Results 81 to 90 of about 10,206 (280)

Assessing the Role of Longitudinal Variability of Vertical Track Stiffness in the Long-Term Deterioration

, 2016
The performance of the railway system in terms of dynamic loading is depending mainly on the track support conditions. Usually, the track stiffness is used as the main parameter to describe the support conditions and is defined as the ratio of the load ...
Grossoni, I., Andrade, A. R., Ramos Andrade, Antonio, Grossoni, Ilaria, Bezin, Y., Bezin, Yann   +5 more
core  

An Accessible Microfluidic Platform for the Generation of Polarized Brain Organoids

Advanced Materials Technologies, EarlyView.
This study presents an accessible double‐gradient microfluidic device that enables controlled morphogen delivery and spatially polarized differentiation in brain organoids. By integrating a pump‐free design and stable fabrication method, the platform generates dorsal–ventral neuronal asymmetry, offering a reproducible and versatile approach to model ...
Daniel Pérez‐Calixto, Manuel Alejandro Vazquez Valle, Mitzi Pérez‐Calixto, Cindy Peto‐Gutiérrez, Iván Velasco, Genaro Vázquez‐Victorio, Itzel Escobedo‐Avila   +6 more
wiley   +1 more source

Differential railway track settlement in a transition zone – Field measurements and numerical simulations [PDF]

, 2023
In a transition zone between two different railway track forms, there is a discontinuity in track structure leading to a gradient in track stiffness. Examples include transitions between different superstructures, e.g., slab track to ballasted track, and/
Nasrollahi, Kourosh
core  

Solid Particle‐Liquid Metal Mixtures for Robust High‐Current Interconnects in Stretchable Electronics and Soft Robotics

Advanced Materials Technologies, EarlyView.
Metallic microparticles dispersed in liquid metal interconnects mitigate electromigration‐induced failure by reconfiguring internal current density distributions. These fillers facilitate the growth of a robust, protective gallium oxide shell at elevated temperatures, shifting the failure threshold toward a thermal limit.
Ethan J. Krings, Calan Brant, Carson Emeigh, Donovan Vincent Jr., Ravi Tutika, Sangjin Ryu, Eric J. Markvicka   +6 more
wiley   +1 more source

Analysis on settlement factors of shield tunnel foundation for operating metro

Shuiwen dizhi gongcheng dizhi
The metro tunnel settlement would directly affect the normal train operation and the comfort of passengers; severe uneven settlement can easily cause tunnel structural diseases.
Ping XU, Yixin YANG, Zhihao ZHU
doaj   +1 more source

Upcycling Compact Discs Into Ultra‐Stable, Flexible, and Stretchable Nanoporous Gold Electrodes for Enhanced Biosensing Performance

Advanced Materials Technologies, EarlyView.
This article highlights the development of robust and high‐performance flexible and stretchable biosensors that maintain long‐term functionality and optimal electrical conductivity under mechanical deformation, utilizing sustainable and cost‐effective manufacturing principles.
Mousa H. Aldosari, Ahyeon Koh
wiley   +1 more source

PSO-SVM Model-based Settlement Dynamic Prediction Method for New Shield Tunnel Undercrossing Existing Operational Subway Lines

Chengshi guidao jiaotong yanjiu
ObjectiveWhen new shield tunnels cross under existing operational subway tunnels, settlement will be induced, further affecting the safety of the existing operational tunnels.
Shaokai LIU, Rongfeng ZHANG, Tao QIN, Dechun ZHOU, Yang XIANG, Xiu LIU, Deng PAN   +6 more
doaj   +1 more source

Fully Printed Electrocaloric Heat Pump

Advanced Materials Technologies, EarlyView.
A system based on a flexible printed PEDOT:PSS/P(VDF‐TrFE‐CFE) electrocaloric membrane. The membrane periodically alternates between the cold and hot sides following its electrocaloric cycle and successfully generates a temperature difference. The entire fabrication process is industrially scalable, cost‐effective, and based on widely accessible ...
Adrian Agreda, Florian Le Goupil, Guillaume Payrot, Sokha Khiev, Jean‐David Isasa, Wiljan Smaal, Guillaume Fleury, Georges Hadziioannou   +7 more
wiley   +1 more source

Centrifugal model tests on deformation characteristics of pile-net composite foundation under super-large loads

Yantu gongcheng xuebao
The CFG pile-net composite foundation is widely used to reinforce soft soil foundation. The geotechnical centrifugal model tests are carried out to study the deformation characteristics of the CFG pile-net composite foundation under super to large loads ...
ZHANG Junjie 1, GU Xingwen 2, 3, REN Guofeng 2, 3, ZHOU Chuner 4, WANG Nianxiang 2, 3
doaj   +1 more source

Effect of Differential Ballast Settlement on Dynamic Response of Vehicle–Track Coupled Systems

, 2018
An improved vehicle-track coupled dynamics model that takes into account the differential ballast settlement is presented in this paper. Central to this formulation is an iterative method for acquiring the mapping relationship between the ballast ...
Zaigang Chen, Yu Guo, Yu Sun, Wanming Zhai   +3 more
core   +1 more source