Abstract As the groundwater quantitative monitoring aimed to determine factors affecting aquifer behavior plays an important role in its regional management, studying temporal and spatial level variations requires a comprehensive network. Effort has been made this study introduce new linked simulation–optimization method, named MLPG-TLBO quantitatively monitor Birjand optimal points for piezome...

jujube (ziziphus jujuba mill.) is a native, economic iranian plant mainly cultivated in birjand. it is a deciduous shrub or tree with plain leaves with alternate placement pattern, androgynous flowers and hard fruits whose fruit and wood are used. mycorrhiza is the most prevalent symbiosis between the fungi and vascular plants which has various types. due to the beneficial effects of this symbi...

due to the limitation of production main resources such as water, allocation of this resources has a high importance. in order to prevent the loss of surface water and groundwater resources and also promoting economic prosperity farmers, applying policies that have been established based on the pattern of cultivation and protection of water resources, will be necessary. in such a situation the ...

introduction water is the most important parameter in the development of human societies. one of the pillars in the development of water resources is the investigation of environmental conditions and environmental compatibility of the project. identification of the areas vulnerable to pollution can play a major role in development strategies. in most areas of iran, located in the arid and semi-...

background: during recent years, overpopulation, increase of wastewater, and drop in water tables has led to high concentration of salts in underground water, which is an important environmental pollutant. if concentration of salt in drinking water exceeds the limits, it will be dangerous for health. the aim of this study was to measure physical and chemical parameters in drinking water of rura...

Mashhad Plain affects by a series of active faults in the northern margin of the Binalud and the southern margin of the Kopet-Dagh mountain ranges. The activity of these faults forms the morphology of the stepped bedrock of the Plain. In addition, the faults’ activities in the Quaternary period are the main effective parameters in thickness and texture of aquifer deposits in Mashhad Plain. In t...

Background Asthma and other allergic disorders are common health problems around the world especially in children and have a negative impact on quality of life. Allergic diseases are one of the leading causes of school absence as well as reduction in children performance at school. Epidemiologic Studies have shown that the prevalence of asthma and other allergic diseases have risen over the pas...

BACKGROUND The aim of the study was to investigate the relationship of self-esteem and depression with Internet addiction in university students. METHODS The present descriptive-analytic correlation study involved 408 students (150 female and 258 male) who had been selected by means of a cluster sampling method from among all the students studying in Birjand Islamic Azad University. Students ...