Showing 5 results for Rajabi
Mehdi Jahangiri, Fatemeh Rajabi, Sabereh Doosti, Mohammad Ghorbani, Saeedeh Jafari,
Volume 7, Issue 4 (12-2017)
Abstract
Introduction: Kitchen workers are in danger of slip accident because of slippery surfaces created by contaminants like grease, water and food material. The aim of this study was to investigate the prevalence and slip risk assessment in cooking sites of Shiraz.
Material and Method: This cross-sectional study was conducted on 322 cases from commercial kitchens in traditional and fast food restaurants, located in Shiraz, Iran, who was willing to cooperate in the project. (The total number of restaurants was 1303 cases. And simple random sampling method was used). The risk of slips was assessed using Slip Assessment Tool (SAT), developed by Health and Safety Executive (HSE). Prevalence of slip accidents was investigated using a questionnaire among kitchens staffs. Roughness coefficient was measured using Roughness Meter TQC-SP1560. Data analysis was performed using SPSS-22 software.
Result: The level of slip risk was at moderate level in 47% of studied kitchens and others had low level of slip risk. Slip risk level in kitchens of traditional restaurants was significantly higher than fast foods. The average value of the measured surface roughness was obtained 4191/39 µm. The highest and lowest, respectively 4458/2 and 3977/3 µm were reported. The prevalence of slip accidents was reported to be 50.3%. Most of slip accidents was occurred in the kitchens, and when the floor was wet with water or contaminated with food products.
Conclusion: The results of this study showed that due to differences in the type, method and time of food services and also workload of personnel, slip risk in kitchens of traditional restaurants was higher than fast foods. Approximately, in 50% of studied kitchens, the level of slip risk was assessed as moderate. Some basic interventions in spillage control and cleaning procedures, floor surface characteristics and using slip-resistant shoes are required to reduce the risk of slip in kitchens.
Mehdi Jahangiri, Hossein Molaei Far, Marzieh Honarbaksh, Payam Farhadi, Behboud Khani, Fazal Rajabi,
Volume 8, Issue 4 (12-2018)
Abstract
Introduction: Skin disease caused by exposure to the chemicals is one of the major health-related problems in the workplaces. This study has done to prioritize the strategies for skin exposure with chemical in a painting company.
Material and Method: In this analytical cross-sectional study 7 criteria and 8 selection control methods were initially chosen by surveying the existing records and through the assessments of expert panel and checking the result of previous studies. Subsequently, control strategies were prioritized according to the criteria using Fuzzy Analytical Hierarchy process & Topsis.
Result: Results of the paired comparison showed that the safety of the control strategy (w=0.298) and it’s up to date (w=0.0138) were the most and least important criteria for skin control strategies. Among skin control strategies for chemical exposure, the highest and lowest importance were for training (w=0.817) and work-rest schedule (w=0.233), respectively.
Conclusion: In this study, training was determined as the best control strategies for skin chemical exposure in the studied painting company according to the investigated criteria. This decision-making process could be applied for promotion of the skin health among workers.
Hassan Rajabi-Vardanjani, Hassan Asilian-Mahabadi, Morteza Bayareh, Morteza Sedehi,
Volume 9, Issue 4 (12-2019)
Abstract
Introduction: Usually, in the toxicological studies of airborne particulate pollutants, inhalation exposure chambers are used for providing and distributing the test atmosphere uniformly and stability in the respiratory zone of laboratory animals. The purpose of this study was to design, evaluate and optimize a whole-body exposure chamber, specifically for small laboratory animals exposed to particulate matter.
Material and Methods: In the first, the papers and scientific resources which had provided the technical details and performance of the inhalation exposure chambers were studied, and the advantages, disadvantages and those factors affecting their performance were extracted. Then the assumptions of the initial design of the chamber were prepared with regard to the principles of fluid dynamics and the standard conditions of lab animal housing. To create a uniform distribution of particles inside the chamber, guide plates of flow were used in the upper cone. Numerical simulation and ANSYS Fluent software were used to optimize the initial design. Drawing geometry of the chambers was done using Design modeler software and meshing of the computational field using ANSYS meshing software. The particles used had a mean aerodynamic diameter of 10 μm, spherical, inert, and a density of 1,400 kg. m^-3 and entered the chamber at the carrier gas velocity. Particle concentration was measured in the chambers along the cylindrical radius at 10 cm intervals on the x-axis. Then the percentage of variation coefficient of the particle concentration for each line was calculated. In the final analysis of the results, the geometry design with the lowest coefficient of variation of particle concentration along the selected sampling line was selected as the best chamber design.
