Showing 3 results for Khajehnasiri
Farshad Nadri, Ali Khavanin, Farahnaz Khajehnasiri, Masoud Ghanbari Kakavandi, Zohreh Mazaheri,
Volume 9, Issue 2 (6-2019)
Abstract
Introduction: Due to the high prevalence of noise and vibration in workplaces and focused of Previous studies on the auditory and musculoskeletal effects of these two harmful factors, The aim of this study was to determine the protective effect of cinnamon extract on sex hormones levels, body weight and testis weight of adult rats exposed to noise and vibration.
Material and Methods: 64 male Wistar rats were randomly assigned to eight groups of 8 each. Group 1; treated with distilled water (Control), group 2; treated with 75 mg kg-1 cinnamon extract, group 3; exposed to noise(100 dB), 8 h/day(23:00-7:00) and group 4; exposed to noise and treated with 75 mg kg-1 cinnamon extract, group 5; exposed to vibration(1 m/s2), 8 h/day (23:00-7:00), group 6; exposed to vibration and treated with 75 mg kg-1 cinnamon extract, group 7; exposed to noise and vibration, 8 h/day (23:00-7:00) and group 8; exposed to noised and vibration and treated with 75 mg kg-1 cinnamon extarct by gavage. Fifty days later, the rats were anesthetized, blood samples to determine the amount of sex hormones were collected, and the testis was removed for weight determination. Data was analyesd by SPSS.
Results: Noise stress decreased the level of three hormones (LH, FSH and Testosterone) while vibration decreased testosterone levels merely (P<0.05).Combined exposure to noise and vibration was able to create a significant difference with control group in testosterone and LH hormone levels (P<0.05). The three factors of noise, vibration and combine of them were able to create a significant difference with control group in final body weight (P<0.05). Cinnamon extract increased the level of sex hormones compared to control group (P<0.05).
Conclusion: Cinnamon extract (due to antioxidant properties) has a protective effect on sex hormone levels in rats exposed to noise and vibration. It’s suggested further studies to determine the mechanism of cinnamon extract (in different doses) in human and animal samples.
Vida Zaroushani, Farahnaz Khajehnasiri,
Volume 12, Issue 2 (6-2022)
Abstract
Farahnaz Khajehnasiri, Vida Zaroushani, Zahra Babaei Haris,
Volume 13, Issue 1 (3-2023)
Abstract
Introduction: This study quantitatively analyzed the fire risk using the Fire Risk Index Method: Multistorey Apartment Buildings (FRIM-MAB) method, considering the importance of fire safety in student dormitories as human gathering centers and previous limited studies.
Material and Methods: This descriptive-analytical study was conducted on 17 sections of the Qazvin University of Medical Sciences student dormitory in 2021. This study used the FRIM-MAB version 2.1. In this method, 17 parameters and their sub-parameters affecting the fire risk index were determined and weighted. Consequently, the studied dormitory was also inspected, the weighted degree of each parameter was computed, and the fire risk index for each section, which ranged between 1 and 5, was determined.
Results: The average fire risk index of the dormitory building at the time of the study was 2.37. The laundry room received the lowest risk index (1.69), while the computer site received the highest risk index (2.7). The results indicated that the most effective parameters causing fire risk were related to “compartmentation” (12 frequency items), “linings in the apartment” (4 frequency items), and “escape routes” (1 frequency item). These parameters contributed more than 42% to create the risk index for the dormitory’s most dangerous areas.
Conclusion: The FRIM-MAB method is a suitable quantitative and indexing fire risk assessment method for student dormitory buildings, and it is a quick, inexpensive, and effective screening and ranking tool. Periodically evaluating the dormitory’s fire risk and, if necessary, improving the environment is essential. In the present study, compartmentation, linings in the apartment, and escape routes were the most effective parameters in fire risk of the studied dormitory.
