huang, Hui Wang, Songhua Zhan, Wenli Tan, Wei Wang   +13 more
doaj   +1 more source

A light‐triggered Time‐Resolved X‐ray Solution Scattering (TR‐XSS) workflow with application to protein conformational dynamics

FEBS Open Bio, EarlyView.
Time‐resolved X‐ray solution scattering captures how proteins change shape in real time under near‐native conditions. This article presents a practical workflow for light‐triggered TR‐XSS experiments, from data collection to structural refinement. Using a calcium‐transporting membrane protein as an example, the approach can be broadly applied to study ...
Fatemeh Sabzian‐Molaei, Fredrik Orädd, Konstantinos Magkakis, Magnus Andersson   +3 more
wiley   +1 more source

Virtual flux vector reconstruction of a PWM rectifier

工程科学学报, 2016
The virtual flux space vector of a pulse width modulation (PWM) rectifier usually can be calculated by integrating the grid voltage vector. In practice, the pure integral part is replaced with a first-order low-pass filter (FOLP) to counteract the DC ...
CHEN Tie-zhu, ZHANG Yong-jun, XIAO Xiong, LUO Ling-bo   +3 more
doaj   +1 more source