Results 21 to 30 of about 1,027,147 (317)

One-Step Electrochemical Synthesis and Assembly of MnO2/Graphene and its Application for Supercapacitors

International Journal of Electrochemical Science, 2020
We developed a facile, rapid, scalable, and environmentally friendly route to synchronously achieve ultrathin, high-quality graphene and MnO2 nanosheets, which spontaneously migrated and coassembled on a cathodic 3D Ni foam.
Xin Cao, Liguo Ma, Aiqin Tian, Hanlin Zhang, Maojun Zheng, Shaohua Liu, Qiang Li, Yuxiu You, Faze Wang, Li Ma, Wenzhong Shen   +10 more
doaj   +1 more source

Fault Analysis System for High Speed EMU Control Network Based on Fault Tree

Kongzhi Yu Xinxi Jishu, 2022
At present, fault analysis of high speed EMU is to classify and list all the fault causes according to the working principle, characteristics, functions and structure of the system.
XU Qing, LI Chuanyu
doaj   +3 more sources

Study on the Thermal Performance and Temperature Distribution of Ball Bearings in the Traction Motor of a High-Speed EMU

Applied Sciences, 2020
The transient thermal performance of rolling bearings affects the mechanical performance and system safety of traction motors. Most of the traditional empirical formulas used in temperature analysis have been simplified and cannot be completely applied ...
Yu Wang, Junci Cao, Q. Tong, Guoping An, Ruifang Liu, Yihuang Zhang, Hua Yan   +6 more
semanticscholar   +1 more source

Effects of Crash Dynamic Parameters of Urban Rail Transit Train on Climbing Behavior

Chengshi guidao jiaotong yanjiu
[Objective] In order to strengthen the passive safety design ability of urban rail transit trains during operation, it is necessary to study the effects of train crash dynamics parameters on climbing behavior.
Jiao XU, Qifan WU, Hongwei WANG, Shoune XIAO, Shang WANG   +4 more
doaj   +1 more source

Study on the Classification and Verification of Bogie Frame Loads of the High-speed EMU

Journal of Mechanical Engineering, 2021
Studying on the basic force system of the bogie frame of high-speed electric multiple unit(EMU) tallies with the mechanism and application of the complete frame load spectra, and further characterizes the damage of the bogie frame effectively and safely ...
Zhang Yayu, Sun Shouguang, W. Binjie, Yin Zhenkun, Li Qiuze, Wang Wenjing   +5 more
semanticscholar   +1 more source

Ontogenetic scaling patterns and functional anatomy of the pelvic limb musculature in emus (Dromaius novaehollandiae) [PDF]

, 2014
Emus (Dromaius novaehollandiae) are exclusively terrestrial, bipedal and cursorial ratites with some similar biomechanical characteristics to humans. Their growth rates are impressive, as their body mass increases eighty-fold from hatching to adulthood ...
Abourachid, Alexander, Alexander, Alexander, Allen, Allen, Bertram, Biewener, Biewener, Brown, Carrier, Carrier, Carrier, Close, Close, Cubo, Daley, Davies, Dial, Dial, Doube, Fuss, Gangl, Gatesy, Gatesy, Gaunt, Gillooly, Goetz, Goonewardene, Haughton, Hemmingsen, Hokkanen, Hutchinson, Hutchinson, Hutchinson, Ker, Ker, Kleiber, LaBarbera, Main, Main, Maloiy, McMahon, Mendez, Miller, Minnaar, Muir, Patak, Patak, Paxton, Paxton, Picasso, Picasso, Picasso, Powell, R Development Core Team, Regnault, Sacks, Schmidt-Nielsen, Shadwick, Smith, Smith, Smith, Smith, Taylor, Thorpe, Vanden Berge, Yoshikawa, Young, Zinoviev   +69 more
core   +10 more sources

Mathematical structure of unit systems [PDF]

, 2013
We investigate the mathematical structure of unit systems and the relations between them. Looking over the entire set of unit systems, we can find a mathematical structure that is called preorder (or quasi-order).
Bridgman P. W., Bureau International des Poids et Mesures, Gupta S. V., Jackson J. D., MacLane S., Masao Kitano, Porter A. W., Roman S., Schouten J. A., Sommerfeld A.   +9 more
core   +3 more sources

Impact of Ground Current of HVDC Earth Electrode on High-speed EMU

机车电传动, 2021
During the operation of HVDC system with the earth as the loop, the formed current  field in the ground has corrosion effect on the adjacent high-speed railway system.
Jie WU, Jun HUANG, Huazhi ZHANG, Wei SONG, Bo ZHANG   +4 more
doaj  

Fatigue Crack Mechanism Study on High-speed EMU Gearbox

Journal of Mechanical Engineering, 2017
G. Li
openaire   +2 more sources

Research on Rubber Spring Model of High-speed EMU Based on Non-hyperelastic Forces

, 2021
The research on the mechanical model of rubber spring is one of the hot spots in train dynamics. In order to accurately calculate the viscoelastic force of the rubber spring, especially the non-hyperelastic forces (NHEF) part, a NHEF model is proposed ...
Chuanbo Xu, M. Chi, Liangcheng Dai, Jiang Yiping, Chen Yongfa, Zhaotuan Guo   +5 more
semanticscholar   +1 more source