فهرست مطالب amir hossein davami

The most critical environmental challenge of maritime transport in recent decades has been oil pollution. The present study was carried out to identify and determine the rate and ranking of oil pollution in the unloading and loading dock of Imam Khomeini Port by the Development Approach of the Management Model of Prevention and Response against Pollution in Emergencies in 2020.

In the present descriptive-applied study, the criteria and sub-criteria influencing in prioritizing responses in oil spill emergencies in the unloading and loading dock of Imam Khomeini Port were identified by the documentary method, prioritized based on the technique for order performance by similarity to ideal solution (TOPSIS) multi-criteria decision-making method, and scored by 10 experts. McKinsey’s 7s gap analysis method was also used to estimate the gap between the current and the ideal situation.

Out of 18 oil pollution scenarios, 4 were determined as emergencies. Conservation of environmental resources in case of an accident and determination of responsibility before accidents occur, with mean scores of 4.4 and 4.35, were determined as the most important agendas for planning in emergencies. In the gap analysis process with McKinsey’s method and the output spider web model, 7 components of strategy (1.65), skills (1.75), staff (2.2), management style (2.27), shared methods (2.38), structure (2.54), and system (2.79) were determined as the emergency response plan priorities.

The study’s results showed that while several factors can result in oil pollution emergencies in the unloading and loading dock of Imam Khomeini Port, there is no ideal situation for managing these threats based on gap analysis.

Background & Aims:

Atmospheric phenomena can directly influence the occurrence of dust events. The western and southwestern parts of Iran are considered dust hotspots. This study aimed to examine and determine the origin of dust particles in Ilam province and its relationship with climatic components in the period 2012-2018.

In this descriptive-applied study, satellite images were obtained from the data transmitted from the Landsat TM satellite. In addition, HYSPLIT model was used to search for dust sources at an altitude of 1500 m or less (dust occurrence altitude class). Using SPSS 18 and OriginPro 2018, time series of data and linear regression equations were analyzed to determine the relationship between particulate matter and climate indicators.

The results for the origin of particulate matter in Ilam province indicated that out of a total of 165 daily dust events that occurred in this province from 2012 to 2017, 69 (daily) dust events (42%) originated from Iraq, 36 (22%) from Syria, 29 (17%) from Saudi Arabia, 16 (10%) from the Persian Gulf, and 15 (9%) from Jordan. The results of multiple regression analysis based on the influence coefficient of the absolute value of the standardized coefficients indicated that temperature with an influence coefficient of 0.370 was identified as a significant factor related to the particulate matter. In the correlation analysis, the variables of temperature, humidity, dew point, and cloudiness showed a significant correlation with particulate matter at the level of 0.03.

Considering the relationships between dust phenomena and climatic factors, they can be used to predict dust phenomenon.

An accurate estimation of air quality and meteorological conditions is required to make the sound air pollution management decisions. Thus, the data analysis from monitoring stations is unavoidable in air pollution research.  The present study uses the statistical tests to survey the homogeneity of meteorological factors and air quality station data in Mahshahr.

At first, a decade's worth of meteorological station data and the data from air quality stations in Mahshahr were collected over 2016-2019. The minimum and maximum values, standard deviation, variance, skewness, and kurtosis of parameters were then calculated, and heterogeneities and improbable fluctuations in the data were examined.

The results indicated that an average of 12% of data from the meteorological station in the special region were invalid, and that the data from this station had a non-normal distribution. Moreover, 98% of meteorological data collected at Mahshahr airport were valid which had a normal distribution. Statistical analysis of pollutant concentration data from air quality stations revealed that among 21 pollutants monitored across four air quality stations in the study region, only PM2.5 in Mahshahr station, NO2 in the mobile station, and CO, O3 in the special region fix station yielded normal distributed data.

Consequently, when compared to other regional stations, the data from special zone's fixed air quality station, and Mahshahr meteorological station were the most reliable, with an average invalid data percentage of 16.4 and 0.48, respectively. Finally, it is recommended that the data should be adjusted to a more normal distribution over the desired period before using the data from other stations.

Occupational accidents impose a lot of direct and indirect costs on the national economy of the country. Because, as a fact, resources are  limited  for  reducing  the  risks  and  costs  can  affect  the  optimal  investment  in  safety issues, the aim of this study was to calculate the economic costs of occupational accidents in one of the South Pars Gas Refinery, Assalouyeh, Boushehr Province.

The present research was a descriptive-analytic study, and the costs from 92 occupational accidents occurred in the South Pars Gas Refinery during the period of 2017 and 2018 is estimated. Estimation of these costs contributes to decision-making for cost control. The systematic accident cost analysis (SACA) method, which calculates their costs and information in the forms of each incident and calculates the total cost based on the type of incident after the analysis of the cost of the incident. Excel, SPSS version 17 (SPSS Inc., Chicago, IL, USA), Kolmogorov-Smironov and Chi-squared tests were used for data manipulations and statistical analysis.

The Most working days were lost in the Gas Refinery (12613 days). The evaluations of accident cost showed that 2/3 of the costs of occupational accidents are visible in the corporate accounting information systems reviewed while 1/3 is hidden from management view. As can be seen the costs due to the absence of the injured employee are the largest cost category with an average of 71%. The highest cost of occupational accidents for a company with 1500 employees was estimated to approximately 27,440,000,000 Rials.

The costs of accidents on employers and ultimately the country's economy are noticeable.  It is really important to recognize the accidents’ causes, control the rate of them and provide sufficient and appropriate occupational health and safety services.

Municipal solid wastelandfill hasgreatpotentialto contaminatethe environment andhumanhealth effectsdue todecomposition, leachateand gases. Theeffectson theenvironmentifnotmanagedappropriately, will bringseveral damages on sensitive areas. Shadeganwetland is located in Khuzestan province in southwest of Iran. This wetlandis exposed to manyrisk factorsinternationally.Oneof the major factorsthreateningShadegan is disposalofurban solidwastein it. According to thedaily28.2tonsdisposalof solid wasteinwetland,ecological, fishing, economic values, settlementsandlivelihoods, it is important that evaluation ofselectioncriteriaof shadegan landfillbased onnationaland internationalenvironmental regulationsshould be done. This researchis based onfield studiesusingGISlayersaccording tonational and internationalregulations andstandardscarried outin 2013. Results showthat solid wastelandfill ofShadeganinconsistentwithnationalcriteria, butare morecompatiblewithinternationalcriteria. Overall, thelack ofconsistentnational and internationalstandardswas38.2percent. The mainparameterswhicharenotconsistent with Shadeganlandfill, include adjacent tothemain roads, water wells, residentialcentersandthe lagoon.