Results 131 to 140 of about 2,618,043 (321)

A self-calibration approach for optical long baseline interferometry imaging

, 2008
Current optical interferometers are affected by unknown turbulent phases on each telescope. In the field of radio-interferometry, the self-calibration technique is a powerful tool to process interferometric data with missing phase information. This paper
Benson, Cornwell, Demoment, Fried, Guy Le Besnerais, Haniff, Hogbom, Jennison, Lannes, Lannes, Lannes, Laurent M. Mugnier, Lawson, Meimon, Nityananda, Pauls, Perrin, Perrin, Schloerb, Serge Meimon, Thiébaut   +20 more
core   +1 more source

Diffusion‐Weighted Imaging for the Evaluation of the Sacroiliac Joint in Pediatric Patients

Arthritis Care &Research, Accepted Article.
Background Maturational signal in the sacroiliac joint (SIJ) of skeletally immature youth is often misinterpreted as inflammation. Diagnostic tools that improve specificity are greatly needed. Apparent diffusion coefficient (ADC) values from diffusion‐weighted imaging (DWI), when used with standard imaging, may enhance diagnostic accuracy.
Michael L. Francavilla, Timothy G. Brandon, Dmitry Khrichenko, Rui Xiao, Nancy A. Chauvin, Asef Khwaja, Pamela F. Weiss   +6 more
wiley   +1 more source

Synchronous Atmospheric Correction of Wide-Swath and Wide-Field Remote Sensing Image from HJ-2A/B Satellite

Remote Sensing
The Chinese HuanjingJianzai-2 (HJ-2) A/B satellites are equipped with advanced sensors, including a Multispectral Camera (MSC) and a Polarized Scanning Atmospheric Corrector (PSAC).
Honglian Huang, Yuxuan Wang, Xiao Liu, Rufang Ti, Xiaobing Sun, Zhenhai Liu, Xuefeng Lei, Jun Lin, Lanlan Fan   +8 more
doaj   +1 more source

Optical Relative Calibration and Stability Monitoring for the Auger Fluorescence Detector

, 2005
The stability of the fluorescence telescopes of the Pierre Auger Observatory is monitored with the optical relative calibration setup. Optical fibers distribute light pulses to three different diffuser groups within the optical system.
Aramo, C., Brack, J., Caruso, R., D'Urso, D., Fazio, D., Fonte, R., Gemmeke, H., Insolia, A., Kleifges, M., Knapik, R., Martino, J. Rodriguez, Matthews, J. A. J., Menshikov, A., Miller, W., Pierre Auger Collaboration, Privitera, P.   +15 more
core   +2 more sources

Accuracy of diagnostic codes and algorithms used to identify rheumatoid arthritis and juvenile idiopathic arthritis in administrative claims and electronic health records: systematic review and meta‐analysis.

Arthritis Care &Research, Accepted Article.
Objective This systematic review aimed to assess the diagnostic accuracy of algorithms used to identify rheumatoid arthritis (RA) and juvenile idiopathic arthritis (JIA) in electronic health records (EHRs). Methods We searched MEDLINE, Embase, and CENTRAL databases and included studies that validated case definitions against a reference standard such ...
Constanza Saka‐Herrán, Jessica Bennett, Yara Alkabti, Muhammad Fatir, Barbara Clyne, Caroline McCarthy, Gráinne Tynan, Nikki Dunne, Michelle Flood, Eoghan McCarthy, Frank Moriarty   +10 more
wiley   +1 more source

Ultrasonic calibration device [PDF]

, 1973
Device is an instrument for producing known changes in both acoustic absorption and phase velocity. Calibration signal arises from actual change of acoustic parameters, not from electrical simulation. Instrument is able to simulate changes in sensitivity
Heyman, J. S., Miller, J. G.
core   +1 more source

Association between Discordance of Disease Activity Indices and Quantitative Sensory Testing Measures of Nociplastic Pain in Patients with Rheumatoid Arthritis

Arthritis Care &Research, Accepted Article.
Objective This study investigates the association between discordance in commonly collected clinical indicators of rheumatoid arthritis (RA) disease activity and abnormalities in quantitative sensory testing (QST) observed in individuals with nociplastic pain.
Clarice P. Lin, Burcu Aydemir, Jing Song, Lutfiyya N. Muhammad, Tuhina Neogi, Wendy Marder, Clifton O. Bingham, Marcy B. Bolster, Daniel J. Clauw, Dorothy D. Dunlop, Yvonne C. Lee   +10 more
wiley   +1 more source

Strain gage calibration [PDF]

, 1984
A temporary bonding system for accurately predetermining the individual apparent strain curve characteristics of the gages is used, and subsequently employs a computer to watch the apparent strain curves of the individual gages to determine which gages ...
Moore, T. C.
core   +1 more source

Infrared Neural Stimulation Elicits Distinct Molecular Pathways in Astrocytes Based on Laser Pulse Parameters

Advanced Biology, EarlyView.
Infrared (IR) light evokes distinct calcium and water transport responses in astrocytes, depending on stimulation duration and protocol. This study uses widefield imaging and pharmacology to reveal differential engagement of astroglial signaling pathways.
Wilson R. Adams, Ana I Borrachero‐Conejo, Pratheepa Kumari Rasiah, Emanuela Saracino, Roberto Zamboni, Eric Duco Jansen, Valentina Benfenati, Anita Mahadevan‐Jansen   +7 more
wiley   +1 more source

Hydrogel‐Based Capacitive Sensor Model for Ammonium Monitoring in Aquaculture

Advanced Engineering Materials, EarlyView.
Traditional techniques for monitoring aquaculture water quality, particularly ammonium levels, harm fish. This work presents a novel capacitive sensor with an ionic hydrogel transducer to monitor ammonium concentration in real time based on the ammonium‐induced hydrogel dissociation and osmotic pressure. Monitoring aquaculture water quality, especially
Mohammad Mirzaee, Mahdi Askari‐sedeh, Ali Zolfagharian, Mostafa Baghani   +3 more
wiley   +1 more source