Raman micro/macro-spectroscopy allows for a non-destructive remote analysis: body and glaze, crystalline and amorphous phases can be identified, including the nanosized pigments colouring the glaze. Last generation instruments are portable which allows for examination in museum, on sites, etc. This paper gives an overview on the potential of Raman spectrometry technique to analyze ancient ceram...

with the development of the silk road in early islam, the pottery art of northern and north-eastern parts of iran were affected by imported chinese pottery. at that time, the most common way of glaze decoration in china was a method called “sancai” which found its way to iran through this business route and became a source of imitation for iranian artists. in this technique, known as glaze, the...

We present the first nanoscale investigation of silica glaze. High resolution transmission electron microscopy of a rock coating from the Ashikule Basin, Tibetan Plateau, reveals the presence of spheroids composed predominantly of silicon and oxygen with diameters ranging from 20 nm to 70 nm. While silica glaze spheroids co-exist with manganese-rich rock varnish in the same sample, the differen...

Aveh archaeological site, which has prepared the necessary background for the archaeological studiesafter having been identified and registered, is located in Saveh Plain, and it is one of the less-known sitesin the Iranian Central Plateau. The chronological sequence of this site extends from prehistoric periodstill Timurid time. It is worth mentioning that here, except for the Islamic settleme...

Assessing the quality of pearls involves the use of various tools and methods, which are mainly visual and often quite subjective. Pearls are normally classified by origin and are then graded by luster, nacre thickness, surface quality, size, color and shape. The aim of this study was to investigate the capacity of Artificial Neural Networks (ANNs) to classify and estimate the quality of 27 dif...

The purpose of this study was to evaluate the effect of different surface treatments of yttria-stabilized tetragonal zirconia (Y-TZP) on bond strength durability and marginal discrepancies. For adhesion testing, 144 specimens of VITA In-Ceram YZ ceramic for InLab were obtained (5.25×3.75×4.5 mm) and divided into six groups (n=24) according to the surface treatment: 1) Control (CRTL): untreated;...

This paper examines inherent tensions between the medical glaze and that of an extended glaze, and the ways in which they historically have been brought out as conflicts over inspection schemes in the school medical service. Following an outline of two contrasting models of inspection, the empirical anallysis compares the early formation and shaping of inspection schemes in Britain and Norway.

Surface smoothness of ceramic glazes is always an important characteristic of ceramic glazes as a point of surface engineering studies. Surface roughness affects chemical resistivity, glossiness and stainabiliy of glazes. In fact, less surface roughness improves cleanability of the surface by the least usage amount of detergents. In this investigation, surface topography of two common opaque gl...