BACKGROUND Epidemiological evaluations of the risk of silicosis in relation to exposure to crystalline silica have raised the question of whether different types of silica dust exposures vary with respect to their ability to cause silicosis. The aim of this study is to compare the risk of silicosis among cohorts of silica dust-exposed Chinese tin miners, tungsten miners, and pottery workers and...

china is one of the oldest and most important countries in the world that has had an important role in the process of pottery production. especially chinese potters have had an inimitable skill in production of porcelain wares. although impress of chinese pottery on iran returns to the early periods after islam but during timurid and safavid periods this impress is more greater especially in ma...

Linguistics and archaeology have been, and continue to be, entwined in the discourse on the early human history of the Pacific. It is commonly assumed, explicitly or otherwise, that the bearers of the Lapita culture were speakers of Proto-Oceanic, the ancestor of the Austronesian languages of most of the Pacific. In this discursive piece, the chronological data for the location and timing of th...

Firing is a crucial step in the production of pottery, as it irreversibly transforms clay into ceramic. Clay sintering and subsequent vitrification occur during firing, together with other transformations undergone by specific minerals rock inclusions according to their optical physical properties, including colour. Some these are visible thin-sections might be interpreted technological markers...