Results 161 to 170 of about 73,080 (285)

Microbial mats in dinosaur ichnocoenoses

Sedimentology, EarlyView.
ABSTRACT Until now, the significance of microbial mats in preservation of dinosaur tracks and in reconstructing the palaeoenvironment in which dinosaurs roamed was rarely studied. Dinosaur tracks are commonly found close to ancient aquatic bodies where moist sediment had once allowed footstep registration.
Nora Noffke, Paul C. Murphey, Roger C. Buntin, Martin G. Lockley   +3 more
wiley   +1 more source

Research on multi-stage on-board detection algorithm of track defects of high-speed railway based on the influence mechanism of track defects. [PDF]

Sci Rep
Li J, Shi H, Qiu J, Shi J, Yu Z, Jiang Z.   +5 more
europepmc   +1 more source

Online Monitoring System for Track Slab Temperature [PDF]

Proceedings of the 2017 International Seminar on Artificial Intelligence, Networking and Information Technology (ANIT 2017), 2018
Wenbing Yang, Haomin Liu, Huizhen Ma, Wenfa Zhu   +3 more
openaire   +1 more source

Modelling the acoustic performance of slab tracks

, 2020
Transport is a major contributor to anthropogenic greenhouse gas emissions. Railway transport has a small footprint compared to other means of transport. This is one reason for the construction of new high-speed railway lines world-wide. These lines are often constructed using slab track technology, in which the traditional track configuration of ...
openaire   +1 more source

Study on effective frequency range of wheel-rail excitation for elevated high-speed railway. [PDF]

Sci Rep
Xing M, Zhu J, Zhao C, Sun Y.
europepmc   +1 more source

Toward Super‐Resolution Reconstruction of Diffusion–Relaxation MRI Using Slice Excitation With Random Overlap (SERO)

Magnetic Resonance in Medicine, Volume 95, Issue 6, Page 3213-3226, June 2026.
ABSTRACT Purpose Diffusion MRI probes tissue microstructure, but low SNR and limited resolution hinder detection of features and parameter estimates. We introduce slice excitation with random overlap (SERO), which enables variable repetition times (TRs) and diffusion weighting within a single shot.
Felix Mortensen, Jakub Jurek, Jens Sjölund, Geraline Vis, Ronnie Wirestam, Malwina Molendowska, Andrzej Materka, Filip Szczepankiewicz   +7 more
wiley   +1 more source

Effects of Performance Variations in Key Components of CRTS I Slab Ballastless Track on Structural Response Following Slab-Replacement Operations. [PDF]

Materials (Basel)
Wu W, Lu H, He Y, Xia H.
europepmc   +1 more source

Slab track systems for high-speed railways.

, 2012
In the last 40 years an increase in train speed and axle load around the world and other challenges in the conventional ballasted track system gave birth to ballastless railway track system. This study examines in depth the various slab track systems that are being used today.
openaire   +1 more source

Vertical‐Component Seismic Response and System Identification of a 52‐Story High‐Rise Building Using Earthquake Data

Earthquake Spectra, Volume 42, Issue 2, May 2026.
This study investigates the vertical dynamic response of a 52‐story high‐rise building in downtown Los Angeles using small‐magnitude earthquake data recorded by the Community Seismic Network. While seismic design traditionally emphasizes horizontal ground motion, vertical accelerations can have a significant impact on tall structures, leading to ...
Viviana Vela, Farid Ghahari, Monica D. Kohler, German A. Prieto, Ertugrul Taciroglu   +4 more
wiley   +1 more source

A simplified method for determining earthquake early warning thresholds in high speed railways. [PDF]

Sci Rep
Li H, Zhang H, Pan H.
europepmc   +1 more source