In parallel real-time database systems, concurrency control protocols must satisfy time constraints as well as the integrity constraints. The authors present a
A kind of new scintillating glass based on PbO-Bi2O3 heavy-metal oxides was prepared by doping a certain amount of SiO2, B2O3 and a little Ce3+ ions as fluoresc
X-ray diffraction (XRD) and differential scanning calorimetry (DSC) were employed to investigate the influence of Ni content on the crystallization of amorphous