Results 11 to 20 of about 144,627 (328)

Association of sarcopenia, pre-sarcopenia, and dynapenia with the onset and progression of locomotive syndrome in Japanese older adults: a cross-sectional study

Journal of Physiological Anthropology, 2023
Background Sarcopenia commonly occurs in older adults with motor disorders requiring long-term care, and the clinical features of sarcopenia are associated with locomotive syndrome. Dynapenia is the age-related loss of muscle strength.
Hungu Jung, Shigeharu Tanaka, Shusei Kataoka, R. Tanaka   +3 more
semanticscholar   +1 more source

Damage and Fatigue Life Evaluation for Laser Cladding Remanufactured Wheel

Advances in Materials Science and Engineering, 2022
Owing to high speeds and heavy loads, the wheels of trains and locomotives undergo gradual but significant damage. Conventionally, these damaged wheels are repaired using the rotatory repair method; however, this approach results in large amounts of ...
Liang Hua, Run-dong Zhou
doaj   +1 more source

Shape retrieval by using multi-scale angle-based representation and dynamic label propagation

IET Cyber-systems and Robotics, 2020
To improve the robustness and discrimination power of the triangle-area representation, a novel shape matching method based on multi-scale angle representation is proposed in this study.
Yanxia Yu, Danchen Zheng, Liang Zhao, Liang Zhao, Chuang Sun, Xiang Li, Yan Zhuang   +6 more
doaj   +1 more source

The effect of controllable train-tail devices on the longitudinal impulse of the combined trains under initial braking

Railway Engineering Science, 2023
The 20,000-ton combined train running has greatly promoted China’s heavy-haul railway transportation capability. The application of controllable train-tail devices could improve the braking wave of the train and braking synchronism, and alleviate ...
Yuan Zhang, Wei Wei, Boyang Liu, Jun Zhang, Jichao Zhu   +4 more
doaj   +1 more source

Stator ITSC Fault Diagnosis for EMU Induction Traction Motor Based on Goertzel Algorithm and Random Forest

Energies, 2023
The stator winding insulation system is the most critical and weakest part of the EMU’s (electric multiple unit’s) traction motor. The effective diagnosis for stator ITSC (inter-turn short-circuit) faults can prevent a fault from expanding into phase-to ...
Jie Ma, Yingxue Li, Liying Wang, Jisheng Hu, Hua Li, Jiyou Fei, Lin Li, Geng Zhao   +7 more
doaj   +1 more source

Problems, assumptions and solutions in locomotive design, traction and operational studies

Railway Engineering Science, 2022
Locomotive design is a highly complex task that requires the use of systems engineering that depends upon knowledge from a range of disciplines and is strongly oriented on how to design and manage complex systems that operate under a wide range of ...
M. Spiryagin, Qing Wu, O. Polach, J. Thorburn, W. Chua, V. Spiryagin, S. Stichel, Sundar Shrestha, E. Bernal, S. Ahmad, C. Cole, Tim Mcsweeney   +11 more
semanticscholar   +1 more source

Multiobjective Optimization and Weight Selection Method for Heavy Haul Trains Trajectory

IEEE Access, 2022
Energy-saving, punctuality and smoothness are difficult to achieve in the operation of heavy haul train. This paper proposes a multi-objective method for speed curve optimization.
Wang Li, Senhao Jiang, Miaoxin Jin
doaj   +1 more source

Research on Air Supply Volume and Temperature Control of Subway Trains Based on Passenger Capacity

Atmosphere, 2023
There is currently no way for subway air-conditioning systems to adjust to changes in passenger capacity in terms of air-supply volume and air-supply temperature.
Zhiyuan Liu, Yuan Long, Tianzhi Yang, Yingmou Zhu, Minghao Liu, Peng Li, Huimei Li   +6 more
doaj   +1 more source

Review of the Liquid Hydrogen Storage Tank and Insulation System for the High-Power Locomotive

Energies, 2022
Hydrogen has been attracting attention as a fuel in the transportation sector to achieve carbon neutrality. Hydrogen storage in liquid form is preferred in locomotives, ships, drones, and aircraft, because these require high power but have limited space.
Daehoon Kang, Sungho Yun, Bo-kyong Kim
semanticscholar   +1 more source

Study of the Aerodynamic Performance of Pantograph Bowhead with Serrated Lower Surface in the Thermal Management Systems of the High-Speed Train Electrical Devices

Energies, 2023
The thermal management problems of traction drive systems for high-speed trains are of great importance for the operation reliability of high-speed trains.
Bo Cai, Zhongkai Wu, Jiyou Fei, Chang Liu, Zhongzhen Guan   +4 more
doaj   +1 more source