Results 61 to 70 of about 1,675,720 (296)

Boundary‐Dependent Sleep–Wake Dysregulation in Idiopathic Hypersomnia

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Idiopathic hypersomnia (IH) presents with excessive daytime sleepiness (EDS) despite apparently preserved nocturnal sleep, challenging traditional models of hypersomnolence based on sleep loss or fragmentation. We aimed to test the hypothesis that EDS in IH reflects excessive stabilization of the sleep state, consistent with ...
Samantha Mombelli   +13 more
wiley   +1 more source

The impact of DC bias on electrical tree growth characteristics in epoxy resin samples [PDF]

open access: yes, 2015
The effect of DC bias on electrical tree growth characteristics in epoxy resin samples is investigated, using three waveforms types: AC, AC with positive DC bias, and AC with negative DC bias. Point-to-plane samples were used.
Rowland, S. M.; id_orcid   +3 more
core   +1 more source

Vibration and noise mechanism of a 110 kV transformer under DC bias based on finite element method

open access: yesGlobal Energy Interconnection
Global energy and environmental issues are becoming increasingly problematic, and the vibration and noise problem of 110 kV transformers, which are the most widely distributed, have attracted widespread attention from both inside and outside the industry.
Ziyang Li   +5 more
doaj   +1 more source

The Association of Amyloid‐β and Tau With Synaptic Dysfunction in Alzheimer's Disease

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective To clarify the relative contributions of amyloid and tau to synaptic dysfunction in Alzheimer's disease (AD). Methods We included 109 cognitively unimpaired and impaired individuals from the Geneva Memory Center with available CSF synaptic biomarkers (neurogranin, SNAP‐25, GAP‐43). Participants were stratified according to amyloid (A)
Fausto Roveta   +11 more
wiley   +1 more source

DC Bias Dependent Dynamic Properties of Injection Lasers (Part B) [PDF]

open access: yes, 1977
One of two project reports. Part A can be found at: http://hdl.handle.net/11375/17866 It was observed that the spontaneous carrier lifetimes of GaAlAs injection lasers, as measured by the time delay method, exhibit a strong dependence on the DC bias ...
Goodwin, John C.
core   +1 more source

Discordance Between Patient and Physician Global Assessments in Early Systemic Sclerosis

open access: yesArthritis Care &Research, EarlyView.
Objective This study aims to identify factors associated with patient global assessment (PtGA) and physician global assessment (PhGA) and discordance between them in systemic sclerosis (SSc). Methods Data from adults with early SSc (<5 years) from the Collaborative National Quality and Efficacy Registry were included.
Ellen Romich   +35 more
wiley   +1 more source

Ist Krieg reine Männersache? (Interview mit Leandra Bias)

open access: yes, 2022
Serie Friedensförderung, Folge 4: 27 bewaffnete Konflikte gibt es zurzeit auf der Welt, und wie immer in der Menschheitsgeschichte sind die Schlüsselakteure Männer. Ist Krieg ein Kind der Männer und können Frauen die Sicherheitspolitik verändern?
Bias, Leandra
core  

Calculation and control of DC bias current distribution in an AC power system around a typical ±800 kV DC grounding electrode

open access: yesThe Journal of Engineering, 2019
When the ultra-high-voltage direct current (UHVDC) transmission system operates in a monopolar ground return mode, an enormous DC current flows into earth via the DC grounding electrode in the converter station and then comes into the AC system around ...
Fangjie Wu   +3 more
doaj   +1 more source

Real‐World Safety and Effectiveness of JAK Inhibitors in Systemic Sclerosis: A Propensity‐Matched Study From the EUSTAR Cohort

open access: yesArthritis Care &Research, EarlyView.
Objective JAK inhibitors (JAKi) have shown promising effects in early‐phase studies of systemic sclerosis (SSc). We aimed to assess the safety and explore the effectiveness of JAKi compared to conventional immunosuppressants in SSc. Methods A longitudinal retrospective study of the European Scleroderma Trials and Research Group (EUSTAR) cohort was ...
Stefano Di Donato   +27 more
wiley   +1 more source

Magnetostriction of Silicon Steel Sheets and Its Application in Predicting DC Bias

open access: yesEnergies
DC bias is a primary cause of anomalous vibration and noise in power transformers. This study investigates the magnetostriction characteristics of grain-oriented silicon steel sheets under simultaneous AC excitation and DC bias. A novel prediction method
Hui Lou, Zhuangzhuang Ding, Kaixing Hong
doaj   +1 more source

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