h. moghadas

Writing the Shahnameh during the Ilkhanian period was one of the ways that the Ilkhanian used to legitimize their government by communicating between the Ilkhanian and mythological kings, and they supported Shahnameh writers and poets as a way to gain legitimacy and accept the Iranian identity for themselves. created The content of historical-epic poems of this period mainly included the history of Iran after Islam. Ahmad Tabrizi worked on the order of his historical epic during the Mongol conquest and in the court of Ilkhanian. Tabrizi wrote the poem Shahshahnameh in imitation of Ferdowsi's Shahnameh. The stylistic analysis of this work can clarify new dimensions of the literary history of this period. The present article examines the three linguistic, literary and intellectual levels of half of this system (eight thousand verses).

Considering its theoretical nature, the current research is based on library studies and in a descriptive-analytical style, and the community under study is Shahshahnameh, by Mahshid Gohari Kakhki and Javad Rashki Aliabadi, published by Dr. Mahmoud Afshar Endowment Foundation.

The poet has largely avoided using foreign words and the number of Arabic, Turkish and Mongolian words is very few and insignificant. In the original word, industries have more puns and repetitions. Similes and metaphors also have a high frequency among expressive industries. Praise and war are also dominant themes in the Shahshahnameh.

Using linguistic and rhetorical tools, Ahmad Tabrizi has described the battles and bravery of Changiz Khan and his successors, and has cleverly and secretly expressed their bloodsheds and tyranny, and has praised Iranian warriors and mythological kings at every opportunity. Among them, Jalaluddin Khwarazmshah, who considered him to be rich and cultured and painted a painful picture of his death.

The invention of microfluidic devices has led to a dramatic change in engineering, medicine, and biomedicine. Microfluidic devices provide the conditions for cell culture in real body dimensions. In the present study, a microfluidic chip was fabricated that is capable of keeping cells alive under dynamic flow conditions. This microchip consists of a microchannel in which cells are cultured. Different amounts of shear stress are exerted to the cells by passing culture media. The results of the flow field simulation show that in the flow rate of 1 to 100 microliters per minute, the shear stress distribution is uniform. In this range of flow rate, shear stress varies from 0.005434 to 0.5432dyn/cm2, which is within the allowable shear stress for cells. Large shear stresses, such as a flow rate of 1000 microliters per minute, cause the cell wall to rupture, and eventually disintegration. The experimental results confirm that the growth and proliferation of cells vary for different amounts of growth factor as a chemical factor. The cells filled the microchannel for a growth factor of 15% on the fifth day of culture, while without growth factor, the microchannel was filled on the seventh day. The results indicate that this microchip can maintain cells alive for more than a week. Also, by adjusting the flow, different amounts of shear stress can be applied to the cells. Therefore, this microchip can perform various cellular tests to investigate the effect of shear stress on the cells.

Research on DNA is particularly important in the diagnosis, control, and treatment of many diseases, including cancer. Today, the use of digital droplet polymerase chain reaction (ddPCR) for different DNA tests has attracted much researchers’ attention. A large number of micron-sized droplets are required to perform ddPCR. In the present study, a ddPCR system was designed, fabricated, and evaluated using a microfluidic chip. The system comprises a microfluidic chip for droplet generation and a thermal cycling device needed for PCR. The droplet generation in the microchip was simulated in 3D. The simulation results were validated. The average error is about 5% in the radius of the droplets. The constructed thermal cycling device controls the chip temperature with a precision of ±1.5°C. The in-chip PCR process was successfully performed by applying 25 heat cycles. The fluorescent property was observed in most droplets that prove the thermal cycling device can provide the conditions for DNA proliferation in the laboratory. The images were processed, and different levels of fluorescent light were identified in the droplets. The coefficient of variation of the selected droplets is 2.5%, which gives a good accuracy compared to the acceptable amount for these types of systems (less than 8%). The results obtained from this fully native device can be used in many fields, including cancer detection, examination of malignant tissue, and evaluation of the success in tissue surgery.