-
Open Access Article
1 - Modeling Water Quality of Rivers Using QUAL2Kw Model (Case Study: Shahroud River)
Rozita Areeyaenezhad Mahdi Sarai Tabrizi Hossein BabazadehAbstract Background and Objective: Modeling water quality of rivers can be used as one of the most effective tools for water quality management in rivers and reducing the environmental impacts of entering pollutants. The purpose of this paper is to use the valid QUAL2K MoreAbstract Background and Objective: Modeling water quality of rivers can be used as one of the most effective tools for water quality management in rivers and reducing the environmental impacts of entering pollutants. The purpose of this paper is to use the valid QUAL2Kw 5.1 model to model water quality in Shahrood River. Method: In this paper, seven parameters of water quality have been used including dissolved oxygen (DO), biochemical demand oxygen (BOD), pH, total dissolved solids (TDS), total phosphorus, and total nitrogen four times in Shahrood River. Data from October of 2007 and July of 2008 were used to calibrate and data from September and October of 2008 were used to verify the model. Auto-calibration of model coefficients was done using genetic algorithm of the model. In order to compare simulated results with the observed data, determination coefficient and mean absolute error were used. Findings: The most important calibration coefficients of the model were related to TSS, BOD, total nitrogen and phosphorus. This model in simulation of pH and EC with mean absolute error of 0.19 and 163.89 during verification stage showed the most and the least accuracy, respectively. On average the minimum and maximum DO were measured 6.93 and 9.99 mg/L in September and October of 2008 respectively in Shahroud River. Also the highest and lowest accuracy of the model in simulating these parameters were related to July and October of 2008 with mean absolute error of 0.86 and 1.29, respectively. In addition the results showed accurate hydraulic modeling of hydraulic parameters changes of the river along the river had a great influence on modeling of the water river quality. Discussion and Conclusion: The results of this paper show the accuracy of the QUAL2Kw model in simulating water quality parameters of Shahrood River. On the other hand, the accuracy of the simulation of each parameter varies with the amount of its variation along the river so that the less the changes in a parameter along the river and at different intervals, the higher the accuracy of the model in simulating this parameter will be. Manuscript profile -
Open Access Article
2 - Recognition of physical-spatial structure types in rural housing architecture Shahroud valley, Khalkhal County
HASSAN AKBARI mahdi babazadeh Hojatollah Rashid kalvirBackground and Objective: Despite the historical background of the Khalkhal county, there are still insufficient studies to identify the native architecture, especially the rural architecture of this region. Because of a tourism path construction, between Khalkhal count MoreBackground and Objective: Despite the historical background of the Khalkhal county, there are still insufficient studies to identify the native architecture, especially the rural architecture of this region. Because of a tourism path construction, between Khalkhal county and Masouleh city, through the Shahrood tourist valley, this study seeks to identify the physical – spatial characteristics of the native housing of villages located along this valley, in order to preserve and apply it in future developments. Method: The research method is qualitative one and data analysis is done by descriptive-analytical method. After field studies in Shahrood valley villages, the study species have been selected in terms of the dominant features of the native architecture from the “Shal, Kolur, Derow, Asbu and Askastan” villages and analyzed. Physical-spatial characteristics, such as plan form, architectural elements, materials and methods of construction, roof form, openings ratio, the ratio of mass to space, and functional relationships, have been surveyed and analyzed. Findings: Dense rural fabric, extroverted and compact architectural form, small openings, porch and columnar Telaar, wooden torrehs, sloping roofs, regarding terrain slope and using local materials are the characteristics of the rural housing architecture in this region. Also in most species, the service space is located on the ground floor and the living space is on the first floor. Discussion and Conclusions: The results show that all studied species are extroverted, and have porch, Telaar and wooden torreh as the fixed and dominant elements. The species can be classified in two types: The houses with porch, having closet space and houses with porch, but without closet space. In general, rural housing pattern of this region, is affected by the cold climate of Khalkhal region in “plan form, structure and materials, openings and the ratio of mass to space and functional relationships”. Manuscript profile -
Open Access Article
3 - Environmental impact assessment and sustainability level determination in cement plants (Case study: Shahrood cement plant)
Farhang Sereshki Amir SaffariFocusing on environmental impact assessment as a new tool to determine the harmful effects of projects on the environment is very necessary. The establishment of cement plants in Iran is accompanied by huge investments that aim to create jobs and have others economic as MoreFocusing on environmental impact assessment as a new tool to determine the harmful effects of projects on the environment is very necessary. The establishment of cement plants in Iran is accompanied by huge investments that aim to create jobs and have others economic aspects; this trend is on the rise. However, cement plants contribute to environmental pollutions. Therefore, understanding the effect of activities in these potentially polluting centres will greatly help determine future strategies. For the control and prevention of pollution, it is necessary to use a model for the quantitative assessment of environmental impacts. In this study, the Folchi method has been using to recognize and identify environmental pollution by cement plants and effective solutions to decrease the negative impacts of environmental pollution by Shahrood cement plant. According to the results, the contamination generated by the plant, especially for environmental components such as air quality, area landscape, soil of the area, ecology, and area usage are more significant than other environmental components. The EIA results are then obtained and used to assess the sustainability of the complex using Phillips mathematical model. The obtained results indicate that this complex is unsustainable; therefore, preventive environmental activities must be recommended with a preference to reduce environmental damages through its components. Manuscript profile -
