PURPOSE Surface color is one of the main criteria to obtain an ideal esthetic. Many factors such as the type of the material, surface specifications, number of firings, firing temperature and thickness of the porcelain are all important to provide an unchanged surface color in dental ceramics. The aim of this study was to evaluate the color changes in dental ceramics according to the material t...

A case of deliberate overdose of barium sulphide in a psychiatric setting is presented, with resulting flaccid paralysis, malignant arrhythmia, respiratory arrest and severe hypokalaemia, but ultimately with complete recovery. The degree of paralysis appears to be related directly to serum barium levels. The value of early haemodialysis, particularly with respiratory paralysis and hypokalaemia,...

This paper mainly focuses on the calibration problem for light intensity in LUSTER (Light under Shrub Thicket for Environmental Research). Data from sensor readings as well as corresponding ground truth gotten from LI-1400 are collected and stored. Three calibration schemes say SCS (Simple Calibration Scheme), TCS (Transformed Calibration Scheme), and SACS (Sophisticated and Accurate Calibratio...

A selection of lustres including 9 century AD polychrome and 10 century AD monochrome Abbasid lustres from Iraq, and 10 to 12 centuries AD Fatimid lustres from Egypt and Syria is studied in the present paper. The selection is based on previous studies that demonstrated that all of them contain metal silver nanoparticles and copper, which, when present, appears either as Cuþ or Cu2þ dissolved in...