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A simple two-step chemical treatment i.e. etching with HCl and H 2 SO 4 followed by immersion in boiling dilute NaOH solution, has been developed by our group to prepare bioactive microporous titanium surfaces allowing fast deposition of a calcium phosphate layer (CPL) from an in vitro...
The synthesis of poly(lactic acid) through polycondensation of the lactic acid monomer gave weight average molecular weights ( M w ) lower than 1.6 × 10 4 , whereas ring-opening polymerization of lactides in bulk at 130 °C for 72 h using stannous octoate as catalyst in the concentration range...
Evaluation of the host response to implanted materials requires systematic, objective investigations of responses at both the cellular and molecular levels. This article explains the basis behind two technologies: antibody and molecular techniques, which will give valuable information when...
Ar + ion beam enhanced deposition (IBED) was used to produce a hydroxyapatite (HA) film on polished titanium substrates. In this study, the HA ceramic target was sputtered by an argon-ion beam with an energy of 1.5 KeV, and the sputtered film was intermittently bombarded by energetic argon-ions...
A very strong improvement of the cell adhesion, spreading and proliferation was observed for ion beam irradiated surfaces of polyethersulphones and polyurethane. The improvement shows a characteristic ion fluence-dependence with a threshold around 1 × 10 15 ions cm −2 . We have compared this...
A biodegradable polymer, poly( d,l -lactide- co -glycolide) RESOMER® RG756, was modified by surface immobilization of recombinant hirudin (r-Hir) with glutaraldehyde as coupling reagent to improve the blood contacting properties of the polymer. The activity of immobilized hirudin on the polymer...
Glass-ceramic A-W(Al), which was prepared by heat treatment of a MgOCaOSiO 2 P 2 O 5 Al 2 O 3 glass to precipitate crystalline apatite and wollastonite, shows a higher mechanical strength than glass-ceramic A-W, which was prepared by heat treatment of a MgOCaOSiO 2 P 2 O 5...
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