Results 91 to 100 of about 27,716 (308)

Clustering Algorithm Reveals Dopamine‐Motor Mismatch in Cognitively Preserved Parkinson's Disease

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective To explore the relationship between dopaminergic denervation and motor impairment in two de novo Parkinson's disease (PD) cohorts. Methods n = 249 PD patients from Parkinson's Progression Markers Initiative (PPMI) and n = 84 from an external clinical cohort.
Rachele Malito, Chiara Meneghini, Alice Galli, Luca Gallo, Pierfrancesco Mitrotti, Paola Dimartino, Marianna Inglese, Cinzia Zatti, Alessandro Lupini, Andrea Pilotto, Alessandro Padovani, Micol Avenali, Enza Maria Valente, Cristina Tassorelli, Silvia P. Caminiti   +14 more
wiley   +1 more source

ESTIMATION OF DISTRIBUTED UNBALANCE OF ROTORS

, 2020
Mass unbalance commonly causes vibration of rotor-bearing systems. Lumped mass modeling of unbalance was adapted in most previous research. The lumped unbalance assumption is adequate for thin disks or impellers, but not for thick disks or shafts.
Chunyi Lin, Tachung Yang
core  

Harmonic distortion and unbalance analysis in multi-inverter photovoltaic systems [PDF]

, 2018
The growing penetration of distributed generation connected to the grid by power electronics converters can adversely affect the power quality. The capability of the system to host large harmonic distortions and unbalance in three-phase systems may be an
Chicco, Gianfranco, Gianfranco Chicco, Gabriele Malgaroli, Angela Russo, Russo, Angela, MALGAROLI, GABRIELE, Spertino, Filippo, Andrea Mazza, Alessandro Ciocia, Ciocia, Alessandro, Mazza, Andrea, Filippo Spertino   +11 more
core   +1 more source

Fluid Biomarkers of Disease Burden and Cognitive Dysfunction in Progressive Supranuclear Palsy

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Identifying objective biomarkers for progressive supranuclear palsy (PSP) is crucial to improving diagnosis and establishing clinical trial and treatment endpoints. This study evaluated fluid biomarkers in PSP versus controls and their associations with regional 18F‐PI‐2620 tau‐PET, clinical, and cognitive outcomes.
Roxane Dilcher, Charles B. Malpas, Stuart J. McDonald, William T. O’Brien, Craig Despott, Kelly L. Bertram, Matthew P. Pase, Lukas Frontzkowski, Meng Law, Terence J. O’Brien, Lucy Vivash   +10 more
wiley   +1 more source

Analysis of Unbalance Effects on a Primary Feeder due to the Winding Connection of Distribution Transformers

, 2012
[[abstract]]The main purpose of this paper is to discuss the unbalance effects on a primary feeder due to the various connections of distribution transformers.
Wen, Kun-Li; Huang, Wei-Tzer
core  

Hosting capacity for photovoltaic inverters considering voltage unbalance

, 2017
 In this paper the hosting capacity considering voltage unbalance is estimated for single-phase photovoltaic inverters (PVIs) in low-voltage distribution networks in Sweden.
Daphne Schwanz, Schwanz, Daphne,, Bollen, Math,, Sarah K. Ronnberg, Rönnberg, Sarah,, Math Bollen   +5 more
core   +1 more source

Improving the measurement quality of rotor imbalance parameters during the spherical circulation motion by using new measuring transducer design

Известия высших учебных заведений. Поволжский регион:Технические науки
Background. Residual unbalance is one of key quality characteristics for rotating parts (rotors). This value determines the upper allowable limit for the rotor rotational speed in specific supports.
I.I. Artemov, A.L. Bryakin, N.S. Kochkin, S.V. Kochkin   +3 more
doaj   +1 more source

Air Pollution and the Risk and Progression of Multiple Sclerosis: A Systematic Review and Meta‐Analysis

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Purpose Air pollution has been linked to several neurological conditions, including stroke and neurodegenerative diseases. Evidence regarding its association with multiple sclerosis (MS) remains conflicting, limited by small sample sizes. Methods PubMed, Embase, Scopus, and Cochrane controlled register of trials (CENTRAL) were searched on ...
Ahmad A. Toubasi, Thuraya N. Al‐Sayegh
wiley   +1 more source

Power quality complex estimation at alternating current traction substations

Nauka ta progres transportu, 2013
Purpose. At alternating current traction substations are used three-winding transformers. This scheme comes to significant costs from power quality disturbances at each supplier.
D.O. Bosiy
doaj  

Intelligent system design for identification of unbalance and misalignment using Fuzzy Logic methods

Jurnal Ilmiah SINERGI
Vibration analysis identifies emerging vibration problems before they become unmanageable and cause unforeseen delays. This can be accomplished by monitoring engine vibration continuously or at specific intervals.
Dedik Romahadi, Dafit Feriyanto, Fajar Anggara, Fathoni Putra Wijaya, Wang Dong   +4 more
doaj   +1 more source