In the West, the history of writing on art goes back to the classical antiquity but writing art history began with Giorgio Vasari’s 16th-century pioneering work on the artists’ biographies. In the present article, the authors follow the preliminary conditions that led to the birth and development of art history in the western world. The first important comparison is between the birth time of ar...

Regarding the design, pattern and color of Timurid carpets, although no sound and safe one of such period has been survived, there are so many paintings addressing the carpets that most probably have been produced in that time. These paintings are mostly accessible from various manuscripts that have been developed by Timurid princes and patrons. We can even reproduce a whole carpet by analyzing...

heteropoly acids (hpa) and their salts have advantages as catalysts which make them both economically and environmentally attractive, strong br?nsted acidity, exhibiting fast reversible multi-electron redox transformations under rather mild conditions, very high solubility in polar solvents, fairly high thermal stability in the solid states, and efficient oxidizing ability, so that they are imp...

Landscape ecology as a modern interdisciplinary science offers new concepts, theories, and methods for land evaluation and management. One main part of landscape ecology is describing patterns in the landscape and interpreting the ecological effects of these patterns on flora, fauna, flow of energy and materials. Landscape studies require methods to identify and quantify spatial patterns of lan...

One of the prosperous periods of Persian commercial carpet industry is the Safavid era especially the 10th and 11th centuries (A.H.). Governments’ attention to arts and artists and expanding the facilities on the one hand, and willingness of other artists such as illumination artists and Persian painters’ to beautiful designs for carpets, along with the progress of the dyeing indust...