14 research outputs found
機能獲得性STAT1変異を有する慢性皮膚粘膜カンジダ症に対する迅速診断法
内容の要旨 , 審査の要旨広島大学(Hiroshima University)博士(医学)Philosophy in Medical Sciencedoctora
An evaluation of hydroxyapatite-based filters for removal of heavy metal ions from aqueous solutions
Dissolution characteristics of extrusion freeformed hydroxyapatite-tricalcium phosphate scaffolds
The dissolution behaviour of calcium phosphate filaments made by extrusion freeforming for hard tissue scaffolds was measured. The solubility of filaments with different HA/?-TCP ratios sintered at temperatures from 1,100 to 1,300°C was measured under simulated physiological conditions (tris buffer solution: tris(hydroxyl) methyl–aminomethane–HCl), pH 7.4, 37°C). Calcium and phosphate concentrations were measured separately by inductively coupled plasma (ICP) atomic emission spectroscopy. Surface morphologies and composition before and after immersion were analyzed by SEM and EDS. The results clearly show that as the ?-TCP content increased, the dissolution increased. Higher sintering temperatures, with consequent closure of surface pores, resulted in lower dissolution. Examination of the surface suggested dissolution on preferred sites by pitting. <br/