Results: The optimized inhalation chamber has a dynamical flow and consists of a cylinder with two upper and lower cones. The flow enters from the upper cone and after passes through the guide plates, distributes in the interior of the chamber and exits from the lower cone. The k-ε turbulence and Discrete Phase Models could have modeled this problem. Design No. 7 was optimal design with the lowest coefficient of variation of the concentration (4.08%).
Conclusion: The numerical simulation method for planning and optimizing of the chambers, at a much lower cost than the empirical methods, was able to provide comprehensive information on the solution field. The analysis of this information led to the selection of the best chamber design to provide uniform concentration of the particles in the respiratory region of the animals.
Elmira Vaziri, Marziyeh Zakeri, Alireza Rajabipoor Meybodi,
Volume 10, Issue 1 (3-2020)
Abstract
Introduction: Nurses, in comparison with other occupations, expose higher job stress; therefore, satisfaction in this job and its characteristics is very important. The purpose of this study was to investigate the effect of occupational characteristics on job satisfaction and job stress with the mediation of emotional work among nurses in Shariati Hospital, Isfahan City.
Materials and Methods: This cross-sectional study was conducted among nurses of Shariati hospital in Isfahan city, in 1397. The population in this study was 180 people selected by Morgan method at about 118 nurses. The data were collected using the job characteristics, job styles, job satisfaction and emotional work questionnaires. The SPSS Ver. 20 and Smart pls 3.2.6 software were used for data analysis.
Results: According to the results, the dimensions of job characteristics such as importance, identity, independence, feedback, and verity of skills on job satisfaction were obtained. Also, the occupational stress by mediating emotional work (superficial and deep work), based on statistical results ( t-test), the value of 8.589 statistics for the impact of occupational characteristics on work emotional, the 6.381 effects of emotional work on job satisfaction and value of 17.382 for significant effect on emotional work on job stress were efficiently achieved with positive effect.
Conclusion: Based on mediating emotional work, the Job characteristics have a positive and significant effect on the nurses’ job satisfaction and job stress. Therefore, the hospital managers should pay more attention to the characteristics and satisfaction of job stress and emotion of the job. The management of job stress and job satisfaction was improved through the recognition of the features of work and emotional work as favorite policies.
Mehdi Amirkhani, Farbod Kouhpaye, Mohammad Reza Rajabi, Majid Najafi Kalyani, Javad Salami,
Volume 11, Issue 2 (6-2021)
Abstract
Introduction: Occupational injuries are considered as the most common work-related risk factors among the medical sciences students. Medical sciences students are mostly exposed to needle stick injuries and sharp objects when training in the clinical environment due to lack of enough experience. This study aimed at investigating the frequency of these injuries and the related causes of its occurrence among the students in various disciplines of medical sciences.
Material and Methods: This descriptive cross-sectional study was performed on the students of Fasa University of Medical Sciences in 2017. All medical, nursing, operating room, anesthesiology, and medical emergencies students were recruited to this stud using census method. Then, a questionnaire was distributed among them. The data collection tool in this study was a researcher-made questionnaire consisting of two parts of demographic characteristics and the related causes of the occurrence of injuries. After completing the questionnaire by the students, data management and analysis was performed using statistical tests and SPSS 22.
Results: The results of this study showed that 74 students (24.3%) had reported being injured caused by sharp objects at least once over their studying period of time. Twenty-six students (35.1%) described their carelessness as the main cause of the injuries. Intramuscular injection with 20 cases (27%) was the most important procedure leading to needle stick exposure. Chi-square statistical test showed that there was a statistically significant difference between the frequency of injuries caused by sharp objects and gender, so that the exposure frequency was more reported by the male students (P <0.05).
Conclusion: The results showed that injuries caused by needle stick and sharp objects are high in medical sciences students. Due to this high prevalence, in educational programs, and especially in the clinical setting, accurate and precise training and arrangements are highl recommended with the emphasis on safety measures. Also, the use of personal protective equipment (PPE), before and during working with the patient is essential for medical sciences students. In addition, due to disability of injured students, making a planning program for training them about the potential risk of these injuries is necessary.
