Results 11 to 20 of about 189,256 (267)

Operation Rule of Steam Ejector and Influence Analysis of Ejection Position [PDF]

open access: yesE3S Web of Conferences, 2021
In order to analyze the operation rule of steam ejector used in sewage treatment field, this paper established the mathematical model of steam ejector, simulated the internal flow state, analyzed the influence rule of external parameters on the ...
Jinhui Zhao   +4 more
doaj   +1 more source

Multiworking Conditions Anomaly Detection of Mechanical System Based on Conditional Variational Auto-Encoder

open access: yesShock and Vibration, 2023
Existing anomaly detection models of mechanical systems often face challenges for the equipment under multiple working conditions: the learning model under a single working condition is challenging to adapt to new working conditions, and centralized ...
Wenping Lei   +4 more
doaj   +1 more source

Static Topology Optimization and Dynamic Characteristics Analysis of 6000T Compression-Shear Test Machine Frame

open access: yesAdvances in Civil Engineering, 2021
This work aims to achieve the 6000t compression-shear test machine frame design with the lightweight. The force condition of the compression-shear test machine frame under limited working conditions is first analyzed, and the static analysis of the ...
Genshang Wu   +7 more
doaj   +1 more source

Maximum-power quantum-mechanical Carnot engine [PDF]

open access: yesPhysical Review E, 2011
In their work [J. Phys. A: Math. Gen. 33, 4427 (2000)], Bender, Brody, and Meister have shown by employing a two-state model of a particle confined in the one-dimensional infinite potential well that it is possible to construct a quantum-mechanical analog of the Carnot engine through the changes of both the width of the well and the quantum state in a ...
openaire   +3 more sources

Effect of Battery Charging Rates for Electric Hybrid Vehicle on Fuel consumption and emissions behaviors in different road conditions: a comparative Study with Conventional Car [PDF]

open access: yesJournal of Engineering Research - Egypt, 2022
The transportation sector is a major source of worldwide carbon emissions and represents a significant contributor to air quality issues, particularly in metropolitan areas.
Medhat Elkelawy   +4 more
doaj   +1 more source

Intensification of heat dissipation from electrical elements to closed loop heat pipe [PDF]

open access: yesEPJ Web of Conferences, 2022
Article deals with the problem of heat transfer by condenser and evaporator for a closed loop heat pipe for cooling a hermetically sealed electrotechnical box.
Lenhard Richard   +4 more
doaj   +1 more source

Civil academic education of Helicopter Engineering in Poland

open access: yesAviation, 2004
Requirements of industry, research centres, and users necessitate the teaching of helicopter engineering at various levels and specialities, both in the civil and military sectors in Poland.
Wiesław Łucjanek
doaj   +1 more source

Contact and Infiltration Behavior of Al Melt and Al-B4C Composite

open access: yesAdvances in Materials Science and Engineering, 2022
In the present study, the authors used sessile drop method to simulate the contacting and infiltration behavior between Al melt and Al–B4C composite. In order to track the penetration distance of the metal melt infiltrate into the Al-B4C composite matrix
Wei Shi   +5 more
doaj   +1 more source

Modeling and Simulation of the Aerodynamic Noise of High-Speed Train’s Pantograph

open access: yesJournal of Engineering, 2022
This article aims to investigate the aerodynamic noise of the pantograph of the high-speed trains in different operating conditions. CFD technique was used to assess the acoustic noise of the pantograph components.
R. E. Shaltout   +2 more
doaj   +1 more source

Direct-Current Generator Based on Dynamic PN Junctions with the Designed Voltage Output

open access: yesiScience, 2019
Summary: The static PN junction is the foundation of integrated circuits. Herein, we pioneer a high current density generation by mechanically moving N-type semiconductor over P-type semiconductor, named as the dynamic PN junction.
Yanghua Lu   +5 more
doaj   +1 more source

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