Results 51 to 60 of about 67,564 (151)

Vertebrate Footprints and Invertebrate Traces from the Cadronian(Late Eocene) of Trans-Pecos Texas [PDF]

, 1994
Contents: Abstract -- Introduction -- Methods -- Acknowledgments -- Systematic Paleontology -- Vertebrate Footprints -- Invertebrate Traces -- Conclusions -- Plates -- ReferencesCeratomorph remains found in Eocene and Oligocene deposits of Trans-Pecos ...
Langston Jr, Wann, S. Sarjeant, William Anthony   +1 more
core  

Railway slab vs ballasted track: A comparison of track geometry degradation

Construction and Building Materials, 2023
This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).
C. Charoenwong, D.P. Connolly, A. Colaço, P. Alves Costa, P.K. Woodward, A. Romero, P. Galvín   +6 more
openaire   +4 more sources

A Review of Numerical Models for Slab-Asphalt Track Railways

Infrastructures, 2022
Higher train speeds and heavier axle loads trigger elevated stresses and vibrations in the track, potentially increasing track deterioration rates and maintenance costs.
Mucahit Atalan, Luke J. Prendergast, Athina Grizi, Nick Thom   +3 more
doaj   +1 more source

Thermal Analysis and Prediction Methods for Temperature Distribution of Slab Track Using Meteorological Data

Sensors, 2022
The structural temperature distribution, especially temperature difference caused by solar radiation, has a great impact on the deformation and curvature of the concrete slab tracks of high-speed railways.
Qiangqiang Zhang, Gonglian Dai, Yu Tang
doaj   +1 more source

Slip inversion along inner fore-arc faults, eastern Tohoku, Japan [PDF]

, 2017
The kinematics of deformation in the overriding plate of convergent margins may vary across timescales ranging from a single seismic cycle to many millions of years.
Fisher, Donald M., Kirby, Eric, Oakley, David, Regalla, Christine, Taylor, Stephanie   +4 more
core   +2 more sources

Slab track systems

, 2011
Konstrukcije koloseka na čvrstoj podlozi primenjuju se vise od stotinu godina, najpre u metroima i tunelima, a danas kao standardno rešenje u urbanom okruženju i kao jedno od rešenja na prugama za velike brzine. U upotrebi su sledeći sistemi konstrukcija koloseka na čvrstoj podlozi: monolitni sistemi sa pragovima na betonskoj ploči sa diskretnim ...
openaire   +2 more sources

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

Analysis and Treatment of Floating Slab Track Bed Defects in Shanghai Rail Transit

Chengshi guidao jiaotong yanjiu
[Objective] Due to its excellent vibration and noise reduction performance, the floating slab track bed is widely used in urban rail transit. However, with the increasing service time, issues related to the deteriorating conditions of floating slab track
QU Feng
doaj   +1 more source

Two-Fluid MHD Simulations of Converging HI Flows in the Interstellar Medium. I: Methodology and Basic Results

, 2008
We develop an unconditionally stable numerical method for solving the coupling between two fluids (frictional forces/heatings, ionization, and recombination), and investigate the dynamical condensation process of thermally unstable gas that is provided ...
Draine B. T., Hennebelle P., Hennebelle P., Shu‐ichiro Inutsuka, Tsuyoshi Inoue, van Leer B.   +5 more
core   +1 more source

Vertical Vibration Characteristic Analysis of Subway Train Height-Adjustable Slab Ballastless Track in Ground Fissure Environment

Chengshi guidao jiaotong yanjiu
[Objective] Limited by engineering conditions such as the reserved connecting line on the hanging wall of the ground fissure, the existing ballastless track structure cannot meet the height adjustment function of subway track structure under large ground
KANG Xiaoli
doaj   +1 more source