Results 111 to 120 of about 649,209 (243)

Research on Stresses of Narrow Joints Caused by Construction Process of CRTSIISlab Track

MATEC Web of Conferences, 2018
A separate finite element model of 1/4 unit track slab of CRTS IIslab track was established for the analysis of the influence of construction process on stresses of narrow joints.
Zhu Yongjian
doaj   +1 more source

Evaluation of a Concrete Slab Track with Debonding at the Interface between Track Concrete Layer and Hydraulically Stabilized Base Course Using Multi-Channel Impact-Echo Testing. [PDF]

Sensors (Basel), 2021
Lee JW, Lee SJ, Kee SH.
europepmc   +1 more source

Vibration properties of slab track installed on a viaduct

, 2014
A model of the vibration behaviour of a discontinuous slab track installed on a viaduct is presented. It is represented by a three-layer Euler–Bernoulli beam model subjected to a harmonic load. Analytical equations are derived using the receptance method,
Zhu, Ying, Liu, Xueyi, Thompson, David J, Dai, Feng   +3 more
core   +1 more source

Methanol Decomposition on TiO2 Under Ambient Conditions: Cooperative Proton Transfer at Hydrated Interfaces

Angewandte Chemie International Edition, EarlyView.
Under ambient conditions, the TiO2 surface becomes hydrated by adsorbed hydroxyl groups (OH) and water molecules. This surface hydration promotes methanol decomposition, rendering the first deprotonation step nearly barrierless compared with ideal UHV conditions.
Milad Salarinasab, Julian Andreas Hochhaus, Jing Wang, Aimeric Ouvrard, Anas Akhtar, Michele Capra, Kristina Tschulik, Carsten Westphal, Mirko Cinchetti, Bo Wen, Li‐Min Liu, Zhe Wang, Ahmed Ghalgaoui   +12 more
wiley   +1 more source

Integral Bridge Abutment-to-Approach Slab Connection Final Report;TR-539/TR-530, June 2008 [PDF]

, 2008
The Iowa Department of Transportation has long recognized that approach slab pavements of integral abutment bridges are prone to settlement and cracking, which manifests as the “bump at the end of the bridge”.

core  

Cross-sectional temperature analysis method of slab track based on detailed evaluation of solar radiation and long-wave radiation

Nihon Kikai Gakkai ronbunshu
In some slab tracks in cold regions, freeze-thaw cycle causes frost damage to the slab track filling layer. To evaluate this phenomenon, we proposed a weakly coupled analysis method of heat balance calculation on the slab track surface and heat ...
Fumihiro URAKAWA, Tsutomu WATANABE, Takatada TAKAHASHI, Shota FUCHIGAMI   +3 more
doaj   +1 more source

Experimental study on the dynamic characteristics of slab track structure considering local defects and temperature gradient

Case Studies in Construction Materials
The unit slab track structure has been widely used in high-speed railways. Temperature gradients and local defects alter the interlayer condition of slab tracks, directly affecting the structure's dynamic performance.
Qiang Yi, Zeyu Wu, Zhiheng Li, Shuguo Wang, Lei Zhao   +4 more
doaj   +1 more source

High-power slab-based Tm:YLF laser for in-band pumping of Ho:YAG

, 2008
Several remote sensing applications require pulsed sources in the mid-infrared spectral regime with high average powers and good beam quality. Ho:YAG lasers have a number of attractive features for high power generation at 2.1 microns, either for direct ...
J. I. Mackenzie, D. P. Shepherd, W. A. Clarkson, Mackenzie, Jacob I., S. So, Shepherd, David P., Clarkson, William A., So, Sik   +7 more
core   +1 more source

Structural and Chemical Dynamics of Cu/NiO/Cu(100) Surfaces During CO2 Hydrogenation

Angewandte Chemie International Edition, EarlyView.
Dynamic segregation as a design principle for Cu–Ni catalysts. Operando LEEM/XPEEM tracks reduction, reshaping, and surface segregation processes taking place in Cu‐encapsulated NiO islands supported on Cu(100) during CO2 hydrogenation. ABSTRACT Understanding the dynamic restructuring of bimetallic catalysts under reaction conditions is key to ...
Mauricio J. Prieto, Hao Wan, Liviu C. Tănase, Lucas de Souza Caldas, Aarti Tiwari, Karsten Reuter, Hendrik H. Heenen, Vanessa J. Bukas, Thomas Schmidt, Beatriz Roldan Cuenya   +9 more
wiley   +1 more source

Surface Crack Detection in Precasted Slab Track in High-Speed Rail via Infrared Thermography. [PDF]

Materials (Basel), 2020
Li ZW, Liu XZ, Lu HY, He YL, Zhou YL.
europepmc   +1 more source