BACKGROUND We studied which factor could predict aseptic loosening in ABG I hip prosthesis with hydroxyapatite coating. Aseptic loosening and periprosthetic osteolysis are believed to be caused, at least in part, by increased polyethylene (PE) wear rate via particle disease. Based on it, increased PE wear rate should be associated with aseptic loosening regardless of the type of implant. METH...

This paper demonstrates that a hand-powered egg beater can be modified to serve as a centrifuge for separating plasma from human whole blood. Immunoassays used to diagnose infectious diseases often require plasma from whole blood, and obtaining plasma typically requires electrically-powered centrifuges, which are not widely available in resource-limited settings. Human whole blood was loaded in...

BACKGROUND DATA Cervical arthroplasty offers theoretical advantages over traditional spinal fusion, including elimination of adjacent segment disease and elimination of the risk of pseudoarthrosis formation. Initial studies of cervical arthroplasty have shown promising results, however, the ideal design characteristics for disc replacement constructs have not been determined. The current study ...

The effect of chemical treatment at fiber–plastic interface and fiber loading level on creep property of bamboo fiber high-density polyethylene (BF/HDPE) composites was investigated. For single modifier systems, the use of maleic anhydride grafted polyethylene (PE-g-MA) as a coupling agent helped reduce the creep and achieved the optimum effect at the 5.7% loading level. The addition of either ...

Although cemented all polyethylene (PE) cups have been routinely used in total hip arthroplasty for decades, no computer-assisted method for measurement of radiographic wear has ever been specifically validated for these implants. Using a validated hip phantom model, AP plain hip radiographs were obtained consecutively for eight simulated wear positions. A version of Martell's Hip Analysis Suit...

We present results for step-strain experiments and the resulting damping functions of polyethylene blends of different structures, including solutions of linear, star and comb polymers. Remarkably, an entangled melt of combs exhibits a damping function close to that for entangled linear chains. Diluting the combs with fasterrelaxing material leads to a more nearly constant damping function. We ...

The synthesis and characterization of a series of dibenzhydryl-based α-diimine Ni(II) complexes bearing a range of electron-donating or -withdrawing groups are described. Polymerization with ethylene is investigated in detail, involving the activator effect, influence of polymerization conditions on catalyst activity, thermal stability, polymer molecular weight and melting point. All of these N...

The study described the preparation of composite material through dispersion carbon nanotubes (CNTs) decorated with silver nanoparticles (Ag NPs) in matrix blending natural rubber (NR) and polyethylene (PE), for use as an antibacterial agent. FESEM results indicated uniform defect-free surface synthesized composites. mechanical properties improved a 65% increase tensile strength, 38% elongation...

This is the first study which assessed microplastic pollution of sea salt products from Vietnam. The results obtained 9 iodate fine table and 4 raw samples collected different regions in Vietnam showed that were present 100% salts samples. mean concentration was 787±101 items/kg 340±26 for salts, respectively. For both salt, fibers predominant type microplastic, accounted more 60% total particl...

Abstract. This study aims to investigate the application of artificial intelligence (AI) methods in predicting resilient modulus soil mixtures with polyethylene (PE) bottles and polypropylene (PP). The AI used are neural network (ANN) classification regression random forest (CRRF), modeling was conducted using a database 160 datasets. also evaluated importance different input parameters on accu...