Results 71 to 80 of about 1,826 (251)
Jixie chuandong, 2014 According to the processing method and meshing theory,the equation of the asymmetric face gear is deduced.Asymmetric and symmetric face gear drive model are established by Pro/E, the analysis is carried out through importing them to ABAQUS.The material ...
严宏志 +4 more
doaj
Applied SciencesThis study proposes an asymmetric pitch control technique for electric oil pumps with symmetric gear-type pumps in order to reduce noise and vibration. For vane pump noise reduction, mechanical asymmetric pitch arrangements of each vane are widely used ...
Chinchul Choi
doaj +1 more source
Study on Influence of Spalling Fault Evolution on Meshing Stiffness of Spur Gear
Jixie chuandong, 2021 As a key transmission mechanism in mechanical equipment，in the meshing transmission process of involute spur gears，under the influence of extreme working conditions，the tooth surface is easy to cause spalling defects，change the meshing rigidity of gear ...
Peng Dai +5 more
doaj
Corporate Social Responsibility and Environmental Management, EarlyView.ABSTRACT This study examines the role of capital expenditure in the relationship between financial performance and corporate reputation. Using moderation and mediation analyses based on multiple regressions with bootstrapping, we examined data from 121 airlines from 46 countries during 2007–2023.
Larissa M. Batrancea +2 more
wiley +1 more source
Chinese Journal of Mechanical Engineering, 2020 The current automatic scallion-transplanting machine is a complicated mechanism composed of two linkage mechanisms and two band carriers. It delivers seedlings inefficiently because of the movement limitations of the linkage mechanism.
Xiong Zhao +4 more
doaj +1 more source
Deep Underground Science and Engineering, EarlyView.An experimental device for physical simulation of hydraulic fracturing, comprising: a load‐bearing mechanism with multiple interconnected plates that collectively form an sample chamber; a load‐generating mechanisms, with multiple load‐generating mechanisms arranged within the experimental chamber.
Delei Shang +5 more
wiley +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
An analysis of fishing gear competition. Catalan fisheries as case studies
Scientia Marina, 2013 An asymmetric index was developed to measure the competition relationships among fishing fleets (or gears or métiers) in a multispecies fishery. This index can be used to measure the degree of dominance of each fleet and its level of independence from ...
Jordi Lleonart +2 more
doaj +1 more source
ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.This work reports one‐pot synthesized novel zwitterionic polydopamine‐silica (ZSiPDA) nanofillers for fabricating PES hybrid ultrafiltration membranes with enhanced hydrophilicity, permeability, and antifouling performance. The optimized membrane achieved over 91% humic acid removal and showed strong potential for municipal wastewater treatment.
Roqaya A. Ismail +5 more
wiley +1 more source
Ocean Governance and Marine Conservation: Institutional Work as a Lever for Ocean Sustainability
Environmental Policy and Governance, EarlyView.ABSTRACT Ocean governance presents one of the most complex environmental policy challenges of our time, requiring coordinated action across multiple scales, sectors and stakeholder groups. This paper applies institutional work theory to systematically examine how actors create, maintain and disrupt the governance arrangements underpinning ocean ...
Kedar Uttam +3 more
wiley +1 more source