Results 41 to 50 of about 60,361 (264)

Association Between Motor Pathway Damage and Motor Deficit in Upper and Lower Limb in People With MS

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Corticospinal tract damage is common in people with MS, but the degree of clinical symptoms varies. We hypothesize that corticospinal tract lesions are more extensive and severe in people with MS with motor impairments in both upper and lower limbs.
Mathilde Liffran, Malo Gaubert, Alice Dufey, Elise Bannier, Audrey Rico, Jean‐Christophe Ferré, Raphaël Chouteau, Laure Michel, Emmanuelle Le Page, Virginie Callot, Bertrand Audoin, Sarah Demortière, Benoît Combès, Anne Kerbrat   +13 more
wiley   +1 more source

基于PRO/E和ADAMS的摆动液压缸建模及动力学仿真

Jixie chuandong, 2010
The structural design and operation principle of rotary hydraulic cylinder are introduced.Using Pro/E software,double-helix transmission model for 60°,50°,40°and 30° thread angle are established.through the interface module Mechanism/Pro of Pro/E and ...
李松柏, 刘义伦, 谢世冠, 刘伟涛   +3 more
doaj  

The Influence of Bit Edge Shape Parameters on Bone Drilling Force Based on Finite Element Analysis

Applied Sciences, 2022
Bone drilling is a common surgery procedure. The drill bit shape directly affects the drilling force. Excessive drilling force may cause bone damage. In this work, on the premise of analyzing and comparing several finite element method (FEM) simulation ...
Tiancheng Huang, Maohua Du, Xuekun Gu, Xiao Cheng   +3 more
doaj   +1 more source

Evaluation of Digital Technologies for Home‐Based Assessment in People With Amyotrophic Lateral Sclerosis

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Digital technologies hold promise for transforming healthcare by enhancing personalized treatments and offer valuable opportunities to improve patient care. Here, we evaluated several novel, self‐administered, home‐based, digital endpoints for their association with corresponding conventional standard clinical measures (primary) in ...
Arne Mueller, Vanessa Vallejo, Mónica Povedano Panadés, Orla Hardiman, Véronique Danel‐Brunaud, Senda Ajroud‐Driss, Philippe Couratier, Jeremy Shefner, Anna Gokey, Mike DiCesare, Erin Lennox, Jens Praestgaard, Lucie Brujin, Peggy Allred, Ram Miller   +14 more
wiley   +1 more source

行星滚柱丝杠副轴向弹性变形的有限元分析

Jixie chuandong, 2012
By taking a planetary roller screw as the research object,the influence of contact angle and helix angle on axial elastic deformation are considered,and the axial elastic deformation of screw pair are calculated with finite element method.It is concluded
马尚君, 刘更, 佟瑞庭, 张晓彩
doaj  

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

Numerical study on screw machines with large helix angles [PDF]

IOP Conference Series: Materials Science and Engineering, 2018
Modelling and performance calculation of screw machines with large helix angles such as a single and multiphase screw pumps by use of Computational Fluid Dynamics is challenging. The numerical procedures explained in literature are based on the 3D numerical meshes generated by series of 2D transverse cross sections which allows mesh to either follow ...
Lu, Y., Kovacevic, A., Read, M. G.
openaire   +2 more sources

Global Rather Than Vertical‐Selective Saccadic Abnormalities in Progressive Supranuclear Palsy

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective To test whether vertical saccades are preferentially affected in Progressive Supranuclear Palsy (PSP). Methods PSP patients (n = 24) were compared to age‐matched controls (n = 94) and two degenerative groups (Alzheimer's disease, n = 20; Lewy body disease, n = 50).
Duy Duan Nguyen, Mark Paine, Soohyun Lee, Amir Fazlollahi, Baibin (Ben) Wang, John D. O'Sullivan, Peter J. Nestor   +6 more
wiley   +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

Helix Angle of a Knit Single Yarn

Journal of the Textile Machinary Society, 1964
研究目的編目を構成する単糸のより角を求めるための理論式を導く.成果糸の中心軸の描く曲線として, V.Leafのモデルを採用し, つぎの理論式を得た.cosβ=dψ/dS/sin (θ/2) [-bcos2θ- (abr) cos (φ0+as) sinθ・cosθ-2rsin (φ0+as) cos2θ√e2-cos2(θ/2) - (abr) sin (φ0+as) sinθ・sin {sin (φ0+as) ・cosθ・r/R} +cos {sin (φ0+as) ・cosθ・r/R} ・ {1+cos (φ0+as) ・r/R} ・ {(abr) cos (φ0+as) sinθ・cosθ-bsin2θ-2rsin (φ0+as) .sin2θ・√e2-cos2 (θ/2)}] (dψ/dS ...
openaire   +2 more sources