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Showing 5 results for Evaluation
Design, Production and Evaluation of Electronic Hook forMice Population Controlling
M.r Massoudi Nejad, M. Manshouri, M. Khatiby,
Volume 3, Issue 3 (10-2010)
Abstract

Backgrounds and Objectives:since large cities of Iran due to specific population, topographic, cultural and economical conditions have a numerous population per surface unit, , results in everincreasing population and it.s accumulation and have prepared favorable conditions for increasing various mice and rats species in these cities. Efforts, designing, construction and evaluation of electronic traps for mouse and rat controlling is one of the controlling methods which may be studied beside the other methods.
Materials and Methods:At first the types and species of mice and rats in Tehran city were studied (including length, weight, behavior characteristics etc.). Next, using a system producing attractive fragrance attracts mouse and rat to the trap. Then, using electronic sensors, mouse presence with commandswhich is sent to electrical bobbins evaluates.Later, themiddle section becomes electrically activated. Contacting the trap, the animal will die within 3 to 5 seconds contacting. Mouse corpse will transfer to the beneath section of trap. This section includes a drawer to be emptied daily or weekly. Preventing electric shocks, the power of all the sections will go with drawing out the drawer. Testing efficiency of the device, it was tried first with lab mice thus in each level of experiences the problems were solved.
Results:According to the design, each section of the device including attraction, killing and removing sections were evaluated separately. For instance, in killing section, the amount of voltage and its type also the method of electricity transfer to the animal was evaluated. In addition in attraction section the variety of fragrances were compared and it was found that walnut fragrance gave the best result for all the animal samples attraction. Also, the results showed 300 volts current voltage with 15 Amperes current intensity, has the best killing efficiency in less than a second than other voltages.
Conclusion:According to the different evaluations, it was clear there were no good results of killing in 2.5 to 15Amperes direct current intensity. Thus using direct currentmethods in these trap devices were not practical. In addition, using sexual fragrances for attraction males, in several species were tested and results showed that the proteins in these fragrances became decomposed very fast in environmental conditions and the attraction nature of these substances decreased. For this reason it seams according to its easy availability, food fragrances as attraction substances are more practical and useful.


Assessing Dez Dam reservoir water quality by application of WQI and TSI indices
Amir Hossein Javid, Seyed Ahmad Mirbagheri, Arezoo Karimian,
Volume 7, Issue 2 (10-2014)
Abstract

Background and Objectives: Dez dam located on Karun River is one of the largest Iranian dams. In a field study, EC, NO3, NH4, PO4, turbidity, TS, alkalinity, coli, temperature, chlorophyll a, DO, BOD5, and Secchi disk (at depths of 0, 2.5, 5, 10, 25, and 50 m)were measured at five sampling points during 2011-2012 water year. Materials and Methods: Water Quality Index and TSI were calculated for all sampling points and quality zonation was conducted in GIS. Results: It was found that the best water quality index for reservoir water is at second sampling point with amount of 61 situated at the center of reservoir, and the worst index is at entering point to the reservoir with amount of 46 in April. The main reason of changes was turnover of thermal stratification. Conclusion: The laboratory analysis and assessing the quality indices revealed that the Dez reservoir water is suitable for variety of public uses, however, it needs advanced treatment for drinking purpose. Moreover, in the case of continuity of pollutant entrance into the reservoir, the eutrophication risk would threaten the reservoir water quality. Eutrophication occurrence will cause serious limitations in water use applicability, increase turbidity, produce toxic materials, and increase sedimentation regime.


