Results 81 to 90 of about 9,576 (292)

The influence of variation in track level and support system stiffness over longer lengths of track for track performance and vehicle track interaction

, 2019
Differential settlement leading to the development of track geometry irregularity drives the need for maintenance of ballasted railway tracks. Predicting the development of differential settlement requires an understanding of how train loading and the ...
Le Pen, Louis, Milne, David, Powrie, William, Harkness, John   +3 more
core   +1 more source

Super‐Resolution Ultrasound Based Cell Tracking With Polymeric Nanobubbles

Advanced Materials, EarlyView.
This study presents a super‐resolution ultrasound platform for tracking cells in vivo. Biocompatible polymeric nanobubbles are used as highly echogenic intracellular labels. Following the injection of cells and microbubbles, ultrasound localization microscopy (ULM) can dynamically match the microvascular architecture and individual cell trajectories ...
Junlin Chen, Xiaoyu Wang, Jilin Fan, Bi Wang, Hanghang Fang, Yurui Wang, Hao Cui, Mohammad Roufarshbaf, Ekaterina Savina, Alexandra Valeske, Quim Peña, Yang Shi, Andreas Herrmann, Twan Lammers, Mathias Hornef, Roman Barmin, Thomas Lisson, Georg Schmitz, Anne Rix, Fabian Kiessling   +19 more
wiley   +1 more source

Development of a new design methodology for slab track systems

Journal of Engineering and Applied Science
Owing to the rapid increase in the demands of train speed and axle loads, the slab track has been introduced to replace the ballast in the classical ballasted track with reinforced concrete slab or asphalt-bearing layer to improve the track stability ...
Mohamed Hafez Aly, Islam Mahmoud Abou Elnaga, Ahmed Abdul Hay Soliman, Muhammad Ahmad Diab   +3 more
doaj   +1 more source

Research on Impact Coefficient of Railroad Large Span Steel Truss Arch Bridge Based on Vehicle–Bridge Coupling

Applied Sciences
This study investigated the impact coefficient of a large-span steel truss arch railroad bridge under moving train loads, with the Nanning Three Banks Yongjiang Special Bridge serving as the case study.
Yipu Peng, Boen Jiang, Li Chen, Zhiyuan Tang, Zichao Li, Jian Li   +5 more
doaj   +1 more source

Effects of Landfall Location and Approach Angle of an Idealized Tropical Cyclone over a Long Mountain Range

Frontiers in Earth Science, 2016
Effects of landfall location and approach angle on track deflection associated with a tropical cyclone (TC) passing over an idealized and Central Appalachian Mountain is investigated by a series of idealized numerical experiments.
Liping eLiu, Yuh-Lang eLin, Shu-Hua eChen   +2 more
doaj   +1 more source

High‐Sensitivity Terahertz Gas Sensing Enabled by Undercut Metal‐Dielectric‐Metal Metamaterial

Advanced Materials Interfaces, EarlyView.
A terahertz (THz) metamaterial gas sensor is demonstrated using a metal–dielectric–metal (MDM) absorber with an undercut dielectric layer, which enlarges the gas‐replaced volume and strengthens refractive‐index perturbation of the resonant mode. A reflection dip at 0.766 THz is observed, and acetone–nitrogen tests yield concentration‐dependent shifts ...
Naoki Inomata, Yuki Sakai, Yoshiaki Kanamori   +2 more
wiley   +1 more source

MODELING OF DEVELOPMENT VERTICAL DEFORMATION OF RAILWAY TRACK

Nauka ta progres transportu, 2016
Purpose. State of railway track must meet the conditions of safety, comfort and smooth ride. The presence of irregularities deteriorates the dynamics of interaction of track and rolling stock, causes speed limiting, creates the possibility of movement ...
D. M. Kurhan
doaj   +1 more source

Low-Temperature thermochronological data (AHe/AFT) for cooling dynamic investigation of the Abancay Deflection region (Southern Peru), 2017-2019

, 2021
Located at the northern tip of the Altiplano, the Abancay Deflection marks abruptly the latitudinal segmentation of the Central Andes spreading over the Altiplano to the south and the Eastern Cordillera northward.
Gérard, Benjamin Gilles, Bernet, Matthias, Audin, Laurence, Valla, Pierre, Gautheron, Cecile, Robert, Xavier   +5 more
core   +1 more source

End‐to‐End Sensing Systems for Breast Cancer: From Wearables for Early Detection to Lab‐Based Diagnosis Chips

Advanced Materials Technologies, EarlyView.
This review explores advances in wearable and lab‐on‐chip technologies for breast cancer detection. Covering tactile, thermal, ultrasound, microwave, electrical impedance tomography, electrochemical, microelectromechanical, and optical systems, it highlights innovations in flexible electronics, nanomaterials, and machine learning.
Neshika Wijewardhane, Lyn I. Jones, Richard M. Martin, Helen Winter, Faezeh Arab Hassani   +4 more
wiley   +1 more source

Influence of Ballast and Sub-Ballast Thickness on Structural Behavior of Heavy-Haul Railway Platform Determined by Using Finite Element Modeling

Construction Materials
This study investigates the influence of ballast and sub-ballast thicknesses on the structural behavior of a heavy-haul railway platform by using finite element modeling with SysTrain software (v.
Magdiel Acaz de Oliveira Teixeira, William Wilson dos Santos, Lisley Madeira Coelho, Lidiane Hellen dos Santos Santana, Fábio Grisolia de Ávila, Sergio Neves Monteiro, Antônio Carlos Rodrigues Guimarães   +6 more
doaj   +1 more source