Results 61 to 70 of about 73,080 (285)

Slab track systems

open access: yes, 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

Spiro‐Phenothiazine Hole‐Transporting Materials: Unlocking Stability and Scalability in Perovskite Solar Cells

open access: yesAdvanced Materials, EarlyView.
Fluorene‐functionalized spiro‐phenothiazine (PTZ‐Fl) exhibits strong Li+ affinity and thermal stability, enabling a PCE of 25.75% in small‐area cells and 22.07% in 25 cm2 modules. Under ISOS‐L3 conditions, PTZ‐Flbased devices retain over 80% efficiency after 1000 hours, demonstrating superior stability and scalability compared to spiro‐OMeTAD for next ...
Javier Urieta‐Mora   +17 more
wiley   +1 more source

The need and benefit of slab track: case of Lithuania

open access: yesGrađevinar, 2017
Slab track structures have been used in the world for several decades now. However, the ballasted track is still much more popular compared to slab track structures, which is primarily due to its lower price. This article reviews and analyses development
Inesa Gailienė, Alfredas Laurinavičius
doaj   +1 more source

Historical Development and Applications of Unconventional Structure of Railway Superstructure of the Railway Infrastructure of the Slovak Republic

open access: yesCivil and Environmental Engineering, 2014
In the first part, the paper deals with the origin and reasons to construct an unconventional type of the structure of railway superstructure, which is referred to as a slab track, it is shortly characterized by its development and the possible ...
Ižvolt Libor, Šmalo Michal
doaj   +1 more source

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

open access: yesSensors, 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

Polymorph‐Specific Electronic Transduction in WO3 during Molecular Sensing

open access: yesAdvanced Materials, EarlyView.
Metal‐oxide polymorphs with similar surface chemistry can nevertheless exhibit distinct sensing properties. In γ‐ and ε‐WO3, analyte adsorption appears comparable; yet, only ε‐WO3 induces a pronounced lattice electronic perturbation that accommodates charge in sub‐conduction band minimum states.
Matteo D'Andria   +6 more
wiley   +1 more source

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

open access: yesChengshi 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

A Review of Numerical Models for Slab-Asphalt Track Railways

open access: yesInfrastructures, 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   +3 more
doaj   +1 more source

Development of Intelligent Prefabs Using IoT Technology to Improve the Performance of Prefabricated Construction Projects [PDF]

open access: yes, 2019
Prefabrication (PC) projects have many advantages, such as cost and energy savings and waste reduction. However, some problems still exist that hamper the development of prefabrication projects. To improve PC project performance and advance innovation in
Liu, Zhansheng   +2 more
core   +1 more source

Science‐Towards‐Technology Breakthrough in CO2 Electroreduction: Multiphysics, Multiscale, and Artificial Intelligence Insights

open access: yesAdvanced Materials, EarlyView.
Electrochemical CO2RR is a key technology for converting CO2 into chemicals, but there remains a gap between “laboratory science” and “engineering practice” in current research. This review establishes a multi‐scale research framework, encompassing atomic‐level characterization, microenvironment regulation, external field‐assisted optimization, and AI ...
Ping Hong   +3 more
wiley   +1 more source

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