Current Issue

Vol 13 No 3 (2021)
Published: 2021-09-30


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    Despite abundant resources, the automotive industry is reported to adversely impact the environment owing to the use of heavy machinery, diverse and governmental management policies for car production per hour, remarkable employed labor force, production cycle timing, etc. For this purpose, many studies involving environmental risk management have been conducted. To this aim, the present study has been carried out in pre-paint part No. 2 of IKCO (preparation process). In this regard, using FUZZY FMEA and VIKOR methods, the identified risks were assessed and reformative measures and solutions were classified, respectively. A total of 15 individuals considered HSE experts of IKCO were selected as a statistical sample size according to the Morgan table. Consequently, the high level risks were identified and appropriate solutions were suggested to reduce the environmental effects, and according to achieved scores, “torch adjustments based on compliance report” was selected as the compromise solution.IKCO should consider torch adjustment based on compliance report actions as its first priority.

Original Article(s)

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    The jarless cyclone calibration method is an appealing approach because it removes the need for calibration adapters and eliminates potential sources of error that result from poor or inconsistent seals in calibration adapters or calibration jar lids. A detailed review of the jarless calibration method was conducted to (1) examine the rationale behind the initial pressure drop range specified by the method and (2) evaluate the accuracy of the method in contrast to flow rate measurements in a well-controlled, jar protocol. Four types of respirable cyclones and two filter brands with samples from three separate production lots were considered as components of the sampling trains under consideration. Volumetric flow rate and pressure drop were measured under controlled conditions in a cylindrical jar designed for these determinations. The initial challenge pressure range evaluated in this study was modified based on cyclone type. The measured pressure drop fell within the modified range for all configurations considered, indicating the modified ranges were appropriate. The accuracy of the jarless method was then evaluated by comparing measured volumetric flow rates using different calibration methods for various cyclone, filter brand and filter lot combination. The jarless method provided accurate calibration results utilizing the modified initial pressure drop ranges utilized in this study. Therefore, it is recommend the initial pressure drop range specified by the jarless method be modified to account for differences among cyclone types.

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    The aim of semi-experimental research which was performed by pre-post-test method was to discuss the effectiveness of life skills training on assertiveness and work engagement among personnel of Dr. Shariati vocational and rehabilitation center of Tehran. The statistical population consisted of all staff working in above center (18 people) in 2018. Gambriel and Richi (1975) and Selano and Shufili questionnaires (2001) were used to estimate assertiveness and work engagement. The instruments had internal coincidence as 0.88 and 0.95. 60 educational programs were considered as experimental intervention pertain to life decuple skills (each skill for 6 hours’ training). In order to test hypothesis, t correlative groups were used. The results showed that experimental intervention influences on increment of assertiveness and its subscales (controversial and fundamental) and general work engagement has negative effect on attraction and powerful by interval 95% (p<0/05).


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