Results 61 to 70 of about 166,033,218 (291)

Upper Cervical Cord Area as a Biomarker of Conversion to Secondary Progressive Multiple Sclerosis

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective This study assessed whether upper cervical cord area (UCCA) measured on routine brain MRI can serve as a biomarker of conversion to SPMS. Methods This is a single‐center retrospective cohort study of RRMS patients with cross‐sectional and longitudinal analyses of clinical and MRI data. Future SPMS converters were matched by age, sex,
Nabil K. El Ayoubi, Sola Al Ghazal, Salem Hannoun, Medhat A. Siddik, Nour M. Najjar, Jim Dagher, Joseph Abboud, Myriam G. Semaan, Samia J. Khoury   +8 more
wiley   +1 more source

Relative assessment of different turbulence models in prediction of airfoil characteristics for a wide range of angle of attack [PDF]

Simulation of separated flow past an airfoil beyond stall, along with the prediction of stall itself still remains a challenging problem. In practical design and analysis problems of aerodynamics involving turbulent flow, the most widely used ...
Majumdar, Sekhar, Kulkarni, DS, Sarkar, S   +2 more
core  

The interaction between flow-induced vibration mechanisms of a square cylinder with varying angles of attack [PDF]

, 2012
This study examines the influence of angle of attack of a square section cylinder on the cylinder’s flow-induced vibration, where the direction of the vibration is transverse to the oncoming flow.
Nemes, Andras, Zhao, Jisheng, Lo Jacono, David, Sheridan, John   +3 more
core   +1 more source

Gravity‐Dependent Modulation of Downbeat Nystagmus: Insights From Velocity‐Storage Dysfunction

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Downbeat nystagmus varies with head position, a phenomenon termed gravity‐dependent modulation. We aimed to clarify its mechanism using a velocity‐storage model. Methods In 10 patients with downbeat nystagmus due to cerebellar disorders, we recorded eye movements at different pitch‐ and roll‐axis head positions.
Ji‐Hyung Park, Eun‐Hyuk Choi, Jorge Otero‐Millan, David S. Zee, Jeong‐Yoon Choi, Ji‐Soo Kim   +5 more
wiley   +1 more source

The effectiveness of early lens extraction with intraocular lens implantation for the treatment of primary angle-closure glaucoma (EAGLE): study protocol for a randomized controlled trial [PDF]

, 2011
Glaucoma is the leading cause of irreversible blindness. Although primary open-angle glaucoma is more common, primary angle-closure glaucoma (PACG) is more likely to result in irreversible blindness.
Burr, JM, Vale L., Azuara-Blanco, Augusto; id_orcid, Gla, EIA-C, Friedman, D, Jimmy Lai, Cochran C., Ramsay C., Nolan, W, Cochran, C, Ramsay, C, Quayyum Zahidul, Azuara-Blanco A., Aung T., McDonald, A, Cochran, Claire, AzuaraBlanco, A, Zahidul Quayyum, McPherson, Gladys, Ramsay, Craig, Foster P., Friedman David, Lai Jimmy, Norrie, John David Taylor, Cochran Claire, McPherson Gladys, McDonald, Alison, Vale, L, Ramsay Craig, Winnie Nolan, Alison McDonald, Burr J.M., Burr, Jennifer M., Aung Tin, Paul Chew, null null, Azuara-Blanco, A, Quayyum, Z, McPherson, G, Azuara-Blanco, Augusto, Burr, Jennifer M, Quayyum, Zahidul, Effectiveness in Angle-closure Glaucoma of Lens Extraction (EAGL, Lai, Jimmy, Augusto Azuara-Blanco, Tin Aung, Foster, P, Norrie, John, Chew Paul, Burr Jennifer M, Foster, Paul, Effectiveness in Angle-closure Glaucoma of Lens Extraction (EAGLE) Study Group, Claire Cochran, David Friedman, Chew, Paul, Nolan, Winnie, Vale, Luke, Friedman D., Lai, J, Friedman, David, Chew P., McPherson G., Foster Paul, Norrie John, Norrie J., John Norrie, Lai J., Aung, T, Aung, Tin, Vale Luke, Craig Ramsay, Gladys McPherson, Paul Foster, McDonald A., McDonald Alison, Jennifer M Burr, Norrie, J, Chew, P, Nolan Winnie, Luke Vale, Quayyum Z., Nolan W., Azuara-Blanco Augusto   +82 more
core   +2 more sources

Plunging Airfoil: Reynolds Number and Angle of Attack Effects [PDF]

, 2020
Natural flight has consistently been the wellspring of many creative minds, yet recreating the propulsive systems of natural flyers is quite hard and challenging.
Neves, Fernando M. S. P., Camacho, Emanuel, Emanuel A. R. Camacho, Silva, André, Barata, Jorge M. M., Emanuel A. Camacho, Andre R. Silva, Fernando Neves, Fernando M. S. P. Neves, André R. R. Silva, Jorge M. M. Barata, Camacho, E. A. R., Jorge Barata, Silva, A. R. R., Barata, Jorge M M   +14 more
core   +1 more source

Catapult take off control based on model predictive control

Hangkong gongcheng jinzhan
After separating from the catapult and leaving the flight deck，carrier-based aircraft face multiple constraints including sink rate，angle of attack，and pitch rate to ensure flight safety and quality. Traditional angle-of-attack protection control methods
QIAN Guohong, WEN Zixia, QIU Xin, HUANG Xudong, SHI Ziwei   +4 more
doaj   +1 more source

Stage‐Dependent β‐Synuclein Links MRI and Cognitive Decline in Alzheimer's Disease

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Synaptic degeneration drives cognitive decline in Alzheimer's disease (AD), but synaptic biomarkers are scarce. Brain‐enriched β‐synuclein emerged as a synaptic damage marker. We investigated its diagnostic, prognostic, and structural correlates across the AD continuum.
Ulaş Ay, Merve Alaylioglu, Erdi Sahin, Sanem Sultan Yoruk Oner, Gulce Iskan, Gulce Cosku Yilmaz Cakan, Gozde Kizilates‐Evin, Emre Hari, Elif Kurt, Erdinc Dursun, Basar Bilgic, Hasmet Hanagasi, Hakan Gurvit, Tamer Demiralp, Duygu Gezen‐Ak, Bedia Samanci   +15 more
wiley   +1 more source

The angle of attack and side-slip angle estimation for civil aircraft

Journal of Physics: Conference Series, 2023
Abstract The angle of attack and side-slip angle are two important flight parameters that directly affect the flight safety of civil aircraft. This paper studies the estimation method for the angle of attack and side-slip angle according to air-data system, inertial navigation system, and aircraft aerodynamic data to improve flight ...
openaire   +1 more source

Comparative Analysis of Choroid Plexus Volume Between MOG Antibody Associated Disease and Multiple Sclerosis

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Choroid plexus volume (CPV) has been proposed as a neuro‐immunological marker of multiple sclerosis (MS), but its relevance in myelin oligodendrocyte glycoprotein antibody–associated disease (MOGAD) remains uncertain. We analyzed CPV in 43 individuals with MOGAD, 48 with MS, and 44 healthy controls using a Bayesian Gaussian mixture modeling ...
Jae‐Won Hyun, Shaun G. Hong, Na Young Park, Su‐Hyun Kim, Ho Jin Kim   +4 more
wiley   +1 more source