منابع مشابه
Glass-Like Heat Conduction in Materials With Disclination-Induced Topological Disorder
The recent progress in a study of various topologically disordered materials shows clearly an importance of rotational defects: disclinations, disclination dipoles, and disclination loops. Surprisingly, the phonon scattering due to strain fields caused by biaxial wedge disclination dipoles (BWDDs) turned out to be rather unusual (the mean free path lD ∼ q−1 at small q while lD → const with q in...
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Glass-like materials are nonequilibrium systems where the relaxation time may exceed reasonable time scales of observations. In the present paper a dynamic percolation model is introduced in order to explain the principal properties of glass-like materials near the dynamic transition. Here, contrary to conventional percolation problems, clusters are groups of particles dynamically correlated. I...
متن کاملGranite Based Glass-Ceramic Materials
In this study, production possibility of glass and glass-ceramic produced from granite was investigated. The composition of granite based glass bath mixture was 50 wt% granite, 25 wt% dolomite and 25 wt% sodium carbonate. Composition that was grounded and mixed in a ball mill for 2 h was melted at 1500 ◦C for 1 h. Glass samples were heat treated for crystallization to produce glass-ceramic mate...
متن کاملFluoride release of glass ionomer restorations after bleaching with two different bleaching materials
OBJECTIVE This study was designed to evaluate the effect of two bleaching agents on the fluoride release of three types of glass ionomer materials. MATERIALS AND METHODS A total of 90 specimens of the tested materials (Ketac Fil, Photac Fil and F2000) were prepared by a split Teflon ring with an internal diameter of 5 mm and thickness of 2 mm. The tested materials were applied and bleached ac...
متن کاملHaemocompatiblity of controlled release glass.
There are many medical applications which benefit from the use of soluble biomaterials, including the sustained release of drugs over a precise period of time, or temporary conduits for controlling nerve regrowth. We have manufactured a series of phosphate-based controlled release glasses (CRGs) in which the solubility could be controlled by varying the concentration of CaO and Na2O. Fibres of ...
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ژورنال
عنوان ژورنال: Journal of Physics: Conference Series
سال: 2009
ISSN: 1742-6588,1742-6596
DOI: 10.1088/1742-6596/150/4/042166