Results 51 to 60 of about 879 (179)

Bronchoscopy Robot with Enhanced Flexibility and Stability via Multi‐Segment Variable Stiffness Catheter

Advanced Intelligent Systems, EarlyView.
This work presents a magnetic bronchoscopy robot with a novel multi‐segment variable stiffness catheter. This catheter can not only move flexibly in the narrow bronchi but also harden according to the need to provide support. Combined with remote wireless magnetic field drive, it provides a more precise and effective solution for biopsy of deep lung ...
Shucong Yin, Bin Huang, Shiyuan Dong, Junhao Wang, Liangshen Zhao, Yang Yang, Bingkun Bao, Hongen Liao, Fang Chen, Tianqi Huang, Boyu Zhang   +10 more
wiley   +1 more source

An Analytical Study on the Thermal Post-Buckling Behaviors of Geometrically Imperfect FRC-Laminated Beams Using a Modified Zig-Zag Beam Model

Aerospace
An asymptotic analytical method is proposed to study the thermal post-buckling behaviors of fiber-reinforced composite (FRC)-laminated beams with geometric imperfections employing a modified zig-zag beam model.
Zhoumi Wang, Qingchun Meng
doaj   +1 more source

Thermally Drawn Bioelectric Catheters: Enabling Proprioceptive Endovascular Navigation

Advanced Intelligent Systems, EarlyView.
This work introduces a novel bioelectric navigation system eliminates the need for harmful fluoroscopy during endovascular surgeries. A bespoke 16‐electrode catheter is fabricated using rapid thermal drawing and laser micro‐machining. Paired with a real‐time tracking algorithm fusing vascular geometry detection and distance estimation, this technology ...
Alex Ranne, Heiko Maier, Jinshi Zhao, Songli Moey, Ayhan Aktas, Manik Chana, Burak Temelkuran, Nassir Navab, Ferdinando Rodriguez y Baena   +8 more
wiley   +1 more source

On the bifurcation analysis of thin multilayer structures by the Asymptotic Numerical Method [PDF]

Journal of Theoretical, Computational and Applied Mechanics
This paper focuses on the stability analysis of multilayer thin shells using the asymptotic numerical method (ANM) combined with Padé approximants. This technique is highly effective for solving nonlinear problems due to its high-order algorithm that ...
Hamza Azzayani, Hamid Zahrouni, Norman Mathieu, Pascal Ventura, Michael Brun, Michel Potier-Ferry   +5 more
doaj   +1 more source

Direct numerical simulations of three-dimensional surface instability patterns in thin film-compliant substrate structures

Scientific Reports, 2021
A comprehensive numerical study of three-dimensional surface instability patterns is presented. The formation of wrinkles is a consequence of deformation instability when a thin film, bonded to a compliant substrate, is subject to in-plane compressive ...
Siavash Nikravesh, Donghyeon Ryu, Yu-Lin Shen   +2 more
doaj   +1 more source

Programmable crack dynamics engineering enables flexible strain sensors with high linearity

FlexMat, EarlyView.
First‐decoupling theoretical framework of crack evolution elucidating the control methods, mechanistic insights, and structure‐activity relationships is established. Crack propagation from uncontrollable randomness systematically evolves into spatially ordered states.
Chunjin Wu, Shaolong Wang, Xu Wang, Heng Zhu, Yongliang Tian, Xinchen Jiang, Xin Rao, Yutong Han, Changrun Wang, Wen‐Yong Lai   +9 more
wiley   +1 more source

Mode Interaction in Wide Plate with Closed Section Longitudinal Stiffeners Under Compression

Engineering Transactions, 1987
Interaction of nearly simultaneous buckling modes in the presence of imperfections is studied. The investigation is concerned with an infinitely wide plate having thin-walled longitudinal stiffeners of trapezoid cross-section under uniform compression ...
Z. Kołakowski
doaj  

Modern analysis of axisymmetric shells with AQUINAS: A MATLAB finite element toolbox

SoftwareX, 2023
AQUINAS is a specialised MATLAB finite element (FE) toolbox for the nonlinear analysis of axisymmetric thin-walled shell systems, conceived by the Authors to recover a research functionality once widely available but now largely lost in the age of ...
Achilleas Filippidis, Adam J. Sadowski
doaj   +1 more source

Laryngeal Cryotherapy for Neurogenic Cough: Safety, Feasibility, and Prospective Outcomes

The Laryngoscope, EarlyView.
A prospective clinical trial investigated the safety and clinical outcomes of office‐based selective laryngeal cryotherapy for patients with refractory chronic cough. Patient were followed for 6 months posttreatment and had durable improvement in cough severity index and urge‐to‐cough scores and no serious long term adverse effects.
Shumon I. Dhar, Eric Allen, Yun‐Lun Liu, Alexandra D. D'Oto, Rishi Suresh, Adrianna Shembel, Ted Mau   +6 more
wiley   +1 more source

Testing Times: A Structure/Agency Perspective on Becoming a Science Teacher in a Competitive, Exam‐Based Teacher Selection System

Science Education, EarlyView.
ABSTRACT While extensive research exists on science teacher shortages, less attention has been directed toward countries facing the opposite challenge: an oversupply of science teachers. This study examines the experiences of prospective science teachers in South Korea, where passing a high‐stakes, annual competitive examination is a prerequisite for ...
Wonyong Park, Heesoo Ha
wiley   +1 more source