Results 71 to 80 of about 12,487 (223)

Factors associated with discordant visual and quantitative amyloid PET results

Alzheimer’s & Dementia: Diagnosis, Assessment & Disease Monitoring
INTRODUCTION Factors underlying discordant visual and quantitative amyloid beta–positron emission tomography (Aβ‐PET) results and their clinical implications are not well understood.
Jasmin E Guevara, Emily F Matusz, Wei‐En Wang, Jesse C DeSimone, Batul Yawer, Jacob Fiala, Shellie‐Anne Levy, Franchesca Arias, Sruti Rayaprolu, Warren W Barker, Michael M Marsiske, Rosie E Curiel Cid, Steven T DeKosky, Nikolaus R McFarland, Melissa J Armstrong, Malek Adjouadi, David E Vaillancourt, Glenn E Smith, David A Loewenstein, Ranjan Duara, Breton M Asken   +20 more
doaj   +1 more source

Remarkable Stability Improvement of ZnO TFT with Al₂O₃ Gate Insulator by Yttrium Passivation with Spray Pyrolysis

Nanomaterials, 2020
We report the impact of yttrium oxide (YOx) passivation on the zinc oxide (ZnO) thin film transistor (TFT) based on Al2O3 gate insulator (GI). The YOx and ZnO films are both deposited by spray pyrolysis at 400 and 350 °C, respectively. The YOx passivated
Jewel Kumer Saha, Ravindra Naik Bukke, Narendra Naik Mude, Jin Jang   +3 more
doaj   +1 more source

Solving the G-problems in less than 500 iterations: Improved efficient constrained optimization by surrogate modeling and adaptive parameter control [PDF]

, 2015
Constrained optimization of high-dimensional numerical problems plays an important role in many scientific and industrial applications. Function evaluations in many industrial applications are severely limited and no analytical information about ...
Bagheri, Samineh, Bäck, Thomas, Emmerich, Michael, Konen, Wolfgang   +3 more
core   +2 more sources

Cerebrospinal fluid Aβ42/40 corresponds better than Aβ42 to amyloid PET in Alzheimer’s disease [PDF]

, 2016
Background: Decreased concentrations of amyloid-β 1-42 (Aβ(42)) in cerebrospinal fluid (CSF) and increased retention of Aβ tracers in the brain on positron emission tomography (PET) are considered the earliest biomarkers of Alzheimer’s disease (AD ...
Blennow, Kaj, Eusebi, Paolo, Fagan, Anne M, Kornhuber, Johannes, Lewczuk, Piotr, Matzen, Anja, Molinuevo, Jose Luis, Morris, John C, Parnetti, Lucilla   +8 more
core   +3 more sources

circPDE4B downregulation triggers GEMIN5‑dependent translational stress response and autophagy to reduce MAPT pathology

Alzheimer's &Dementia, Volume 22, Issue 5, May 2026.
Abstract INTRODUCTION Circular RNAs (circRNAs) are emerging as key regulators of gene expression, synaptic plasticity, and neuronal function in Alzheimer's disease (AD). Here, we characterize the biological actions of circPDE4B, a highly expressed circRNA markedly reduced in AD. METHODS circPDE4B knockdown in neuronal progenitor cells was combined with
Sambhavi Puri, Sophie J. F. van der Spek, Mintao Lin, Zihan Wang, Jacob Porter, Junming Hu, Liyuan Hu, Alejandro N. Rondón‐Ortiz, Alexander Knyshov, Jenna L. Libera, Scott E. Counts, Debomoy K. Lahiri, Julia TCW, Andrew Emili, Xiaoling Zhang, Benjamin Wolozin   +15 more
wiley   +1 more source

Linear Active Disturbance Rejection Control for Processes With Time Delays: IMC Interpretation

IEEE Access, 2020
This paper investigates linear active disturbance rejection control (ADRC) for processes with time delay. In the past years several modified active disturbance rejection control methods, including Smith predictor based ADRC (SP-ADRC), predictor observer ...
Caifen Fu, Wen Tan
doaj   +1 more source

Practice-centred approach to research in design [PDF]

, 2000
This paper gives an overview of practice-centred research programmes at Sheffield Hallam University and discusses the principles behind practice-centred research, its place in the Design School, its effect on the regional economy and the community and ...
Chamberlain, C., Roddis, J., Rust, C.
core  

ADRC, una estrategia de control robusto

Letras ConCiencia TecnoLógica, 2019
Este artículo pretende ilustrar la estrategia conocida como Control por Rechazo Activo de Perturbaciones (ADRC por sus siglas en inglés), por medio del problema de seguimiento de posición de una esfera metálica en un le- vitador magnético. Este enfoque de control permite realizar estimaciones por medio de observadores lineales de dinámicas no modeladas,
Álvaro Cortés Prieto, Nelson Castañeda Arias, Carlos Vergara Ramírez   +2 more
openaire   +2 more sources

Association of plasma biomarkers with amyloid and tau PET in pre‐dementia stages

Alzheimer's &Dementia, Volume 22, Issue 5, May 2026.
Abstract INTRODUCTION Measuring plasma biomarkers effectively assesses early‐stage Alzheimer's disease. METHODS Subjects were categorized as cognitively unimpaired (CU) (n = 66), CU with subjective cognitive decline (SCD) (n = 100), and mild cognitive impairment (MCI) (n = 25).
Allal Boutajangout, Arjun V. Masurkar, Ricardo Osorio, Ludovic Debure, Mobeena Ghuman, Wajiha Ahmed, Alok Vedvyas, Elizabeth Pirraglia, Jon Links, Louisa Bokacheva, Brianna Vega, Mark A. Bernard, Karyn Marsh, Omonigho M Bubu, Yongzhao Shao, Joshua Chodosh, Henry Rusinek, Thomas Wisniewski   +17 more
wiley   +1 more source

Comparison of linear and nonlinear active disturbance rejection control method for hypersonic vehicle [PDF]

, 2016
Near space hypersonic vehicles have features of strong coupling, nonlinearity and acute changes in aerodynamic parameters, which are challenging for the controller design. Active disturbance rejection control (ADRC) method does not depend on the accurate
Gao, Ke, Song, Jia, Wang, Lun, Yang, Erfu   +3 more
core   +1 more source