Results 81 to 90 of about 8,702 (250)

Ultrahigh energy density and improved discharged efficiency in bismuth sodium titanate based relaxor ferroelectrics with A-site vacancy

Journal of Materiomics, 2018
Novel A-site deficient (1-x-y)Bi0.5Na0.5TiO3-xBaTiO3-yBi0.2Sr0.7TiO3 lead-free relaxor ferroelectrics have been explored for energy storage property. Particularly slim polarization hysteresis (P-E) loops are observed in 0.655Bi0.5Na0.5TiO3-0.065BaTiO3-0 ...
Xiao Liu, Jing Shi, Fangyuan Zhu, Huiling Du, Tangyuan Li, Xiangchun Liu, Hai Lu   +6 more
doaj   +1 more source

Dielectric investigation of a new TKWB lead free relaxor

, 2004
A new lead-free tungsten bronze (TKWB) type relaxor derived from Ba1−xSrxNb2O6 and containing Sn was prepared via classical solid state route. A 2.5% Sn:Nb ratio was enough to both induce the relaxor effect and bring the transition temperature close to ...
ELISSALDE, Catherine, VON DER MÜHLL, Régnault, SIMON, Annie, VILLESUZANNE, Antoine   +3 more
core   +1 more source

Neurochemical Endpoints to Inform Early‐Stage Trials of Spinocerebellar Ataxia 2 and 3 in a Multisite Setting

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Neurochemical levels measured by brain MR spectroscopy (MRS) have been proposed as endpoints for clinical trials in early‐stage spinocerebellar ataxia (SCA) trials. We tested their trial‐readiness by quantifying neurochemicals in three affected brain regions in early‐stage cohorts of SCA2 and SCA3, examining their reproducibility in ...
James M. Joers, Yaqiao Wei, Dinesh K. Deelchand, Adam Berrington, Young Woo Park, Guita Banan, Michal Povazan, Jens T. Rosenberg, André J. W. van der Kouwe, Tetsuo Ashizawa, Khalaf O. Bushara, Chiadi U. Onyike, Sub H. Subramony, Jeremy D. Schmahmann, Brian J. Soher, Peter B. Barker, Thomas H. Mareci, Eva‐Maria Ratai, Lynn E. Eberly, Gülin Öz   +19 more
wiley   +1 more source

Phase field modeling of relaxor ferroelectrics and ferroelectric/relaxor composites

, 2016
Relaxor ferroelectrics are a class of disordered crystals with very high piezoelectric effect [1]. In order to reveal its unique physical origins and to explore its application potential, a lot of investigations have been carried out both theoretically ...
Rödel, Jürgen, Xu, Bai-Xiang, Wang, Shuai   +2 more
core  

Electrocaloric effect in La-doped BNT-6BT relaxor ferroelectric ceramics [PDF]

, 2017
Relaxor [(Bi1/2Na1/2)0.94Ba0.06](1-1.5x)LaxTiO3 (x = 0, 0.03, 0.06, 0.09) ceramics (La-doped BNT-6BT) with composition close to the morphotropic phase boundary (MPB) were successfully prepared by using the conventional solid state reaction method.
Xu, Mengxing, Zhang, Qi, Liu, Laijun, Qi Zhang, Wang, Ningzhang, Lucheng Li, Dingkang Xiong, Ping Chen, Li, Lucheng, Ningzhang Wang, Peng, Biaolin, Chen, Ping, Xiong, Dingkang, Biaolin Peng, Laijun Liu, Mengxing Xu   +15 more
core   +1 more source

T1 Over Squared Proton Density Ratio to Characterize Multiple Sclerosis Lesions

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Differentiating remyelinated from demyelinated lesions in MS remains challenging without histological confirmation. This study introduces the T1‐to‐PD2 ratio (TPR) imaging approach and evaluates its ability to characterize MS lesions alongside other quantitative MRI (qMRI) metrics. Methods Thirty individuals with MS (mean age: 47.5 ± 
Sarah J. Wright, Scotty G. McKay, Jean Ramos Bou, Fen Bao, Vivian B. Truong, Chenyang Li, Li Jiang, Anza B. Memon, E. Mark Haacke, Yulin Ge, Yongsheng Chen   +10 more
wiley   +1 more source

Electric Field‐Induced Phase Transition Behaviour in Sodium Bismuth Titanate‐Based Ceramics

Advanced Energy & Sustainability Research
Lead‐free sodium bismuth titanate (Na0.5Bi0.5TiO3, NBT)‐based ceramics have emerged as leading candidates to replace Pb‐based piezoelectric materials due to their promising ferroelectric and piezoelectric performance. Their functional performance remains
Hareem Zubairi, Ge Wang
doaj   +1 more source

Weak-relaxor behaviour in Bi/Yb-doped KNbO3 ceramics

, 2011
Weak-relaxor behaviour was observed in K1−xBixNb1−xYbxO3 ceramics with x = 0.20 and x = 0.30. According to x-ray diffraction analysis, the crystal structure of these ceramics can be described by the cubic centrosymmetric Pmm space group; however Raman ...
Luke Luisman, Feteira, Antonio, Reichmann, K, Antonio Feteira, Klaus Reichmann, Reichmann, Klaus, Luisman, Luke   +6 more
core   +1 more source

Quantitative MRI Uncovers Subtle Cortical Damage in Myelin Oligodendrocyte Glycoprotein Antibody‐Associated Disease

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective To determine whether myelin‐sensitive quantitative MRI reveals microstructural abnormalities in normal‐appearing cortex (NACtx) in myelin oligodendrocyte glycoprotein antibody–associated disease (MOGAD), indicating that conventional MRI underestimates remission residual cortical injury.
Valentina Camera, Agnese Tamanti, Silvia Messina, Nicola Dall'Osto, Teresa Maltempo, Stefano Ziccardi, Matteo Foschi, Maria Grazia Piscaglia, Diana Ferraro, Francesco Crescenzo, Francesca Rossi, Albulena Bajrami, Sabrina Marangoni, Damiano Marastoni, Francesca Benedetta Pizzini, Maria Isabel Leite, Roberta Magliozzi, Patrick Waters, Massimiliano Calabrese, Jacqueline Palace, Ruth Geraldes   +20 more
wiley   +1 more source

Anorectal Dysfunction in Systemic Sclerosis: Clinical Phenotypes and Functional Patterns

Arthritis Care &Research, EarlyView.
Objective The aim of this study was to characterize specific physiologic defects in anorectal dysfunction in systemic sclerosis (SSc) using anorectal manometry (ARM), evaluate associations with gastrointestinal (GI) and extraintestinal clinical phenotypes, and explore potential serologic markers for risk stratification.
Timothy Kaniecki, Alireza Amindarolzarbi, Tsion Abdi, John Clarke, Michael Hughes, Ami A. Shah, Zsuzsanna H. McMahan   +6 more
wiley   +1 more source