The aim of this study was to characterize a conventional and a pressed porcelain for zirconia core as to biaxial flexural strength (BFS), apparent fracture toughness (FT) and microstructure composition, and to investigate the effect of glaze cooling rate on the BFS of the zirconia/porcelain bilayers. Monolayers of conventional porcelain Vita VM9 and pressed porcelain Vita PM9 (n=15) (12 mm diam...

Collards (Brassica oleracea var. acephala) are an important vegetable crucifer produced worldwide for human consumption, and one subject to severe injury by Lepidoptera. We have produced Bacillus thuringiensis (Bt)-transgenic collard lines that have the potential to be used either for direct control or as a ‘‘dead end’’ trap crop for Lepidoptera. To produce collard lines expressing Bt genes, a ...

Bodies and glazes of tiles from the Ilkhanid period found at UNESCO World Heritage site Takht-e Soleyman were studied to identify materials certain technical characteristics architectural ceramics as part a larger project establish different productions. In addition, ceramic vessels excavated analysed for comparison. µXRF, SEM/EDX, Raman spectroscopy used material investigations. Qualitative no...

Fatalities associated with severe weather, collected from newspapers and other documentary sources, were used to create a corresponding database for the 1961–2020 period Czech Republic. attributed floods, windstorms, convective storms, snow glaze ice, frost, fog, on one hand, vehicle accident fatalities connected rain, snow, inclement other, analysed separately two standard periods, 1961–1990 1...

Abstract The archaeometric investigation of 46 potsherds “Torre Alemanna type” pottery aimed to define a compositional reference group and understand the technological characteristics its production. Principal component analysis applied bulk chemical data (XRF) ceramic body showed strong homogeneity. Their comparison with local clays 6 fragments bricks sampled from kiln, on one hand, revealed u...

A representative selection of glazed ceramics recovered from medieval Islamic contexts excavated in the former Roman port Utica (North Tunisia) (23 99 pieces) has revealed new data about glaze technologies central Mediterranean. Stratified sequences pottery have established four main phases occupation which span mid-tenth to mid-eleventh centuries. Significant changes range wares are found Ziri...

STATEMENT OF PROBLEM Contemporary pressable and computer-aided design/manufacturing (CAD/CAM) ceramics exhibit good mechanical and esthetic properties. Their wear resistance compared with human enamel and traditional gold based alloys needs to be better investigated. PURPOSE The purpose of this in vitro study was to compare the 2-body wear resistance of human enamel, gold alloy, and 5 differe...

PURPOSE Polymer infiltrated ceramic network (PICN) materials, also called hybrid ceramics, are new materials in dental market. The manufacturer of the PICN material VITA Enamic suggests 3 different finishing procedures for this new material. In the present study, surface roughness and color differences caused from different finishing procedures of VITA Enamic were investigated. MATERIALS AND ...