List of Articles
-
Open Access Article
1 - A rview of the types of superabsorbents used in agriculture and the study of the synthesis of two types of adsorbents using recycled sources to save water resources
Seyedeh Bahareh AimiWater is one of the problems of today's world and it is necessary to conserve it. Many parts of the world are facing drought conditions. The purpose of this research is to analyze new and different techniques in modern agriculture. In this regard, it has been tried to MoreWater is one of the problems of today's world and it is necessary to conserve it. Many parts of the world are facing drought conditions. The purpose of this research is to analyze new and different techniques in modern agriculture. In this regard, it has been tried to introduce new methods using super absorbents. With the advancement of science and technology, excellent polymer materials have been developed to retain water. In this article, water retention agents based on natural and synthetic polymers have been reviewed in the last 10 years. Finally, the synthesis of two types of natural and synthetic super absorbents using recycled materials is described. Hydroxyethyl cellulose has excellent characteristics of a superabsorbent such as being biodegradable, non-toxic, high water absorption, and is one of the derivatives of cellulose, which is used in water extraction, wastewater treatment, electrolytic membranes, pharmaceuticals, and pesticides. Alternative soil has many applications in agriculture. And its use can be expanded by combining with different polymers. This combination allows the formation of new biomaterials with improved properties and various applications. As a result of preparing a water retention agent with a practical perspective in agriculture, it not only enhances water absorption and water retention in the soil, but also is resistant to salinity and has mechanical strength, re usability and economic value. is. All these features are present in the introduced super absorbents. Manuscript profile -
Open Access Article
2 - Spirulina, wastewater dye absorbent microalgae
Hanieh Mirbolooki fatemeh ghanbari Hooman HeraviDye is the first known pollutant in industrial wastewater, and its small amount is very undesirable in water. Most of the dyes contain complex organic molecules and are harmful to aquatic life and humans due to the presence of metals, aromatics and other compounds in th MoreDye is the first known pollutant in industrial wastewater, and its small amount is very undesirable in water. Most of the dyes contain complex organic molecules and are harmful to aquatic life and humans due to the presence of metals, aromatics and other compounds in their structure. Removing or reducing the amount of this pollutant entering the environment is essential, and biological absorption is one of these methods. The main purpose of this research is to investigate the removal of blue reactive textile dye by spirulina microalgae. In the process of conducting the research, the effect of variables such as contact time, injected algae dose and wastewater concentration was investigated on the dye removal process and the amount of absorption of the samples was measured by a spectrophotometer and the number of experiments was determined by the design expert software via response surface method (RSM) and the analysis of variance (ANOVA) statistical tool was used to analyze the obtained results. Based on the obtained results, in the optimal conditions of the experiment, the best percentage of dye removal by spirulina microalgae was 100% in contact time of 30 minutes with a dose of 10 ml of injected algae into wastewater with a color concentration of 50 mg/L. Therefore, the use of microalgae, in addition to being an inexpensive and easy-to-operate method for color removal from colored wastewater such as textile wastewater, it will be of interest to researchers as an environmentally friendly method to remove hard degradable pollutants. Manuscript profile -
Open Access Article
3 - Study of Urban Development and Vegetation Changes in Mazandaran by Change Vector Analysis
niloufar islamzadehMazandaran province has always been considered by tourists due to its high tourism potential. Therefore, in order to satisfy the people and tourists, urban development has been expanded. On the other hand, it has a high rate of vegetation degradation. Monitoring of land MoreMazandaran province has always been considered by tourists due to its high tourism potential. Therefore, in order to satisfy the people and tourists, urban development has been expanded. On the other hand, it has a high rate of vegetation degradation. Monitoring of land use and land cover changes play an important role in landscape and urban planning and management. In this study, urban development and vegetation changes of Mazandaran province every cities were studied using Landsat satellite images over a period of 30 years by Change Vector Analysis method. The results showed that the rate of urban development and vegetation degradation change in the study period is increasing in the province. The high rate of urban development changes in terms of percentage of area is related to the cities of Babolsar, Nowshahr and Chalous ,includes 21, 15 and 11% of their total area, respectively. These three cities have the highest number of tourists per year and the highest number of villas. The high rate of destruction of deforestation in terms of area related to Sari, Neka and Behshahr, in the east of the province, includes 27, 11 and 7 hectares, respectively. Manuscript profile -
