Experiment was performed to draw a mercury adsorption stoichiometry of ceramic and activated carbon from aqueous phase in two parts first part dealt with the effect of three different pH 4, 7 and 10, whereas second part was designed to determine the effect of three temperatures 15, 25 and 35°C. SEM-EDS analysis of adsorbents clearly showed highly uneven and porous surface structure of activated...

Reflectance spectroscopy obtained from a thermally treated silicon nitride carbon based ceramic matrix composite is used to quantity the oxidation products SiO2 and SiN. The data collection is described in detail in order to point out the potential biasing present in the data processing. A probability distribution is imposed on select model parameters, and then non-parametrically estimated. A n...

Ge-SiO2 thin films highly photosensitive to excimer laser light were deposited by plasma enhanced chemical vapor deposition. In this paper, the following two studies are reported: (1) Direct writing of the channel waveguide was successfully confirmed only by irradiation with excimer laser through a Cr mask pattern, which was previously coated on the slab waveguide by sputtering method. Bragg gr...

A technique using the sudden change in the geometrical shape of metal line is considered for effective accumulation of atoms, and therefore fabrication of micro/nano materials utilizing electromigration. The experimental sample of Al metal line is formed on a TiN layer and covered with a SiO2 passivation layer. Thereafter, the sample is placed on a ceramic heater under atmospheric conditions, a...

Ceramic hollow spheres of MoS2 and MoO3 were obtained by sonochemical synthesis of MoS2 and MoO3 templated on silica nanoparticles (diameters 50-500 nm) followed by acid etching to remove the silica core. The resulting hollow materials have been characterized by elemental analysis, XPS, SEM, TEM, optical absorption, and hydrodesulfurization (HDS) studies. The TEM studies on the hollow ceramic m...

Particles are important additives for altering and enhancing the properties of polymers. When the particle size approaching the fundamental length scale of the material, new mechanical, optical, and electrical properties arise, which are not present in the conventional macroscopic counterpart. For example, the dielectric constant of a polymer fluid can be increased by addition of ceramic nanopa...

Glass–ceramic filler particles containing various amounts of fluoroapatite–mullite crystalline phases were synthesised using SiO2–Al2O3–P2O5–CaF2–CaO system as the base glass formulation. Different additives were used to promote crystallisation in this system. Composite samples were prepared by incorporating the silane treated glass–ceramic particles into the BisGMA/TEGDMA (60 : 40 mass ratio) ...

This study was carried out in order to determine the efficacy of CaO-P2O5-MgO-SiO2-CaF system glass ceramics, which are made as implant materials, for treatment of furcation lesions. Glass ceramic granules were implanted in artificial class II furcation bony defects in monkeys. As controls, non-implanted sites were preserved. Radiographic and various clinical examinations were performed before ...