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Synthesis of Titanium Nano-particles and Studying Surface Resistance of Cyrus Tomb’s Carbonated Stones
Morteza Heidari, Ali Asghar Fahimifar, Mohammadzaman Kasaei,
Volume 3, Issue 1 (6-2020)
Abstract
In this study, cheap nanoparticles with the highest hybrid similarity were introduced to increase the surface resistance of ancient Pasargadae (Cyrus Tomb) rocks. As result, the kind of mineral of thin section of sample was detected as calcite and grainstone texture. The physical features of the sample indicated a high porosity. In order to achieve a high compatibility of the intended Nano materials, some powder of the sample was used as pre-material through Mechanical Grinder. After preparation of the powder, Nano material was prepared due to sol-gel method. Calcium Titanate blurs with the phase of Perovskite and Titanium dioxide with the phase of Anatase have been detected as XRD. These compounds were confirmed by FT-IR. The size of spherical and oval blurs prepared in the scale of Nano was confirmed by SEM. The existence of common elements such as Calcium, Titanium, Oxygen and Carbon was detected as EDX spectrometer. In this experience, Ethanol was used as solvent. In 4 hours, the gained Colloidal dissolved was added on the surface of the stone by the capillary specific. So as to module the resistance of the sample, the coated surface was examined under the abrasion test. Along with these experiments, all the levels for pre-material lime were done. The results show a relative improvement in the surface resistance of the sample rock. Meanwhile, there wasn’t any remarkable change in the case of the color of the sample.

From Bundarabad to New York: The Untold Story of a Historic Tombstone
Vahid Aghaie, Mohammad Hossein Dehghani , Zahra Danesh Heidari ,
Volume 3, Issue 2 (9-2020)
Abstract
In Gallery No. 455 of the Metropolitan Museum of Art, New York, USA, there is a historical tombstone, originally said to be from Yazd, Iran. The inscription on the stone dates to 759 AH. According to information provided by the museum on its website, the tombstone is attributed to a man named «Sheikh Mahmoud ibn Sada Muhammad,» who is described as the leader of a religious brotherhood. However, the study of the stone›s inscriptions, which, fortunately, are fully available
in both the original script and translation (Arabic and English) thanks to the museum, offers clues for further research into the true owner and the story behind it. Research into the gathered information, beginning with the inscriptions on the tombstone, reveals that the stone actually belongs to Sheikh Mahmoud ibn Taqi al-Din Dada Muhammad Yazdi, one of the great leaders of the Dada’iya Sufi order in Yazd, and a renowned Sufi of medieval Islamic Iran. His name and lineage have been mistakenly recorded, and the name of the Sufi order under his leadership, «Dada’iya,» was erroneously interpreted as a common colloquial term for «brother» in the local dialects of central Iran, particularly in cities like Isfahan and Yazd, where «Dadash» and «Dada» are used informally. This error led to his misidentification as the head of a religious brotherhood. According to descriptions from scholars based on local accounts, the tombstone—along with other gravestones of disciples and sheikhs of the Dada’iya order buried around Mahmoud Shah in the Bundarabad complex in Yazd—was taken abroad at an unknown time, likely in the late 19th to early 20th century, and later ended up in the Metropolitan Museum of Art, New York. This research note presents a description and narrative of this tombstone and the life of its owner, a story that begins in Bundarabad, Yazd, and continues in New York, USA.

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