Application of rapid impact assessment matrix and sustainability model in environmental impact assessment and operational optimization of solid waste transfer stations in Tehran
A Daryabeigi Zand, A Vaezi Heir,
Volume 12, Issue 3 (12-2019)
Abstract
Background and Objective: Municipal waste transfer stations (WTS), operate as middle elements in waste collection and transfer to the final disposal site. Besides their benefits in waste transportation cost reduction, WTS can cause negative environmental impacts such as noise, air, and water pollution. Environmental impact assessment is an effective solution to reduce the environmental impacts of WTS. This research was conducted at evaluating the environmental impacts of various options defined for WTS in Tehran using the Rapid Impact AssessmentMatrix (RIAM) analysis method.
Materials and Methods: This descriptive-analytical study was performed to assess the environmental impacts of WTS based on field observation and data collection. Comparing was included four options including: continue the current condition of the WTS, three other alternatives considered to be three other alternatives (WTS in open space with the construction of green space) and transfer in enclosed space and with construction of green space and without it. Finally, using the sustainability model, the stability of the options was also measured.
Results: Based on the obtained results, the fourth option (indoor loading/unloading along with establishment of green spaces in WTS) as the first priority for the Construction of transfer stations among the other options has the highest score (0.079) in terms of sustainability as well as the adverse environmental impacts. However, the current environmental status of Tehran WTS (first option) has the lowest score (-0.213) in terms of sustainability and the most destructive environmental impacts and found to be the last priority in establishment of transfer stations.
Conclusion: Combined use of the RIAM and sustainability model can be a promising and reliable way to evaluate and improve the performance of (WTS).
 

Environmental impact assessment of Karaj compost plant using rapid impact assessment matrix and sustainability model
Parisa Mohammad Hosseini,
Volume 15, Issue 2 (8-2022)
Abstract
Background and Objective: Due to the negative effects of municipal waste, the need for proper management and selection of appropriate solutions to minimize these effects is strongly felt. One of the methods of recycling waste is preparing compost from organic materials. The purpose of this study is to evaluate the environmental impacts of the two options of implementation and non-implementation of the Karaj compost plant project.
Materials and Methods: Based on the obtained results, the project implementation was determined by gaining more points (0.181) in terms of sustainability and having the least destructive environmental effects, and the project was not implemented by gaining more points (-0.155) in terms of sustainability and having more environmentally destructive effects.
Results: Based on the obtained results, the first option (project implementation) was determined as the best option by gaining more points (0.181) in terms of sustainability and having the least destructive environmental Impacts and the second option (non-implementation of the project) was determined with a lower score (-0.155) in terms of sustainability and more environmental damage than the first option.
Conclusion: According to the research findings, the results of the rapid impact assessment matrix and sustainability model are consistent in confirming the superiority of compost plant performance over non-implementation.
 

Assessment of the potential environmental effects of newly deposited mine tailings from the Sungun Copper mine
Safieh Hassanzad, Hossein Pirkharrati, Masoumeh Ahangari, Farrokh Asadzadeh,
Volume 17, Issue 1 (6-2024)
Abstract
Background and Objective: One of the significant challenges in mining areas is the pollution of the environment by heavy metals. Therefore, it is crucial to assess the pollution risk associated with mining wastes and take action to mitigate their environmental impact. The current study assessed the risk potential of recently deposited tailings in the Songun copper mining area.
Materials and Methods: Based on the conditions of tailings, 26 samples were randomly selected from the recently deposited mine wastes. Twenty-two thin and thin polished sections were prepared for lithology and mineralogy studies. Inductively-Coupled Plasma Mass Spectrometry (ICP-MS) was employed to analyze all 26 samples, while X-ray diffraction method (XRD) was used to analyze a subset of 10 samples.
Results: Sulfide minerals, as the main source of environmental pollution, remain intact and unaffected in the tailings. However, the majority of potentially toxic elements (PTEs) exhibit higher concentrations in the waste composition than the standard levels, resulting in a total ecological risk index of 49.93. Geochemical indicators highlight significant pollution levels for elements such as lead (Pb), arsenic (As), and copper (Cu). The values of the non-carcinogenic risk index for children (except As and Fe) and adults are lower than 1, indicating a non-significant non-carcinogenic health risk. However, the carcinogenicity index also indicates a significant carcinogenic risk in the case of long exposure to wastes, particularly for children.
Conclusion: Therefore, wastes pose a significant environmental risk potential, and due to this risk, proper management of their storage is necessary to prevent the release of PTEs into the environment.

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