* Correspondence: [email protected] Department of Mathematics, Faculty of Science, Imam Khomeini International University, P.O. Box 34149-16818, Qazvin, Iran Full list of author information is available at the end of the article Abstract In this paper, an iterative sequence for relatively nonexpansive multi-valued mappings by using the notion of generalized projection is introduced, and th...

Abstract –The propagation path loss models may give different results if they are used in different environment other than in which they were designed. In this paper we compare the different path loss propagation models with measured field data. For comparative analysis we use the log distance path loss model, Stanford University Interim (SUI) Model, Hata model, Okumura’s Model, COST231 Extensi...

Background: Heavy metals are dangerous environmental pollutants that cause health hazards to humans, plants, and other living organisms by entering the food chain. Objectives: This research was carried out around Mohammadabad Qazvin landfill with aim of measuring concentration lead nickel in three plant species, including Artemisia sieberi, Salsola orientalis, Halimocnemis pilifera, as well soi...

The urban clusters in the Middle Reaches of the Yangtze River (MRYR) in China include the Chang-Zhu-Tan urban agglomeration, the Wuhan metropolitan area, and the Poyang Lake urban agglomeration. While previous studies of urban expansion in China focused mainly on the coastal regions, this study aimed to investigate urban expansion patterns and factors in the MRYR, which are crucial for urban de...

Although hepatitis B has been well studied, there are still aspects of its epidemiology that remain to be clarified. There are many regions with high seroprevalence, particularly in the developing regions of the world, and these regions are known to have different epidemiologic patterns. Nonetheless, there are currently no data on the differences in hepatitis B seroprevalence between urban and ...

Aggressive periodontitis, characterized by a rapid rate of periodontal disease progression in the absence of large quantity of bacterial plaque and or calculus present, affects otherwise healthy individuals less than 30 years old. The purpose of this study was to determine the prevalence of aggressive periodontitis among high school students in Qazvin, Iran. 780 students attending high school i...

Email: [email protected] Abstract Objective Sleep disorders are common in children; they also have a significant impact on the whole family, the parents in particular. Few studies in this field have been performed in Iran; hence the present study was carried out in order to determine sleep patterns and the prevalence of sleep disorders in school aged children in Qazvin. Material and M...

today, urban environment experts are endeavoring after new ways to increase the amount of urban green spaces and discover the best way to enter them as lively part of cities. greenways can supply the needs of urbanization to green spaces in addition they are effective in urban green transportation. this study is trying to offer an approach in process of urban greenways planning by ahp analytica...