Background and Objective: This study was performed to investigate the spatial and temporal changes of the zooplankton population in the Bukan reservoir and to map these variations for agricultural and fisheries exploitation.
Method: The samples were taken monthly from More
Background and Objective: This study was performed to investigate the spatial and temporal changes of the zooplankton population in the Bukan reservoir and to map these variations for agricultural and fisheries exploitation.
Method: The samples were taken monthly from eight sampling sites during 2015. The samples were filtered through a 55-micron mesh size filter, fixed by 4% formalin and enumerated by an inverted microscope. Geo-statistics interpolation method in GIS (GS+ software) was used to reveal spatial changes of zooplankton and to estimate it in non-sampled points. The cross validation method was used to evaluate and compare the geostatistical methods.
Findings: Spherical model fitness on the empirical semi-variogram of zooplankton density in the winter provided the results that indicated the radius of semi- variogram effect is 7280 m. The correlation coefficient of the fitted model was 0.995. The Kriging method with error of -53.42 was selected as a suitable model for spatial assessment of zooplankton density.
Discussion and Conclusion: Most of the zooplankton population is in the summer and the lowest was seen in the spring. The maximum number of zooplanktons at the beginning of the Bukan dam which regularly reduced towards end of the dam.
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Background and Objective: Population growth, industrial development and increase in quality and quantity of consumer products has led to the increase of waste generated. According to Department of Municipal Utilities of Bukan an average of 189 tons of waste is generated More
Background and Objective: Population growth, industrial development and increase in quality and quantity of consumer products has led to the increase of waste generated. According to Department of Municipal Utilities of Bukan an average of 189 tons of waste is generated daily, that means per capita waste generation is about 640 to 820 grams per day, which is slightly higher than the country average (the equivalent of 600 to 800 grams per day).Therefore the selection of a municipal waste landfill is one of the most important steps and goals in management of municipal solid waste of Bukan.
Method: This study is analytical-descriptive, therefore by full recognition of locating criteria such as communicational lines, distance between rural and urban areas, surface waters privacy, distance from fault, land usage, slope and the direction of slope which play critical rule in selecting the waste landfill site and utilizing Boolean Logic and weighting of layers using AHP model in GIS software, the best location for landfill waste is selected based on mentioned criteria.
Findings: Results obtained from the poll of experts in the AHP model has showed that Hydrology criterion with a weight of 0/235 as the most important and land use with a weigh of 0/023 as the least important one have been known. Also after extracting the information layers of criteria from the maps and prioritizing locating ranges in 5 classes, it has been found that there are notable zones to landfill waste in the city of Bokan which ultimately a zone with the area of 138 Hectares is chosen. The selected are is located between Bokan and Simineh and to the south of Kani Shaqaq village.
Discussion and Conclusion: Generally, considering the results of the presented research, it can be said that prioritised ranges for positioning can be determined by combining the Boolean logic method and AHP model, acceptably.
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In this study, the value system governing female high school students and their mothers in Buchan County has been assessed and compared. The main research method was survey and the data collection tool was a questionnaire. Two samples of 180 students and 180 of their mo More
In this study, the value system governing female high school students and their mothers in Buchan County has been assessed and compared. The main research method was survey and the data collection tool was a questionnaire. Two samples of 180 students and 180 of their mothers were selected by multi-stage systematic random sampling. The face validity of the questionnaire was confirmed by experts and its reliability was confirmed by Cronbach's alpha coefficient. The results show that there is no difference between the two groups of female students and their mothers in material and extra-material values, values related to education and science and family. However, there is a significant difference between the two groups in the values of collectivism, individualism, religion and tradition. That is, the tendency towards individualism and escape from religious and traditional values is stronger among schoolgirls. While there is interaction and sharing between female students and their mothers in the area of modern values, the results in the area of traditional values show a rift.
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