Results 41 to 50 of about 18,599 (263)

Topology‐Orchestrated Multi‐physical Energy Control in Turtle Shell‐Inspired Metamaterials

Advanced Materials, EarlyView.
A turtle shell‐inspired lattice metamaterial efficiently manages acoustic, fluid‐thermal, and mechanical energy flows simultaneously. The unique hybrid‐coupling architecture achieves superior sound attenuation via pore‐cavity resonance, facilitates effective airflow transport, and maximizes mechanical energy absorption through multistage cell ...
Xi Wang, Shiyi Wang, Bingzhi Chen, Xinwei Li   +3 more
wiley   +1 more source

Development of a scaled‐down single‐viaduct model for comprehensive rail potential monitoring and stray current analysis

IET Energy Systems Integration
This research investigates the intricate relationship between load variations, environmental conditions, and the resultant stray current generation within DC railway systems.
Tawat Chuchit, Tosaphol Ratniyomchai, Thanatchai Kulworawanichpong, Chaiyut Sumpavakup   +3 more
doaj   +1 more source

A Universal van der Waals Tunneling Injector for Monolayer CMOS

Advanced Materials, EarlyView.
A universal van der Waals injector unlocks polarity‐flexible tunneling contacts for monolayer CMOS. SnSe2, an intrinsically degenerate 2D semiconductor, establishes polarity‐specific band alignments with both WSe2 and MoS2 channels, enabling steep switching, high on/off ratios, and a unified route to low‐power 2D logic.
Hanbin Cho, Jing Huang, Seonguk Yang, Subin Im, Sangwoo Park, Jeongin Yeo, Sungyeon Kim, Gilhwan Do, Wenxuan Zhu, Soobeom Shin, Jongwon Lee, Yongjoon Shin, Do‐Sun Lee, Hu Young Jeong, Tae‐Eon Park, Jun Kang, Kyungmin Ko, Joonki Suh   +17 more
wiley   +1 more source

Insulation Protection Tests and Safeguard Measures under Equipotential Connection of Platform Door and Steel Rails

Chengshi guidao jiaotong yanjiu
Objective Under the equipotential connection method between platform door system and steel rail, once the ground insulation of the platform door system weakens, the discharge is prone to occur.
ZHANG Mingrui, CAO Tingsong, LIU Jinye, LIU Yue   +3 more
doaj   +1 more source

Using contact potential measurements to analyse future intercity links made possible by the Tours–Bordeaux High-Speed Rail line

Belgeo, 2017
New high-speed rail transport infrastructures produce profound time-space changes that make new activities possible. Our aim is to measure the impact of such changes on potential business or leisure travel between cities.We develop a contact potential ...
Alain L’Hostis, Liu Liu, Thomas Leysens   +2 more
doaj   +1 more source

A Proof‐of‐Concept Assessment of a Novel Wearable Eyelid Muscle Device: A Pre‐Clinical Animal Cadaver Study for Eyelid Closure Restoration

Advanced Robotics Research, EarlyView.
This article introduces a soft wearable eyelid sling device incorporating a hydraulic soft artificial muscle (SAM) for achieving complete closure of an eyelid. The SAM is driven by a cam mechanism that provides a displacement profile closely matched with those of a healthy eyelid.
Patrick Pruscino, Phuoc Thien Phan, James Davies, Bibhu Sharma, Tianruo Guo, Chi Cong Nguyen, Nigel H. Lovell, Thanh Nho Do   +7 more
wiley   +1 more source

A two-level approach to the problem of rail freight car fleet composition

Transport, 2010
One of the main objectives for a rail company is to minimize the size of rail freight car fleet in order to reduce operating costs. The problem of rail freight car fleet composition is aimed at determining an optimal structure and size of freight car ...
N. Bojovic, B. Boskovic, M. Milenkovic, A. Sunjic   +3 more
doaj   +3 more sources

Mechanism of rail potential imbalance in long tunnel based on GA and analysis of improvement and optimization measures

Results in Engineering
As the quick advancement of urban rail transit, the power supply safety is gradually receiving attention. In the direct-current traction power supply system, the abnormal increase in rail potential is very significant, seriously affecting the regular ...
Changyu Pan
doaj   +1 more source

Assessment of the Perspective Ratios in Rail Crossings as an Important Evaluation Factor of Rail Crossings

Applied Sciences, 2022
It is currently necessary to solve several bottlenecks in railway infrastructure. This is important because it is needed to improve railway infrastructure to be faster, safer and of high quality.
Milan Dedík, Jaroslav Mašek, Jozef Gašparík, Vladimír Ľupták   +3 more
doaj   +1 more source

Collision‐Resilient Winged Drones Enabled by Tensegrity Structures

Advanced Robotics Research, EarlyView.
Based on structures of birds such as the woodpeck, this article presents the collision‐resilient aerial robot, SWIFT. SWIFT leverages tensegrity structures in the fuselage and wings which allow it to undergo large deformations in a crash, without sustaining damage. Experiments show that SWIFT can reduce impact forces by 70% over conventional structures.
Omar Aloui, Raphael Zufferey, William Stewart, Mohammad Askari, Simon Jeger, Dario Floreano   +5 more
wiley   +1 more source