introduction there are significant differences in the spatial distribution of the iran annual precipitation. this is resulted from spatial behavior of precipitation in the one hand and variation in the sources of precipitation on the other. the lack of adequate distribution of meteorological stations and the unavailability of long-term statistics of precipitation makes the analysis of precipita...

background: esophageal cancer is often diagnosed in the last stages where the chance of patient’s survival is very low. the aim of this systematic review was presentation of valid estimation of survival in patients with esophageal cancer in different regions of iran. methods: a systematic review was carried out based on the reliable domestic medical databases including: sid, magiran, irandoc an...

introduction: attention to rural development than urban development in the third world not because of the majority of the population in rural areas, but also because it is the final solution to the problem of urban unemployment and decreasing the population density metropolis, development and improvement of the rural environment. rural tourism potentially can be considered as fundamental approa...

1. introduction climate is a large system which is produced due to the relation and action between other large systems. if a change occurs in one of these systems, other systems will coordinate themselves with the change fast or slowly. the consequences of this coordination will impress the system that is starter of this change and an endless continuum of the links connects these systems togeth...

background : esophageal cancer is the 7th most common cancer in iran. the northern part of the country shows the highest incidence for this malignancy. in this study we present some epidemiological and clinicopathological characteristics of patients with esophageal carcinoma in this region. methods : in a cross sectional study, 238 esophageal cancer patients were enrolled in a prospective study...

introduction: several potyviruses infecting gramineous plants have been reported from iran. mosaic is the most widespread viral disease affecting sugarcane and maize production. sugarcane mosaic virus (scmv) is one of the causal agents of mosaic disease, which was first described in ohio in 1963. scmv belonging to the genus potyvirus, family potyviridae, is a single-stranded positive sense rna ...