Vahid Gharibi; Mohammad Ghaedi Jahromi; Mohammad Reza Mohammadnia; Seyedeh Mahsa Hosseini Gharbi
Abstract
Background: Environmental risk assessment, the process of qualitative analysis of potential hazards and coefficients of potential risks in the project, as well as the vulnerability of a peripheral environment need to be taken into account. Accordingly, the purpose of this study was to identify and investigate ...
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Background: Environmental risk assessment, the process of qualitative analysis of potential hazards and coefficients of potential risks in the project, as well as the vulnerability of a peripheral environment need to be taken into account. Accordingly, the purpose of this study was to identify and investigate the potential hazards and make practical suggestions in order to eliminate or reduce the environmental hazards related to gas wells drilling effluents and wastewater in southern cities. Methods: This is an applied research using descriptive-analytical method. The required data were categorized into two groups including: a review of written sources and a field study of one of the oil and gas wells based on the available components and variables. Data analysis was done using EFMEA (Environmental Failure Mode and Effects Analysis) and the components and variables were analyzed using Analytic Network Process model (ANP). Analysis of variance and correlation coefficients were also used to investigate the relationship between the components. Finally, a strategy model was developed based on the studies conducted to determine the effectiveness of corrective and control measures. Results: Research findings based on EFMEA environmental risk assessment of oil and gas drilling effluents and wastewater showed that 83.4% of the risk scores, in this case, were placed at the medium risk level and 16.6% at the low-risk level. The results of the network analysis model also showed that drilling effluents and wastewater caused by drilling wells of Oil and Gas had the highest impact (0.124) on the degradation of vegetation and also on the destruction of the natural habitats in this region. Conclusion: Accordingly, some strategies such as integration of EFMEA and ANP Models which were developed to reduce the environmental crises in oil and gas drilling have been very useful and appropriate.
Vahid Gharibi; Nafiseh Nasouhi; Mahshid Badrian; Mahdieh Nikoo; Mehdi Jahangiri
Abstract
Background: Teachers are prone to Voice Disorder (VD). The present study aims to investigate the onset of VD symptoms and their effects on the job performance of the elementary school teachers. Methods: This cross-sectional, descriptive-analytical study was conducted on 121 male and female elementary ...
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Background: Teachers are prone to Voice Disorder (VD). The present study aims to investigate the onset of VD symptoms and their effects on the job performance of the elementary school teachers. Methods: This cross-sectional, descriptive-analytical study was conducted on 121 male and female elementary school teachers in Mobarakeh County during the academic year 2018-2019. Data were collected using a researcher-made questionnaire. In doing so, the researchers talked to 10 people composed of qualified experts in occupational health, ergonomics, and health education and a number of teachers about how to design the questions as well as the answer scale for each section. Results: In the present study, the prevalence of VD was higher among female teachers (41%) compared to male ones (20%). That is to say, the prevalence of the VD symptoms in female teachers was more than twice that of the male teachers. The study results demonstrated a significant relationship between having a silent resting place and coughing (p=0.028). Accordingly, the prevalence of the symptoms of cough was significantly higher in the teachers who did not have a silent resting place in comparison to those who benefitted from a quiet resting place. Conclusion: Thus, it is recommended that safety, occupational health, and ergonomic programs should be designed for teachers at the Ministry of Education in collaboration with concerned specialists. Periodic examinations, identification of teachers with disorders, culturalization, and education are among the themes of these programs.
