Background: The genus Nepeta comprise various annual and perennial plants with 250 species in different parts of the world. 67 species of Nepeta have been reported in Iran in which 39 ones are endemic to Iran. Nepeta eremokosmos Rech.f. is an endemic plant growing in the Semnan of Iran. Objective: The present study was conducted to assess the quantitative and qualitative properties of Nepeta er...

The bentonites of Aftar region, with average of 15 meters thickness and about 10 km long, are volcanoclastic sequence of Semnan Formation that formed in a shallow sea water environment. Based on the field, XRD data, microscopic and scanning electron microscopic (SEM) studies, as well as chemistry, the bentonite beds contain zeolites (clinoptilolite and mordenite), gypsum, calcite, celestine, op...

In the present study, the phase transition of clinoptilolite, 16(Na, K)6[Al6Si30O72]. 20H2O, to barium zeolites, has been investigated in the alkaline hydrothermal conditions, at the presence of the barium bearing solutions, and the high temperature. Firstly, the primary sample collected from Aftar area, west of Semnan. Secondly, powdered and examined without purification. Clinoptilolite, as a ...

Astragalus fridae of family Fabaceae has farmaceutical properties, Food and dustarial value.This plant is native to the province Semnan. Aftar village located in the North West of Semnan. Its main habitat is Aftr village located northwest of Semnan. This plant is endangered of extinction. The purposes of this project included: The study of anatomical structures of aerial organs, soluble Carbohy...