the purpose of this research is investigation of relationship between vegetation cover and soil characteristics and determination of the most important soil factor that effects on quantity variations and kinds of vegetation cover in the study area. the study area is located in west of tehran province and south eastern of hashtgerd, next to najm-abad village. after field study, the index vegetat...

BACKGROUND Since Pars Abad district had been known as a focus of visceral leishmaniasis (VL) in Ardabil Province but the prevalence of the disease in nomadic tribes has not been determined, thus, this study was conducted. METHODS This descriptive cross-sectional study was conducted on children up to 12yr old of nomadic tribes from Pars Abad County, Ardabil Province, Iran in 2015. For each ind...

Sir, Acute type B aortic dissection (ABAD) is a life-threatening vascular emergency with an incidence estimated at 5-30 per 1 million people per year.[1] Available evidence support endovascular and surgical treatment for ABAD complicated by shock or organ damage. In uncomplicated ABAD, benefits of endovascular treatment are not well established and the preferred management mandates close clinic...

Alzheimer's disease (AD) is a conformational disease that is characterized by amyloid-β (Aβ) deposition in the brain. Aβ exerts its toxicity in part by receptor-mediated interactions that cause down-stream protein misfolding and aggregation, as well as mitochondrial dysfunction. Recent reports indicate that Aβ may also interact directly with intracellular proteins such as the mitochondrial enzy...

pollution of agricultural lands is a widespread problem in mine regions. the transport of the pollutants through the food chain, causes their accumulation s in tissues of plants and animals which endangers their health. this study aimed to measure the concentrations of heavy metals (lead, copper, zinc and manganese) in wheat roots of darreh zaresh villages which might be used for future environ...

formation and expantion of informal settlements are concequences of urban growth and zanjan isn't an exception to this regulation. najaf abad informal settlement has been formed and expanded on the bases of uncontrolled and exceeding rural immigration. this study aims to investigate role of social security in empowerment as well as elimination district problems of zanjan najaf abad. in the empo...