We report the results of spatial resolution and conversion efficiency measurements on new fluorochlorozirconate and lithium-borate glass-ceramics that are being researched for x-ray and thermal neutron imaging applications. The sensitivity of the fluorochlorozirconate glass-ceramics containing BaCl2:Eu nano-crystallites is up to 80 % of that found in BaFBr(1000ppm Eu), which is the material use...

We have developed a model that describes thermally induced birefringence in polycrystalline ceramics that are exposed to a magnetic field. Conditions under which traditional compensation techniques (for glass and single crystals) can be effective for ceramics have been found. It is shown that a ceramic is almost equivalent to a [111]-oriented crystal if the ratio of the rod length to the grain ...

Piezoelectric materials have coupled mechanical and electrical energies long been used in devices for actuators, sensors, energy harvesters, frequency filters, various additional applications. Piezoelectricity requires a non-centrosymmetric crystal structure is therefore confined to that possess periodic crystalline structure. Due the non-crystalline nature of glass, piezoelectricity fundamenta...

The clinical effect of feldspar ceramics and lithium disilicate reinforced glass was studied. 57 affected teeth with complete root canal treatment computer aided design/computer manufacturing (CAD/CAM) endocrown restoration were reviewed 24-36 months aftercompletion the restoration. These dimensions including anatomical morphology, proximal contact , color matching, edge integrity, coloring, se...

BACKGROUND The aim of the present study was to evaluate the degradation pattern of highly porous bioceramics as well as the bone formation in presence of bone morphogenetic protein 7 (BMP-7) in an ectopic site. METHODS Novel calcium phosphate ceramic cylinders sintered at 1,300°C with a total porosity of 92-94 vol%, 45 pores per inch, and sized 15 mm (Ø) × 5 mm were grafted on the musculus la...

OBJECTIVE This study evaluated the surface degradation effect of acidulated phosphate fluoride (APF) gel exposure on the glassy matrix ceramics as a function of time. MATERIAL AND METHODS Disc-shaped ceramic specimens (N = 120, 10/per ceramic material) were prepared in stainless steel molds (inner diameter: 5 mm, height: 2 mm) using 6 dental ceramics: 3 indicated for ceramic-fused-to-metal (V...

The efficacy of calcium phosphate (CaP) ceramics in healing large bone defects is, in general, not as high as that of autologous bone grafting. Recently, we reported that CaP ceramics with osteoinductive properties were as efficient in healing an ilium defect of a sheep as autologous bone graft was, which makes this subclass of CaP ceramics a powerful alternative for bone regeneration. Although...

Glass-ceramics based on the Eu/Dy-doped Sr2MgSi2O7 phosphor have been obtained from sintering and crystallization of glass powders. Electric gas furnaces were employed for melting. The doped parent glasses show red emission under excitation UV light whereas corresponding glass-ceramics blue emission. microstructure crystals responsible observed by scanning electron microscopy-cathodoluminescenc...

Efficient delivery of growth factors from carrier biomaterials depends critically on the release kinetics of the proteins that constitute the carrier. Immobilizing growth factors to calcium phosphate ceramics has been attempted by direct adsorption and usually resulted in a rapid and passive release of the superficially adherent proteins. The insufficient retention of growth factors limited the...

The drivers for increasing incineration of sewage sludge and the characteristics of the resulting incinerated sewage sludge ash (ISSA) are reviewed. It is estimated that approximately 1.7 milliontonnes of ISSA are produced annually world-wide and is likely to increase in the future. Although most ISSA is currently landfilled, various options have been investigated that allow recycling and benef...