Haji Omi Kalteh; Reza Hekmat Shoar; Ebrahim Taban; MohammadAmin Faghih; Mohsen Yazdani Avval; Sana Shokri
Volume 23, Issue 1 , May and June 2016, , Pages 58-65
Abstract
Background and aims: Awkward posture can cause musculoskeletal disorders while working with computers for the computer users. the aim of this study was to evaluate the effect of an ergonomic training program in poor condition physically at work and reduction of other causes of musculoskeletal disorders ...
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Background and aims: Awkward posture can cause musculoskeletal disorders while working with computers for the computer users. the aim of this study was to evaluate the effect of an ergonomic training program in poor condition physically at work and reduction of other causes of musculoskeletal disorders in one of the subsidiaries of National Iranian Gas Company. Evaluation of posture before and after the training was done by Rula. Methods: The statistical population consisted of 52 employees had an administrative unit. After an initial assessment of body condition during operation, ergonomics intervention program to reduce the factors causing musculoskeletal disorders over a period of two months was given to the users. Then the data using SPSS version 19 and by chi-square and t-test analysis was performed. Results: the final score is based on a minimum of three and maximum of seven subjects before training and over two months, the final score was a minimum of 2 and maximum of 4. Conclusion:Chi-square test showed a significant effect between ergonomic training intervention programs on reduction of awkward musculoskeletal postures of users.
Akram Mahmoudi Baghkheyrati; MohammadHasan Rakhshani; Ahmad Allahabadi; Reza Hekmat shoar
Volume 20, Issue 4 , January and February 2014, , Pages 457-463
Abstract
Background and Purpose :Cost-benefit equations is one of the most important by of GNP and a training a Sustainable development as designated by professionals of occupational health .Therefore ‚ drivers as a forgotten index in sustainable development and its effect on community health.
Methods & ...
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Background and Purpose :Cost-benefit equations is one of the most important by of GNP and a training a Sustainable development as designated by professionals of occupational health .Therefore ‚ drivers as a forgotten index in sustainable development and its effect on community health.
Methods & Material : This descriptive analytical study involved the statistical community of 55000 vehicles in Sabzenar ‚Iran ‚from which 380 cases were splected by systematic sampling during six months from 17:00 to 20:00‚winter and spring 2011 with a traffic load peak ‚where right – trun violations were recorded at two major crossroads The obtained data were analyzed in SPSS 10.5 using normal Kolmogroff-smironoff and chi-square.
Results: significant relationship was observed between .occupation type and attitude (P=0.013) ‚ occupational history and attitude (P=0.03)‚ as well as residential area and attitude (P=0.011)‚ however‚ no significant relationship was found between age and attitude (P=0.0149)‚ education and attitude (P=0.0118) ‚ at a confidence interval of 95%. Total wasted time per year at a crossroad with three outlets was 1/123/260 hours per year. Given a 4 – cross road typical city in Iran with 340 cities ‚ an estimated 1/527/633/600 hours per year will be wasted. As far as the cost is concerned ‚ the total amount of gas wasted (7000 Rials/litre)will amount to 1/226/534/400 Rials per year in one single cross road in Sabzevar ‚Iran .The same equation applies here to produce a cost estimation of 167/280/000/000 Rials/year nationwide.
Conclusion: Immediate action for geometric correction of crossroads is required for preventing wastage of national resources and imposing economic costs on community members and the wasted time due to abnormal traffic behavior‚ increased GNP and moving toward Sustainable development will follow as a Consequence.
Arash Akaberi; Reza Hekmatshoar; Majid Fallahi; Seyyed Mehdi Razavi
Volume 19, Issue 4 , January and February 2013, , Pages 395-399
Abstract
Background: Musculoskeletal disorders are highly one of the most important occupational health issues in the world, now days. Materials and Methods: A cross-sectional study among 333 mothers' home working carried out. We used modified Nordic questionnaire and information gathered by trained persons. ...
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Background: Musculoskeletal disorders are highly one of the most important occupational health issues in the world, now days. Materials and Methods: A cross-sectional study among 333 mothers' home working carried out. We used modified Nordic questionnaire and information gathered by trained persons. Results: The commonest musculoskeletal disorders were from the low back (49.5%), Resulted showed that between low back , knuckle pain and BMI (P=0.008), between pain and use of stair (p=0.004) were significant relationship. Conclusion: between musculoskeletal disorders and use of devices in the homes were significant relationship.
Tahereh Vazeiri; Abolfaz Rahmani Sani; Ahmad Allahabadi; MohammadHossein Saghi; Reza Hekmatshoar
Volume 19, Issue 2 , May and June 2012, , Pages 127-135
Abstract
Background: The biosorption process has found numerous applications due to low cost, availability, biosorbent reuse, and utilization of excess sludge from wastewater treatment facilities. The aim of the present study was to evaluate the efficiency of dried activated sludge in removing Reactive Orange ...
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Background: The biosorption process has found numerous applications due to low cost, availability, biosorbent reuse, and utilization of excess sludge from wastewater treatment facilities. The aim of the present study was to evaluate the efficiency of dried activated sludge in removing Reactive Orange 3R dye. Materials and methods: For this experimental, laboratory study, dye solutions were prepared in three concentrations: 50, 100, and 150 mg/L. The solutions were then subjected to adsorbent in weights 0.2, 0.4, 0.6, 0.8, and 1.0 g for various durations (0.5, 1, 1.5, 2, 2.5, and 3 hours) in different pH levels (4, 7, and 12). Data was analyzed using Excel software. Results: Increasing contact time from 0.5h to 3h, the dye removal efficiency increased from 56% to 76%. When the weight of the biomass increased from 0.2g to 0.8g, the dye removal efficiency increased from 58% to 72%. High initial iron concentration had an adverse effect on iron removal efficiency. Increasing initial dye concentration from 50 to 150 mg/L decreased iron removal efficiency from 71% to 62%. Freundlich isotherm models could describe the adsorption equilibrium of the dye onto the activated sludge. Freundlich isotherm represented a better correlation compared to other isotherms (R2>0.952). Also, second-order models fit well with experimental data (R2>0.979). Conclusion: This technology for dye removal from industrial wastewater, in addition to the optimal use of biomass from wastewater, can help resolve the environmental problem of wastewater dye excretion.