نتایج جستجو برای: glass ion
تعداد نتایج: 274965 فیلتر نتایج به سال:
In the present study, a bioceramic-based composite with remarkable mechanical properties and in vitro apatite forming ability was synthesized by sintering compacts made up of mixtures of hydroxyapatite (HA) and sol-gel derived bioactive glass (64SiO2-26CaO-5MgO-5ZnO) (based on mole %). HA was synthesized through co-precipitation method. The stabilization temperature of the bioactive glass was s...
Introduction of the metallic nanoparticles (NPs) in the bulk glass received a large interest due to their versatile applications. The effect of silver NPs on optical properties of the Eu3+-doped zinc tellurite glasses is presented for the first time. Glass samples are prepared by melt-quenching technique. The surface plasmon absorption bands of silver NPs are recorded in the visible ...
Bioactive glasses are able to bond to bone through the formation of hydroxy-carbonate apatite in body fluids while strontium (Sr)-releasing bioactive glasses are of interest for patients suffering from osteoporosis, as Sr was shown to increase bone formation both in vitro and in vivo. A melt-derived glass series (SiO(2)-P(2)O(5)-CaO-Na(2)O) with 0-100% of calcium (Ca) replaced by Sr on a molar ...
For several years, the specific features of PIXE and PIGE have made them very attractive in the field of archaeometry. Among them, non-destructivity is one of the most important. The possibility of working under atmospheric pressure is also important because of the very different shapes and sizes of the artefacts concerned. However, these ion beam techniques suffer from the same disadvantage: t...
In retrospective radon measurements, the 22-y half life of (210)Pb is used as an advantage. (210)Pb is often considered to be relatively immobile in glass after alpha recoil implanted by (222)Rn progenies. The diffusion of (210)Pb could, however, lead to uncertain wrong retrospective radon exposure estimations if (210)Pb is mobile and can escape from glass, or lost as a result of cleaning-induc...
In monoionic complexes based on Co2+ ions, the second and third harmonics of magnetic susceptibility were found at temperatures 2–4 K, which exceed Néel temperature. The maxima are observed a frequency ~1 Hz, maximum first harmonic is in field 3.2 kOe. An analysis dependences temperature showed that nonlinearity arises as result formation spin glass state slightly higher than this state, there ...
-The process of solid-state film ion exchange (Ag +-Na +) in glass substrates for the fabrication of integrated, optical waveguides has been investigated as a solid-state electrochemical process. The ion exchange process is initiated by establishing a space-charge distribution in the more mobile charge carrier. The space charge establishes an intense electric field that drives oxygen to the sur...
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