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The study of the relationships between physical properties such as mass, volume and size of fruits is very important.In this research via CT scan, the relationship between physical properties of pears and storage times with bruise due to the loading force was investigated. Before loading and storing, 50 pears were examined using CT scan and 27 pears with zero bruise percentage were selected. Dimensions of pears (length, width, thickness) were measured, then properties such as the equivalent diameter, geometric mean diameter, spherical coefficient, surface area and aspect ratio of calculus were calculated, then selected pears were subjected to quasi-static loading with a thin edge pressure with three forces of 70, 100 and 130 N and 5, 10 and 15 d storage was used to investigate the effect of forces on pears. Then, after loading and storing, using the CT scan in each period of storage, the rate of pear bruise was calculated. The results of the experiments showed that there is an inverse relation between geometric diameter, arithmetic and equivalent diameter, spherical coefficient and aspect ratio with the bruise percentage. Also a direct and unreasonable relationship between the level of the surface area and the percentage of bruising. Overall, it was found that, the pears have a higher surface area, the higher the percentage of a bruise.

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Salt-man No.4 is the 4^th natural mummy discovered in the archeological excavation in Chehr-Abad salt mine located in the western Iranian city of Zanjan in 2005. The mummy was a complete body, fully clothed and with leather boots, a silver earring and a few gadgets such as a metallic knife, ceramic pots and an oil lamp. Radiocarbon dating revealed that the mummy dates back to Achaemenid era 330-550 B.C. Total coverage and clothing as well as anatomy of the mummy including its forearm, delicate fingers and lack of beard and mustache raised some questions about its gender. In the light of the physical status of the mummy at its burial time, the other question was the cause of its death. It was necessary to get information about physical conditions and the severity of the damage incurred to the mummy in order to take conservation and preservation measures. X-Ray radiography and CT scan revealed the gender of the mummy as being a 15 to 16-year-old boy who had died as a result of crushing caused by the collapse of heavy stones at the mine that buried him underneath. The sudden death was caused by multiple bone fractures (trauma) and heart compression and rupture as a result of crushing falling stones.