Results 91 to 100 of about 145,687 (306)

Diffusion Spectrum Imaging Maps Early Axonal Loss and a Unique Progressive Signal in Neuronal Intranuclear Inclusion Disease

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective To delineate specific in vivo white matter pathology in neuronal intranuclear inclusion disease (NIID) using diffusion spectrum imaging (DSI) and define its clinical relevance. Methods DSI was performed on 42 NIID patients and 38 matched controls.
Kaiyan Jiang, Yixiu Pei, Xiaobao Hu, Ying Xiong, Fang Wang, Yanyan Yu, Min Zhu, Dandan Tan, Meihong Zhou, Daojun Hong, Fuqing Zhou   +10 more
wiley   +1 more source

Estimation of Evolutionary Spectra of Monitored Seismic Ground Motions by Transformation of Correlation Functions

Shock and Vibration, 2015
Spatially varying seismic ground motions recorded by distributed structural health monitoring systems (SHMS) can be used to improve the performances of civil engineering structures, necessitating estimation of the evolutionary power spectral density as ...
Zhifeng Xu, Li Li, Liang Hu
doaj   +1 more source

Relationship between the Spectral Power Density of Sleep Electroencephalography and Psychiatric Symptoms in Patients with Breathing-related Sleep Disorder. [PDF]

Clin Psychopharmacol Neurosci, 2021
Kang JM, Cho SE, Lee GB, Cho SJ, Park KH, Kim ST, Kang SG.   +6 more
europepmc   +1 more source

Power spectral density analysis

, 1967
Equations for power spectral density function, and for root mean square of power spectral density ...
Hayes, C. D.
core  

Methodology and Power Spectral Density Limits Proposal for Non Intentional Emissions in frequencies below 150 kHz

, 2020
Publisher Copyright: © 2020 IEEE.IEC 61000-2-2 has been evolving to establish compatibility levels for low frequency conducted disturbances and signaling in public low voltage (LV) power supply systems in the frequency range 2 kHz to 150 kHz.
Sendin, Alberto, Perez, Noelia Uribe, Iker Urrutia, Urrutia, Iker, Alberto Sendin, Noelia Uribe Perez, Juan Sebastian Gomez, Marta Castro, Castro, Marta, Gomez, Juan Sebastian, Ibon Arechalde, Arechalde, Ibon   +11 more
core   +1 more source

Angular resolved power spectral density analysis for improving mirror manufacturing

, 2022
S.8692-8698Ultra-precise diamond turning is the method of choice for manufacturing freeform optics. Analyzing surface errors in different spatial frequency ranges has mainly been performed in a one-dimensional representation of the power spectral density
Pertermann, T., Gross, H., Trost, M., Beier, M., Schröder, S., Risse, S., Tünnermann, A., Hartung, J., Eberhardt, R.   +8 more
core   +1 more source

CX3CL1 in Early Detection of Alzheimer's Disease: Plasma Dynamics Across Age and Disease Stages

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Backgrounds Alzheimer's disease (AD) is characterized by amyloid‐beta plaques, tau tangles, and neuroinflammation. C‐X3‐C motif chemokine ligand 1 (CX3CL1, also known as fractalkine), a neuroimmune chemokine implicated in AD pathogenesis, shows inconsistent alterations in plasma/serum across studies.
Ling Wang, Yujie Liu, Fei Li, Xuelin Li, Lanlan Li, Jie Zhang, Yali Xu   +6 more
wiley   +1 more source

Supplemental Fig. S1: Channel-level power spectral density plots

, 2023
Supplementary Figure S1. Channel-level power spectral density plots. Average +/- standard error power for the left hemisphere channel (purple) and right hemisphere channel (green) in each of the corresponding brain areas (rows) for each of the following ...
Amanda Studnicki (16651281)
core   +1 more source

Value of MRI Outcomes for Preventive and Early‐Stage Trials in Spinocerebellar Ataxias 1 and 3

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective To examine the value of MRI outcomes as endpoints for preventive and early‐stage trials of two polyglutamine spinocerebellar ataxias (SCAs). Methods A cohort of 100 participants (23 SCA1, 63 SCA3, median Scale for the Assessment and Rating of Ataxia (SARA) score = 5, 42% preataxic, and 14 gene‐negative controls) was scanned at 3T up ...
Thiago J. R. Rezende, Emilien Petit, Young Woo Park, Sophie Tezenas du Montcel, James M. Joers, Jonathan M. DuBois, H. Moore Arnold, Michal Povazan, Ipek Özdemir, Guita Banan, Romain Valabregue, Philipp Ehses, Jennifer Faber, Chiadi U. Onyike, Peter B. Barker, Jeremy D. Schmahmann, Eva‐Maria Ratai, Sub H. Subramony, Thomas H. Mareci, Khalaf O. Bushara, Henry Paulson, Thomas Klockgether, Alexandra Durr, Tetsuo Ashizawa, Christophe Lenglet, Gülin Öz, READISCA Investigators   +26 more
wiley   +1 more source

Theoretical Analysis of the Noise Power Ratio of Nonlinear Power Amplifiers

Journal of Applied Mathematics, 2016
This paper presents a theoretical analysis and derives the amplifier output noise power spectral density result in a closed form when the input to the amplifier is a band limited Gaussian noise.
Rajendra Kumar
doaj   +1 more source