Hesarak Bala is a neighborhood located in the northwest of Karaj, Iran and in District 6 of Karaj Municipality. Geographical and urban location This neighborhood leads from the north to Sarbazan Gomnam Anonymous Boulevard, from the south to Shahid Beheshti Street (Qazvin Old Road), from the east to Qalam Street and from the west to Kharazmi Boulevard. Hesarak Bala is bounded on the west by Karaj (Pishhangi), on the east by Gohardasht neighborhood, on the north by Shahin Villa neighborhood, and on the south by Hesarak Pa'in neighborhood. Ecology Hesarak Bala is culturally almost single-culturally defined and has cultural facilities and educational centers. Various schools and university centers, especially the Teacher Training College, have added to the development of the region's culture and social character. The people of the upper Hesarak are of different ethnicities and have a long history. Although the population of this region is composed of different ethnic groups, based on the antiquity and civilization of the land, a single culture can be seen. It can be said that most of the people of Hesarak are from the north and, of course, other ethnic groups in Iran, such as Yazdi, Kermani, Isfahani, etc., can also be seen. It can be said that Hesarak Bala area is one of the most suitable areas for living. What is more, this region has a temperate climate and the housing and land conditions are more suitable than other areas of Karaj. Due to the famous Hesarak Bazaar, the food and leeks of this region are the most important factor in choosing this region. The upper Hesarak area has a genuine, compassionate, emotional and sociable people, so that they appear well in social communication. Considering the change and evolution of social behaviors and manners that can be seen in Karaj city, it can be said that the people of this region have intellectual stability and superfluous masculinity, and of course, the stability of their behavior and social performance is admirable in many fields. Director of the Sociology Department of the History Museum of Karaj Scientific Research Centers '' 'Vaccine Research Institute and Razi Serum Making 'is the oldest institute active in the field of vaccine production in Iran. This institute is located in Hesarak Bala area of Alborz province Alborz]] Iran is located, producing more than three and a half billion doses of various biological products annually. The institute is located on