Qualitative and quantitative studies of surface nucleation and growth were carried out with a glass having a composition close to Anorthite (CaO.Al2O3.2SiO2). Quasi-isometric hexagonal and elongated hexagonal crystals assumed to belong to the same phase, and a few rectangular crystals were observed after continuous or cumulative (intermittent) thermal treatments. The EDS analysis revealed that ...

The effects of low-concentration monorhamnolipid (monoRL) on the adsorption of Pseudomonas aeruginosa ATCC 9027 grown on glucose or hexadecane to glass beads with hydrophobic or hydrophilic surfaces was investigated using batch adsorption experiments. Results showed that adsorption isotherms of the cells on both types of glass beads fitted the Freundlich equation better than the Langmuir equati...

To explore the capability of basaltic glass to support the growth of chemosynthetic microorganisms, complementary in situ and in vitro colonization experiments were performed. Microbial colonizers containing synthetic tholeitic basaltic glasses, either enriched in reduced or oxidized iron, were deployed off-axis from the Mid Atlantic Ridge on surface sediments of the abyssal plain (35°N; 29°W)....

The purpose of this study was to evaluate the surface roughness of four conventional chemically cured glass ionomer cements (Fuji IX, Ketac Molar, Vidrion R and Vitromolar) commonly used in atraumatic restorative treatment (ART) immediately after material preparation. Twenty specimens of each glass ionomer cement were fabricated and surface roughness was measured after material setting. The spe...

Ge, B, P-doped silica glass films are widely used as optical waveguides because of their low losses and inherent compatibility with silica optical fibers. These films were etched by ICP !inductively coupled plasma" with chrome etch masks, which were patterned by reactive ion etching !RIE" using chlorine-based gases. In some cases, the etched surfaces of silica glass were very rough !root-mean s...

We demonstrate that a (3-aminopropyl)triethoxysilane-treated glass surface is superior to an untreated glass surface for coating with extracellular matrix (ECM) proteins when used as a cell culture substrate to observe cell physiology and behavior. We found that MDCK cells cultured on untreated glass coated with ECM removed the coated ECM protein and secreted different ECM proteins. In contrast...

The paper illustrates laser scanning methodology applied to the study of a gothic stained-glass window: the work can help understanding how glass objects are measured by laser scanner, conforming to more parameters. A glass window from King’s Chapel, Cambridge (UK) was modelled: a vertical ensemble, divided into more parts, made of glass, coloured during its realisation or coloured before being...

Surface modifications of glass-reinforced hydroxyapatite composites immersed in a simulated physiological solution were studied using X-ray photoelectron spectroscopy, scanning electron microscopy and energy dispersive X-ray spectroscopy. In the first stages of the apatite formation process, calcium and silicon ions were leached out from the surface of the composites. After 12 days of immersion...

Fracture surface characteristics of Te2As3Se5 (TAS) glass fibers aged in light and in dark have been investigated respectively for understanding physical aging effect on their fracture behavior. The properties including tensile strength ( ), surface flaw depth ( ), and mirror radii (rm) were measured by DY30 Adamel Lomarghy and SEM respectively. Shape factor extracted by fitting of vs confirms ...