Open Access Article
4 - Taxonomic study of the soil laelapid mites (Acari: Mesostigmata) in different habitats of Shahrood region-Iran
Parisa Ghorani Masoud Hakimitabar Omid Joharchi Hamed GhobariLaelapidae is a large and cosmopolitan family comprises a multitude of morphologically and behaviorally diverse mites that are free-living predators that inhabit soil-litter habitats or associated with arthropods, mammals, or birds. This study is based on survey on soil MoreLaelapidae is a large and cosmopolitan family comprises a multitude of morphologically and behaviorally diverse mites that are free-living predators that inhabit soil-litter habitats or associated with arthropods, mammals, or birds. This study is based on survey on soil inhabiting Laelapidae that was carried in 2015 from different habitats of Shahrood region. Soils and litter were collected then transferred to laboratory and put in Berlese-Tullgren funnel. Mites were extracted using it. Specimens were preserved in 75% ethanol and cleared in Lactic acid. Mites were then directly mounted into Faure medium on microscopic slides. Figures were capture and measurements were calculated using a CH2 Olympus microscope. In this study, 19 species belonging 10 genera and three subfamilies were collected and identified, all species considered as new records for the mite’s fauna of Semnan Province. Identified species are as follows: Subfamily Hypoaspidinae: Cosmolaelaps rectangularis (Sheals, 1926); Cosmolaelaps vacua (Michael, 1891); Cosmolaelaps lutegiensis (Shcherbak, 1971); Gaeolaelaps aculieifer (Canestrini, 1884); Gaeolaelaps angusta (Karg, 1965); Gaeolaelaps kargi (Costa, 1968); Gaeolaelaps nolli (Karg, 1962); Gaeolaelaps queenslandicus (Womersley, 1956); Euandrolaelaps karaawaiewi (Berlese 1903); Euandrolaelaps sardoa (Berles, 1911); Pseudoparasitus dentatus (Halbert, 1920); Pseudoparasitus hajiganbari Kazemi, 2014; Ololaelaps gamagarensis (Jordaan & Loots, 1987); Subfamily Melittiphidinae: Laelaspis pennatus (Joharchi & Halliday, 2012); Laelaspis dariusi Joharchi & Jalaeian, 2012; Laelaspisella berlesi; Joharchi, 2016 Gymnolaelaps myrmophilus (Michael, 1891);. Subfamily Laelapinae: Haemolaelaps shealsi (Costa, 1968); Haemolaelaps casalis (Berlese, 1887). Manuscript profile -
Open Access Article
5 - Qualitative study of apricot varieties of Prunus armeniaca cv Shahroudi during different harvesting stages
jasim taha Jafar Hajilou Qolamreza dehghanToday, much attention is paid to the quality of fruits, including those of nuclear origin, with regard to their after-harvest life. The purpose of this research was to evaluate some of the qualitative traits during the final stages of growth and determine the time of ha MoreToday, much attention is paid to the quality of fruits, including those of nuclear origin, with regard to their after-harvest life. The purpose of this research was to evaluate some of the qualitative traits during the final stages of growth and determine the time of harvesting apricot of Shahroodi cultivar according to the time and market of consumption. Apricot fruits were harvested in 3 different time intervals (distance between each harvest and another three days). Experiment was conducted on randomized complete block design in three treatments (different stages of harvesting) and four replications (main tree species). The measured qualitative traits included total soluble solids (TSS), titratable acidity (TA), vitamin C, fruit firmness, pH of fruit extract, phenol, flavonoid, total antioxidant capacity, anthocyanin, antioxidant enzymes (peroxidase, catalase, superoxide dismutase) , Polyphenol oxidase) and total protein. All traits were significant at 5% level and changed during harvesting. Antioxidant enzymes increased during harvesting, except polyphenol oxidase, phenols and flavonoids decreased. According to the results, it seems that the best harvest time for this apricot is the second harvest. Manuscript profile -
Open Access Article
6 - Phytochemical and antioxidant activity of Elaeagnus angustifolia L. fruits in different regions of Shahrood
esmaeil Babakhanzadeh Sajirani Seyyed Javad Mousavizadeh Khadegheh MozafariElaeagnus angustifolia L. is one of the most important medicinal fruits which had a lot of secondary metabolites such as phenols and flavonoid and has been used in traditional medicine. The presences of flavonoids, phenols and antioxidant properties have been reported i MoreElaeagnus angustifolia L. is one of the most important medicinal fruits which had a lot of secondary metabolites such as phenols and flavonoid and has been used in traditional medicine. The presences of flavonoids, phenols and antioxidant properties have been reported in fruits of Elaeagnus angustifolia L. In this research the ripe fruits of plant were collected from different regions of Shahrood (1000-1400m). The methanol extracts were obtained by maceration, total phenol and flavonoids contents were measured by spectrophotometery and antioxidant activities were analyzed by DPPH method. The results were showed that in higher region (1400m) the fruit extract of plant had the greatest amount of total phenol, flavonoids and antioxidant activity. So we observed that there is the correlation between altitude ot the region with quality and quantities of medicinal metabolites and antioxidant properties. Manuscript profile -
Open Access Article
7 - Silurian undersea basalts in VMS mineralization in the North-East of Shahrood
Abodelreza Jafarian -
Open Access Article
8 - Assessing the risk of environmental pollution caused by tourism activities (recreation - sports) in natural environments of Shahrood County
Sepideh Hosseini Dinani SEYED MOSTAFA TAYEBI SANI Bagher Morsal Ali fahiminejad
Sanad
Sanad is a platform for managing Azad University publications
Links
Related Centers
Technical Support
Official pages
The rights to this website are owned by the Raimag Press Management System.
Copyright © 2021-2024