The Ghikhlar area is located at the NW Marand town, East Azarbaidjan. The wide range of Plio-Quaternary volcanic activites with volcanic and associated volcano-clastic rocks having compositions mainly as andesite to silica-undersaturated rocks (leucite basanite, leucite-tephrite and tephrite) have been covered mostly the rock units prior to the Cenozoic. The phenocrysts in andesites are amphibo...

Nitrification is one of the most active biological processes in the soils receiving ammonium nitrogen. The rate of this process is under the influence of several factors and their interactions. In this study, the effects of ammonium concentration and moisture content on the extent of nitrification in two soil samples named A (Loam) and B (Clay loam), which had been taken, respectively, from Mar...

  Iran is a wide and great land that is located on Alps earthquake belt of Himalaya. Great part of the urban and village residency of the country have been exposed to the intensive earthquake and destructive. Sarab city with several other cities, including Tehran, Karaj, Abyek, Qazvin, Roudbar, Khalkhal ,Tabriz, Marand and khoy are located on Earthquake belt that Earthquake risk is too hig...

Objectives: The perception of time is a fundamental and complicated cognitive skill, which allows us to perceive a series of events and activities and anticipate some events in the future. The passage of time is influenced by different contributions of the brain regions and basic cognitive processes, especially attention and memory. With regard to changes in the mentioned functio...

Introduction Agriculture sector is actually known as an economic sector, as it is said that economic growth would be impossible in the absence of agriculture growth. Nowadays, by using accurate scientific researches as an inspiration source and investigating environment potentials and capabilities of every area we can achieve comprehensive agricultural development and principles. In this way...