Open Access Article
4 - Investigation pesticide residues of Mevinphos and Ethion in apple and grape and health risk assessment based on Monte Carlo Simulation
Behzad Mohammadi Khangahi Neda Sohili Maleki Lila Abbaszadeh Gholamhossein SafariApples and grapes are useful fruits that are widely consumed by humans. These fruits have many pests and diseases, which are controlled by different types of pesticides. Therefore, pesticides enter the human food chain through the consumption of fruits and vegetables an MoreApples and grapes are useful fruits that are widely consumed by humans. These fruits have many pests and diseases, which are controlled by different types of pesticides. Therefore, pesticides enter the human food chain through the consumption of fruits and vegetables and cause health problems. Therefore, monitoring pesticide residues in fruits and vegetable is necessary. In this study, mevinphos and ethion pesticide residues in 24 apple and grape samples collected from Maragheh County of eastern Azerbaijan province were analyzed based on a quick, easy, cheap, effective, rugged, and safe method combined with Gas Chromatography and mass spectrometry. Moreover, the probabilistic health risk assessment includes non-carcinogenic risk were estimated by hazard quotient using the Monte Carlo Simulation method. The results indicated mevinphos and ethion pesticide residues were detected in 100.00% of the analyzed samples. The ethion residue average in apple and grape samples were 0.08 and 0.09 mg/kg, respectively, which was lower than maximum residue levels (MRL) of Iran. The mevinphos residue average in apple and grape samples were 0.12 and 0.13 mg/kg, respectively, which was above than Iranian MRL. Also, the residues of Ethion and Moinfos in 100% of the apple and grape samples were higher than the MRL of the European Union. Monte Carlo Analysis results indicated that HQ amount with 100 % certainty in children’s and adults were less than 1. Therefore, the consumption of apples and grapes does not pose any significant risk to the health of consumers. Manuscript profile -
Open Access Article
5 - The current research was conducted with the aim of analyzing the content of fifth grade books based on the level of attention to environmental components. Descriptive research method that has been done quantitatively from the qualitative content analysis method. The statistical population is the books of the fifth grade of the elementary school in the academic year 1402-1403..In these books, text, questions and pictures have been analyzed. In this study, 9 environmental components including water, air, climate, soil, sound, plants, animals, waste and pollution were investigated. According to the research findings, among the environmental components, 779 times Attention has been paid to water, 145 times to air, 52 times to climate, 355 times to soil, 54 times to sound, 991 times to plants, 351 times to animals, 34 times to pollution and 8 times to waste. The plant component with a frequency of 991 is in the first rank and the waste component is in the last rank with a frequency of 8. The results show that paying special attention to a number and ignoring other components causes disturbances in creating students' environmental knowledge and behavior.Also, the positive and negative effects of humans on the environment are not mentioned in these books. As citizens of the society and future makers, students should be aware of the result of their behavior and that of others with the environment so that they can take steps in the direction of reducing the undesirable behavior and increasing the favorable behavior of environmental restoration.
Pari Mosapour Miyandehi Mahboubeh MansouriThe current research was conducted with the aim of analyzing the content of fifth grade books based on the level of attention to environmental components. Descriptive research method that has been done quantitatively from the qualitative content analysis method. The sta MoreThe current research was conducted with the aim of analyzing the content of fifth grade books based on the level of attention to environmental components. Descriptive research method that has been done quantitatively from the qualitative content analysis method. The statistical population is the books of the fifth grade of the elementary school in the academic year 1402-1403..In these books, text, questions and pictures have been analyzed. In this study, 9 environmental components including water, air, climate, soil, sound, plants, animals, waste and pollution were investigated. According to the research findings, among the environmental components, 779 times Attention has been paid to water, 145 times to air, 52 times to climate, 355 times to soil, 54 times to sound, 991 times to plants, 351 times to animals, 34 times to pollution and 8 times to waste. The plant component with a frequency of 991 is in the first rank and the waste component is in the last rank with a frequency of 8. The results show that paying special attention to a number and ignoring other components causes disturbances in creating students' environmental knowledge and behavior.Also, the positive and negative effects of humans on the environment are not mentioned in these books. As citizens of the society and future makers, students should be aware of the result of their behavior and that of others with the environment so that they can take steps in the direction of reducing the undesirable behavior and increasing the favorable behavior of environmental restoration. Manuscript profile