RESUMEN
Notating the criteria of an expert teacher based on the students' viewpoints and using them in teaching process has a prominent role in enhancing the education quality
This study aims at identifying those characteristics in occupational health students' opinions. In this cross-sectional study in 2012, using random sampling method, 200 of occupational health students in Tehran University of Medical Sciences were selected. Requirement data collection was using a questionnaire with ?= 0.85. The questions were designed in two domains, demographic and expert teacher criteria. Finally, data analysis was carried out through SPSS software version 16. Results showed that before, after and current education of four domains ability, features such as analysis method and text selection [81.4%], accurate and comprehensive examination in final [80.2%], dominance over the scientific subjects [91%] and in general, abilities, educational discipline and manual [86.4%] were respectively recognized as important factors for experted teacher. Moreover, no significant relationship was found among gender and field of study and the above mentioned four domains [p> 0/05]
In this study, teaching ability was the most important factor in students' viewpont; hence, it is recommended that the mentioned points should be taken inro more consideration in this domain for enhanced teachers' operation
RESUMEN
Flour dust has been introduced as one of the effective factors in the prevalence of respiratory disorders among the workers of the flour production factories. The purpose of the present study is to examine the effects of this pollutant on the pulmonary functions and survey the prevalence of respiratory symptoms among workers of flour production factories in Arak, Iran. Exposure to flour dust is used to classify subjects into exposed [38 male workers of production plant] or unexposed groups [37 male employee from administrative section]. Exposure level to flour dust, the prevalence of respiratory symptoms and pulmonary function in two group were studied using air sampling [based on method NIOSH 0600], a researcher made questionnaire on respiratory symptoms and Spirometer, respectively. The results indicated that workers of the production plant are exposed to high concentration of flour, which causes a decrease in the ratio of FEV1 / FVC compared to the unexposed ones. Among study respiratory symptoms, subjects had reported significantly more sputum secretion than that in control group. Furthermore intervening parameters, including age, work experience, body mass index and smoking didn't show a significant effect on the pulmonary function of the individuals. Exposure to flour dust concentration with higher than threshold level values causes a decrease in workers respiratory capacity. Therefore, it is recommended that the reduction of both exposure risk and the 8-hour time-weighted average concentration of flour dust should be considered
RESUMEN
Sleeping is an important physiological process, wielding deep effect on the spiritual and physical health of individuals. The present study has been carried out to investigate workers' sleep quality in GoleGohar Mineral Industries Co., Sirjan, Iran. This cross-sectional and descriptive-analytical study has been carried out in 2012. The statistical society included 345 workers in of psychological health of workers in Hematite and Pelletizing section in GoleGohar Mineral Industries Co., Sirjan. The sampling method was simple random selection. Pittsburg Sleep Quality Index [PSQI] was applied in the study, with the Cronbach validity of 0.83. Analysis of data was carried out under SPSS 19 software using descriptive and inferential statistics tests. Workers averaged 30.92+/-4.78 years of age and their working experience averaged 5.47+/-3.24 years. 82.9 percent of the workers responding to the questionnaire were satisfied with their jobs, and 17.1 percent were not satisfied. Body Mass Index [BMI] for workers averaged 24.5+/-3.51 Kg/m3.51 Kg/m[2] 46.9 percent of workers experienced satisfactory sleep and 53.1 percent of them experienced unsatisfactory sleep. The present study has reported workers' sleep quality in a modest level. With high influence of sleep quality on individual performance and on their general health, and high incidence of workplace events, this aspect of workers' health should be in the focus of policy-makers and relevant authorities in health sector
RESUMEN
Background and aims: Development and rapid increase of computer usage in all aspects of industry and society has been caused remarkable increase in musculoskeletal disorders of upper limbs. So, this study was conducted to determine the prevalence of upper musculoskeletal limbs disorders, to assess potential risk to them and their relations with demographic characteristics among computer users of a power company`s Computer Users
Materials and Methods: In this cross sectional and descriptive - analytic study, all computer users who worked in official units [60 people] of a power company that had entry criteria were chosen in 1390. In this study, Nordic questionnaire and RULA method were used. Data gathering was analyzed by applying SPSS13 software, statistical tests, Chi-Square and Independent Sample T- test
Results: The results of the questionnaire revealed that the most pain was related to back [80.00%], neck [73.30%], arms/ wrists [73.30%], and shoulder [46.70%] respectively, in past year. There was also significant relation between the outbreak of back musculoskeletal disorders with age variations, job experience, and users` length [p<0.05]. The results of RULA revealed that 73.3%, 6.7% and 20% of computer users were exposed to medium, high, and very high risk of exposure to work, respectively
Conclusion: Computer users were determined from the medium risk level to very high risk level. Thus, in accordance with determined priority level of corrective action, ergonomic intervention and changes commensurate with working condition should be carried out. In order to prevent disorders and obtaining more efficiency, ergonomic instructions related to working with computer were trained to staffs and recommendations were presented in this field