New Chromium-Calcium Titanate Red Ceramic Pigment

Calcium titanate based ceramic resonators for high field magnetic resonance

Introduction: At high magnetic fields radiation losses, wavelength effects, self-resonance and decreased Q of typical components all contribute to increased losses in conventional RF coil designs. High permittivity ceramic dielectric resonators create strong uniform magnetic fields in a compact structure at high frequencies, are extensively used in radiocommunications applications, and can pote...

Calcium Hydroxyapatite Ceramic

Porous blocks of calcium hydroxyapatite ceramic were evaluated as delivery systems for the sustained release of antibiotics. We tested gentamicin sulphate, cefoperazone sodium, and fiomoxef sodium in powder form placed in a cylindrical cavity in calcium hydroxyapatite blocks, using in vitro studies of elution and in vivo studies in rats. Gentamicin sulphate gave a maximum concentration within t...

A New Red Dipyrromethene Pigment from Candida boidinii

Candida boidinii, Growth on Ethanol, Presence M onofluoracetate, Red Dipyrromethene Pigment, Structure Elucidation The yeast Candida boidinii ATCC 32195 produces a cell-bound red pigment during growth on 1% ethanol in the presence o f 0.05% monofluoracetate. Its isolation and purification are described. The structure was elucidated by chemical degradation and physical methods, mainly mass and n...

Thickness profiles through fatigued bulk ceramic lead zirconate titanate

[Mechanical properties of metal-ceramic systems from nickel-chromium and cobalt-chromium alloys].

BACKGROUND/AIM Metal-ceramic bond strength and alloys' elastic modulus clearly determine the potential of alloy application, because the ceramic integrity during mastication depends on these two characteristics. The aim of this study was to evaluate metal-ceramic bond strenght and elastic modulus of cobalt-chromium alloys in making porcelain-fused-to-metal restorations, regarding the applicatio...