AIM To evaluate the physical and mechanical properties of two cements with a similar chemical composition to mineral trioxide aggregate and to attempt to improve their properties by producing a composite material. METHODOLOGY Two cement types were used: a mixture of calcium sulpho-aluminate cement and Portland cement (CSA) and calcium fluoro-aluminate cement (CFA) in conjunction with an admix...

In the Nineteenth century the traditional sulphide based phosphor has improved greatly but they applied only in some commercial fields because the sulphide series phosphors are very poor stability. The long afterglow property and brightness is not good enough. That is the reason the researcher is trying to the research on the other phosphors. The researcher got the aluminate based phosphors at ...

We report methodological advances that enhance the phosphorescence efficiency of a blue-emitting calcium aluminate phosphor (CaAl2O4: Eu2+, Nd3+). The investigation of long-persistence blue-emitting phosphors is highly desirable due to their promising applications, such as white LEDs; however, the development of highly efficient blue-emitting phosphors is still challenging. Here, we have quanti...

This study quantifies NOx uptake efficiency and explores binding mechanisms in calcium aluminate cementitious (CAC) materials. Comparison between unmodified TiO2-modified CAC separates intrinsic from those related to photocatalysis. Attributed surface-related heterogeneous reactions, the occurs at nitrite-to-nitrate ratio of 1: 1.3 can be increased with surface area. The photocatalytic reaction...

Three aminoacids: proline, histidine, and lysine are used as organic additives in the hydrothermal synthesis of zeotype material AlPO 4 •1.5H 2 O-H3 (framework topology code APC). A detailed analysis factors controlling formation is performed. The role aminoacids process frameworks addressed based on comparisons crystal phase selection different synthetic recipes insights provided by FTIR gels ...

UNLABELLED A calcium aluminate-based endodontic material, EndoBinder, has been developed in order to reduce MTA negative characteristics, preserving its biological properties and clinical applications. OBJECTIVES The aim of this study was to evaluate the cytotoxicity, antimicrobial activity, pH, solubility and water sorption of EndoBinder and to compare them with those of white MTA (WMTA). ...

We show for the first time that it is possible to acquire high-resolution heteronuclear NMR correlation experiments in solid state between second-order-broadened half integer quadrupolar nuclei (i.e., 27Al and 17O) using the scalar J-coupling. The sensitivity of the experiment is dramatically improved at high fields (gain proportional to the fourth power of the principal field) with a combinati...