نشریه مطالعات علوم محیط زیست
سال چهارم شماره 3 (پاییز 1398)

The purpose of this study was to identify the status of green management in public libraries in Tehran affiliated with the Public Library of Iran.

The research is applied in a survey-descriptive manner.

The research findings showed that the studied population in energy management was 3.48 in inappropriate status, water management and green spaces with an average of 2.67 unsatisfactory status, paper management with an average of 0.832, appropriate status, waste management with an average of 82.22, 6 In average, transportation management with an average of 3.85 in inappropriate status, air management with an average of 4.27 in inappropriate status, is in sound management with an average of 36.5 in the middle position. In green management and planning with an average of 2.24 in inappropriate status, education, awareness and culture of environmental issues in the community with an average of 2.30 and to employees with an average of 2.4 in unfavorable condition.

The results of this study showed that green management criteria in the building and equipment of the research community are moderate in the levels of management and planning of green, education, awareness and culture in society and staff in an unfavorable situation

The aim of this reserch is the study of the willingness to pay to decrease the haze in Ahvaz city. For this porpuse, the sampling data of 200 households of Ahvaz city as well as the contingent valuation method were used. The results show the avarage of the monthly willingness to pay for each person is 71323 Rial. Also, the variablies age, offered price, education level have negative effect, and the variablies income level, and illness have positive effect on the willingness to pay. The aim of this reserch is the study of the willingness to pay to decrease the haze in Ahvaz city. For this porpuse, the sampling data of 200 households of Ahvaz city as well as the contingent valuation method were used. The results show the avarage of the monthly willingness to pay for each person is 71323 Rial. Also, the variablies age, offered price, education level have negative effect, and the variablies income level, and illness have positive effect on the willingness to pay.

Environmental concerns make interest in the use of biodegradable alternatives from renewable sources. The use of cinnamon essential oil and its antimicrobial activity in the production of starch-based nanocomposite films is considered. By adding cinnamon essential oil in TiO2 films, the strain to the breaking point significantly decreased and the tensile strength increased. By simultaneously adding cinnamon essential oil and TiO2 nanoparticles, the permeability to water vapor in nanocomposite films is strongly reduced. The results of moisture absorption test confirmed the decrease of moisture absorption of nanocomposite films. In films containing 5% cinnamon essential oil, the amount of water absorption decreased by adding TiO2 nanoparticles. The synergistic effect of cyanide essential oil with Tio2 resulted in a sharp decrease in solubility in water films.Simultaneous addition of TiO2 and cinnamon has improved mechanical properties and deterioration. With increasing content of TiO2 and cinnamon, moisture absorption, solubility and permeability decreased. Also, TiO2 increased the inhibitory properties of starch films, with the increase of TiO2 concentration decreasing the moisture absorption, WVP and solubility and increasing the angle of contact. The research findings indicated that the functional properties of starch films can be improved by adding the combined CEO and TiO2.

This study implemens the OGP guideline to improve the HSE status of petrochemical contractors. In order to investigate the research objectives, five petrochemical contractor companies, under contract with Aryassoul Petrochemical Company, was selected. The companies surveyed in a one-year period were reviewed by conducting 2-month periodic audits in accordance with the OGP checklist and suggested solutions for improvement. After that, the suggested solutions proposed to them, where applying these standards could result in a significant degree of safety and health. For example, the Zarrin Kangan Technical Engineering Company’HSE rank has been improved from 41.89 in the initial phase of the survey to 92.01 at the end of the project, which has the best performance in applying safety and health indicators. Zarin Kangan services companies with 88.62, Senna Andisheh with 87.33 points, Petroturbin with 85.40, and Pars Lian Tabarab with 84.70 are second to fifth ranks respectively. In this study, we observed that OGP standards have had a significant impact on the safety and environmental health of contracting companies. We also observed that the highest performance was observed in compliance with HSE standards by contracting companies in the phase after the initial audit.

Evaluation of water quality and bed load sediment contamination of Qareaqhaj River to heavy metals, Kahfr Watershed, Fars provinceIn order to determine the water quality and sediments contamination of Ghare-Aghaj River 10 sediment samples and 10 water samples (in 2 periods) were taken and analyzed. The analysis of physico-chemical diagrams shows that the water type of river is sulfate-calcific and river water settele in the C3S1 category. According to the concentration maps drawn by the GIS software, the mean concentration of most of elements increases from the upstream to the downstream, but this increase does not reach the level of pollution and is not alarming. Statistical studies on the physicochemical parameters of water samples and heavy metals show that EC values are strongly correlated with TDS, Hco3, chlorine and magnesium. Statistical studies showed that there is a high correlation between nickel, iron, zinc, copper, iron and cobalt elements, which shows the same stability of these metals in sediment samples studied.