فهرست مطالب solale ramzani

Background and

Low frequency noise (LFN), even at low levels, can have an adverse effect on individual's mental health and performance. However, personality trait is one of the most important influencing factors. Therefore, the aim of this study was to investigate the perception of loudness, sensitivity, and annoyance of LFN in relation to personality traits.

This semi-experimental research was conducted on 40 students of Mazandaran University of Medical Sciences in 2022. The Eysenck Personality Questionnaire‐Revised (EPQ‐R) was used to assess personality traits. Participants were exposed to LFN at Equivalent continuous sound level (Leq=65 dB in A-weighted) for one hour in an acoustic room. Then questionnaires of noise annoyance, Weinstein noise sensitivity, and loudness perception were used, respectively. Finally, statistical analysis was performed using SPSS V25 and applying Chi-square, independent t-test, and multivariate analysis of variance (MANOVA).

The mean value of annoyance, sensitivity, and noise perception were 5±2.05, 65.2±14.88, and 3.55±0.68, respectively. The results of the study indicated that extroverted and introverted personality traits did not have a significant correlation with annoyance, sensitivity, or perception of loudness (P>0.05) while the results of the MANOVA test showed that neuroticism was the most influential factor on sensitivity (P<0.05).

The findings of this study have confirmed that personality traits, such as neuroticism, can significantly affect the sensitivity of individuals when exposed to low frequency noise. As a result, it is important to consider factors beyond engineering control solutions to address and  reduce the levels of annoyance caused by noise. Therefore, other influential factors such as individuals' personality traits should also be taken into account.

Exposure to manganese fume in the welding process leads to adverse neurological effects on the health of welders. The aim of the present study was to investigate the relationship between biomarkers of manganese exposure and compare the frequency of these symptoms with unexposed group.

35 welders as exposed group, and 40 administrative workers as unexposed controls, were participated in this study. Neurobehavioral symptoms data were gathered using Q16 questionnaire. Manganese concentrations were determined according to the NIOSH 7301 method. The concentration of manganese in blood of the welders was also measured by ICP-OES. Statistical analysis was performed by using MINITAB 17 software at the significant level of 0.05.

The mean exposure to air manganese was 0.45 ± 0.08 mg/m3. Manganese concentrations in blood samples of welders (0.16±0.0 2 µg.ml-1) were significantly higher than unexposed workers (0.04±0.002µg.ml-1). Also the frequency of neurobehavioral symptoms of welders was significantly higher compared to unexposed workers (P <0.05). The correlation between neurobehavioral symptoms and blood manganese was significant for welders (P <0.05, r=0.4). As a result, by increasing the concentration of blood manganese levels, the neurobehavioral symptoms were also increased.

Due to the high level of exposure to manganese in welding fume for welders and in order to prevent neurobehavioral symptoms preventive measures such as engineering and management control techniques are recommended to reduce exposure.

Risk assessment of toxic or hazardous chemicals enables industrial hygienists to make appropriate decisions regarding management provisions in a healthy workplace. Exposure to total fumes and manganese during welding can have harmful effects on welders’ health. Therefore, the present study was conducted in the metal industry to evaluate the concentration and determine the risk of welders’ exposure to total fumes and manganese in 2018.

In this descriptive-analytical and cross-sectional study, welding fumes were sampled in the breathing zone of 35 welders using filters and cyclones moreover, the concentration of fumes was determined by a weight method. The samples were analyzed according to NIOSH 7301 method using an Inductively Coupled Plasma-Optical Emission Spectrometry to determine the manganese concentration in the fume. Moreover, health exposure risk assessment of workers exposed to welding fumes was performed using the recommended method by the Singapore Health and Safety Association method. The data were analyzed in MINITAB software (version 17). A p-value less than 0.05 was considered statistically significant.   

The mean concentrations of total fumes and manganese produced in Shielded Metal Arc were 9.56±1.67 and 0.45±0.08 mg/m-3, respectively. These values are about 2 and 22 times higher than the recommended occupational threshold limit for total fumes and manganese according to the American Conference of Governmental Industrial Hygienists, respectively. The risk assessment results showed that the mean values of exposure to total and manganese fume for the welders were moderate and high, respectively.

