the acoustic presidencies was made by the efforts of the researchers of the islamic azad university of islamic azad universitych sciences unit . acoustics have been used as an acceptable economic and environmental solution for the construction of this award slowly in the fields of sound control in many environments, including the industries of home environments , urban construction, the construction of sound shelters, the insulation of tools and equipment in all cases of sound control. the use of natural fibers instead of artificial fibers. the researchers of the university of pennsylvania successfully transplanted some human brain cells into the brain of a mouse, which can react to the bottle like light . in this experiment, the lights grown in the laboratory, which was transplanted into the brain of a mouse, integrated with the host's brain within three months and created and identified with the host's nerves . also, the researchers used viruses that were labeled with fluorescent light, which were placed on the chest, from neuron to neuron. another neuron was going to track the physical connection between t