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The swelling process is often observed in many polymers of interest and is an important phenomenon for the understanding of many biopolymers. This important process, however, is known as poorly understood in the area in polymer science. One of the reasons is. that the conventional method of...
Nitrogen implantation and thermal nitridation processes are investigated to improve the wear resistance of titanium medical devices. Ion implantation uses 80 keV nitrogen ions and doses ranging between 1 × 10 17 and 5 × 10 17 /cm 2 to modify the surface layers up to 140 nm depth. Stable surface...
The adhesion of polymethylmetacrylate (PMMA) bone cement and low density polyethylene (LDPE) substrate by means of corona discharge treatment are presented. The surfaces were characterized by water contact angle goniometer, Fourier-transform infrared spectroscopy in the attenuated total...
Various pathologies, notably rheumatoid arthritis and/or trauma, are all known to cause severe pain and/or reduction of functional motion at the elbow joint. Implantation of a total arthroplasty, in such cases, has emerged as the first choice for management. For acceptable clinical performance,...
In order to improve the resistance of gamma-radiation sterilization of polypropylene (PP), the formulations of the additives such as antioxidants, crosslinking agent, and trans-stilbene oxide (StO) have been carried out. The irradiated PP and ethylene-propylene copolymer samples with control and...
The stresses in various sections of two-dimensional models of the elbow joint, without and with a prosthesis (the humeral component of a total elbow prosthesis), were obtained using the finite element analysis method. Three parameters were varied: type of applied load; method of fixation of the...
To investigate the feasibility of using self-setting hydroxyapatite cement as a carrier for marrow cells having a high osteogenic ability, a porous form of this cement was fabricated and combined with cultured marrow cells. Marrow cells were obtained from the femurs of a seven-week-old male...
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