sohrapur building, who is one of the original founders of the irradiation application research school uh to find out how we can take advantage of gamma race to gather more data about the age of an artifact and how we can preserve it for future generation, so that's what we're going to be covering in this episode of iran tech, with me your host aliza, stay tuned. let's start by talking about preservation. uh, preservation against what exactly? well, preservation against organic material, that is to say, microorganisms that exists within the the dirt. or even the air, these microorganisms, mainly consisting of a fungy and bacteria, can damage our artifact in many different ways, for example, let's say we have ancient painting and it consists of lot of different substances, so we have the piece of cloth that is the canvas and that can be torn as a result of disintegration of the particles within that piece of cloth because of the microorganisms, because they use the substances within, uh the uh the artifact as nutritional material to live and to cultivate themselves, it can also damage a