Results 81 to 90 of about 283,894 (302)

Flow-Induced Vibrations of a Square Cylinder in the Combined Steady and Oscillatory Flow

open access: yesJournal of Marine Science and Engineering
The paper presents a two-dimensional RANS–SST k–ω investigation of vortex-induced vibration of a square cylinder with two degrees of freedom under combined steady and oscillatory flow at the Reynolds number of 5000, Keulegan–Carpenter number of 10, mass ...
Henry Francis Annapeh   +1 more
doaj   +1 more source

Generalized lock-in amplifier for precision measurement of high frequency signals

open access: yes, 2013
We herein formulate the concept of a generalized lock-in amplifier for the precision measurement of high frequency signals based on digital cavities. Accurate measurement of signals higher than 200 MHz using the generalized lock-in is demonstrated.
Edman, Fredrik   +6 more
core   +1 more source

Low Incidence of Relapses After Vaccination in Anti‐Aquaporin‐4 Antibody‐Positive NMOSD

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Patients with neuromyelitis optica spectrum disorder (NMOSD) may experience increased signs and symptoms of their underlying disease when vaccinated against meningococcal disease before receiving complement component 5 inhibitor therapies. This retrospective analysis indicated an overall low relapse incidence (mean [range], 3.3% [0.7%–10.6 ...
Sean J. Pittock   +4 more
wiley   +1 more source

A technique to eliminate false lock in PCM demodulation [PDF]

open access: yes, 1973
One loop provides error signal which adjusts voltage controlled oscillator. Second loop multiplies input signal with generated in-phase signal. Both signals are integrated over bit period.
Kobayashi, H. S.
core   +1 more source

Development and Evaluation of a Tutorial to Improve Students' Understanding of a Lock-in amplifier

open access: yes, 2016
A lock-in amplifier is a versatile instrument frequently used in physics research. However, many students struggle with the basic operating principles of a lock-in amplifier which can lead to a variety of difficulties. To improve students' understanding,
DeVore, Seth   +3 more
core   +2 more sources

Multiple Sclerosis Relapse Activity After Ozanimod Discontinuation in DAYBREAK Trial Participants

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
Multiple Sclerosis Relapse Activity After Ozanimod Discontinuation in DAYBREAK Trial Participants. ABSTRACT Objective Return of disease activity is expected when patients discontinue disease‐modifying therapy (DMT) for multiple sclerosis (MS). Some MS DMTs are associated with higher‐than‐expected disease activity (rebound) after discontinuation.
Ralf Gold   +12 more
wiley   +1 more source

Experimental Investigation on Vortex-Induced Vibration of a Flexible Pipe under Higher Mode in an Oscillatory Flow

open access: yesJournal of Marine Science and Engineering, 2020
Different from the previous studies of the vortex-induced vibration (VIV) dominated by first mode of flexible pipe in an oscillatory flow, the features of a higher mode dominated are experimentally investigated in the ocean basin.
Haojie Ren   +6 more
doaj   +1 more source

Added Prognostic Value of EEG Reactivity in Comatose Patients Following Cardiac Arrest

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objectives To evaluate the added prognostic value of EEG reactivity for favorable outcome compared with background analysis during and after targeted temperature management (TTM). Methods Prospective observational cohort study of comatose post–cardiac arrest patients admitted to a single academic center between 2017 and 2022, all undergoing ...
Sarah Caroyer   +11 more
wiley   +1 more source

LOCK HOSPITAL. [PDF]

open access: yesThe Lancet
n ...
Leach, S. F., Knox, GeoF
openaire   +4 more sources

IE WP 23/04 Prospective Voluntary Agreements to Escape Carbon Lock-in [PDF]

open access: yes
The paper looks for co-evolutionary policy responses to carbon lock-in – a persistent state that creates systemic market and policy barriers to carbon low technological alternatives.
Gregory C. Unruh   +2 more
core  

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