PURPOSE To determine prevalence and associations of incomplete posterior vitreous detachment (PVD). METHODS The population-based cross-sectional Beijing Eye Study 2011 included 3468 individuals with a mean age of 64.6±9.8 years (range: 50-93 years). A detailed ophthalmic examination was performed including spectral-domain optical coherence tomography (SD-OCT). Incomplete PVD was differentiate...

The influence of coatings based on titanium carbide and zirconium carbide, obtained by PVD method, cutting tool wear resistance under conditions the longitudinal turning transport machines’ parts steel 45 stainless 12H18N10T inserts hard alloy grade T15K6 was investigated. It has been experimentally established that presence composition coating working surfaces in most cases contributes to a si...

Suspension plasma spraying (SPS) has become an interesting method for the production of thermal barrier coatings for gas turbine components. The development of the SPS process has led to structures with segmented vertical cracks or column-like structures that can imitate strain-tolerant air plasma spraying (APS) or electron beam physical vapor deposition (EB-PVD) coatings. Additionally, SPS coa...

Biofouling is one of the drawbacks restricting the industrial applications of membranes. In this study, different thicknesses of silver nanoparticles with proper adhesion were deposited on poly(vinylidenefluoride) (PVDF) and polyethersulfone (PES) surfaces by physical vapor deposition (PVD). The crystalline and structural properties of modified and pure membranes were investigated by carrying o...

This review considered various methods for depositing special modifying coatings on medical implants made of titanium alloys including techniques such as electrochemical deposition, sol–gel process, atmospheric plasma and PVD (magnetron sputtering vacuum arc deposition). The rationale is provided the use to improve performance efficiency implants. concept a functional multilayer coating designe...

OBJECTIVE To determine the role of hyperglycemia in prospective analyses of peripheral vascular disease (PVD) in type 2 diabetes, taking into account other potential risk factors. RESEARCH DESIGN AND METHODS Potential risk factors for the development of PVD were examined in 3,834 of 5,102 individuals enrolled in the U.K. Prospective Diabetes Study (UKPDS) without PVD at diagnosis of diabetes,...

Physical vapor deposition (PVD) is one of the most important techniques for coating fabrication. With traditional trial-and-error approach, it labor-intensive and challenging to determine optimal process parameters PVD coatings with best properties. A combination three-dimensional (3-D) quantitative phase–field simulation a hierarchical multi-objective optimization strategy was, therefore, deve...

Self-lubricating coatings can be used to increase the service life of machine parts which are subjected high mechanical loads. The present work is concerned with combination nitriding and a subsequent Ti-doped MoS2 coating. focus investigations on impact compound layer wear behavior coating since changes in surface topography due growth pore formation inside layers expected have an adhesion str...

Environmental barrier coatings (EBCs) were developed to reduce the susceptibility of SiC-based composites rapid volatilization and surface recession that occurs in presence water vapor. Extensive research development has been performed on EBCs, their corresponding failure mechanisms under different environmental conditions. However, one key mechanism, solid particle erosion (SPE), not thoroughl...