Due to the high level of welders’ exposure to manganese during welding in the metal industry, preventive measures, such as engineering and management control techniques are recommended to reduce exposure to these fumes.

Musculoskeletal disorders (MSDs) are among the major causes of occupational injuries and disability in industrialized and developing countries. The aim of this study was to compare MSDs in female staff working in radiology department of Imam Khomeini and Bouali Sina hospitals in Sari, Iran, 2018.

The research population, in this cross-sectional study, included 45 female staff working in radiology departments who were selected via census sampling. Then, 20 subjects who met the study inclusion criteria were studied. The Nordic Musculoskeletal Questionnaire (NMQ) was administered to collect the data. Statistical analysis was performed in SPSS V16.

The mean age of participants was 37.7 years. Findings showed that during the past 12 months, musculoskeletal disorders were more prevalent in shoulder area (65%), wrists and hands (64.7%), and elbows (55%). There was no significant correlation between acute skeletal disorders and age, height, weight, and BMI.

The prevalence of musculoskeletal disorders has an increasing rate in radiography staff. Lack of appropriate trainings result in more occupational disabilities, therefore, improving working conditions and use of electronic systems rather than mechanical systems for radiation chamber door are suggested.

The safety culture of the patient is one of the main components of the services, which means preventing any injuries and wounds to the patient while delivering health care. The studies show that safe behavior cannot be used only by setting the rules and regulations. Creating an effective culture of patient safety prevents many accidents and helps the organization to improve services. Therefore, it is necessary to assess the patient’s safety culture. The present study aimed to evaluate the current status of Patient safety culture in operating room staff of educational centers in Mazandaran University of Medical Sciences

The present cross - sectional and analytical descriptive type study was performed in hospitals of Mazandaran University of Medical Sciences.136 employees of operation room were selected through stratified random sampling. The data collection tool was a two-part questionnaire including demographic information and the standard questionnaire including 42 questions of Hospital Survey on Patient Safety Culture (HSOPS).Answers of the questions were designed on a 5-point Likert scale. Data were analyzed by Mann-Whitney and Kruskal-Wallis statistical tests using SPSS software version 16.

The results of this study show that the highest mean scores between the two dimensions of overall perception of patient safety and non-punitive response in case of an error were 15.16 and 14.96 , respectively and the lowest mean score for teamwork between units and the staffing issues of employee were 8.32, and 8.82 respectively. The overall safety culture of the patient was not significantly related to gender, education, and marital status. However, a positive relationship was observed between the work history and the patient's general culture score.

By measuring the safety culture of health care organizations, we can identify the strengths and weaknesses of these organizations in terms of patient safety and plan for proper safety development in the hospital. Based on the results of the present study, providing sufficient personnel and job standards for personnel and allocating sufficient resources to improve the quality and care and improving team work between units by managers may help to promote the safety culture in health care centers.Along with the main mission of hospitals which is providing the effective and safe services, concentration on patient safety culture should be as a priority in management plans to provide a basis for enhancing patient safety

The most prevalent accidents and injuries occur in industries. Risk assessment and risk management are the basis for planning to provide solutions and control hazards. Therefore, the present study aimed to identify and assess the workplace hazards using the failure mode and effects analysis (FMEA) approach in a carpet manufacturing company located in Mazandaran.  The current study utilized FMEA approach to evaluate the potential risk factors. Some units of carpet manufacturing company including 8 different workstations were assessed with 60 employees. Furthermore, failure modes and effects, as well as the causes of the failure of each component, were evaluated in this study. Subsequently, the Risk Priority Number of each workstation was separately calculated and the crisis level of each risk was prioritized.  According to the results of the study, out of 55 risk factors identified in 8 different workstations at the factory, 18.2 %, 67.3%, and 14.5% of these risk factors were within acceptable, unacceptable, and emergency level, respectively. Moreover, the units, including painting, dipping, extrusion, and assembly obtained the highest risk frequency in terms of explosion and electric shock.  According to the results of this study, workers are highly susceptible to occupational accidents and injuries due to the presence of high risks factors in the above-mentioned unit. Although FMEA approach is applicable to identify the potential failures in work-related accidents, it is recommended using Preliminary Risk Assessment Method in order to conduct a more exact and comprehensive assessment.