Results 121 to 130 of about 9,721 (286)
Optimization Design of Pumping Unit Reversing Mechanism based on Output Swing Angle Analysis
Jixie chuandong, 2019 Aiming at the problem that the output angle of the elliptical gear planetary gear train reversing mechanism with small beam pumping unit is small and can not meet the long stroke demand, the influencing factors of the output swing angle of the mechanism ...
Liu Yongping Li Dawei Dong Changbin
doaj
Comparative efficiency and performance analysis of spur gear and non-circular (square) gear hydraulic pumps [PDF]
This study addresses the comparative energy consumption performance of hydraulic spur gear pumps, whose technical features and efficiency are well-known, and non-circular (square) gear pumps, whose technical features and efficiency have not been ...
Yazar, Mehmet
core +1 more source
Seismic analysis and design of tunnels within fault ground: A review
Deep Underground Science and Engineering, EarlyView.The research methods of seismic response of tunnels within fault ground, including field investigations, analytical solutions, physical experiments, and numerical simulations, and seismic countermeasures are discussed. The present study examines the shortcomings and limitations of the current research and design, and puts forward proposals for future ...
Xingda Wang +6 more
wiley +1 more source
EcoEnergy, EarlyView.As maritime transport electrifies, bidirectional charging (V2G) offers a dual‐purpose solution for energy resilience and economic viability. This work identifies key technological advancements and lifecycle challenges utilizing practical case studies to demonstrate how V2G systems can drive decarbonization and grid stability in the marine sector ...
Jonathan Bloor +3 more
wiley +1 more source
Jixie chuandong, 2012 Elliptic bevel gear is a noncircular bevel gear,whose spherical pitch curve of big end is an ellipse.According to the space mesh theory and the generation mechanism of involute gear tooth profile,a processing method of this kind of gear based on UG is ...
刘凯, 夏继强, 石侃
doaj
Environmental Policy and Governance, EarlyView.ABSTRACT Incoherence between national land use policies may weaken climate mitigation efforts by creating conditions under which agricultural and forestry production and GHG emissions are displaced across borders (leakage). Coherence depends on constellations and prioritization of national policy aims in land use (production) and climate (conservation).
Heiner von Lüpke +8 more
wiley +1 more source
The Distributive Consequences of Active Welfare Policies in Europe
European Policy Analysis, EarlyView.ABSTRACT This article examines the distributive consequences of active welfare policies in Europe by analysing tier‐specific investments in individualised employment services across four European welfare states: Denmark, Germany, the Netherlands and the United Kingdom.
Deborah Jackwerth‐Rice +1 more
wiley +1 more source
Jixie chuandong, 2007 The reasons causing to the different errors in the process of machining the non-circular spur gear according to the program segment are analyzed, the theoretical basis is provided to the machining accuracy of the non-circular spur gear.
严慧萍, 胡赤兵, 刘立美
doaj
Journal of Advanced Mechanical Design, Systems, and ManufacturingNon-circular face gear is a new type of gear with variable transmission ratio, which has the advantages of simple closure condition and good interchangeability. However, the lack of effective processing methods limits its application and development.
Dawei LIU +3 more
doaj +1 more source
Triboelectric nanogenerators for vehicle intelligent cockpits
FlexMat, EarlyView.Converting mechanical stimuli from drivers and vehicle motion into electrical signals, triboelectric nanogenerators provide promising interfaces toward passive, flexible, distributed and intelligent sensing for next‐generation automotive cockpits to support three core functional dimensions: driver state monitoring, vehicle state monitoring, and human ...
Haiqiu Tan +9 more
wiley +1 more source