As a special type of aviation hydraulic Thymus pipe joint, a beam seal comprises two annular sealing areas.This paper presented a leakage model for an annular sealing area based on a developed three-dimensional percolation grid model and the porous medium theory.Both average contact pressure and true contact width of the beam seal were simulated us

The spread of micro- (MPs) and nanoplastics (NPs) in the environment has become a significant environmental concern, necessitating effective removal strategies.In this comprehensive scientific review, we examine the use of magnetic nanoparticles (MNPs) as a promising technology for the removal of MPs and NPs from water.We first describe the issues

The environmental concern has become central for many bus companies, but estimating pollutant emissions can be difficult for many reasons (little knowledge or underestimation of the problem; scarce know-how; reluctance to acknowledge the pollutant potential of bus fleets Chipset Cooling Fan because either of small size or composed by too many old-g

Fleet-level selective dispatch under imperfect maintenance oriented to mission reliability is a practical, multi-level maintenance strategy decision problem that becomes highly difficult since the number of potential maintenance strategies dramatically increases.In this paper, the fleet-level selective imperfect maintenance model is established, an

Classifying Remote Sensing (RS) imagery for reliable and accurate Land Use/Land Cover (LU/LC) change information still remains a challenge in heterogeneous and arid landscapes due to spectrally similar LU/LC features.The aim of the present study is to extract reliable LU/LC information using ancillary data and change detection between 2001 and 2011