Results 171 to 180 of about 80,855 (244)

Reducing Motion Artifact in High Resolution 7 T MRI Using the Magnetic Resonance Minimal Motion (“MR‐MinMo”) Head Stabilization Device

open access: yesMagnetic Resonance in Medicine, EarlyView.
ABSTRACT Purpose To evaluate the effectiveness of the MR‐MinMo head stabilization device in mitigating motion artifacts during long‐duration, high‐resolution 7 T MRI scans, with and without retrospective motion correction Methods The MR‐MinMo was tested on seven pediatric and 12 adult healthy volunteers using 0.6 mm isotropic, 3D Multi‐Echo Gradient ...
Jyoti Mangal   +10 more
wiley   +1 more source

Finite‐Time Disturbance Observer‐Based Nonlinear Robust Adaptive Control of Hydraulic Manipulator With Parameter Identification

open access: yesInternational Journal of Mechanical System Dynamics, EarlyView.
ABSTRACT Hydraulic manipulators exhibit strong coupling, pronounced nonlinearities, and significant modeling uncertainties, which hinder high‐precision motion control. This paper proposes a finite‐time disturbance observer–based nonlinear robust adaptive control (RAC‐FTDO) framework enhanced by a physically consistent dynamic parameter identification ...
Tianyu Gao   +3 more
wiley   +1 more source

Robust Position Control of an Electro‐Hydraulic Actuator via Metaheuristic Optimization of a Fractional‐Order PID Controller

open access: yesInternational Journal of Mechanical System Dynamics, EarlyView.
ABSTRACT In this study, a robust position control strategy is presented for a two‐stage electro‐hydraulic actuator system using a fractional‐order proportional–integral–derivative (FOPID) controller tuned by Kirchhoff's law algorithm (KLA). Electro‐hydraulic systems exhibit strong nonlinearities, parameter uncertainties, and external disturbances ...
Ridvan Firat Cinar   +8 more
wiley   +1 more source

Interventions and Perinatal Outcomes Associated With Recipient Twin Cardiomyopathy in the Setting of Twin‐To‐Twin Transfusion Syndrome: A Systematic Review

open access: yesPrenatal Diagnosis, EarlyView.
ABSTRACT Objective To determine (1) Whether the presence and severity of recipient twin cardiomyopathy in the setting of twin‐to‐twin transfusion syndrome are associated with worse perinatal outcomes when compared to recipient twins without evidence of cardiomyopathy and (2) The optimal management strategy to reduce the likelihood of adverse perinatal ...
Briana Tolbert   +7 more
wiley   +1 more source

Recent advances in Joule‐heating synthesis of functional nanomaterials for photo and electrocatalysis

open access: yesPhotoMat, EarlyView.
This paper presents a comprehensive overview of recent advancements in Joule‐heating synthesis of photo and electrocatalysts, emphasizing its benefits and applications. The objective is to offer an effective strategy for enhancing the diversity and performance of catalytic materials.
Jiaqi Li   +4 more
wiley   +1 more source

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