Results 111 to 120 of about 657,080 (262)

Study on the Effects of CeO₂ on the Micro-Structure and Wear Resistance of CuCrZr Plasma Cladding Coatings

Lubricants
The electromagnetic railgun, a novel kinetic energy weapon, has found utility in military operations due to its enhanced safety features and superior precision. This study investigates the enhancement of wear resistance in CuCrZr rails through the plasma
Yang Wang, Hongjun Xiang, Genrong Cao, Zhiming Qiao, Qing’ao Lv, Xichao Yuan, Chunyan Liang, Qirui Wang   +7 more
doaj   +1 more source

Sustainability‐Oriented Collaborations in Green Energy Markets Formation: A Configurational Analysis of Alliance Management Capabilities and Relational View

Corporate Social Responsibility and Environmental Management, EarlyView.
ABSTRACT Sustainability‐oriented collaborations are inter‐organisational arrangements where the competencies of multiple companies are pooled together to tackle environmental challenges. These collaborations differ from traditional strategic alliances in that they tackle complex goals amidst greater uncertainties that extend beyond economic performance,
Vittorio Maria Garibbo, Eleonora Annunziata, Francesco Rizzi, Marco Frey   +3 more
wiley   +1 more source

“We, the Railroaders.” Configurations and Representations of Identity; National Railroads in Colombia (Ferrocarriles Nacionales de Colombia), Bogotá, 1958-1970

Universitas Humanística, 2008
This article presents and analyzes the identity construction process of a rail workers collective of rural origin that was linked to an industrial work environment by the middle of the 20th century in Bogotá.
Aída Patricia Rodríguez-Leuro
doaj  

Two-point wheel-rail contact investigation [PDF]

Transport Problems, 2011
This paper describes a wheel - rail contact for a case when one contact point is located on the wheel tread while the other is on the wheel flange. The locations of these points are determined for both wheels for given lateral displacement and yaw angle ...
Alexandr GOLUBENKO, Alexandr KOSTYUKEVICH, Ilya TSYGANOVSKIY, Vladimir NOZHENKO   +3 more
doaj  

Characterization of the permeability evolution of hard and soft rocks under hydro‐mechanical coupling conditions

Deep Underground Science and Engineering, EarlyView.
The permeability variation of rocks during complete stress–strain processes was investigated. A mathematical model describing the influence of rock damage on permeability was constructed. The permeability–stress relationship between soft rock and hard rock was proposed.
Zhen Huang, Jian Yu, Yun Wu, Cong Gong, Xiaozhao Li, Kui Zhao, Dickson Moyo   +6 more
wiley   +1 more source

Passenger Rail Statistics Following the Privatisation of British Rail. [PDF]

, 1997
In common with other major industries, the rail industry requires significant amounts of high quality information for successful operation. Information relating to the demand and supply of rail services is required to ensure that appropriate services ...
Nash, C.A, Preston, J.M., Wardman, M.R., Whelan, G.A.   +3 more
core  

Study on the failure mechanism of the shield excavation face in the sandy cobble stratum under different buried depths

Deep Underground Science and Engineering, EarlyView.
Abstract One of the significant challenges faced in shield tunnel construction is the risk of collapse resulting from abrupt changes in soil conditions in advance of the working face, particularly within the sandy cobble stratum. This study aims to effectively manage these sudden variations and to further investigate the failure mechanisms associated ...
Hua Jiang, Chongyang Liu, Ao Zhang, Xiaoyan Zhang, Yuhang Li   +4 more
wiley   +1 more source

Discussion of the technology and research in fuel injectors common rail system [PDF]

, 2017
Common rail is one of the most important components in a diesel and gasoline direct injection system. It features a high-pressure (100 bar) fuel rail feeding solenoid valves, as opposed to a low-pressure fuel pump feeding unit injectors. Third-generation
Ishak, Izuan Amin, Khalid, Amir, Maskan, Muhammad Haziq, Mohamad Yusuf, Mohamad Wafi, Sapit, Azwan, Zaman, Izzuddin   +5 more
core  

Temperature‐dependent shear behavior and constitutive model of the rock–concrete interface

Deep Underground Science and Engineering, EarlyView.
Shear tests were conducted to investigate the temperature‐dependent shear behavior of the rock–concrete interface, highlighting the interaction between the surrounding rock and the lining during tunnel fires. Under experimental conditions, concrete exhibited greater temperature sensitivity than rock, with the shear fracture surface transitioning from ...
Hongbin Chen, Yujing Jiang, Rui Pan, Bin Wang, Sunhao Zhang, Jinge Zhang, Xianzhuang Ma   +6 more
wiley   +1 more source

Elevator dynamic monitoring and early warning system based on machine learning algorithm

IET Networks, EarlyView., 2022
In order to monitor and warn the elevator dynamics, in this work, the machine learning algorithm is introduced, and the particle swarm algorithm is used to perfect the model. The model is optimised, and the experimental comparison shows that the optimisation of the model parameters can further improve the accuracy of the elevator load prediction. Then,
Shuai Zhang, Qiangguo Yin, Jinlong Wang
wiley   +1 more source