Results 121 to 130 of about 29,420 (189)

Controlled Mechanical Anisotropy in 3D‐Printed Thermoplastic Elastomeric Composites

Macromolecular Materials and Engineering, EarlyView.
This work achieves controlled mechanical anisotropy through the spatial arrangement of soft and rigid segments using ABS+TPE core–shell filaments. Unidirectional raster localization enables targeted bending, providing precise mechanical control.
Nikhil A. Patil, Weidi Wang, Juhyeong Lee, Drupad KadiyalaBhavani, Alireza Amirkhizi, Timothy J. Lawton, Eric D. Wetzel, Jay H. Park   +7 more
wiley   +1 more source

Cold EI—The Way to Improve GC‐MS and Increase Its Range of Applications

Mass Spectrometry Reviews, EarlyView.
ABSTRACT Gas chromatography‐mass spectrometry (GC‐MS) with Cold electron ionization (EI) is based on interfacing the GC and MS with a supersonic molecular beam (SMB) along with electron ionization of vibrationally cold sample compounds in the SMB in a contact‐free fly‐through ion source (hence the name Cold EI).
Aviv Amirav, Benny Neumark, Oneg Elkabets, Alex Yakovchuk   +3 more
wiley   +1 more source

Free‐breathing phase‐sensitive inversion recovery T1‐weighted imaging for improved visualization of focal liver lesions

Magnetic Resonance in Medicine, EarlyView.
Abstract Purpose Gadoxetic acid‐enhanced hepatobiliary phase T1‐weighted (T1w) MRI is effective for the detection of focal liver lesions but lacks sufficient T1 contrast to distinguish benign from malignant lesions. Although the addition of T2, diffusion, and dynamic contrast‐enhanced T1w imaging improves lesion characterization, these methods often do
Yavuz Muslu, Julius F. Heidenreich, Jan‐Peter Grunz, Ty A. Cashen, Sagar Mandava, Ali Pirasteh, Diego Hernando, Scott B. Reeder   +7 more
wiley   +1 more source

Optimized motion‐insensitive PDFF mapping of the liver

Magnetic Resonance in Medicine, EarlyView.
Abstract Purpose To implement, optimize, and validate parallel imaging (PI)‐accelerated, 2D, flip angle modulated (FAM) chemical shift‐encoded quantification of liver proton‐density fat fraction (PDFF), with motion insensitivity. Methods The optimization cost function that determines flip angles in FAM was generalized for PI.
Jiayi Tang, Daiki Tamada, Raphael do Vale Souza, Aaron Faacks, Jitka Starekova, Julius F. Heidenreich, Lukas Müller, Garrett C. Fullerton, Collin J. Buelo, Jeff Kammerman, Jean H. Brittain, Scott B. Reeder, Diego Hernando   +12 more
wiley   +1 more source

A network‐assisted joint image and motion estimation approach for robust 3D MRI motion correction across severity levels

Magnetic Resonance in Medicine, EarlyView.
Abstract Purpose The purpose of this work was to develop and evaluate a novel method that leverages neural networks and physical modeling for 3D motion correction at different levels of corruption. Methods The novel method (“UNet+JE”) combines an existing neural network (“UNetmag”) with a physics‐informed algorithm for jointly estimating motion ...
Brian Nghiem, Zhe Wu, Sriranga Kashyap, Lars Kasper, Kâmil Uludağ   +4 more
wiley   +1 more source

Self‐Navigated, Retrospective, Data‐Consistent Motion Correction for MPnRAGE

Magnetic Resonance in Medicine, EarlyView.
ABSTRACT Purpose To extend and automate a data‐consistent, self‐navigated motion‐correction method for 3D radial T1‐weighted imaging. Methods This method incorporated rigid‐body motion effects into the forward model, solving for parameters that maximize consistency with the data.
John Podczerwinski, Andrew L. Alexander, Brittany G. Travers, James J. Li, Steven R. Kecskemeti   +4 more
wiley   +1 more source

A Data‐Driven Approach to Integrated Adaptive Morphing and Guidance for Cruise Missiles

International Journal of Mechanical System Dynamics, EarlyView.
ABSTRACT To address the complex coupling between aerodynamic characteristics and guidance control for morphing flight missiles, this study proposes a data‐driven approach to integrated adaptive morphing and guidance. Firstly, an aerodynamic surrogate model is constructed using a fully connected neural network (FCNN), mapping the configuration ...
Ming‐Yu Wu, Jiang‐Liu Huang, Xiao‐Wei Cai, Xian‐Jun He, Zhi‐Hua Chen, Chun Zheng, Yi‐Xin Liu   +6 more
wiley   +1 more source

Transient Dynamic Analysis of Piezoelectric Solids by the Spectral Integrated Neural Networks With Large Time Steps

International Journal of Mechanical System Dynamics, EarlyView.
ABSTRACT This study presents a novel neural network architecture called spectral integrated neural networks (SINNs), which combines physics‐informed neural networks (PINNs) with time‐spectral integration techniques to efficiently solve two‐ and three‐dimensional dynamic piezoelectric problems.
Zijie Song, Haodong Ma, Wenzhen Qu, Yan Gu   +3 more
wiley   +1 more source

Numerical Modeling of the Recession and Closure of Planar Hydraulic Fractures: Contact‐Based Versus Asymptotic‐Informed Schemes

International Journal for Numerical and Analytical Methods in Geomechanics, EarlyView.
ABSTRACT We compare two algorithms to simulate the propagation, arrest, recession, and closure of a planar hydraulic fracture, focusing on their ability to capture the physical processes governing fracture recession and closure. The first algorithm is based on a fixed grid with contact detection during recession, while the second is based on a moving ...
Mohsen Talebkeikhah, Andreas Möri, Anthony Peirce, Emmanuel Detournay, Brice Lecampion   +4 more
wiley   +1 more source

Modelling Wetting Collapse, Failure and Deposition of an Unsaturated Slope With Material Point Method

International Journal for Numerical and Analytical Methods in Geomechanics, EarlyView.
ABSTRACT The paper presents the modelling of unsaturated soils with the material point method (MPM), including the effect of wetting leading to the loss of strength and the volumetric collapse. The elastoplastic Clay and Sand Model (CASM) extended to unsaturated conditions, formulated in terms of Bishop's stress and suction, has been implemented in an ...
Gaia Di Carluccio, Luis A. Aviles, Núria M. Pinyol, Eduardo E. Alonso   +3 more
wiley   +1 more source