[PDF] Top 20 "Cálculo del tiempo para alta de pacientes en' tratamientos con 131I"

... Keywords: Yttrium zinc lithium bismuth borate glasses, Energy interaction parameters, Optical properties, Judd-Ofelt analysis.. INTRODUCTION.[r] ... See full document

... 1060˚C by an electrical muffle furnace for 2 hours. After complete melting, the melts were quickly poured in to a preheated stainless steel mould and annealed at temperature of 350˚C for 2 h to remove thermal strains and ... See full document

... luminescence properties. Recently, doped glasses have shown a great potential in high-dose ...measurements. Spectroscopic and luminescence properties of ions already have been ... See full document

... Bismuth borate glass is a good candidate for designing the photonic system because of its valuable properties such as high refractive index, low melting temperature and low phonon ...ions ... See full document

... Glasses have distinct advantages over the crystal, viz. flexibility in the size and shape and excellent optical quality being isotropic. They can be made in long of few centimeters in diameters, special glass ... See full document

... : Glasses with the composition xNa2O-15ZnO- 20Bi2O3- (64−x) B2O3- 1EuO [where x= 0, 5, 10, 15, 20 mol %] were prepared by the conventional melt quenching ...physical properties are calculated using density, ... See full document

... This can be evaluated by plotting a graph between { (h)} n and h for direct band gap as shown in Fig. 2 and { (h)}1/n and h for indirect band gap as shown in Fig. 3 and Fig. 4 and their corresponding calculated ... See full document

... The properties of borate glasses modified with alkali oxide show a nonlinear behavior when alkali oxide was gradually increased. This departure from linearity is termed as boron anomaly phenomenon. ... See full document

... Table 2 shows the MFP and the HVL as a function of PbO content, at different -ray energies, for the lead borate glasses. As expected, the MFP decreases with increasing PbO content, which is the most ... See full document

... these glasses is determined by the oxygen bond strength in the glass forming ...studied glasses doped with rare earth oxides; we found that, the absorption spectra of the rare earth ions in ... See full document

... of borate compounds focuses on lithium borate. Lithium borate compounds are considered due to their low cost, near tissue equivalent absorption coefficient (Z eff ... See full document

... on lithium-borosulfophosphate glasses to examine the effect of dysprosium and europium ions upon their physical and spectroscopic ...optical properties of these glasses are found to be ... See full document

... to remove thermal strains and stresses. Every time fine powder of cerium oxide was used for polishing the samples. The glass samples so prepared were of good optical quality and were transparent. The chemical ... See full document

... [8] Zhao, G., Xi, H., Li, X., Wang, J. and Han., G. (2011). Influence of Sm2O3 on the crystallization and luminescence properties of boroaluminosilicate glasses. Material Research Bulletin. (44), 179-183. ... See full document

... H3BO3 doped with ...Au doped lithium borate glass samples were exposed to Co-60 gamma ray ...TL properties such as TL glow curve, linearity and sensitivity of the prepared glass were ... See full document

... elastic properties describe the mechanical behaviour of the materials, so the study of these properties is of fundamental importance in interpreting and understanding the nature of bonding in the solid ... See full document

... The change in geometrical configuration, co -ord ination number, cross-link density and dimensions of interstitia l space of glass decide the density and dimensions interstitial space of glass decide the density values; ... See full document

... However, borate glass has limited efficiency for infrared and upconversion visible emission due to its high phonon ...in borate glass, called ‘boron anomaly’, where BO ... See full document

... The glass preparation without glass network former like boron requires high temperature to soften it for applications of optical fiber. Several companies suggested that the release of carbon dioxide into the atmosphere ... See full document

... 1969). Borate crystals have been used as optical materials for second harmonic generation and ...borates doped with Eu 3+ , Pr 3+ and Er 3+ has been studied (Ambrosi et ...1996). Borate has been ... See full document